./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem13_label44.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_24984fb3-2018-4dd8-a81c-a69afb913d34/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24984fb3-2018-4dd8-a81c-a69afb913d34/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_24984fb3-2018-4dd8-a81c-a69afb913d34/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24984fb3-2018-4dd8-a81c-a69afb913d34/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem13_label44.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24984fb3-2018-4dd8-a81c-a69afb913d34/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_24984fb3-2018-4dd8-a81c-a69afb913d34/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 4b7f120460c5e90aafe001aa1b39212c5555914a66c1599385ca623bf4c03471 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 05:38:29,856 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 05:38:29,918 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24984fb3-2018-4dd8-a81c-a69afb913d34/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 05:38:29,923 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 05:38:29,924 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 05:38:29,949 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 05:38:29,949 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 05:38:29,950 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 05:38:29,950 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 05:38:29,951 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 05:38:29,951 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 05:38:29,952 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 05:38:29,953 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 05:38:29,953 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 05:38:29,954 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 05:38:29,954 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 05:38:29,955 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 05:38:29,955 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 05:38:29,956 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 05:38:29,956 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 05:38:29,956 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 05:38:29,957 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 05:38:29,958 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 05:38:29,958 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 05:38:29,958 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 05:38:29,959 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 05:38:29,959 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 05:38:29,960 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 05:38:29,960 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 05:38:29,960 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 05:38:29,961 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 05:38:29,961 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 05:38:29,962 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 05:38:29,962 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 05:38:29,963 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 05:38:29,963 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 05:38:29,963 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 05:38:29,964 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 05:38:29,964 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 05:38:29,964 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 05:38:29,964 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 05:38:29,964 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 05:38:29,965 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_24984fb3-2018-4dd8-a81c-a69afb913d34/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24984fb3-2018-4dd8-a81c-a69afb913d34/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4b7f120460c5e90aafe001aa1b39212c5555914a66c1599385ca623bf4c03471 [2023-11-29 05:38:30,178 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 05:38:30,199 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 05:38:30,202 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 05:38:30,203 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 05:38:30,204 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 05:38:30,205 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24984fb3-2018-4dd8-a81c-a69afb913d34/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/eca-rers2012/Problem13_label44.c [2023-11-29 05:38:32,992 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 05:38:33,423 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 05:38:33,424 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24984fb3-2018-4dd8-a81c-a69afb913d34/sv-benchmarks/c/eca-rers2012/Problem13_label44.c [2023-11-29 05:38:33,457 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24984fb3-2018-4dd8-a81c-a69afb913d34/bin/uautomizer-verify-BQ2R08f2Ya/data/8d988bd94/cdc8e4b8e5854716ae5f55d29fda7cf7/FLAG50bdf12c1 [2023-11-29 05:38:33,472 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24984fb3-2018-4dd8-a81c-a69afb913d34/bin/uautomizer-verify-BQ2R08f2Ya/data/8d988bd94/cdc8e4b8e5854716ae5f55d29fda7cf7 [2023-11-29 05:38:33,474 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 05:38:33,476 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 05:38:33,477 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 05:38:33,477 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 05:38:33,482 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 05:38:33,483 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 05:38:33" (1/1) ... [2023-11-29 05:38:33,484 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75efdf4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:38:33, skipping insertion in model container [2023-11-29 05:38:33,484 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 05:38:33" (1/1) ... [2023-11-29 05:38:33,647 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 05:38:33,878 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_24984fb3-2018-4dd8-a81c-a69afb913d34/sv-benchmarks/c/eca-rers2012/Problem13_label44.c[4499,4512] [2023-11-29 05:38:34,858 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 05:38:34,869 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 05:38:34,889 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_24984fb3-2018-4dd8-a81c-a69afb913d34/sv-benchmarks/c/eca-rers2012/Problem13_label44.c[4499,4512] [2023-11-29 05:38:35,532 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 05:38:35,560 INFO L206 MainTranslator]: Completed translation [2023-11-29 05:38:35,561 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:38:35 WrapperNode [2023-11-29 05:38:35,561 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 05:38:35,562 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 05:38:35,562 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 05:38:35,562 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 05:38:35,569 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:38:35" (1/1) ... [2023-11-29 05:38:35,641 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:38:35" (1/1) ... [2023-11-29 05:38:36,041 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 5584 [2023-11-29 05:38:36,042 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 05:38:36,043 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 05:38:36,043 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 05:38:36,043 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 05:38:36,054 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:38:35" (1/1) ... [2023-11-29 05:38:36,055 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:38:35" (1/1) ... [2023-11-29 05:38:36,138 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:38:35" (1/1) ... [2023-11-29 05:38:36,383 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-11-29 05:38:36,383 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:38:35" (1/1) ... [2023-11-29 05:38:36,383 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:38:35" (1/1) ... [2023-11-29 05:38:36,594 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:38:35" (1/1) ... [2023-11-29 05:38:36,621 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:38:35" (1/1) ... [2023-11-29 05:38:36,653 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:38:35" (1/1) ... [2023-11-29 05:38:36,669 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:38:35" (1/1) ... [2023-11-29 05:38:36,742 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 05:38:36,743 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 05:38:36,743 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 05:38:36,743 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 05:38:36,744 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:38:35" (1/1) ... [2023-11-29 05:38:36,749 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 05:38:36,760 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24984fb3-2018-4dd8-a81c-a69afb913d34/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:38:36,773 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24984fb3-2018-4dd8-a81c-a69afb913d34/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 05:38:36,775 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24984fb3-2018-4dd8-a81c-a69afb913d34/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 05:38:36,805 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 05:38:36,805 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 05:38:36,805 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 05:38:36,806 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 05:38:36,871 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 05:38:36,873 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 05:38:42,471 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 05:38:42,530 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 05:38:42,530 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-29 05:38:42,531 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 05:38:42 BoogieIcfgContainer [2023-11-29 05:38:42,532 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 05:38:42,534 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 05:38:42,534 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 05:38:42,537 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 05:38:42,537 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 05:38:33" (1/3) ... [2023-11-29 05:38:42,537 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24b6fba7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 05:38:42, skipping insertion in model container [2023-11-29 05:38:42,538 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:38:35" (2/3) ... [2023-11-29 05:38:42,538 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24b6fba7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 05:38:42, skipping insertion in model container [2023-11-29 05:38:42,538 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 05:38:42" (3/3) ... [2023-11-29 05:38:42,539 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label44.c [2023-11-29 05:38:42,554 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 05:38:42,554 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 05:38:42,620 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 05:38:42,626 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;@69e4c9bc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 05:38:42,627 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-29 05:38:42,635 INFO L276 IsEmpty]: Start isEmpty. Operand has 1036 states, 1034 states have (on average 1.877176015473888) internal successors, (1941), 1035 states have internal predecessors, (1941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:38:42,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-11-29 05:38:42,641 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:38:42,641 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] [2023-11-29 05:38:42,642 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:38:42,646 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:38:42,647 INFO L85 PathProgramCache]: Analyzing trace with hash -228085034, now seen corresponding path program 1 times [2023-11-29 05:38:42,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:38:42,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706858038] [2023-11-29 05:38:42,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:38:42,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:38:42,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:38:42,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:38:42,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:38:42,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706858038] [2023-11-29 05:38:42,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706858038] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:38:42,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:38:42,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 05:38:42,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104517481] [2023-11-29 05:38:42,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:38:42,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-29 05:38:42,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:38:42,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-29 05:38:42,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 05:38:42,853 INFO L87 Difference]: Start difference. First operand has 1036 states, 1034 states have (on average 1.877176015473888) internal successors, (1941), 1035 states have internal predecessors, (1941), 0 states have call successors, (0), 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 14.5) internal successors, (29), 2 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:38:42,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:38:42,933 INFO L93 Difference]: Finished difference Result 2071 states and 3881 transitions. [2023-11-29 05:38:42,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 05:38:42,935 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2023-11-29 05:38:42,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:38:42,956 INFO L225 Difference]: With dead ends: 2071 [2023-11-29 05:38:42,956 INFO L226 Difference]: Without dead ends: 1034 [2023-11-29 05:38:42,962 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 05:38:42,966 INFO L413 NwaCegarLoop]: 1876 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1876 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:38:42,967 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1876 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:38:42,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1034 states. [2023-11-29 05:38:43,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1034 to 1034. [2023-11-29 05:38:43,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1034 states, 1033 states have (on average 1.8160696999031947) internal successors, (1876), 1033 states have internal predecessors, (1876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:38:43,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1034 states to 1034 states and 1876 transitions. [2023-11-29 05:38:43,053 INFO L78 Accepts]: Start accepts. Automaton has 1034 states and 1876 transitions. Word has length 29 [2023-11-29 05:38:43,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:38:43,054 INFO L495 AbstractCegarLoop]: Abstraction has 1034 states and 1876 transitions. [2023-11-29 05:38:43,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:38:43,054 INFO L276 IsEmpty]: Start isEmpty. Operand 1034 states and 1876 transitions. [2023-11-29 05:38:43,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-11-29 05:38:43,055 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:38:43,055 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] [2023-11-29 05:38:43,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 05:38:43,056 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:38:43,056 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:38:43,056 INFO L85 PathProgramCache]: Analyzing trace with hash -1216758797, now seen corresponding path program 1 times [2023-11-29 05:38:43,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:38:43,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31541830] [2023-11-29 05:38:43,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:38:43,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:38:43,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:38:43,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:38:43,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:38:43,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31541830] [2023-11-29 05:38:43,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31541830] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:38:43,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:38:43,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:38:43,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693259395] [2023-11-29 05:38:43,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:38:43,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:38:43,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:38:43,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:38:43,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 05:38:43,309 INFO L87 Difference]: Start difference. First operand 1034 states and 1876 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:38:49,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:38:49,861 INFO L93 Difference]: Finished difference Result 3696 states and 6823 transitions. [2023-11-29 05:38:49,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 05:38:49,861 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2023-11-29 05:38:49,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:38:49,875 INFO L225 Difference]: With dead ends: 3696 [2023-11-29 05:38:49,875 INFO L226 Difference]: Without dead ends: 2663 [2023-11-29 05:38:49,877 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 05:38:49,878 INFO L413 NwaCegarLoop]: 717 mSDtfsCounter, 2702 mSDsluCounter, 300 mSDsCounter, 0 mSdLazyCounter, 4127 mSolverCounterSat, 1487 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2702 SdHoareTripleChecker+Valid, 1017 SdHoareTripleChecker+Invalid, 5614 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1487 IncrementalHoareTripleChecker+Valid, 4127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2023-11-29 05:38:49,878 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2702 Valid, 1017 Invalid, 5614 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1487 Valid, 4127 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time] [2023-11-29 05:38:49,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2663 states. [2023-11-29 05:38:49,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2663 to 2662. [2023-11-29 05:38:49,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2662 states, 2661 states have (on average 1.4611048478015785) internal successors, (3888), 2661 states have internal predecessors, (3888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:38:49,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2662 states to 2662 states and 3888 transitions. [2023-11-29 05:38:49,955 INFO L78 Accepts]: Start accepts. Automaton has 2662 states and 3888 transitions. Word has length 29 [2023-11-29 05:38:49,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:38:49,955 INFO L495 AbstractCegarLoop]: Abstraction has 2662 states and 3888 transitions. [2023-11-29 05:38:49,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:38:49,956 INFO L276 IsEmpty]: Start isEmpty. Operand 2662 states and 3888 transitions. [2023-11-29 05:38:49,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2023-11-29 05:38:49,961 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:38:49,962 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:38:49,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 05:38:49,962 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:38:49,963 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:38:49,963 INFO L85 PathProgramCache]: Analyzing trace with hash 33751564, now seen corresponding path program 1 times [2023-11-29 05:38:49,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:38:49,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585024901] [2023-11-29 05:38:49,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:38:49,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:38:50,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:38:50,265 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:38:50,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:38:50,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585024901] [2023-11-29 05:38:50,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585024901] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:38:50,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:38:50,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:38:50,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735385740] [2023-11-29 05:38:50,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:38:50,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:38:50,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:38:50,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:38:50,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 05:38:50,269 INFO L87 Difference]: Start difference. First operand 2662 states and 3888 transitions. Second operand has 4 states, 4 states have (on average 38.5) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:38:57,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:38:57,303 INFO L93 Difference]: Finished difference Result 7865 states and 12669 transitions. [2023-11-29 05:38:57,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 05:38:57,304 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 154 [2023-11-29 05:38:57,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:38:57,337 INFO L225 Difference]: With dead ends: 7865 [2023-11-29 05:38:57,337 INFO L226 Difference]: Without dead ends: 5991 [2023-11-29 05:38:57,340 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 05:38:57,341 INFO L413 NwaCegarLoop]: 893 mSDtfsCounter, 1728 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 5286 mSolverCounterSat, 842 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1728 SdHoareTripleChecker+Valid, 1068 SdHoareTripleChecker+Invalid, 6128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 842 IncrementalHoareTripleChecker+Valid, 5286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2023-11-29 05:38:57,342 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1728 Valid, 1068 Invalid, 6128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [842 Valid, 5286 Invalid, 0 Unknown, 0 Unchecked, 6.9s Time] [2023-11-29 05:38:57,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5991 states. [2023-11-29 05:38:57,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5991 to 5858. [2023-11-29 05:38:57,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5858 states, 5857 states have (on average 1.4454498890216834) internal successors, (8466), 5857 states have internal predecessors, (8466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:38:57,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5858 states to 5858 states and 8466 transitions. [2023-11-29 05:38:57,475 INFO L78 Accepts]: Start accepts. Automaton has 5858 states and 8466 transitions. Word has length 154 [2023-11-29 05:38:57,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:38:57,476 INFO L495 AbstractCegarLoop]: Abstraction has 5858 states and 8466 transitions. [2023-11-29 05:38:57,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:38:57,476 INFO L276 IsEmpty]: Start isEmpty. Operand 5858 states and 8466 transitions. [2023-11-29 05:38:57,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2023-11-29 05:38:57,481 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:38:57,482 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-29 05:38:57,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 05:38:57,482 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:38:57,483 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:38:57,483 INFO L85 PathProgramCache]: Analyzing trace with hash 557807833, now seen corresponding path program 1 times [2023-11-29 05:38:57,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:38:57,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444640396] [2023-11-29 05:38:57,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:38:57,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:38:57,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:38:57,715 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-11-29 05:38:57,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:38:57,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444640396] [2023-11-29 05:38:57,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444640396] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:38:57,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:38:57,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 05:38:57,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545684768] [2023-11-29 05:38:57,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:38:57,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:38:57,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:38:57,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:38:57,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:38:57,719 INFO L87 Difference]: Start difference. First operand 5858 states and 8466 transitions. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 2 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:39:01,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:39:01,851 INFO L93 Difference]: Finished difference Result 15686 states and 23392 transitions. [2023-11-29 05:39:01,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:39:01,851 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 2 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 196 [2023-11-29 05:39:01,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:39:01,895 INFO L225 Difference]: With dead ends: 15686 [2023-11-29 05:39:01,895 INFO L226 Difference]: Without dead ends: 10616 [2023-11-29 05:39:01,900 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 05:39:01,901 INFO L413 NwaCegarLoop]: 783 mSDtfsCounter, 919 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 2555 mSolverCounterSat, 756 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 919 SdHoareTripleChecker+Valid, 916 SdHoareTripleChecker+Invalid, 3311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 756 IncrementalHoareTripleChecker+Valid, 2555 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:39:01,901 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [919 Valid, 916 Invalid, 3311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [756 Valid, 2555 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2023-11-29 05:39:01,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10616 states. [2023-11-29 05:39:02,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10616 to 10607. [2023-11-29 05:39:02,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10607 states, 10606 states have (on average 1.355364887799359) internal successors, (14375), 10606 states have internal predecessors, (14375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:39:02,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10607 states to 10607 states and 14375 transitions. [2023-11-29 05:39:02,086 INFO L78 Accepts]: Start accepts. Automaton has 10607 states and 14375 transitions. Word has length 196 [2023-11-29 05:39:02,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:39:02,086 INFO L495 AbstractCegarLoop]: Abstraction has 10607 states and 14375 transitions. [2023-11-29 05:39:02,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 2 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:39:02,087 INFO L276 IsEmpty]: Start isEmpty. Operand 10607 states and 14375 transitions. [2023-11-29 05:39:02,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2023-11-29 05:39:02,090 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:39:02,090 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-29 05:39:02,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 05:39:02,090 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:39:02,091 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:39:02,091 INFO L85 PathProgramCache]: Analyzing trace with hash 94447510, now seen corresponding path program 1 times [2023-11-29 05:39:02,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:39:02,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163157709] [2023-11-29 05:39:02,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:39:02,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:39:02,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:39:02,264 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-11-29 05:39:02,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:39:02,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163157709] [2023-11-29 05:39:02,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163157709] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:39:02,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:39:02,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 05:39:02,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888543237] [2023-11-29 05:39:02,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:39:02,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:39:02,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:39:02,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:39:02,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:39:02,267 INFO L87 Difference]: Start difference. First operand 10607 states and 14375 transitions. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 2 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:39:06,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:39:06,189 INFO L93 Difference]: Finished difference Result 28350 states and 39245 transitions. [2023-11-29 05:39:06,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:39:06,190 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 2 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 210 [2023-11-29 05:39:06,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:39:06,246 INFO L225 Difference]: With dead ends: 28350 [2023-11-29 05:39:06,246 INFO L226 Difference]: Without dead ends: 18531 [2023-11-29 05:39:06,256 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 05:39:06,257 INFO L413 NwaCegarLoop]: 446 mSDtfsCounter, 909 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 2873 mSolverCounterSat, 544 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 909 SdHoareTripleChecker+Valid, 611 SdHoareTripleChecker+Invalid, 3417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 544 IncrementalHoareTripleChecker+Valid, 2873 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2023-11-29 05:39:06,258 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [909 Valid, 611 Invalid, 3417 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [544 Valid, 2873 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2023-11-29 05:39:06,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18531 states. [2023-11-29 05:39:06,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18531 to 18522. [2023-11-29 05:39:06,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18522 states, 18521 states have (on average 1.3253604017061713) internal successors, (24547), 18521 states have internal predecessors, (24547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:39:06,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18522 states to 18522 states and 24547 transitions. [2023-11-29 05:39:06,578 INFO L78 Accepts]: Start accepts. Automaton has 18522 states and 24547 transitions. Word has length 210 [2023-11-29 05:39:06,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:39:06,578 INFO L495 AbstractCegarLoop]: Abstraction has 18522 states and 24547 transitions. [2023-11-29 05:39:06,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 2 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:39:06,579 INFO L276 IsEmpty]: Start isEmpty. Operand 18522 states and 24547 transitions. [2023-11-29 05:39:06,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2023-11-29 05:39:06,582 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:39:06,583 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:39:06,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 05:39:06,583 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:39:06,583 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:39:06,583 INFO L85 PathProgramCache]: Analyzing trace with hash -1576693496, now seen corresponding path program 1 times [2023-11-29 05:39:06,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:39:06,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652749766] [2023-11-29 05:39:06,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:39:06,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:39:06,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:39:06,871 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2023-11-29 05:39:06,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:39:06,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652749766] [2023-11-29 05:39:06,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652749766] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:39:06,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:39:06,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 05:39:06,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19859155] [2023-11-29 05:39:06,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:39:06,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:39:06,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:39:06,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:39:06,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:39:06,874 INFO L87 Difference]: Start difference. First operand 18522 states and 24547 transitions. Second operand has 3 states, 3 states have (on average 52.0) internal successors, (156), 2 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:39:10,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:39:10,725 INFO L93 Difference]: Finished difference Result 51207 states and 68760 transitions. [2023-11-29 05:39:10,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:39:10,725 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 2 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 222 [2023-11-29 05:39:10,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:39:10,772 INFO L225 Difference]: With dead ends: 51207 [2023-11-29 05:39:10,772 INFO L226 Difference]: Without dead ends: 33473 [2023-11-29 05:39:10,787 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 05:39:10,787 INFO L413 NwaCegarLoop]: 837 mSDtfsCounter, 857 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 2309 mSolverCounterSat, 870 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 857 SdHoareTripleChecker+Valid, 984 SdHoareTripleChecker+Invalid, 3179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 870 IncrementalHoareTripleChecker+Valid, 2309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2023-11-29 05:39:10,788 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [857 Valid, 984 Invalid, 3179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [870 Valid, 2309 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2023-11-29 05:39:10,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33473 states. [2023-11-29 05:39:11,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33473 to 32683. [2023-11-29 05:39:11,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32683 states, 32682 states have (on average 1.245425616547335) internal successors, (40703), 32682 states have internal predecessors, (40703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:39:11,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32683 states to 32683 states and 40703 transitions. [2023-11-29 05:39:11,293 INFO L78 Accepts]: Start accepts. Automaton has 32683 states and 40703 transitions. Word has length 222 [2023-11-29 05:39:11,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:39:11,294 INFO L495 AbstractCegarLoop]: Abstraction has 32683 states and 40703 transitions. [2023-11-29 05:39:11,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 2 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:39:11,294 INFO L276 IsEmpty]: Start isEmpty. Operand 32683 states and 40703 transitions. [2023-11-29 05:39:11,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2023-11-29 05:39:11,298 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:39:11,298 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-29 05:39:11,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 05:39:11,298 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:39:11,299 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:39:11,299 INFO L85 PathProgramCache]: Analyzing trace with hash 814448750, now seen corresponding path program 1 times [2023-11-29 05:39:11,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:39:11,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304411015] [2023-11-29 05:39:11,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:39:11,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:39:11,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:39:11,635 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 150 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:39:11,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:39:11,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304411015] [2023-11-29 05:39:11,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304411015] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:39:11,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:39:11,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:39:11,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476147411] [2023-11-29 05:39:11,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:39:11,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:39:11,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:39:11,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:39:11,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 05:39:11,638 INFO L87 Difference]: Start difference. First operand 32683 states and 40703 transitions. Second operand has 4 states, 4 states have (on average 56.5) internal successors, (226), 3 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:39:19,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:39:19,647 INFO L93 Difference]: Finished difference Result 87627 states and 111185 transitions. [2023-11-29 05:39:19,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 05:39:19,648 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 56.5) internal successors, (226), 3 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 226 [2023-11-29 05:39:19,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:39:19,707 INFO L225 Difference]: With dead ends: 87627 [2023-11-29 05:39:19,707 INFO L226 Difference]: Without dead ends: 55732 [2023-11-29 05:39:19,728 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 05:39:19,729 INFO L413 NwaCegarLoop]: 635 mSDtfsCounter, 1735 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 6143 mSolverCounterSat, 1128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1735 SdHoareTripleChecker+Valid, 835 SdHoareTripleChecker+Invalid, 7271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1128 IncrementalHoareTripleChecker+Valid, 6143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2023-11-29 05:39:19,730 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1735 Valid, 835 Invalid, 7271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1128 Valid, 6143 Invalid, 0 Unknown, 0 Unchecked, 7.6s Time] [2023-11-29 05:39:19,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55732 states. [2023-11-29 05:39:20,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55732 to 54815. [2023-11-29 05:39:20,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54815 states, 54814 states have (on average 1.2438610573940965) internal successors, (68181), 54814 states have internal predecessors, (68181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:39:20,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54815 states to 54815 states and 68181 transitions. [2023-11-29 05:39:20,312 INFO L78 Accepts]: Start accepts. Automaton has 54815 states and 68181 transitions. Word has length 226 [2023-11-29 05:39:20,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:39:20,312 INFO L495 AbstractCegarLoop]: Abstraction has 54815 states and 68181 transitions. [2023-11-29 05:39:20,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 56.5) internal successors, (226), 3 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:39:20,312 INFO L276 IsEmpty]: Start isEmpty. Operand 54815 states and 68181 transitions. [2023-11-29 05:39:20,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2023-11-29 05:39:20,315 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:39:20,315 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-29 05:39:20,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-29 05:39:20,315 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:39:20,315 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:39:20,316 INFO L85 PathProgramCache]: Analyzing trace with hash -1211315595, now seen corresponding path program 1 times [2023-11-29 05:39:20,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:39:20,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35451526] [2023-11-29 05:39:20,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:39:20,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:39:20,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:39:20,677 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 150 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:39:20,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:39:20,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35451526] [2023-11-29 05:39:20,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35451526] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:39:20,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:39:20,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:39:20,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771354581] [2023-11-29 05:39:20,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:39:20,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:39:20,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:39:20,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:39:20,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:39:20,679 INFO L87 Difference]: Start difference. First operand 54815 states and 68181 transitions. Second operand has 3 states, 3 states have (on average 78.66666666666667) internal successors, (236), 3 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 05:39:25,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:39:25,112 INFO L93 Difference]: Finished difference Result 152926 states and 191817 transitions. [2023-11-29 05:39:25,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:39:25,113 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 78.66666666666667) internal successors, (236), 3 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 236 [2023-11-29 05:39:25,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:39:25,235 INFO L225 Difference]: With dead ends: 152926 [2023-11-29 05:39:25,235 INFO L226 Difference]: Without dead ends: 98899 [2023-11-29 05:39:25,273 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 05:39:25,273 INFO L413 NwaCegarLoop]: 898 mSDtfsCounter, 817 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 2430 mSolverCounterSat, 896 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 817 SdHoareTripleChecker+Valid, 1014 SdHoareTripleChecker+Invalid, 3326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 896 IncrementalHoareTripleChecker+Valid, 2430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:39:25,274 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [817 Valid, 1014 Invalid, 3326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [896 Valid, 2430 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2023-11-29 05:39:25,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98899 states. [2023-11-29 05:39:26,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98899 to 98888. [2023-11-29 05:39:26,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98888 states, 98887 states have (on average 1.1900350905579096) internal successors, (117679), 98887 states have internal predecessors, (117679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:39:26,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98888 states to 98888 states and 117679 transitions. [2023-11-29 05:39:26,529 INFO L78 Accepts]: Start accepts. Automaton has 98888 states and 117679 transitions. Word has length 236 [2023-11-29 05:39:26,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:39:26,529 INFO L495 AbstractCegarLoop]: Abstraction has 98888 states and 117679 transitions. [2023-11-29 05:39:26,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.66666666666667) internal successors, (236), 3 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 05:39:26,529 INFO L276 IsEmpty]: Start isEmpty. Operand 98888 states and 117679 transitions. [2023-11-29 05:39:26,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2023-11-29 05:39:26,532 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:39:26,533 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-29 05:39:26,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-29 05:39:26,533 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:39:26,533 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:39:26,533 INFO L85 PathProgramCache]: Analyzing trace with hash 743653143, now seen corresponding path program 1 times [2023-11-29 05:39:26,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:39:26,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767966286] [2023-11-29 05:39:26,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:39:26,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:39:26,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:39:26,944 INFO L134 CoverageAnalysis]: Checked inductivity of 319 backedges. 196 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2023-11-29 05:39:26,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:39:26,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767966286] [2023-11-29 05:39:26,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767966286] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:39:26,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:39:26,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 05:39:26,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039830555] [2023-11-29 05:39:26,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:39:26,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:39:26,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:39:26,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:39:26,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:39:26,947 INFO L87 Difference]: Start difference. First operand 98888 states and 117679 transitions. Second operand has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 2 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:39:31,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:39:31,038 INFO L93 Difference]: Finished difference Result 182822 states and 219257 transitions. [2023-11-29 05:39:31,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:39:31,039 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 2 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 312 [2023-11-29 05:39:31,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:39:31,155 INFO L225 Difference]: With dead ends: 182822 [2023-11-29 05:39:31,155 INFO L226 Difference]: Without dead ends: 98900 [2023-11-29 05:39:31,198 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 05:39:31,198 INFO L413 NwaCegarLoop]: 1019 mSDtfsCounter, 730 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 2707 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 730 SdHoareTripleChecker+Valid, 1200 SdHoareTripleChecker+Invalid, 2711 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 2707 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2023-11-29 05:39:31,199 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [730 Valid, 1200 Invalid, 2711 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 2707 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2023-11-29 05:39:31,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98900 states. [2023-11-29 05:39:32,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98900 to 98888. [2023-11-29 05:39:32,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98888 states, 98887 states have (on average 1.1891249608138583) internal successors, (117589), 98887 states have internal predecessors, (117589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:39:32,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98888 states to 98888 states and 117589 transitions. [2023-11-29 05:39:32,275 INFO L78 Accepts]: Start accepts. Automaton has 98888 states and 117589 transitions. Word has length 312 [2023-11-29 05:39:32,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:39:32,276 INFO L495 AbstractCegarLoop]: Abstraction has 98888 states and 117589 transitions. [2023-11-29 05:39:32,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 2 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:39:32,276 INFO L276 IsEmpty]: Start isEmpty. Operand 98888 states and 117589 transitions. [2023-11-29 05:39:32,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2023-11-29 05:39:32,280 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:39:32,280 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:39:32,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-29 05:39:32,280 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:39:32,281 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:39:32,281 INFO L85 PathProgramCache]: Analyzing trace with hash 1038929910, now seen corresponding path program 1 times [2023-11-29 05:39:32,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:39:32,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117754534] [2023-11-29 05:39:32,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:39:32,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:39:32,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:39:32,740 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 267 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2023-11-29 05:39:32,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:39:32,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117754534] [2023-11-29 05:39:32,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117754534] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:39:32,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:39:32,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:39:32,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993722817] [2023-11-29 05:39:32,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:39:32,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:39:32,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:39:32,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:39:32,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:39:32,742 INFO L87 Difference]: Start difference. First operand 98888 states and 117589 transitions. Second operand has 3 states, 3 states have (on average 76.0) internal successors, (228), 3 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:39:37,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:39:37,091 INFO L93 Difference]: Finished difference Result 196993 states and 234398 transitions. [2023-11-29 05:39:37,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:39:37,092 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 76.0) internal successors, (228), 3 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 315 [2023-11-29 05:39:37,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:39:37,192 INFO L225 Difference]: With dead ends: 196993 [2023-11-29 05:39:37,192 INFO L226 Difference]: Without dead ends: 98893 [2023-11-29 05:39:37,213 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 05:39:37,213 INFO L413 NwaCegarLoop]: 1439 mSDtfsCounter, 941 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 2511 mSolverCounterSat, 602 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 941 SdHoareTripleChecker+Valid, 1531 SdHoareTripleChecker+Invalid, 3113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 602 IncrementalHoareTripleChecker+Valid, 2511 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2023-11-29 05:39:37,214 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [941 Valid, 1531 Invalid, 3113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [602 Valid, 2511 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2023-11-29 05:39:37,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98893 states. [2023-11-29 05:39:38,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98893 to 96519. [2023-11-29 05:39:38,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96519 states, 96518 states have (on average 1.1505004247912307) internal successors, (111044), 96518 states have internal predecessors, (111044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:39:38,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96519 states to 96519 states and 111044 transitions. [2023-11-29 05:39:38,199 INFO L78 Accepts]: Start accepts. Automaton has 96519 states and 111044 transitions. Word has length 315 [2023-11-29 05:39:38,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:39:38,199 INFO L495 AbstractCegarLoop]: Abstraction has 96519 states and 111044 transitions. [2023-11-29 05:39:38,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.0) internal successors, (228), 3 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:39:38,200 INFO L276 IsEmpty]: Start isEmpty. Operand 96519 states and 111044 transitions. [2023-11-29 05:39:38,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2023-11-29 05:39:38,202 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:39:38,203 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:39:38,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-29 05:39:38,203 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:39:38,203 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:39:38,203 INFO L85 PathProgramCache]: Analyzing trace with hash -325693443, now seen corresponding path program 1 times [2023-11-29 05:39:38,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:39:38,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022122426] [2023-11-29 05:39:38,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:39:38,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:39:38,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:39:38,824 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 267 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2023-11-29 05:39:38,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:39:38,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022122426] [2023-11-29 05:39:38,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1022122426] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:39:38,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:39:38,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:39:38,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893999994] [2023-11-29 05:39:38,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:39:38,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:39:38,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:39:38,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:39:38,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:39:38,827 INFO L87 Difference]: Start difference. First operand 96519 states and 111044 transitions. Second operand has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:39:43,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:39:43,119 INFO L93 Difference]: Finished difference Result 224526 states and 259959 transitions. [2023-11-29 05:39:43,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:39:43,120 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 325 [2023-11-29 05:39:43,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:39:43,375 INFO L225 Difference]: With dead ends: 224526 [2023-11-29 05:39:43,375 INFO L226 Difference]: Without dead ends: 128795 [2023-11-29 05:39:43,401 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 05:39:43,402 INFO L413 NwaCegarLoop]: 763 mSDtfsCounter, 911 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 2400 mSolverCounterSat, 798 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 911 SdHoareTripleChecker+Valid, 846 SdHoareTripleChecker+Invalid, 3198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 798 IncrementalHoareTripleChecker+Valid, 2400 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2023-11-29 05:39:43,402 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [911 Valid, 846 Invalid, 3198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [798 Valid, 2400 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2023-11-29 05:39:43,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128795 states. [2023-11-29 05:39:44,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128795 to 128774. [2023-11-29 05:39:44,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128774 states, 128773 states have (on average 1.1359601779876216) internal successors, (146281), 128773 states have internal predecessors, (146281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:39:44,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128774 states to 128774 states and 146281 transitions. [2023-11-29 05:39:44,790 INFO L78 Accepts]: Start accepts. Automaton has 128774 states and 146281 transitions. Word has length 325 [2023-11-29 05:39:44,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:39:44,791 INFO L495 AbstractCegarLoop]: Abstraction has 128774 states and 146281 transitions. [2023-11-29 05:39:44,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:39:44,791 INFO L276 IsEmpty]: Start isEmpty. Operand 128774 states and 146281 transitions. [2023-11-29 05:39:44,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 342 [2023-11-29 05:39:44,797 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:39:44,798 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-29 05:39:44,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-29 05:39:44,798 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:39:44,799 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:39:44,799 INFO L85 PathProgramCache]: Analyzing trace with hash 1937409119, now seen corresponding path program 1 times [2023-11-29 05:39:44,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:39:44,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045422283] [2023-11-29 05:39:44,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:39:44,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:39:44,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:39:46,144 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 199 proven. 110 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-11-29 05:39:46,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:39:46,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045422283] [2023-11-29 05:39:46,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045422283] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:39:46,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1156815374] [2023-11-29 05:39:46,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:39:46,145 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:39:46,145 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24984fb3-2018-4dd8-a81c-a69afb913d34/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:39:46,148 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24984fb3-2018-4dd8-a81c-a69afb913d34/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:39:46,152 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24984fb3-2018-4dd8-a81c-a69afb913d34/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 05:39:46,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:39:46,315 INFO L262 TraceCheckSpWp]: Trace formula consists of 479 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 05:39:46,328 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:39:46,449 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 224 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2023-11-29 05:39:46,450 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:39:46,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1156815374] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:39:46,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:39:46,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2023-11-29 05:39:46,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735904373] [2023-11-29 05:39:46,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:39:46,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:39:46,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:39:46,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:39:46,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-29 05:39:46,452 INFO L87 Difference]: Start difference. First operand 128774 states and 146281 transitions. Second operand has 3 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:39:50,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:39:50,325 INFO L93 Difference]: Finished difference Result 255971 states and 290736 transitions. [2023-11-29 05:39:50,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:39:50,325 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 341 [2023-11-29 05:39:50,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:39:50,455 INFO L225 Difference]: With dead ends: 255971 [2023-11-29 05:39:50,455 INFO L226 Difference]: Without dead ends: 127985 [2023-11-29 05:39:50,502 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 346 GetRequests, 340 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-29 05:39:50,503 INFO L413 NwaCegarLoop]: 1357 mSDtfsCounter, 1134 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 2465 mSolverCounterSat, 448 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1134 SdHoareTripleChecker+Valid, 1438 SdHoareTripleChecker+Invalid, 2913 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 448 IncrementalHoareTripleChecker+Valid, 2465 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-11-29 05:39:50,503 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1134 Valid, 1438 Invalid, 2913 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [448 Valid, 2465 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-11-29 05:39:50,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127985 states. [2023-11-29 05:39:51,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127985 to 127984. [2023-11-29 05:39:51,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127984 states, 127983 states have (on average 1.1008180774009049) internal successors, (140886), 127983 states have internal predecessors, (140886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:39:52,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127984 states to 127984 states and 140886 transitions. [2023-11-29 05:39:52,242 INFO L78 Accepts]: Start accepts. Automaton has 127984 states and 140886 transitions. Word has length 341 [2023-11-29 05:39:52,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:39:52,245 INFO L495 AbstractCegarLoop]: Abstraction has 127984 states and 140886 transitions. [2023-11-29 05:39:52,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:39:52,245 INFO L276 IsEmpty]: Start isEmpty. Operand 127984 states and 140886 transitions. [2023-11-29 05:39:52,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2023-11-29 05:39:52,272 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:39:52,272 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:39:52,279 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24984fb3-2018-4dd8-a81c-a69afb913d34/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 05:39:52,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24984fb3-2018-4dd8-a81c-a69afb913d34/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-29 05:39:52,478 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:39:52,478 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:39:52,478 INFO L85 PathProgramCache]: Analyzing trace with hash -1226242089, now seen corresponding path program 1 times [2023-11-29 05:39:52,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:39:52,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227151282] [2023-11-29 05:39:52,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:39:52,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:39:52,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:39:52,770 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2023-11-29 05:39:52,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:39:52,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227151282] [2023-11-29 05:39:52,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1227151282] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:39:52,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:39:52,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:39:52,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190478135] [2023-11-29 05:39:52,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:39:52,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:39:52,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:39:52,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:39:52,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:39:52,772 INFO L87 Difference]: Start difference. First operand 127984 states and 140886 transitions. Second operand has 3 states, 3 states have (on average 58.0) internal successors, (174), 3 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:39:56,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:39:56,697 INFO L93 Difference]: Finished difference Result 288262 states and 317523 transitions. [2023-11-29 05:39:56,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:39:56,698 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.0) internal successors, (174), 3 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 356 [2023-11-29 05:39:56,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:39:56,852 INFO L225 Difference]: With dead ends: 288262 [2023-11-29 05:39:56,852 INFO L226 Difference]: Without dead ends: 161066 [2023-11-29 05:39:56,887 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 05:39:56,888 INFO L413 NwaCegarLoop]: 952 mSDtfsCounter, 843 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 2453 mSolverCounterSat, 379 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 843 SdHoareTripleChecker+Valid, 1098 SdHoareTripleChecker+Invalid, 2832 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 379 IncrementalHoareTripleChecker+Valid, 2453 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-11-29 05:39:56,888 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [843 Valid, 1098 Invalid, 2832 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [379 Valid, 2453 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-11-29 05:39:57,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161066 states. [2023-11-29 05:39:58,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161066 to 157104. [2023-11-29 05:39:58,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157104 states, 157103 states have (on average 1.0928180874967377) internal successors, (171685), 157103 states have internal predecessors, (171685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:39:58,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157104 states to 157104 states and 171685 transitions. [2023-11-29 05:39:58,834 INFO L78 Accepts]: Start accepts. Automaton has 157104 states and 171685 transitions. Word has length 356 [2023-11-29 05:39:58,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:39:58,834 INFO L495 AbstractCegarLoop]: Abstraction has 157104 states and 171685 transitions. [2023-11-29 05:39:58,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.0) internal successors, (174), 3 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:39:58,835 INFO L276 IsEmpty]: Start isEmpty. Operand 157104 states and 171685 transitions. [2023-11-29 05:39:58,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2023-11-29 05:39:58,837 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:39:58,838 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:39:58,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-29 05:39:58,838 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:39:58,838 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:39:58,838 INFO L85 PathProgramCache]: Analyzing trace with hash 1564136177, now seen corresponding path program 1 times [2023-11-29 05:39:58,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:39:58,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552697230] [2023-11-29 05:39:58,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:39:58,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:39:58,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:39:59,559 INFO L134 CoverageAnalysis]: Checked inductivity of 556 backedges. 429 proven. 0 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2023-11-29 05:39:59,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:39:59,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552697230] [2023-11-29 05:39:59,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552697230] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:39:59,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:39:59,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:39:59,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141851547] [2023-11-29 05:39:59,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:39:59,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:39:59,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:39:59,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:39:59,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 05:39:59,562 INFO L87 Difference]: Start difference. First operand 157104 states and 171685 transitions. Second operand has 4 states, 4 states have (on average 65.25) internal successors, (261), 3 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:40:07,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:40:07,572 INFO L93 Difference]: Finished difference Result 360841 states and 394844 transitions. [2023-11-29 05:40:07,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 05:40:07,573 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 65.25) internal successors, (261), 3 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 358 [2023-11-29 05:40:07,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:40:07,822 INFO L225 Difference]: With dead ends: 360841 [2023-11-29 05:40:07,822 INFO L226 Difference]: Without dead ends: 204525 [2023-11-29 05:40:07,875 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 05:40:07,876 INFO L413 NwaCegarLoop]: 515 mSDtfsCounter, 1702 mSDsluCounter, 237 mSDsCounter, 0 mSdLazyCounter, 6524 mSolverCounterSat, 790 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1702 SdHoareTripleChecker+Valid, 752 SdHoareTripleChecker+Invalid, 7314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 790 IncrementalHoareTripleChecker+Valid, 6524 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:40:07,876 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1702 Valid, 752 Invalid, 7314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [790 Valid, 6524 Invalid, 0 Unknown, 0 Unchecked, 7.0s Time] [2023-11-29 05:40:08,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204525 states. [2023-11-29 05:40:09,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204525 to 203608. [2023-11-29 05:40:10,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203608 states, 203607 states have (on average 1.0939604237575329) internal successors, (222738), 203607 states have internal predecessors, (222738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:40:10,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203608 states to 203608 states and 222738 transitions. [2023-11-29 05:40:10,281 INFO L78 Accepts]: Start accepts. Automaton has 203608 states and 222738 transitions. Word has length 358 [2023-11-29 05:40:10,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:40:10,281 INFO L495 AbstractCegarLoop]: Abstraction has 203608 states and 222738 transitions. [2023-11-29 05:40:10,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 65.25) internal successors, (261), 3 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:40:10,281 INFO L276 IsEmpty]: Start isEmpty. Operand 203608 states and 222738 transitions. [2023-11-29 05:40:10,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 388 [2023-11-29 05:40:10,285 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:40:10,285 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:40:10,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-29 05:40:10,286 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:40:10,286 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:40:10,286 INFO L85 PathProgramCache]: Analyzing trace with hash 785127993, now seen corresponding path program 1 times [2023-11-29 05:40:10,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:40:10,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334118850] [2023-11-29 05:40:10,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:40:10,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:40:10,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:40:10,706 INFO L134 CoverageAnalysis]: Checked inductivity of 556 backedges. 429 proven. 0 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2023-11-29 05:40:10,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:40:10,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334118850] [2023-11-29 05:40:10,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334118850] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:40:10,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:40:10,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:40:10,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970050756] [2023-11-29 05:40:10,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:40:10,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:40:10,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:40:10,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:40:10,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:40:10,714 INFO L87 Difference]: Start difference. First operand 203608 states and 222738 transitions. Second operand has 3 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:40:15,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:40:15,037 INFO L93 Difference]: Finished difference Result 414265 states and 452541 transitions. [2023-11-29 05:40:15,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:40:15,038 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 387 [2023-11-29 05:40:15,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:40:15,279 INFO L225 Difference]: With dead ends: 414265 [2023-11-29 05:40:15,279 INFO L226 Difference]: Without dead ends: 211445 [2023-11-29 05:40:15,328 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 05:40:15,329 INFO L413 NwaCegarLoop]: 1492 mSDtfsCounter, 1027 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 2349 mSolverCounterSat, 590 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1027 SdHoareTripleChecker+Valid, 1624 SdHoareTripleChecker+Invalid, 2939 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 590 IncrementalHoareTripleChecker+Valid, 2349 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-11-29 05:40:15,329 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1027 Valid, 1624 Invalid, 2939 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [590 Valid, 2349 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-11-29 05:40:15,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211445 states. [2023-11-29 05:40:17,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211445 to 199625. [2023-11-29 05:40:17,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199625 states, 199624 states have (on average 1.0674968941610228) internal successors, (213098), 199624 states have internal predecessors, (213098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:40:17,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199625 states to 199625 states and 213098 transitions. [2023-11-29 05:40:17,880 INFO L78 Accepts]: Start accepts. Automaton has 199625 states and 213098 transitions. Word has length 387 [2023-11-29 05:40:17,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:40:17,881 INFO L495 AbstractCegarLoop]: Abstraction has 199625 states and 213098 transitions. [2023-11-29 05:40:17,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:40:17,881 INFO L276 IsEmpty]: Start isEmpty. Operand 199625 states and 213098 transitions. [2023-11-29 05:40:17,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 392 [2023-11-29 05:40:17,884 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:40:17,884 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:40:17,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-29 05:40:17,884 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:40:17,885 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:40:17,885 INFO L85 PathProgramCache]: Analyzing trace with hash 2133306304, now seen corresponding path program 1 times [2023-11-29 05:40:17,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:40:17,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124683642] [2023-11-29 05:40:17,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:40:17,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:40:17,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:40:18,249 INFO L134 CoverageAnalysis]: Checked inductivity of 348 backedges. 224 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2023-11-29 05:40:18,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:40:18,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124683642] [2023-11-29 05:40:18,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124683642] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:40:18,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:40:18,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:40:18,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086885357] [2023-11-29 05:40:18,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:40:18,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:40:18,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:40:18,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:40:18,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:40:18,251 INFO L87 Difference]: Start difference. First operand 199625 states and 213098 transitions. Second operand has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:40:23,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:40:23,468 INFO L93 Difference]: Finished difference Result 436245 states and 467048 transitions. [2023-11-29 05:40:23,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:40:23,468 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 391 [2023-11-29 05:40:23,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:40:23,721 INFO L225 Difference]: With dead ends: 436245 [2023-11-29 05:40:23,721 INFO L226 Difference]: Without dead ends: 237408 [2023-11-29 05:40:23,785 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 05:40:23,786 INFO L413 NwaCegarLoop]: 1742 mSDtfsCounter, 787 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 2513 mSolverCounterSat, 479 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 787 SdHoareTripleChecker+Valid, 1880 SdHoareTripleChecker+Invalid, 2992 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 479 IncrementalHoareTripleChecker+Valid, 2513 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2023-11-29 05:40:23,786 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [787 Valid, 1880 Invalid, 2992 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [479 Valid, 2513 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2023-11-29 05:40:23,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237408 states. [2023-11-29 05:40:26,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237408 to 231097. [2023-11-29 05:40:26,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231097 states, 231096 states have (on average 1.0627098694914667) internal successors, (245588), 231096 states have internal predecessors, (245588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:40:26,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231097 states to 231097 states and 245588 transitions. [2023-11-29 05:40:26,921 INFO L78 Accepts]: Start accepts. Automaton has 231097 states and 245588 transitions. Word has length 391 [2023-11-29 05:40:26,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:40:26,936 INFO L495 AbstractCegarLoop]: Abstraction has 231097 states and 245588 transitions. [2023-11-29 05:40:26,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:40:26,937 INFO L276 IsEmpty]: Start isEmpty. Operand 231097 states and 245588 transitions. [2023-11-29 05:40:26,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 493 [2023-11-29 05:40:26,962 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:40:26,962 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 05:40:26,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-29 05:40:26,963 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:40:26,963 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:40:26,963 INFO L85 PathProgramCache]: Analyzing trace with hash 730660434, now seen corresponding path program 1 times [2023-11-29 05:40:26,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:40:26,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880551912] [2023-11-29 05:40:26,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:40:26,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:40:27,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:40:28,406 INFO L134 CoverageAnalysis]: Checked inductivity of 896 backedges. 496 proven. 113 refuted. 0 times theorem prover too weak. 287 trivial. 0 not checked. [2023-11-29 05:40:28,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:40:28,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880551912] [2023-11-29 05:40:28,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880551912] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:40:28,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [378109108] [2023-11-29 05:40:28,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:40:28,406 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:40:28,407 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24984fb3-2018-4dd8-a81c-a69afb913d34/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:40:28,407 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24984fb3-2018-4dd8-a81c-a69afb913d34/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:40:28,410 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24984fb3-2018-4dd8-a81c-a69afb913d34/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 05:40:28,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:40:28,601 INFO L262 TraceCheckSpWp]: Trace formula consists of 690 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 05:40:28,611 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:40:28,719 INFO L134 CoverageAnalysis]: Checked inductivity of 896 backedges. 586 proven. 0 refuted. 0 times theorem prover too weak. 310 trivial. 0 not checked. [2023-11-29 05:40:28,719 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:40:28,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [378109108] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:40:28,720 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:40:28,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2023-11-29 05:40:28,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176101453] [2023-11-29 05:40:28,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:40:28,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:40:28,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:40:28,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:40:28,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-11-29 05:40:28,722 INFO L87 Difference]: Start difference. First operand 231097 states and 245588 transitions. Second operand has 3 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:40:33,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:40:33,052 INFO L93 Difference]: Finished difference Result 444095 states and 472544 transitions. [2023-11-29 05:40:33,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:40:33,052 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 492 [2023-11-29 05:40:33,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:40:33,319 INFO L225 Difference]: With dead ends: 444095 [2023-11-29 05:40:33,319 INFO L226 Difference]: Without dead ends: 231106 [2023-11-29 05:40:33,395 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 498 GetRequests, 491 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-11-29 05:40:33,396 INFO L413 NwaCegarLoop]: 479 mSDtfsCounter, 1033 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 2366 mSolverCounterSat, 668 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1033 SdHoareTripleChecker+Valid, 527 SdHoareTripleChecker+Invalid, 3034 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 668 IncrementalHoareTripleChecker+Valid, 2366 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-11-29 05:40:33,397 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1033 Valid, 527 Invalid, 3034 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [668 Valid, 2366 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-11-29 05:40:33,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231106 states. [2023-11-29 05:40:35,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231106 to 228736. [2023-11-29 05:40:35,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228736 states, 228735 states have (on average 1.0585699608717511) internal successors, (242132), 228735 states have internal predecessors, (242132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:40:36,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228736 states to 228736 states and 242132 transitions. [2023-11-29 05:40:36,504 INFO L78 Accepts]: Start accepts. Automaton has 228736 states and 242132 transitions. Word has length 492 [2023-11-29 05:40:36,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:40:36,505 INFO L495 AbstractCegarLoop]: Abstraction has 228736 states and 242132 transitions. [2023-11-29 05:40:36,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:40:36,516 INFO L276 IsEmpty]: Start isEmpty. Operand 228736 states and 242132 transitions. [2023-11-29 05:40:36,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 510 [2023-11-29 05:40:36,529 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:40:36,529 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:40:36,535 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24984fb3-2018-4dd8-a81c-a69afb913d34/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 05:40:36,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24984fb3-2018-4dd8-a81c-a69afb913d34/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:40:36,730 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:40:36,730 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:40:36,730 INFO L85 PathProgramCache]: Analyzing trace with hash -111198632, now seen corresponding path program 1 times [2023-11-29 05:40:36,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:40:36,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031491126] [2023-11-29 05:40:36,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:40:36,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:40:36,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:40:38,207 INFO L134 CoverageAnalysis]: Checked inductivity of 952 backedges. 530 proven. 113 refuted. 0 times theorem prover too weak. 309 trivial. 0 not checked. [2023-11-29 05:40:38,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:40:38,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031491126] [2023-11-29 05:40:38,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2031491126] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:40:38,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1563545734] [2023-11-29 05:40:38,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:40:38,208 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:40:38,208 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24984fb3-2018-4dd8-a81c-a69afb913d34/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:40:38,209 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24984fb3-2018-4dd8-a81c-a69afb913d34/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:40:38,211 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24984fb3-2018-4dd8-a81c-a69afb913d34/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 05:40:38,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:40:38,418 INFO L262 TraceCheckSpWp]: Trace formula consists of 708 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 05:40:38,423 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:40:38,519 INFO L134 CoverageAnalysis]: Checked inductivity of 952 backedges. 642 proven. 0 refuted. 0 times theorem prover too weak. 310 trivial. 0 not checked. [2023-11-29 05:40:38,519 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:40:38,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1563545734] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:40:38,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:40:38,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2023-11-29 05:40:38,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825747095] [2023-11-29 05:40:38,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:40:38,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:40:38,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:40:38,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:40:38,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-11-29 05:40:38,522 INFO L87 Difference]: Start difference. First operand 228736 states and 242132 transitions. Second operand has 3 states, 3 states have (on average 95.33333333333333) internal successors, (286), 3 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:40:42,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:40:42,792 INFO L93 Difference]: Finished difference Result 456690 states and 483396 transitions. [2023-11-29 05:40:42,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:40:42,793 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 95.33333333333333) internal successors, (286), 3 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 509 [2023-11-29 05:40:42,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:40:43,060 INFO L225 Difference]: With dead ends: 456690 [2023-11-29 05:40:43,060 INFO L226 Difference]: Without dead ends: 228742 [2023-11-29 05:40:43,131 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 515 GetRequests, 508 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-11-29 05:40:43,132 INFO L413 NwaCegarLoop]: 1542 mSDtfsCounter, 871 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 2457 mSolverCounterSat, 410 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 871 SdHoareTripleChecker+Valid, 1662 SdHoareTripleChecker+Invalid, 2867 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 410 IncrementalHoareTripleChecker+Valid, 2457 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:40:43,132 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [871 Valid, 1662 Invalid, 2867 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [410 Valid, 2457 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-11-29 05:40:43,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228742 states. [2023-11-29 05:40:45,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228742 to 225580. [2023-11-29 05:40:45,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225580 states, 225579 states have (on average 1.0524605570553998) internal successors, (237413), 225579 states have internal predecessors, (237413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:40:45,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225580 states to 225580 states and 237413 transitions. [2023-11-29 05:40:45,898 INFO L78 Accepts]: Start accepts. Automaton has 225580 states and 237413 transitions. Word has length 509 [2023-11-29 05:40:45,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:40:45,898 INFO L495 AbstractCegarLoop]: Abstraction has 225580 states and 237413 transitions. [2023-11-29 05:40:45,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 95.33333333333333) internal successors, (286), 3 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:40:45,899 INFO L276 IsEmpty]: Start isEmpty. Operand 225580 states and 237413 transitions. [2023-11-29 05:40:45,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 521 [2023-11-29 05:40:45,908 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:40:45,909 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:40:45,914 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24984fb3-2018-4dd8-a81c-a69afb913d34/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 05:40:46,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24984fb3-2018-4dd8-a81c-a69afb913d34/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:40:46,110 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:40:46,110 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:40:46,110 INFO L85 PathProgramCache]: Analyzing trace with hash -976881967, now seen corresponding path program 1 times [2023-11-29 05:40:46,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:40:46,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795938421] [2023-11-29 05:40:46,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:40:46,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:40:46,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:40:47,817 INFO L134 CoverageAnalysis]: Checked inductivity of 434 backedges. 293 proven. 113 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-11-29 05:40:47,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:40:47,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795938421] [2023-11-29 05:40:47,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795938421] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:40:47,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1933049563] [2023-11-29 05:40:47,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:40:47,817 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:40:47,817 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24984fb3-2018-4dd8-a81c-a69afb913d34/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:40:47,818 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24984fb3-2018-4dd8-a81c-a69afb913d34/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:40:47,819 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24984fb3-2018-4dd8-a81c-a69afb913d34/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 05:40:47,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:40:47,994 INFO L262 TraceCheckSpWp]: Trace formula consists of 658 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 05:40:48,000 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:40:48,669 INFO L134 CoverageAnalysis]: Checked inductivity of 434 backedges. 293 proven. 0 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2023-11-29 05:40:48,669 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:40:48,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1933049563] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:40:48,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:40:48,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2023-11-29 05:40:48,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313054017] [2023-11-29 05:40:48,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:40:48,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:40:48,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:40:48,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:40:48,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-11-29 05:40:48,672 INFO L87 Difference]: Start difference. First operand 225580 states and 237413 transitions. Second operand has 3 states, 3 states have (on average 127.0) internal successors, (381), 2 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) [2023-11-29 05:40:52,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:40:52,850 INFO L93 Difference]: Finished difference Result 438576 states and 462111 transitions. [2023-11-29 05:40:52,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:40:52,850 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 127.0) internal successors, (381), 2 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) Word has length 520 [2023-11-29 05:40:52,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:40:53,105 INFO L225 Difference]: With dead ends: 438576 [2023-11-29 05:40:53,105 INFO L226 Difference]: Without dead ends: 229528 [2023-11-29 05:40:53,189 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 526 GetRequests, 519 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-11-29 05:40:53,190 INFO L413 NwaCegarLoop]: 1022 mSDtfsCounter, 682 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 2455 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 682 SdHoareTripleChecker+Valid, 1156 SdHoareTripleChecker+Invalid, 2566 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 2455 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-11-29 05:40:53,190 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [682 Valid, 1156 Invalid, 2566 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 2455 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-11-29 05:40:53,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229528 states. [2023-11-29 05:40:55,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229528 to 227156. [2023-11-29 05:40:55,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227156 states, 227155 states have (on average 1.0481301314080693) internal successors, (238088), 227155 states have internal predecessors, (238088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:40:55,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227156 states to 227156 states and 238088 transitions. [2023-11-29 05:40:55,961 INFO L78 Accepts]: Start accepts. Automaton has 227156 states and 238088 transitions. Word has length 520 [2023-11-29 05:40:55,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:40:55,961 INFO L495 AbstractCegarLoop]: Abstraction has 227156 states and 238088 transitions. [2023-11-29 05:40:55,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 127.0) internal successors, (381), 2 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) [2023-11-29 05:40:55,961 INFO L276 IsEmpty]: Start isEmpty. Operand 227156 states and 238088 transitions. [2023-11-29 05:40:55,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 643 [2023-11-29 05:40:55,968 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:40:55,968 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:40:55,972 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24984fb3-2018-4dd8-a81c-a69afb913d34/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 05:40:56,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24984fb3-2018-4dd8-a81c-a69afb913d34/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:40:56,169 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:40:56,169 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:40:56,169 INFO L85 PathProgramCache]: Analyzing trace with hash -662476503, now seen corresponding path program 1 times [2023-11-29 05:40:56,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:40:56,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823229166] [2023-11-29 05:40:56,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:40:56,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:40:56,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:40:57,735 INFO L134 CoverageAnalysis]: Checked inductivity of 556 backedges. 468 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2023-11-29 05:40:57,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:40:57,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823229166] [2023-11-29 05:40:57,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823229166] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:40:57,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:40:57,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 05:40:57,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270228143] [2023-11-29 05:40:57,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:40:57,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:40:57,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:40:57,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:40:57,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 05:40:57,738 INFO L87 Difference]: Start difference. First operand 227156 states and 238088 transitions. Second operand has 4 states, 4 states have (on average 138.75) internal successors, (555), 4 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:41:05,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:41:05,683 INFO L93 Difference]: Finished difference Result 506345 states and 530953 transitions. [2023-11-29 05:41:05,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 05:41:05,683 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 138.75) internal successors, (555), 4 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 642 [2023-11-29 05:41:05,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:41:05,980 INFO L225 Difference]: With dead ends: 506345 [2023-11-29 05:41:05,980 INFO L226 Difference]: Without dead ends: 279977 [2023-11-29 05:41:06,065 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 05:41:06,066 INFO L413 NwaCegarLoop]: 1222 mSDtfsCounter, 1663 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 5272 mSolverCounterSat, 976 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1663 SdHoareTripleChecker+Valid, 1431 SdHoareTripleChecker+Invalid, 6248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 976 IncrementalHoareTripleChecker+Valid, 5272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2023-11-29 05:41:06,066 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1663 Valid, 1431 Invalid, 6248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [976 Valid, 5272 Invalid, 0 Unknown, 0 Unchecked, 6.6s Time] [2023-11-29 05:41:06,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279977 states. [2023-11-29 05:41:08,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279977 to 265737. [2023-11-29 05:41:08,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265737 states, 265736 states have (on average 1.0464972754914652) internal successors, (278092), 265736 states have internal predecessors, (278092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:41:09,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265737 states to 265737 states and 278092 transitions. [2023-11-29 05:41:09,152 INFO L78 Accepts]: Start accepts. Automaton has 265737 states and 278092 transitions. Word has length 642 [2023-11-29 05:41:09,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:41:09,152 INFO L495 AbstractCegarLoop]: Abstraction has 265737 states and 278092 transitions. [2023-11-29 05:41:09,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 138.75) internal successors, (555), 4 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:41:09,153 INFO L276 IsEmpty]: Start isEmpty. Operand 265737 states and 278092 transitions. [2023-11-29 05:41:09,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 733 [2023-11-29 05:41:09,164 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:41:09,165 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:41:09,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-29 05:41:09,165 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:41:09,165 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:41:09,166 INFO L85 PathProgramCache]: Analyzing trace with hash 298482643, now seen corresponding path program 1 times [2023-11-29 05:41:09,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:41:09,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469308863] [2023-11-29 05:41:09,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:41:09,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:41:09,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:41:10,487 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2023-11-29 05:41:10,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:41:10,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469308863] [2023-11-29 05:41:10,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469308863] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:41:10,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:41:10,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:41:10,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151633066] [2023-11-29 05:41:10,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:41:10,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:41:10,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:41:10,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:41:10,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 05:41:10,491 INFO L87 Difference]: Start difference. First operand 265737 states and 278092 transitions. Second operand has 4 states, 4 states have (on average 159.5) internal successors, (638), 3 states have internal predecessors, (638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:41:18,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:41:18,278 INFO L93 Difference]: Finished difference Result 585045 states and 613680 transitions. [2023-11-29 05:41:18,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 05:41:18,279 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 159.5) internal successors, (638), 3 states have internal predecessors, (638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 732 [2023-11-29 05:41:18,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:41:18,636 INFO L225 Difference]: With dead ends: 585045 [2023-11-29 05:41:18,636 INFO L226 Difference]: Without dead ends: 337416 [2023-11-29 05:41:18,701 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 05:41:18,702 INFO L413 NwaCegarLoop]: 590 mSDtfsCounter, 1176 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 5113 mSolverCounterSat, 758 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1176 SdHoareTripleChecker+Valid, 791 SdHoareTripleChecker+Invalid, 5871 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 758 IncrementalHoareTripleChecker+Valid, 5113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2023-11-29 05:41:18,702 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1176 Valid, 791 Invalid, 5871 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [758 Valid, 5113 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2023-11-29 05:41:18,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337416 states. [2023-11-29 05:41:21,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337416 to 306688. [2023-11-29 05:41:21,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 306688 states, 306687 states have (on average 1.0458187011513367) internal successors, (320739), 306687 states have internal predecessors, (320739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:41:22,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306688 states to 306688 states and 320739 transitions. [2023-11-29 05:41:22,244 INFO L78 Accepts]: Start accepts. Automaton has 306688 states and 320739 transitions. Word has length 732 [2023-11-29 05:41:22,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:41:22,245 INFO L495 AbstractCegarLoop]: Abstraction has 306688 states and 320739 transitions. [2023-11-29 05:41:22,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 159.5) internal successors, (638), 3 states have internal predecessors, (638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:41:22,245 INFO L276 IsEmpty]: Start isEmpty. Operand 306688 states and 320739 transitions. [2023-11-29 05:41:22,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 748 [2023-11-29 05:41:22,258 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:41:22,258 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:41:22,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-29 05:41:22,258 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:41:22,259 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:41:22,259 INFO L85 PathProgramCache]: Analyzing trace with hash 1022665547, now seen corresponding path program 1 times [2023-11-29 05:41:22,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:41:22,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135782601] [2023-11-29 05:41:22,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:41:22,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:41:22,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:41:23,060 INFO L134 CoverageAnalysis]: Checked inductivity of 765 backedges. 476 proven. 0 refuted. 0 times theorem prover too weak. 289 trivial. 0 not checked. [2023-11-29 05:41:23,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:41:23,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135782601] [2023-11-29 05:41:23,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135782601] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:41:23,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:41:23,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:41:23,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789120886] [2023-11-29 05:41:23,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:41:23,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:41:23,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:41:23,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:41:23,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:41:23,063 INFO L87 Difference]: Start difference. First operand 306688 states and 320739 transitions. Second operand has 3 states, 3 states have (on average 185.0) internal successors, (555), 3 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:41:27,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:41:27,500 INFO L93 Difference]: Finished difference Result 599936 states and 628515 transitions. [2023-11-29 05:41:27,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:41:27,501 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 185.0) internal successors, (555), 3 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 747 [2023-11-29 05:41:27,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:41:27,857 INFO L225 Difference]: With dead ends: 599936 [2023-11-29 05:41:27,857 INFO L226 Difference]: Without dead ends: 311355 [2023-11-29 05:41:27,965 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 05:41:27,966 INFO L413 NwaCegarLoop]: 1369 mSDtfsCounter, 973 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 2283 mSolverCounterSat, 421 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 973 SdHoareTripleChecker+Valid, 1443 SdHoareTripleChecker+Invalid, 2704 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 421 IncrementalHoareTripleChecker+Valid, 2283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:41:27,966 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [973 Valid, 1443 Invalid, 2704 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [421 Valid, 2283 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-11-29 05:41:28,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311355 states. [2023-11-29 05:41:31,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311355 to 305057. [2023-11-29 05:41:31,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 305057 states, 305056 states have (on average 1.043939473408161) internal successors, (318460), 305056 states have internal predecessors, (318460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:41:31,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305057 states to 305057 states and 318460 transitions. [2023-11-29 05:41:31,517 INFO L78 Accepts]: Start accepts. Automaton has 305057 states and 318460 transitions. Word has length 747 [2023-11-29 05:41:31,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:41:31,518 INFO L495 AbstractCegarLoop]: Abstraction has 305057 states and 318460 transitions. [2023-11-29 05:41:31,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 185.0) internal successors, (555), 3 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:41:31,518 INFO L276 IsEmpty]: Start isEmpty. Operand 305057 states and 318460 transitions. [2023-11-29 05:41:31,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 783 [2023-11-29 05:41:31,531 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:41:31,532 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:41:31,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-11-29 05:41:31,532 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:41:31,532 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:41:31,532 INFO L85 PathProgramCache]: Analyzing trace with hash 1140749889, now seen corresponding path program 1 times [2023-11-29 05:41:31,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:41:31,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116527424] [2023-11-29 05:41:31,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:41:31,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:41:31,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:41:32,486 INFO L134 CoverageAnalysis]: Checked inductivity of 784 backedges. 668 proven. 0 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2023-11-29 05:41:32,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:41:32,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116527424] [2023-11-29 05:41:32,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116527424] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:41:32,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:41:32,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:41:32,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144625474] [2023-11-29 05:41:32,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:41:32,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:41:32,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:41:32,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:41:32,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:41:32,490 INFO L87 Difference]: Start difference. First operand 305057 states and 318460 transitions. Second operand has 3 states, 3 states have (on average 222.66666666666666) internal successors, (668), 3 states have internal predecessors, (668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:41:38,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:41:38,486 INFO L93 Difference]: Finished difference Result 683444 states and 713894 transitions. [2023-11-29 05:41:38,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:41:38,487 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 222.66666666666666) internal successors, (668), 3 states have internal predecessors, (668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 782 [2023-11-29 05:41:38,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:41:38,872 INFO L225 Difference]: With dead ends: 683444 [2023-11-29 05:41:38,872 INFO L226 Difference]: Without dead ends: 379175 [2023-11-29 05:41:38,929 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 05:41:38,930 INFO L413 NwaCegarLoop]: 616 mSDtfsCounter, 815 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 2836 mSolverCounterSat, 505 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 815 SdHoareTripleChecker+Valid, 720 SdHoareTripleChecker+Invalid, 3341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 505 IncrementalHoareTripleChecker+Valid, 2836 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2023-11-29 05:41:38,930 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [815 Valid, 720 Invalid, 3341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [505 Valid, 2836 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2023-11-29 05:41:39,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379175 states. [2023-11-29 05:41:42,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379175 to 343636. [2023-11-29 05:41:42,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 343636 states, 343635 states have (on average 1.042972921850219) internal successors, (358402), 343635 states have internal predecessors, (358402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:41:42,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343636 states to 343636 states and 358402 transitions. [2023-11-29 05:41:42,874 INFO L78 Accepts]: Start accepts. Automaton has 343636 states and 358402 transitions. Word has length 782 [2023-11-29 05:41:42,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:41:42,875 INFO L495 AbstractCegarLoop]: Abstraction has 343636 states and 358402 transitions. [2023-11-29 05:41:42,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 222.66666666666666) internal successors, (668), 3 states have internal predecessors, (668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:41:42,875 INFO L276 IsEmpty]: Start isEmpty. Operand 343636 states and 358402 transitions. [2023-11-29 05:41:42,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 787 [2023-11-29 05:41:42,890 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:41:42,891 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:41:42,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-11-29 05:41:42,891 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:41:42,891 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:41:42,891 INFO L85 PathProgramCache]: Analyzing trace with hash 350910626, now seen corresponding path program 1 times [2023-11-29 05:41:42,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:41:42,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427059867] [2023-11-29 05:41:42,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:41:42,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:41:42,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:41:43,837 INFO L134 CoverageAnalysis]: Checked inductivity of 1243 backedges. 517 proven. 0 refuted. 0 times theorem prover too weak. 726 trivial. 0 not checked. [2023-11-29 05:41:43,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:41:43,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427059867] [2023-11-29 05:41:43,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427059867] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:41:43,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:41:43,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:41:43,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217762096] [2023-11-29 05:41:43,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:41:43,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:41:43,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:41:43,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:41:43,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:41:43,840 INFO L87 Difference]: Start difference. First operand 343636 states and 358402 transitions. Second operand has 3 states, 3 states have (on average 161.66666666666666) internal successors, (485), 3 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:41:48,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:41:48,175 INFO L93 Difference]: Finished difference Result 669958 states and 699316 transitions. [2023-11-29 05:41:48,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:41:48,176 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 161.66666666666666) internal successors, (485), 3 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 786 [2023-11-29 05:41:48,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:41:48,540 INFO L225 Difference]: With dead ends: 669958 [2023-11-29 05:41:48,540 INFO L226 Difference]: Without dead ends: 344428 [2023-11-29 05:41:48,656 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 05:41:48,657 INFO L413 NwaCegarLoop]: 1699 mSDtfsCounter, 722 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 2395 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 722 SdHoareTripleChecker+Valid, 1860 SdHoareTripleChecker+Invalid, 2412 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 2395 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-11-29 05:41:48,657 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [722 Valid, 1860 Invalid, 2412 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 2395 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-11-29 05:41:49,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344428 states. [2023-11-29 05:41:51,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344428 to 344424. [2023-11-29 05:41:52,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 344424 states, 344423 states have (on average 1.0429762240036236) internal successors, (359225), 344423 states have internal predecessors, (359225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:41:52,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344424 states to 344424 states and 359225 transitions. [2023-11-29 05:41:52,876 INFO L78 Accepts]: Start accepts. Automaton has 344424 states and 359225 transitions. Word has length 786 [2023-11-29 05:41:52,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:41:52,877 INFO L495 AbstractCegarLoop]: Abstraction has 344424 states and 359225 transitions. [2023-11-29 05:41:52,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 161.66666666666666) internal successors, (485), 3 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:41:52,877 INFO L276 IsEmpty]: Start isEmpty. Operand 344424 states and 359225 transitions. [2023-11-29 05:41:52,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 797 [2023-11-29 05:41:52,890 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:41:52,890 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:41:52,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-11-29 05:41:52,890 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:41:52,891 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:41:52,891 INFO L85 PathProgramCache]: Analyzing trace with hash 1580490481, now seen corresponding path program 1 times [2023-11-29 05:41:52,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:41:52,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178398033] [2023-11-29 05:41:52,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:41:52,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:41:52,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:41:54,255 INFO L134 CoverageAnalysis]: Checked inductivity of 757 backedges. 634 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2023-11-29 05:41:54,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:41:54,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178398033] [2023-11-29 05:41:54,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178398033] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:41:54,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:41:54,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:41:54,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135916378] [2023-11-29 05:41:54,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:41:54,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:41:54,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:41:54,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:41:54,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:41:54,259 INFO L87 Difference]: Start difference. First operand 344424 states and 359225 transitions. Second operand has 3 states, 3 states have (on average 225.0) internal successors, (675), 3 states have internal predecessors, (675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)