./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.5.2.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cabfaa32-2253-43fc-8ae2-38918686f1bc/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cabfaa32-2253-43fc-8ae2-38918686f1bc/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_cabfaa32-2253-43fc-8ae2-38918686f1bc/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cabfaa32-2253-43fc-8ae2-38918686f1bc/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.5.2.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cabfaa32-2253-43fc-8ae2-38918686f1bc/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_cabfaa32-2253-43fc-8ae2-38918686f1bc/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 d64f8292aca6df32fb4672436aa26b180650e8f6b53fd57d3a6fcdd53603ded8 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 05:18:30,265 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 05:18:30,328 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cabfaa32-2253-43fc-8ae2-38918686f1bc/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 05:18:30,334 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 05:18:30,335 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 05:18:30,360 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 05:18:30,361 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 05:18:30,361 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 05:18:30,362 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 05:18:30,362 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 05:18:30,363 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 05:18:30,363 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 05:18:30,364 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 05:18:30,365 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 05:18:30,365 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 05:18:30,366 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 05:18:30,366 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 05:18:30,367 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 05:18:30,367 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 05:18:30,368 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 05:18:30,368 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 05:18:30,369 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 05:18:30,370 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 05:18:30,370 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 05:18:30,371 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 05:18:30,371 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 05:18:30,371 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 05:18:30,372 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 05:18:30,372 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 05:18:30,373 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 05:18:30,373 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 05:18:30,374 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 05:18:30,374 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 05:18:30,374 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 05:18:30,374 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 05:18:30,375 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 05:18:30,375 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 05:18:30,375 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 05:18:30,375 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 05:18:30,375 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 05:18:30,375 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 05:18:30,376 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 05:18:30,376 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_cabfaa32-2253-43fc-8ae2-38918686f1bc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cabfaa32-2253-43fc-8ae2-38918686f1bc/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d64f8292aca6df32fb4672436aa26b180650e8f6b53fd57d3a6fcdd53603ded8 [2023-11-29 05:18:30,575 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 05:18:30,597 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 05:18:30,600 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 05:18:30,601 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 05:18:30,602 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 05:18:30,603 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cabfaa32-2253-43fc-8ae2-38918686f1bc/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.5.2.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2023-11-29 05:18:33,394 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 05:18:33,673 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 05:18:33,673 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cabfaa32-2253-43fc-8ae2-38918686f1bc/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.5.2.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2023-11-29 05:18:33,693 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cabfaa32-2253-43fc-8ae2-38918686f1bc/bin/uautomizer-verify-BQ2R08f2Ya/data/83d124a0b/ef64f00d4e1b42c79731431002eeaf11/FLAGb36f84724 [2023-11-29 05:18:33,706 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cabfaa32-2253-43fc-8ae2-38918686f1bc/bin/uautomizer-verify-BQ2R08f2Ya/data/83d124a0b/ef64f00d4e1b42c79731431002eeaf11 [2023-11-29 05:18:33,708 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 05:18:33,709 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 05:18:33,710 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 05:18:33,710 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 05:18:33,715 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 05:18:33,716 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 05:18:33" (1/1) ... [2023-11-29 05:18:33,717 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a09f772 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:18:33, skipping insertion in model container [2023-11-29 05:18:33,717 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 05:18:33" (1/1) ... [2023-11-29 05:18:33,835 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 05:18:34,201 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_cabfaa32-2253-43fc-8ae2-38918686f1bc/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.5.2.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c[21751,21764] [2023-11-29 05:18:34,345 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 05:18:34,362 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 05:18:34,462 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_cabfaa32-2253-43fc-8ae2-38918686f1bc/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.5.2.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c[21751,21764] [2023-11-29 05:18:34,538 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 05:18:34,560 INFO L206 MainTranslator]: Completed translation [2023-11-29 05:18:34,560 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:18:34 WrapperNode [2023-11-29 05:18:34,561 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 05:18:34,561 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 05:18:34,562 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 05:18:34,562 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 05:18:34,568 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:18:34" (1/1) ... [2023-11-29 05:18:34,597 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:18:34" (1/1) ... [2023-11-29 05:18:34,686 INFO L138 Inliner]: procedures = 24, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 2851 [2023-11-29 05:18:34,687 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 05:18:34,688 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 05:18:34,688 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 05:18:34,688 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 05:18:34,700 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:18:34" (1/1) ... [2023-11-29 05:18:34,700 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:18:34" (1/1) ... [2023-11-29 05:18:34,710 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:18:34" (1/1) ... [2023-11-29 05:18:34,742 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 05:18:34,742 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:18:34" (1/1) ... [2023-11-29 05:18:34,742 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:18:34" (1/1) ... [2023-11-29 05:18:34,770 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:18:34" (1/1) ... [2023-11-29 05:18:34,790 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:18:34" (1/1) ... [2023-11-29 05:18:34,799 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:18:34" (1/1) ... [2023-11-29 05:18:34,808 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:18:34" (1/1) ... [2023-11-29 05:18:34,819 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 05:18:34,820 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 05:18:34,820 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 05:18:34,820 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 05:18:34,821 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:18:34" (1/1) ... [2023-11-29 05:18:34,827 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 05:18:34,839 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cabfaa32-2253-43fc-8ae2-38918686f1bc/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:18:34,851 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cabfaa32-2253-43fc-8ae2-38918686f1bc/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 05:18:34,854 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cabfaa32-2253-43fc-8ae2-38918686f1bc/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 05:18:34,885 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 05:18:34,885 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 05:18:34,886 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 05:18:34,886 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 05:18:35,074 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 05:18:35,075 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 05:18:36,921 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 05:18:37,001 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 05:18:37,001 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-29 05:18:37,002 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 05:18:37 BoogieIcfgContainer [2023-11-29 05:18:37,002 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 05:18:37,004 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 05:18:37,005 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 05:18:37,008 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 05:18:37,009 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 05:18:33" (1/3) ... [2023-11-29 05:18:37,009 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d3db2a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 05:18:37, skipping insertion in model container [2023-11-29 05:18:37,009 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:18:34" (2/3) ... [2023-11-29 05:18:37,010 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d3db2a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 05:18:37, skipping insertion in model container [2023-11-29 05:18:37,010 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 05:18:37" (3/3) ... [2023-11-29 05:18:37,011 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_floodmax.5.2.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2023-11-29 05:18:37,032 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 05:18:37,032 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 05:18:37,099 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 05:18:37,105 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;@519fa41f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 05:18:37,105 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-29 05:18:37,130 INFO L276 IsEmpty]: Start isEmpty. Operand has 742 states, 732 states have (on average 1.8442622950819672) internal successors, (1350), 741 states have internal predecessors, (1350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:18:37,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2023-11-29 05:18:37,156 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:18:37,156 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:18:37,157 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:18:37,162 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:18:37,162 INFO L85 PathProgramCache]: Analyzing trace with hash -1014936547, now seen corresponding path program 1 times [2023-11-29 05:18:37,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:18:37,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474398090] [2023-11-29 05:18:37,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:18:37,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:18:37,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:37,773 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 05:18:37,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:18:37,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474398090] [2023-11-29 05:18:37,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474398090] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:18:37,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:18:37,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:18:37,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580676621] [2023-11-29 05:18:37,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:18:37,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:18:37,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:18:37,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:18:37,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:18:37,809 INFO L87 Difference]: Start difference. First operand has 742 states, 732 states have (on average 1.8442622950819672) internal successors, (1350), 741 states have internal predecessors, (1350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 67.66666666666667) internal successors, (203), 3 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:18:37,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:18:37,919 INFO L93 Difference]: Finished difference Result 1127 states and 1979 transitions. [2023-11-29 05:18:37,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:18:37,922 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 67.66666666666667) internal successors, (203), 3 states have internal predecessors, (203), 0 states have call successors, (0), 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 203 [2023-11-29 05:18:37,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:18:37,943 INFO L225 Difference]: With dead ends: 1127 [2023-11-29 05:18:37,943 INFO L226 Difference]: Without dead ends: 908 [2023-11-29 05:18:37,947 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 05:18:37,950 INFO L413 NwaCegarLoop]: 1346 mSDtfsCounter, 338 mSDsluCounter, 1242 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 338 SdHoareTripleChecker+Valid, 2588 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:18:37,951 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [338 Valid, 2588 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:18:37,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 908 states. [2023-11-29 05:18:38,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 908 to 906. [2023-11-29 05:18:38,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 906 states, 905 states have (on average 1.72707182320442) internal successors, (1563), 905 states have internal predecessors, (1563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:18:38,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 906 states to 906 states and 1563 transitions. [2023-11-29 05:18:38,031 INFO L78 Accepts]: Start accepts. Automaton has 906 states and 1563 transitions. Word has length 203 [2023-11-29 05:18:38,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:18:38,032 INFO L495 AbstractCegarLoop]: Abstraction has 906 states and 1563 transitions. [2023-11-29 05:18:38,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 67.66666666666667) internal successors, (203), 3 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:18:38,033 INFO L276 IsEmpty]: Start isEmpty. Operand 906 states and 1563 transitions. [2023-11-29 05:18:38,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2023-11-29 05:18:38,037 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:18:38,038 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:18:38,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 05:18:38,038 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:18:38,039 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:18:38,039 INFO L85 PathProgramCache]: Analyzing trace with hash 1480286202, now seen corresponding path program 1 times [2023-11-29 05:18:38,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:18:38,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215639934] [2023-11-29 05:18:38,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:18:38,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:18:38,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:38,329 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 05:18:38,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:18:38,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215639934] [2023-11-29 05:18:38,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215639934] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:18:38,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:18:38,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:18:38,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555154836] [2023-11-29 05:18:38,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:18:38,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:18:38,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:18:38,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:18:38,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:18:38,334 INFO L87 Difference]: Start difference. First operand 906 states and 1563 transitions. Second operand has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:18:38,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:18:38,379 INFO L93 Difference]: Finished difference Result 1612 states and 2723 transitions. [2023-11-29 05:18:38,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:18:38,379 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 0 states have call successors, (0), 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 207 [2023-11-29 05:18:38,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:18:38,388 INFO L225 Difference]: With dead ends: 1612 [2023-11-29 05:18:38,388 INFO L226 Difference]: Without dead ends: 1248 [2023-11-29 05:18:38,390 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 05:18:38,392 INFO L413 NwaCegarLoop]: 1471 mSDtfsCounter, 282 mSDsluCounter, 1225 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 282 SdHoareTripleChecker+Valid, 2696 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:18:38,392 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [282 Valid, 2696 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:18:38,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1248 states. [2023-11-29 05:18:38,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1248 to 1246. [2023-11-29 05:18:38,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1246 states, 1245 states have (on average 1.702008032128514) internal successors, (2119), 1245 states have internal predecessors, (2119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:18:38,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1246 states to 1246 states and 2119 transitions. [2023-11-29 05:18:38,430 INFO L78 Accepts]: Start accepts. Automaton has 1246 states and 2119 transitions. Word has length 207 [2023-11-29 05:18:38,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:18:38,431 INFO L495 AbstractCegarLoop]: Abstraction has 1246 states and 2119 transitions. [2023-11-29 05:18:38,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:18:38,432 INFO L276 IsEmpty]: Start isEmpty. Operand 1246 states and 2119 transitions. [2023-11-29 05:18:38,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2023-11-29 05:18:38,436 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:18:38,437 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:18:38,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 05:18:38,437 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:18:38,438 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:18:38,438 INFO L85 PathProgramCache]: Analyzing trace with hash -1250992074, now seen corresponding path program 1 times [2023-11-29 05:18:38,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:18:38,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330730226] [2023-11-29 05:18:38,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:18:38,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:18:38,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:38,638 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 05:18:38,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:18:38,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330730226] [2023-11-29 05:18:38,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330730226] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:18:38,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:18:38,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:18:38,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832075217] [2023-11-29 05:18:38,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:18:38,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:18:38,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:18:38,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:18:38,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:18:38,642 INFO L87 Difference]: Start difference. First operand 1246 states and 2119 transitions. Second operand has 3 states, 3 states have (on average 70.33333333333333) internal successors, (211), 3 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:18:38,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:18:38,687 INFO L93 Difference]: Finished difference Result 1945 states and 3271 transitions. [2023-11-29 05:18:38,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:18:38,688 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 70.33333333333333) internal successors, (211), 3 states have internal predecessors, (211), 0 states have call successors, (0), 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 211 [2023-11-29 05:18:38,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:18:38,698 INFO L225 Difference]: With dead ends: 1945 [2023-11-29 05:18:38,698 INFO L226 Difference]: Without dead ends: 1581 [2023-11-29 05:18:38,699 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 05:18:38,701 INFO L413 NwaCegarLoop]: 1472 mSDtfsCounter, 283 mSDsluCounter, 1232 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 283 SdHoareTripleChecker+Valid, 2704 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:18:38,701 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [283 Valid, 2704 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:18:38,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1581 states. [2023-11-29 05:18:38,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1581 to 1579. [2023-11-29 05:18:38,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1579 states, 1578 states have (on average 1.6888466413181242) internal successors, (2665), 1578 states have internal predecessors, (2665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:18:38,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1579 states to 1579 states and 2665 transitions. [2023-11-29 05:18:38,775 INFO L78 Accepts]: Start accepts. Automaton has 1579 states and 2665 transitions. Word has length 211 [2023-11-29 05:18:38,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:18:38,775 INFO L495 AbstractCegarLoop]: Abstraction has 1579 states and 2665 transitions. [2023-11-29 05:18:38,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.33333333333333) internal successors, (211), 3 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:18:38,776 INFO L276 IsEmpty]: Start isEmpty. Operand 1579 states and 2665 transitions. [2023-11-29 05:18:38,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2023-11-29 05:18:38,780 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:18:38,780 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:18:38,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 05:18:38,781 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:18:38,781 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:18:38,781 INFO L85 PathProgramCache]: Analyzing trace with hash 1198878909, now seen corresponding path program 1 times [2023-11-29 05:18:38,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:18:38,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066629260] [2023-11-29 05:18:38,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:18:38,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:18:38,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:39,035 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 05:18:39,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:18:39,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066629260] [2023-11-29 05:18:39,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066629260] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:18:39,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:18:39,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:18:39,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095309652] [2023-11-29 05:18:39,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:18:39,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:18:39,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:18:39,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:18:39,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:18:39,038 INFO L87 Difference]: Start difference. First operand 1579 states and 2665 transitions. Second operand has 3 states, 3 states have (on average 70.33333333333333) internal successors, (211), 3 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:18:39,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:18:39,089 INFO L93 Difference]: Finished difference Result 3513 states and 5825 transitions. [2023-11-29 05:18:39,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:18:39,089 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 70.33333333333333) internal successors, (211), 3 states have internal predecessors, (211), 0 states have call successors, (0), 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 211 [2023-11-29 05:18:39,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:18:39,104 INFO L225 Difference]: With dead ends: 3513 [2023-11-29 05:18:39,105 INFO L226 Difference]: Without dead ends: 2513 [2023-11-29 05:18:39,106 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 05:18:39,107 INFO L413 NwaCegarLoop]: 1274 mSDtfsCounter, 275 mSDsluCounter, 1226 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 275 SdHoareTripleChecker+Valid, 2500 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:18:39,108 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [275 Valid, 2500 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:18:39,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2513 states. [2023-11-29 05:18:39,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2513 to 2511. [2023-11-29 05:18:39,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2511 states, 2510 states have (on average 1.6633466135458168) internal successors, (4175), 2510 states have internal predecessors, (4175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:18:39,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2511 states to 2511 states and 4175 transitions. [2023-11-29 05:18:39,179 INFO L78 Accepts]: Start accepts. Automaton has 2511 states and 4175 transitions. Word has length 211 [2023-11-29 05:18:39,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:18:39,179 INFO L495 AbstractCegarLoop]: Abstraction has 2511 states and 4175 transitions. [2023-11-29 05:18:39,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.33333333333333) internal successors, (211), 3 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:18:39,180 INFO L276 IsEmpty]: Start isEmpty. Operand 2511 states and 4175 transitions. [2023-11-29 05:18:39,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2023-11-29 05:18:39,184 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:18:39,184 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:18:39,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 05:18:39,185 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:18:39,185 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:18:39,186 INFO L85 PathProgramCache]: Analyzing trace with hash -735486374, now seen corresponding path program 1 times [2023-11-29 05:18:39,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:18:39,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482658480] [2023-11-29 05:18:39,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:18:39,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:18:39,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:39,451 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 05:18:39,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:18:39,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482658480] [2023-11-29 05:18:39,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482658480] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:18:39,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:18:39,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:18:39,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308031163] [2023-11-29 05:18:39,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:18:39,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:18:39,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:18:39,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:18:39,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:18:39,455 INFO L87 Difference]: Start difference. First operand 2511 states and 4175 transitions. Second operand has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:18:39,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:18:39,535 INFO L93 Difference]: Finished difference Result 6243 states and 10229 transitions. [2023-11-29 05:18:39,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:18:39,536 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 0 states have call successors, (0), 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 215 [2023-11-29 05:18:39,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:18:39,561 INFO L225 Difference]: With dead ends: 6243 [2023-11-29 05:18:39,562 INFO L226 Difference]: Without dead ends: 4311 [2023-11-29 05:18:39,565 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 05:18:39,566 INFO L413 NwaCegarLoop]: 1379 mSDtfsCounter, 268 mSDsluCounter, 1227 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 268 SdHoareTripleChecker+Valid, 2606 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:18:39,567 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [268 Valid, 2606 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:18:39,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4311 states. [2023-11-29 05:18:39,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4311 to 4309. [2023-11-29 05:18:39,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4309 states, 4308 states have (on average 1.6395078922934077) internal successors, (7063), 4308 states have internal predecessors, (7063), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:18:39,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4309 states to 4309 states and 7063 transitions. [2023-11-29 05:18:39,701 INFO L78 Accepts]: Start accepts. Automaton has 4309 states and 7063 transitions. Word has length 215 [2023-11-29 05:18:39,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:18:39,702 INFO L495 AbstractCegarLoop]: Abstraction has 4309 states and 7063 transitions. [2023-11-29 05:18:39,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:18:39,702 INFO L276 IsEmpty]: Start isEmpty. Operand 4309 states and 7063 transitions. [2023-11-29 05:18:39,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2023-11-29 05:18:39,707 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:18:39,707 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:18:39,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 05:18:39,708 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:18:39,708 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:18:39,708 INFO L85 PathProgramCache]: Analyzing trace with hash -1762205722, now seen corresponding path program 1 times [2023-11-29 05:18:39,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:18:39,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103372521] [2023-11-29 05:18:39,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:18:39,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:18:39,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:39,895 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 05:18:39,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:18:39,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103372521] [2023-11-29 05:18:39,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103372521] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:18:39,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:18:39,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:18:39,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741921678] [2023-11-29 05:18:39,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:18:39,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:18:39,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:18:39,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:18:39,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:18:39,899 INFO L87 Difference]: Start difference. First operand 4309 states and 7063 transitions. Second operand has 3 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:18:39,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:18:39,980 INFO L93 Difference]: Finished difference Result 7893 states and 12887 transitions. [2023-11-29 05:18:39,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:18:39,981 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 0 states have call successors, (0), 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 219 [2023-11-29 05:18:39,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:18:40,014 INFO L225 Difference]: With dead ends: 7893 [2023-11-29 05:18:40,017 INFO L226 Difference]: Without dead ends: 5961 [2023-11-29 05:18:40,021 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 05:18:40,022 INFO L413 NwaCegarLoop]: 1379 mSDtfsCounter, 269 mSDsluCounter, 1234 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 269 SdHoareTripleChecker+Valid, 2613 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:18:40,022 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [269 Valid, 2613 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:18:40,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5961 states. [2023-11-29 05:18:40,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5961 to 5959. [2023-11-29 05:18:40,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5959 states, 5958 states have (on average 1.6309164149043303) internal successors, (9717), 5958 states have internal predecessors, (9717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:18:40,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5959 states to 5959 states and 9717 transitions. [2023-11-29 05:18:40,200 INFO L78 Accepts]: Start accepts. Automaton has 5959 states and 9717 transitions. Word has length 219 [2023-11-29 05:18:40,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:18:40,201 INFO L495 AbstractCegarLoop]: Abstraction has 5959 states and 9717 transitions. [2023-11-29 05:18:40,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:18:40,201 INFO L276 IsEmpty]: Start isEmpty. Operand 5959 states and 9717 transitions. [2023-11-29 05:18:40,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2023-11-29 05:18:40,206 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:18:40,206 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:18:40,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 05:18:40,206 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:18:40,207 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:18:40,207 INFO L85 PathProgramCache]: Analyzing trace with hash -1811518115, now seen corresponding path program 1 times [2023-11-29 05:18:40,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:18:40,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594908032] [2023-11-29 05:18:40,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:18:40,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:18:40,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:40,421 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 05:18:40,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:18:40,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594908032] [2023-11-29 05:18:40,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [594908032] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:18:40,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:18:40,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:18:40,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146463411] [2023-11-29 05:18:40,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:18:40,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:18:40,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:18:40,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:18:40,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:18:40,424 INFO L87 Difference]: Start difference. First operand 5959 states and 9717 transitions. Second operand has 3 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:18:40,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:18:40,541 INFO L93 Difference]: Finished difference Result 16091 states and 25979 transitions. [2023-11-29 05:18:40,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:18:40,542 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 0 states have call successors, (0), 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 219 [2023-11-29 05:18:40,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:18:40,593 INFO L225 Difference]: With dead ends: 16091 [2023-11-29 05:18:40,594 INFO L226 Difference]: Without dead ends: 10827 [2023-11-29 05:18:40,602 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 05:18:40,602 INFO L413 NwaCegarLoop]: 1275 mSDtfsCounter, 261 mSDsluCounter, 1228 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 261 SdHoareTripleChecker+Valid, 2503 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:18:40,603 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [261 Valid, 2503 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:18:40,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10827 states. [2023-11-29 05:18:40,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10827 to 10825. [2023-11-29 05:18:40,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10825 states, 10824 states have (on average 1.6105875831485588) internal successors, (17433), 10824 states have internal predecessors, (17433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:18:40,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10825 states to 10825 states and 17433 transitions. [2023-11-29 05:18:40,885 INFO L78 Accepts]: Start accepts. Automaton has 10825 states and 17433 transitions. Word has length 219 [2023-11-29 05:18:40,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:18:40,886 INFO L495 AbstractCegarLoop]: Abstraction has 10825 states and 17433 transitions. [2023-11-29 05:18:40,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:18:40,886 INFO L276 IsEmpty]: Start isEmpty. Operand 10825 states and 17433 transitions. [2023-11-29 05:18:40,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2023-11-29 05:18:40,890 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:18:40,891 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:18:40,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-29 05:18:40,891 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:18:40,891 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:18:40,892 INFO L85 PathProgramCache]: Analyzing trace with hash -1625652038, now seen corresponding path program 1 times [2023-11-29 05:18:40,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:18:40,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132344022] [2023-11-29 05:18:40,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:18:40,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:18:40,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:41,235 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 05:18:41,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:18:41,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132344022] [2023-11-29 05:18:41,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2132344022] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:18:41,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:18:41,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 05:18:41,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084621831] [2023-11-29 05:18:41,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:18:41,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 05:18:41,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:18:41,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 05:18:41,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 05:18:41,239 INFO L87 Difference]: Start difference. First operand 10825 states and 17433 transitions. Second operand has 7 states, 7 states have (on average 31.857142857142858) internal successors, (223), 7 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:18:41,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:18:41,825 INFO L93 Difference]: Finished difference Result 73703 states and 118962 transitions. [2023-11-29 05:18:41,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 05:18:41,826 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 31.857142857142858) internal successors, (223), 7 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 223 [2023-11-29 05:18:41,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:18:41,934 INFO L225 Difference]: With dead ends: 73703 [2023-11-29 05:18:41,934 INFO L226 Difference]: Without dead ends: 63435 [2023-11-29 05:18:41,957 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2023-11-29 05:18:41,957 INFO L413 NwaCegarLoop]: 1267 mSDtfsCounter, 4403 mSDsluCounter, 9018 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4403 SdHoareTripleChecker+Valid, 10285 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 05:18:41,958 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4403 Valid, 10285 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 05:18:42,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63435 states. [2023-11-29 05:18:42,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63435 to 20462. [2023-11-29 05:18:42,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20462 states, 20461 states have (on average 1.6140462342993989) internal successors, (33025), 20461 states have internal predecessors, (33025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:18:42,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20462 states to 20462 states and 33025 transitions. [2023-11-29 05:18:42,622 INFO L78 Accepts]: Start accepts. Automaton has 20462 states and 33025 transitions. Word has length 223 [2023-11-29 05:18:42,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:18:42,622 INFO L495 AbstractCegarLoop]: Abstraction has 20462 states and 33025 transitions. [2023-11-29 05:18:42,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 31.857142857142858) internal successors, (223), 7 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:18:42,623 INFO L276 IsEmpty]: Start isEmpty. Operand 20462 states and 33025 transitions. [2023-11-29 05:18:42,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2023-11-29 05:18:42,629 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:18:42,629 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:18:42,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-29 05:18:42,629 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:18:42,630 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:18:42,630 INFO L85 PathProgramCache]: Analyzing trace with hash 1072774625, now seen corresponding path program 1 times [2023-11-29 05:18:42,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:18:42,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923395621] [2023-11-29 05:18:42,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:18:42,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:18:42,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:42,854 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 05:18:42,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:18:42,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923395621] [2023-11-29 05:18:42,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923395621] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:18:42,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:18:42,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 05:18:42,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409717741] [2023-11-29 05:18:42,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:18:42,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:18:42,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:18:42,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:18:42,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 05:18:42,857 INFO L87 Difference]: Start difference. First operand 20462 states and 33025 transitions. Second operand has 4 states, 4 states have (on average 56.0) internal successors, (224), 4 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:18:43,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:18:43,124 INFO L93 Difference]: Finished difference Result 60927 states and 98430 transitions. [2023-11-29 05:18:43,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 05:18:43,125 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 56.0) internal successors, (224), 4 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 224 [2023-11-29 05:18:43,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:18:43,160 INFO L225 Difference]: With dead ends: 60927 [2023-11-29 05:18:43,160 INFO L226 Difference]: Without dead ends: 41222 [2023-11-29 05:18:43,178 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 05:18:43,179 INFO L413 NwaCegarLoop]: 1268 mSDtfsCounter, 909 mSDsluCounter, 2615 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 909 SdHoareTripleChecker+Valid, 3883 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:18:43,179 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [909 Valid, 3883 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:18:43,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41222 states. [2023-11-29 05:18:43,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41222 to 30764. [2023-11-29 05:18:43,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30764 states, 30763 states have (on average 1.6121639632025486) internal successors, (49595), 30763 states have internal predecessors, (49595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:18:43,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30764 states to 30764 states and 49595 transitions. [2023-11-29 05:18:43,702 INFO L78 Accepts]: Start accepts. Automaton has 30764 states and 49595 transitions. Word has length 224 [2023-11-29 05:18:43,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:18:43,702 INFO L495 AbstractCegarLoop]: Abstraction has 30764 states and 49595 transitions. [2023-11-29 05:18:43,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 56.0) internal successors, (224), 4 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:18:43,703 INFO L276 IsEmpty]: Start isEmpty. Operand 30764 states and 49595 transitions. [2023-11-29 05:18:43,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2023-11-29 05:18:43,710 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:18:43,710 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:18:43,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-29 05:18:43,710 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:18:43,711 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:18:43,711 INFO L85 PathProgramCache]: Analyzing trace with hash 1860956234, now seen corresponding path program 1 times [2023-11-29 05:18:43,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:18:43,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921935744] [2023-11-29 05:18:43,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:18:43,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:18:43,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:43,912 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 05:18:43,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:18:43,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921935744] [2023-11-29 05:18:43,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921935744] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:18:43,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:18:43,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:18:43,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639907059] [2023-11-29 05:18:43,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:18:43,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:18:43,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:18:43,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:18:43,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:18:43,915 INFO L87 Difference]: Start difference. First operand 30764 states and 49595 transitions. Second operand has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:18:44,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:18:44,331 INFO L93 Difference]: Finished difference Result 58826 states and 94885 transitions. [2023-11-29 05:18:44,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:18:44,332 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 224 [2023-11-29 05:18:44,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:18:44,389 INFO L225 Difference]: With dead ends: 58826 [2023-11-29 05:18:44,389 INFO L226 Difference]: Without dead ends: 43128 [2023-11-29 05:18:44,407 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 05:18:44,408 INFO L413 NwaCegarLoop]: 1345 mSDtfsCounter, 262 mSDsluCounter, 1235 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 262 SdHoareTripleChecker+Valid, 2580 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:18:44,408 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [262 Valid, 2580 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:18:44,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43128 states. [2023-11-29 05:18:44,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43128 to 43126. [2023-11-29 05:18:44,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43126 states, 43125 states have (on average 1.6064231884057971) internal successors, (69277), 43125 states have internal predecessors, (69277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:18:44,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43126 states to 43126 states and 69277 transitions. [2023-11-29 05:18:44,787 INFO L78 Accepts]: Start accepts. Automaton has 43126 states and 69277 transitions. Word has length 224 [2023-11-29 05:18:44,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:18:44,787 INFO L495 AbstractCegarLoop]: Abstraction has 43126 states and 69277 transitions. [2023-11-29 05:18:44,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:18:44,788 INFO L276 IsEmpty]: Start isEmpty. Operand 43126 states and 69277 transitions. [2023-11-29 05:18:44,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2023-11-29 05:18:44,793 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:18:44,793 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:18:44,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-29 05:18:44,793 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:18:44,794 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:18:44,794 INFO L85 PathProgramCache]: Analyzing trace with hash 1308500106, now seen corresponding path program 1 times [2023-11-29 05:18:44,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:18:44,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075478921] [2023-11-29 05:18:44,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:18:44,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:18:44,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:44,936 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 05:18:44,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:18:44,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075478921] [2023-11-29 05:18:44,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075478921] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:18:44,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:18:44,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:18:44,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646959341] [2023-11-29 05:18:44,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:18:44,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:18:44,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:18:44,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:18:44,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:18:44,939 INFO L87 Difference]: Start difference. First operand 43126 states and 69277 transitions. Second operand has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:18:45,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:18:45,296 INFO L93 Difference]: Finished difference Result 81902 states and 131703 transitions. [2023-11-29 05:18:45,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:18:45,297 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 224 [2023-11-29 05:18:45,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:18:45,368 INFO L225 Difference]: With dead ends: 81902 [2023-11-29 05:18:45,368 INFO L226 Difference]: Without dead ends: 59651 [2023-11-29 05:18:45,389 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 05:18:45,390 INFO L413 NwaCegarLoop]: 1437 mSDtfsCounter, 276 mSDsluCounter, 1233 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 276 SdHoareTripleChecker+Valid, 2670 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:18:45,390 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [276 Valid, 2670 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:18:45,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59651 states. [2023-11-29 05:18:45,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59651 to 59649. [2023-11-29 05:18:46,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59649 states, 59648 states have (on average 1.6008080740343347) internal successors, (95485), 59648 states have internal predecessors, (95485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:18:46,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59649 states to 59649 states and 95485 transitions. [2023-11-29 05:18:46,138 INFO L78 Accepts]: Start accepts. Automaton has 59649 states and 95485 transitions. Word has length 224 [2023-11-29 05:18:46,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:18:46,139 INFO L495 AbstractCegarLoop]: Abstraction has 59649 states and 95485 transitions. [2023-11-29 05:18:46,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:18:46,139 INFO L276 IsEmpty]: Start isEmpty. Operand 59649 states and 95485 transitions. [2023-11-29 05:18:46,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2023-11-29 05:18:46,144 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:18:46,145 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:18:46,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-29 05:18:46,145 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:18:46,145 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:18:46,146 INFO L85 PathProgramCache]: Analyzing trace with hash -1693818678, now seen corresponding path program 1 times [2023-11-29 05:18:46,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:18:46,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77368392] [2023-11-29 05:18:46,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:18:46,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:18:46,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:46,322 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 05:18:46,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:18:46,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77368392] [2023-11-29 05:18:46,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77368392] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:18:46,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:18:46,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:18:46,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755796404] [2023-11-29 05:18:46,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:18:46,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:18:46,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:18:46,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:18:46,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:18:46,326 INFO L87 Difference]: Start difference. First operand 59649 states and 95485 transitions. Second operand has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:18:46,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:18:46,797 INFO L93 Difference]: Finished difference Result 131061 states and 209579 transitions. [2023-11-29 05:18:46,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:18:46,798 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 224 [2023-11-29 05:18:46,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:18:46,892 INFO L225 Difference]: With dead ends: 131061 [2023-11-29 05:18:46,892 INFO L226 Difference]: Without dead ends: 89883 [2023-11-29 05:18:46,925 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 05:18:46,925 INFO L413 NwaCegarLoop]: 1524 mSDtfsCounter, 290 mSDsluCounter, 1231 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 290 SdHoareTripleChecker+Valid, 2755 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:18:46,926 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [290 Valid, 2755 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:18:46,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89883 states. [2023-11-29 05:18:47,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89883 to 89881. [2023-11-29 05:18:47,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89881 states, 89880 states have (on average 1.5908210947930574) internal successors, (142983), 89880 states have internal predecessors, (142983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:18:48,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89881 states to 89881 states and 142983 transitions. [2023-11-29 05:18:48,056 INFO L78 Accepts]: Start accepts. Automaton has 89881 states and 142983 transitions. Word has length 224 [2023-11-29 05:18:48,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:18:48,056 INFO L495 AbstractCegarLoop]: Abstraction has 89881 states and 142983 transitions. [2023-11-29 05:18:48,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:18:48,057 INFO L276 IsEmpty]: Start isEmpty. Operand 89881 states and 142983 transitions. [2023-11-29 05:18:48,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2023-11-29 05:18:48,059 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:18:48,060 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:18:48,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-29 05:18:48,060 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:18:48,060 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:18:48,061 INFO L85 PathProgramCache]: Analyzing trace with hash 819275357, now seen corresponding path program 1 times [2023-11-29 05:18:48,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:18:48,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097223093] [2023-11-29 05:18:48,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:18:48,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:18:48,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:49,068 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 05:18:49,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:18:49,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097223093] [2023-11-29 05:18:49,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097223093] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:18:49,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:18:49,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 05:18:49,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068255885] [2023-11-29 05:18:49,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:18:49,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 05:18:49,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:18:49,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 05:18:49,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 05:18:49,071 INFO L87 Difference]: Start difference. First operand 89881 states and 142983 transitions. Second operand has 5 states, 5 states have (on average 46.8) internal successors, (234), 5 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:18:49,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:18:49,611 INFO L93 Difference]: Finished difference Result 149095 states and 236044 transitions. [2023-11-29 05:18:49,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 05:18:49,612 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 46.8) internal successors, (234), 5 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 234 [2023-11-29 05:18:49,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:18:49,761 INFO L225 Difference]: With dead ends: 149095 [2023-11-29 05:18:49,761 INFO L226 Difference]: Without dead ends: 149093 [2023-11-29 05:18:49,775 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-29 05:18:49,776 INFO L413 NwaCegarLoop]: 1467 mSDtfsCounter, 604 mSDsluCounter, 4015 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 604 SdHoareTripleChecker+Valid, 5482 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:18:49,776 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [604 Valid, 5482 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:18:49,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149093 states. [2023-11-29 05:18:50,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149093 to 90849. [2023-11-29 05:18:50,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90849 states, 90848 states have (on average 1.5818510038746036) internal successors, (143708), 90848 states have internal predecessors, (143708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:18:51,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90849 states to 90849 states and 143708 transitions. [2023-11-29 05:18:51,133 INFO L78 Accepts]: Start accepts. Automaton has 90849 states and 143708 transitions. Word has length 234 [2023-11-29 05:18:51,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:18:51,134 INFO L495 AbstractCegarLoop]: Abstraction has 90849 states and 143708 transitions. [2023-11-29 05:18:51,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 46.8) internal successors, (234), 5 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:18:51,134 INFO L276 IsEmpty]: Start isEmpty. Operand 90849 states and 143708 transitions. [2023-11-29 05:18:51,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2023-11-29 05:18:51,145 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:18:51,146 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:18:51,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-29 05:18:51,146 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:18:51,146 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:18:51,147 INFO L85 PathProgramCache]: Analyzing trace with hash 169217009, now seen corresponding path program 1 times [2023-11-29 05:18:51,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:18:51,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145260181] [2023-11-29 05:18:51,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:18:51,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:18:51,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:51,760 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-29 05:18:51,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:18:51,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145260181] [2023-11-29 05:18:51,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145260181] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:18:51,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:18:51,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 05:18:51,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013035350] [2023-11-29 05:18:51,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:18:51,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 05:18:51,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:18:51,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 05:18:51,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-29 05:18:51,764 INFO L87 Difference]: Start difference. First operand 90849 states and 143708 transitions. Second operand has 7 states, 7 states have (on average 38.142857142857146) internal successors, (267), 7 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:18:52,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:18:52,835 INFO L93 Difference]: Finished difference Result 375626 states and 595273 transitions. [2023-11-29 05:18:52,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 05:18:52,836 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 38.142857142857146) internal successors, (267), 7 states have internal predecessors, (267), 0 states have call successors, (0), 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 275 [2023-11-29 05:18:52,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:18:53,143 INFO L225 Difference]: With dead ends: 375626 [2023-11-29 05:18:53,143 INFO L226 Difference]: Without dead ends: 316224 [2023-11-29 05:18:53,189 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-11-29 05:18:53,190 INFO L413 NwaCegarLoop]: 1583 mSDtfsCounter, 2698 mSDsluCounter, 7001 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2698 SdHoareTripleChecker+Valid, 8584 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 05:18:53,190 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2698 Valid, 8584 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 05:18:53,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316224 states. [2023-11-29 05:18:55,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316224 to 158306. [2023-11-29 05:18:55,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158306 states, 158305 states have (on average 1.5790973121505953) internal successors, (249979), 158305 states have internal predecessors, (249979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:18:55,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158306 states to 158306 states and 249979 transitions. [2023-11-29 05:18:55,923 INFO L78 Accepts]: Start accepts. Automaton has 158306 states and 249979 transitions. Word has length 275 [2023-11-29 05:18:55,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:18:55,923 INFO L495 AbstractCegarLoop]: Abstraction has 158306 states and 249979 transitions. [2023-11-29 05:18:55,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 38.142857142857146) internal successors, (267), 7 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:18:55,923 INFO L276 IsEmpty]: Start isEmpty. Operand 158306 states and 249979 transitions. [2023-11-29 05:18:55,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2023-11-29 05:18:55,929 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:18:55,930 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:18:55,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-29 05:18:55,930 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:18:55,930 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:18:55,930 INFO L85 PathProgramCache]: Analyzing trace with hash -145130673, now seen corresponding path program 1 times [2023-11-29 05:18:55,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:18:55,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710714996] [2023-11-29 05:18:55,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:18:55,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:18:55,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:56,543 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-11-29 05:18:56,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:18:56,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710714996] [2023-11-29 05:18:56,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710714996] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:18:56,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:18:56,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 05:18:56,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087936110] [2023-11-29 05:18:56,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:18:56,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 05:18:56,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:18:56,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 05:18:56,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-29 05:18:56,546 INFO L87 Difference]: Start difference. First operand 158306 states and 249979 transitions. Second operand has 7 states, 7 states have (on average 37.142857142857146) internal successors, (260), 7 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:18:57,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:18:57,898 INFO L93 Difference]: Finished difference Result 425757 states and 674510 transitions. [2023-11-29 05:18:57,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 05:18:57,898 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 37.142857142857146) internal successors, (260), 7 states have internal predecessors, (260), 0 states have call successors, (0), 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 275 [2023-11-29 05:18:57,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:18:58,310 INFO L225 Difference]: With dead ends: 425757 [2023-11-29 05:18:58,310 INFO L226 Difference]: Without dead ends: 366355 [2023-11-29 05:18:58,370 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-11-29 05:18:58,371 INFO L413 NwaCegarLoop]: 1577 mSDtfsCounter, 2872 mSDsluCounter, 6948 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2872 SdHoareTripleChecker+Valid, 8525 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 05:18:58,371 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2872 Valid, 8525 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 05:18:58,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366355 states. [2023-11-29 05:19:01,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366355 to 240346. [2023-11-29 05:19:01,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240346 states, 240345 states have (on average 1.5787846637125797) internal successors, (379453), 240345 states have internal predecessors, (379453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:19:02,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240346 states to 240346 states and 379453 transitions. [2023-11-29 05:19:02,208 INFO L78 Accepts]: Start accepts. Automaton has 240346 states and 379453 transitions. Word has length 275 [2023-11-29 05:19:02,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:19:02,209 INFO L495 AbstractCegarLoop]: Abstraction has 240346 states and 379453 transitions. [2023-11-29 05:19:02,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 37.142857142857146) internal successors, (260), 7 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:19:02,209 INFO L276 IsEmpty]: Start isEmpty. Operand 240346 states and 379453 transitions. [2023-11-29 05:19:02,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2023-11-29 05:19:02,216 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:19:02,216 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:19:02,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-29 05:19:02,216 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:19:02,216 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:19:02,217 INFO L85 PathProgramCache]: Analyzing trace with hash -2028660792, now seen corresponding path program 1 times [2023-11-29 05:19:02,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:19:02,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048094003] [2023-11-29 05:19:02,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:19:02,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:19:02,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:02,989 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-29 05:19:02,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:19:02,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048094003] [2023-11-29 05:19:02,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048094003] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:19:02,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:19:02,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 05:19:02,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257119828] [2023-11-29 05:19:02,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:19:02,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 05:19:02,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:19:02,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 05:19:02,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-29 05:19:02,992 INFO L87 Difference]: Start difference. First operand 240346 states and 379453 transitions. Second operand has 7 states, 7 states have (on average 37.142857142857146) internal successors, (260), 7 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:19:04,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:19:04,515 INFO L93 Difference]: Finished difference Result 458370 states and 726146 transitions. [2023-11-29 05:19:04,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 05:19:04,515 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 37.142857142857146) internal successors, (260), 7 states have internal predecessors, (260), 0 states have call successors, (0), 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 275 [2023-11-29 05:19:04,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:19:05,077 INFO L225 Difference]: With dead ends: 458370 [2023-11-29 05:19:05,077 INFO L226 Difference]: Without dead ends: 398968 [2023-11-29 05:19:05,160 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-11-29 05:19:05,161 INFO L413 NwaCegarLoop]: 1585 mSDtfsCounter, 2647 mSDsluCounter, 6093 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2647 SdHoareTripleChecker+Valid, 7678 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 05:19:05,161 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2647 Valid, 7678 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 05:19:05,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398968 states. [2023-11-29 05:19:08,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398968 to 292497. [2023-11-29 05:19:08,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292497 states, 292496 states have (on average 1.5792352715934577) internal successors, (461920), 292496 states have internal predecessors, (461920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:19:09,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292497 states to 292497 states and 461920 transitions. [2023-11-29 05:19:09,160 INFO L78 Accepts]: Start accepts. Automaton has 292497 states and 461920 transitions. Word has length 275 [2023-11-29 05:19:09,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:19:09,160 INFO L495 AbstractCegarLoop]: Abstraction has 292497 states and 461920 transitions. [2023-11-29 05:19:09,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 37.142857142857146) internal successors, (260), 7 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:19:09,160 INFO L276 IsEmpty]: Start isEmpty. Operand 292497 states and 461920 transitions. [2023-11-29 05:19:09,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2023-11-29 05:19:09,167 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:19:09,167 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:19:09,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-29 05:19:09,167 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:19:09,168 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:19:09,168 INFO L85 PathProgramCache]: Analyzing trace with hash -104164614, now seen corresponding path program 1 times [2023-11-29 05:19:09,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:19:09,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131132621] [2023-11-29 05:19:09,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:19:09,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:19:09,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:09,401 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-29 05:19:09,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:19:09,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131132621] [2023-11-29 05:19:09,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131132621] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:19:09,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:19:09,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 05:19:09,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761373822] [2023-11-29 05:19:09,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:19:09,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 05:19:09,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:19:09,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 05:19:09,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-29 05:19:09,404 INFO L87 Difference]: Start difference. First operand 292497 states and 461920 transitions. Second operand has 7 states, 7 states have (on average 38.142857142857146) internal successors, (267), 7 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:19:11,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:19:11,238 INFO L93 Difference]: Finished difference Result 505969 states and 801559 transitions. [2023-11-29 05:19:11,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 05:19:11,239 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 38.142857142857146) internal successors, (267), 7 states have internal predecessors, (267), 0 states have call successors, (0), 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 275 [2023-11-29 05:19:11,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:19:12,233 INFO L225 Difference]: With dead ends: 505969 [2023-11-29 05:19:12,233 INFO L226 Difference]: Without dead ends: 446567 [2023-11-29 05:19:12,298 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-11-29 05:19:12,299 INFO L413 NwaCegarLoop]: 1601 mSDtfsCounter, 2460 mSDsluCounter, 6455 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2460 SdHoareTripleChecker+Valid, 8056 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 05:19:12,299 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2460 Valid, 8056 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 05:19:12,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 446567 states. [2023-11-29 05:19:15,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 446567 to 344648. [2023-11-29 05:19:16,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 344648 states, 344647 states have (on average 1.579549510078428) internal successors, (544387), 344647 states have internal predecessors, (544387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:19:16,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344648 states to 344648 states and 544387 transitions. [2023-11-29 05:19:16,912 INFO L78 Accepts]: Start accepts. Automaton has 344648 states and 544387 transitions. Word has length 275 [2023-11-29 05:19:16,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:19:16,913 INFO L495 AbstractCegarLoop]: Abstraction has 344648 states and 544387 transitions. [2023-11-29 05:19:16,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 38.142857142857146) internal successors, (267), 7 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:19:16,913 INFO L276 IsEmpty]: Start isEmpty. Operand 344648 states and 544387 transitions. [2023-11-29 05:19:16,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2023-11-29 05:19:16,921 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:19:16,921 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:19:16,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-29 05:19:16,921 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:19:16,922 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:19:16,922 INFO L85 PathProgramCache]: Analyzing trace with hash -157706228, now seen corresponding path program 1 times [2023-11-29 05:19:16,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:19:16,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438255658] [2023-11-29 05:19:16,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:19:16,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:19:16,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:17,169 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 05:19:17,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:19:17,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438255658] [2023-11-29 05:19:17,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438255658] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:19:17,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:19:17,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 05:19:17,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039661454] [2023-11-29 05:19:17,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:19:17,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 05:19:17,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:19:17,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 05:19:17,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-29 05:19:17,172 INFO L87 Difference]: Start difference. First operand 344648 states and 544387 transitions. Second operand has 7 states, 7 states have (on average 39.142857142857146) internal successors, (274), 7 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:19:18,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:19:18,816 INFO L93 Difference]: Finished difference Result 518050 states and 820555 transitions. [2023-11-29 05:19:18,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 05:19:18,817 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 39.142857142857146) internal successors, (274), 7 states have internal predecessors, (274), 0 states have call successors, (0), 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 275 [2023-11-29 05:19:18,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:19:19,410 INFO L225 Difference]: With dead ends: 518050 [2023-11-29 05:19:19,410 INFO L226 Difference]: Without dead ends: 481490 [2023-11-29 05:19:19,888 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-11-29 05:19:19,888 INFO L413 NwaCegarLoop]: 1589 mSDtfsCounter, 2694 mSDsluCounter, 6559 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2694 SdHoareTripleChecker+Valid, 8148 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 05:19:19,889 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2694 Valid, 8148 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 05:19:20,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 481490 states. [2023-11-29 05:19:23,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 481490 to 380696. [2023-11-29 05:19:23,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380696 states, 380695 states have (on average 1.5799760963500966) internal successors, (601489), 380695 states have internal predecessors, (601489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:19:24,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380696 states to 380696 states and 601489 transitions. [2023-11-29 05:19:24,802 INFO L78 Accepts]: Start accepts. Automaton has 380696 states and 601489 transitions. Word has length 275 [2023-11-29 05:19:24,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:19:24,802 INFO L495 AbstractCegarLoop]: Abstraction has 380696 states and 601489 transitions. [2023-11-29 05:19:24,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 39.142857142857146) internal successors, (274), 7 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:19:24,803 INFO L276 IsEmpty]: Start isEmpty. Operand 380696 states and 601489 transitions. [2023-11-29 05:19:24,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2023-11-29 05:19:24,810 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:19:24,811 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:19:24,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-29 05:19:24,811 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:19:24,811 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:19:24,812 INFO L85 PathProgramCache]: Analyzing trace with hash -744115334, now seen corresponding path program 1 times [2023-11-29 05:19:24,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:19:24,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786044881] [2023-11-29 05:19:24,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:19:24,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:19:24,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:25,132 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:19:25,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:19:25,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786044881] [2023-11-29 05:19:25,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786044881] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:19:25,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:19:25,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:19:25,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479964836] [2023-11-29 05:19:25,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:19:25,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:19:25,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:19:25,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:19:25,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:19:25,134 INFO L87 Difference]: Start difference. First operand 380696 states and 601489 transitions. Second operand has 3 states, 3 states have (on average 92.0) internal successors, (276), 3 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:19:26,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:19:26,945 INFO L93 Difference]: Finished difference Result 710858 states and 1124459 transitions. [2023-11-29 05:19:26,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:19:26,946 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 92.0) internal successors, (276), 3 states have internal predecessors, (276), 0 states have call successors, (0), 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 276 [2023-11-29 05:19:26,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:19:27,721 INFO L225 Difference]: With dead ends: 710858 [2023-11-29 05:19:27,721 INFO L226 Difference]: Without dead ends: 330798 [2023-11-29 05:19:27,810 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 05:19:27,810 INFO L413 NwaCegarLoop]: 1371 mSDtfsCounter, 233 mSDsluCounter, 1250 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 2621 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:19:27,811 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [233 Valid, 2621 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:19:27,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330798 states. [2023-11-29 05:19:30,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330798 to 330790. [2023-11-29 05:19:31,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 330790 states, 330789 states have (on average 1.5797804642838789) internal successors, (522574), 330789 states have internal predecessors, (522574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:19:31,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330790 states to 330790 states and 522574 transitions. [2023-11-29 05:19:31,744 INFO L78 Accepts]: Start accepts. Automaton has 330790 states and 522574 transitions. Word has length 276 [2023-11-29 05:19:31,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:19:31,744 INFO L495 AbstractCegarLoop]: Abstraction has 330790 states and 522574 transitions. [2023-11-29 05:19:31,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 92.0) internal successors, (276), 3 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:19:31,745 INFO L276 IsEmpty]: Start isEmpty. Operand 330790 states and 522574 transitions. [2023-11-29 05:19:31,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2023-11-29 05:19:31,751 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:19:31,751 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:19:31,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-29 05:19:31,751 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:19:31,751 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:19:31,752 INFO L85 PathProgramCache]: Analyzing trace with hash -22213431, now seen corresponding path program 1 times [2023-11-29 05:19:31,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:19:31,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110566552] [2023-11-29 05:19:31,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:19:31,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:19:31,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:31,982 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:19:31,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:19:31,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110566552] [2023-11-29 05:19:31,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1110566552] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:19:31,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:19:31,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:19:31,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782821113] [2023-11-29 05:19:31,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:19:31,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:19:31,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:19:31,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:19:31,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:19:31,985 INFO L87 Difference]: Start difference. First operand 330790 states and 522574 transitions. Second operand has 3 states, 3 states have (on average 92.0) internal successors, (276), 3 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:19:33,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:19:33,397 INFO L93 Difference]: Finished difference Result 448426 states and 708983 transitions. [2023-11-29 05:19:33,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:19:33,397 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 92.0) internal successors, (276), 3 states have internal predecessors, (276), 0 states have call successors, (0), 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 276 [2023-11-29 05:19:33,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:19:33,516 INFO L225 Difference]: With dead ends: 448426 [2023-11-29 05:19:33,516 INFO L226 Difference]: Without dead ends: 118305 [2023-11-29 05:19:33,593 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 05:19:33,594 INFO L413 NwaCegarLoop]: 1363 mSDtfsCounter, 196 mSDsluCounter, 1228 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 2591 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:19:33,594 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [196 Valid, 2591 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:19:33,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118305 states. [2023-11-29 05:19:34,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118305 to 118170. [2023-11-29 05:19:34,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118170 states, 118169 states have (on average 1.5807699142753175) internal successors, (186798), 118169 states have internal predecessors, (186798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:19:35,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118170 states to 118170 states and 186798 transitions. [2023-11-29 05:19:35,068 INFO L78 Accepts]: Start accepts. Automaton has 118170 states and 186798 transitions. Word has length 276 [2023-11-29 05:19:35,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:19:35,068 INFO L495 AbstractCegarLoop]: Abstraction has 118170 states and 186798 transitions. [2023-11-29 05:19:35,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 92.0) internal successors, (276), 3 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:19:35,069 INFO L276 IsEmpty]: Start isEmpty. Operand 118170 states and 186798 transitions. [2023-11-29 05:19:35,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2023-11-29 05:19:35,073 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:19:35,073 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:19:35,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-29 05:19:35,073 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:19:35,074 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:19:35,074 INFO L85 PathProgramCache]: Analyzing trace with hash -1420469334, now seen corresponding path program 1 times [2023-11-29 05:19:35,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:19:35,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126971722] [2023-11-29 05:19:35,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:19:35,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:19:35,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:35,277 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:19:35,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:19:35,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126971722] [2023-11-29 05:19:35,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126971722] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:19:35,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:19:35,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:19:35,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810877797] [2023-11-29 05:19:35,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:19:35,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:19:35,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:19:35,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:19:35,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:19:35,280 INFO L87 Difference]: Start difference. First operand 118170 states and 186798 transitions. Second operand has 3 states, 3 states have (on average 92.0) internal successors, (276), 3 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:19:35,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:19:35,987 INFO L93 Difference]: Finished difference Result 160307 states and 253691 transitions. [2023-11-29 05:19:35,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:19:35,988 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 92.0) internal successors, (276), 3 states have internal predecessors, (276), 0 states have call successors, (0), 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 276 [2023-11-29 05:19:35,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:19:36,024 INFO L225 Difference]: With dead ends: 160307 [2023-11-29 05:19:36,024 INFO L226 Difference]: Without dead ends: 42806 [2023-11-29 05:19:36,059 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:19:36,059 INFO L413 NwaCegarLoop]: 1355 mSDtfsCounter, 159 mSDsluCounter, 1206 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 2561 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:19:36,060 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 2561 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:19:36,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42806 states. [2023-11-29 05:19:36,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42806 to 42016. [2023-11-29 05:19:36,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42016 states, 42015 states have (on average 1.5830536713078662) internal successors, (66512), 42015 states have internal predecessors, (66512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:19:36,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42016 states to 42016 states and 66512 transitions. [2023-11-29 05:19:36,416 INFO L78 Accepts]: Start accepts. Automaton has 42016 states and 66512 transitions. Word has length 276 [2023-11-29 05:19:36,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:19:36,416 INFO L495 AbstractCegarLoop]: Abstraction has 42016 states and 66512 transitions. [2023-11-29 05:19:36,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 92.0) internal successors, (276), 3 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:19:36,417 INFO L276 IsEmpty]: Start isEmpty. Operand 42016 states and 66512 transitions. [2023-11-29 05:19:36,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2023-11-29 05:19:36,420 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:19:36,420 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:19:36,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-29 05:19:36,420 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:19:36,420 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:19:36,421 INFO L85 PathProgramCache]: Analyzing trace with hash 1537275033, now seen corresponding path program 1 times [2023-11-29 05:19:36,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:19:36,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018810145] [2023-11-29 05:19:36,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:19:36,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:19:36,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:37,330 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 05:19:37,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:19:37,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018810145] [2023-11-29 05:19:37,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018810145] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:19:37,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:19:37,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 05:19:37,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075199357] [2023-11-29 05:19:37,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:19:37,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:19:37,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:19:37,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:19:37,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 05:19:37,333 INFO L87 Difference]: Start difference. First operand 42016 states and 66512 transitions. Second operand has 4 states, 4 states have (on average 68.75) internal successors, (275), 4 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:19:37,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:19:37,571 INFO L93 Difference]: Finished difference Result 112039 states and 177361 transitions. [2023-11-29 05:19:37,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 05:19:37,571 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 68.75) internal successors, (275), 4 states have internal predecessors, (275), 0 states have call successors, (0), 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 276 [2023-11-29 05:19:37,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:19:37,638 INFO L225 Difference]: With dead ends: 112039 [2023-11-29 05:19:37,638 INFO L226 Difference]: Without dead ends: 83187 [2023-11-29 05:19:37,660 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 05:19:37,660 INFO L413 NwaCegarLoop]: 1350 mSDtfsCounter, 1005 mSDsluCounter, 2416 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1005 SdHoareTripleChecker+Valid, 3766 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:19:37,660 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1005 Valid, 3766 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:19:37,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83187 states. [2023-11-29 05:19:38,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83187 to 70730. [2023-11-29 05:19:38,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70730 states, 70729 states have (on average 1.5818688232549591) internal successors, (111884), 70729 states have internal predecessors, (111884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:19:38,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70730 states to 70730 states and 111884 transitions. [2023-11-29 05:19:38,531 INFO L78 Accepts]: Start accepts. Automaton has 70730 states and 111884 transitions. Word has length 276 [2023-11-29 05:19:38,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:19:38,531 INFO L495 AbstractCegarLoop]: Abstraction has 70730 states and 111884 transitions. [2023-11-29 05:19:38,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 68.75) internal successors, (275), 4 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:19:38,532 INFO L276 IsEmpty]: Start isEmpty. Operand 70730 states and 111884 transitions. [2023-11-29 05:19:38,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2023-11-29 05:19:38,534 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:19:38,534 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:19:38,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-11-29 05:19:38,535 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:19:38,535 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:19:38,535 INFO L85 PathProgramCache]: Analyzing trace with hash 838120163, now seen corresponding path program 1 times [2023-11-29 05:19:38,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:19:38,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867975804] [2023-11-29 05:19:38,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:19:38,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:19:38,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:38,989 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 05:19:38,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:19:38,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867975804] [2023-11-29 05:19:38,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867975804] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:19:38,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:19:38,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 05:19:38,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670463341] [2023-11-29 05:19:38,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:19:38,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:19:38,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:19:38,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:19:38,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 05:19:38,992 INFO L87 Difference]: Start difference. First operand 70730 states and 111884 transitions. Second operand has 4 states, 4 states have (on average 68.75) internal successors, (275), 4 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:19:39,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:19:39,371 INFO L93 Difference]: Finished difference Result 189155 states and 299329 transitions. [2023-11-29 05:19:39,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 05:19:39,372 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 68.75) internal successors, (275), 4 states have internal predecessors, (275), 0 states have call successors, (0), 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 276 [2023-11-29 05:19:39,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:19:39,498 INFO L225 Difference]: With dead ends: 189155 [2023-11-29 05:19:39,498 INFO L226 Difference]: Without dead ends: 140347 [2023-11-29 05:19:39,535 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 05:19:39,536 INFO L413 NwaCegarLoop]: 1309 mSDtfsCounter, 1016 mSDsluCounter, 2420 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1016 SdHoareTripleChecker+Valid, 3729 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:19:39,536 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1016 Valid, 3729 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:19:39,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140347 states. [2023-11-29 05:19:41,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140347 to 119304. [2023-11-29 05:19:41,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119304 states, 119303 states have (on average 1.581049931686546) internal successors, (188624), 119303 states have internal predecessors, (188624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:19:41,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119304 states to 119304 states and 188624 transitions. [2023-11-29 05:19:41,182 INFO L78 Accepts]: Start accepts. Automaton has 119304 states and 188624 transitions. Word has length 276 [2023-11-29 05:19:41,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:19:41,182 INFO L495 AbstractCegarLoop]: Abstraction has 119304 states and 188624 transitions. [2023-11-29 05:19:41,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 68.75) internal successors, (275), 4 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:19:41,182 INFO L276 IsEmpty]: Start isEmpty. Operand 119304 states and 188624 transitions. [2023-11-29 05:19:41,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2023-11-29 05:19:41,185 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:19:41,185 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:19:41,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-11-29 05:19:41,185 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:19:41,185 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:19:41,186 INFO L85 PathProgramCache]: Analyzing trace with hash -1790639271, now seen corresponding path program 1 times [2023-11-29 05:19:41,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:19:41,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507871360] [2023-11-29 05:19:41,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:19:41,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:19:41,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:41,620 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 05:19:41,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:19:41,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507871360] [2023-11-29 05:19:41,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507871360] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:19:41,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:19:41,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 05:19:41,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865141341] [2023-11-29 05:19:41,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:19:41,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:19:41,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:19:41,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:19:41,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 05:19:41,623 INFO L87 Difference]: Start difference. First operand 119304 states and 188624 transitions. Second operand has 4 states, 4 states have (on average 68.75) internal successors, (275), 4 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:19:42,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:19:42,674 INFO L93 Difference]: Finished difference Result 406525 states and 640817 transitions. [2023-11-29 05:19:42,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 05:19:42,675 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 68.75) internal successors, (275), 4 states have internal predecessors, (275), 0 states have call successors, (0), 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 276 [2023-11-29 05:19:42,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:19:42,937 INFO L225 Difference]: With dead ends: 406525 [2023-11-29 05:19:42,937 INFO L226 Difference]: Without dead ends: 287890 [2023-11-29 05:19:42,981 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 05:19:42,982 INFO L413 NwaCegarLoop]: 1367 mSDtfsCounter, 950 mSDsluCounter, 2418 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 950 SdHoareTripleChecker+Valid, 3785 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:19:42,982 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [950 Valid, 3785 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:19:43,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287890 states. [2023-11-29 05:19:45,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287890 to 237377. [2023-11-29 05:19:45,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237377 states, 237376 states have (on average 1.5773203693717983) internal successors, (374418), 237376 states have internal predecessors, (374418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:19:45,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237377 states to 237377 states and 374418 transitions. [2023-11-29 05:19:45,669 INFO L78 Accepts]: Start accepts. Automaton has 237377 states and 374418 transitions. Word has length 276 [2023-11-29 05:19:45,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:19:45,669 INFO L495 AbstractCegarLoop]: Abstraction has 237377 states and 374418 transitions. [2023-11-29 05:19:45,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 68.75) internal successors, (275), 4 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:19:45,670 INFO L276 IsEmpty]: Start isEmpty. Operand 237377 states and 374418 transitions. [2023-11-29 05:19:45,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2023-11-29 05:19:45,672 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:19:45,672 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-29 05:19:45,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-11-29 05:19:45,673 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:19:45,673 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:19:45,673 INFO L85 PathProgramCache]: Analyzing trace with hash -1508760327, now seen corresponding path program 1 times [2023-11-29 05:19:45,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:19:45,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463178470] [2023-11-29 05:19:45,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:19:45,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:19:45,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:45,802 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 05:19:45,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:19:45,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463178470] [2023-11-29 05:19:45,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463178470] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:19:45,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:19:45,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:19:45,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839489706] [2023-11-29 05:19:45,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:19:45,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:19:45,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:19:45,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:19:45,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:19:45,805 INFO L87 Difference]: Start difference. First operand 237377 states and 374418 transitions. Second operand has 3 states, 3 states have (on average 91.66666666666667) internal successors, (275), 3 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:19:47,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:19:47,351 INFO L93 Difference]: Finished difference Result 517317 states and 816268 transitions. [2023-11-29 05:19:47,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:19:47,352 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 91.66666666666667) internal successors, (275), 3 states have internal predecessors, (275), 0 states have call successors, (0), 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 276 [2023-11-29 05:19:47,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:19:47,769 INFO L225 Difference]: With dead ends: 517317 [2023-11-29 05:19:47,770 INFO L226 Difference]: Without dead ends: 387082 [2023-11-29 05:19:48,348 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 05:19:48,362 INFO L413 NwaCegarLoop]: 1254 mSDtfsCounter, 252 mSDsluCounter, 1227 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 252 SdHoareTripleChecker+Valid, 2481 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:19:48,362 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [252 Valid, 2481 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:19:48,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387082 states. [2023-11-29 05:19:51,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387082 to 386570. [2023-11-29 05:19:51,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386570 states, 386569 states have (on average 1.575907535265373) internal successors, (609197), 386569 states have internal predecessors, (609197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:19:52,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386570 states to 386570 states and 609197 transitions. [2023-11-29 05:19:52,367 INFO L78 Accepts]: Start accepts. Automaton has 386570 states and 609197 transitions. Word has length 276 [2023-11-29 05:19:52,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:19:52,367 INFO L495 AbstractCegarLoop]: Abstraction has 386570 states and 609197 transitions. [2023-11-29 05:19:52,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 91.66666666666667) internal successors, (275), 3 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:19:52,367 INFO L276 IsEmpty]: Start isEmpty. Operand 386570 states and 609197 transitions. [2023-11-29 05:19:52,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2023-11-29 05:19:52,370 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:19:52,370 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-29 05:19:52,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-11-29 05:19:52,371 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:19:52,371 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:19:52,371 INFO L85 PathProgramCache]: Analyzing trace with hash -568039263, now seen corresponding path program 1 times [2023-11-29 05:19:52,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:19:52,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768160289] [2023-11-29 05:19:52,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:19:52,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:19:52,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:52,580 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 05:19:52,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:19:52,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768160289] [2023-11-29 05:19:52,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768160289] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:19:52,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:19:52,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 05:19:52,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263745377] [2023-11-29 05:19:52,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:19:52,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:19:52,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:19:52,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:19:52,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 05:19:52,583 INFO L87 Difference]: Start difference. First operand 386570 states and 609197 transitions. Second operand has 4 states, 4 states have (on average 68.75) internal successors, (275), 4 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:19:54,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:19:54,236 INFO L93 Difference]: Finished difference Result 557066 states and 878960 transitions. [2023-11-29 05:19:54,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 05:19:54,237 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 68.75) internal successors, (275), 4 states have internal predecessors, (275), 0 states have call successors, (0), 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 276 [2023-11-29 05:19:54,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:19:55,268 INFO L225 Difference]: With dead ends: 557066 [2023-11-29 05:19:55,269 INFO L226 Difference]: Without dead ends: 471524 [2023-11-29 05:19:55,380 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 05:19:55,380 INFO L413 NwaCegarLoop]: 1563 mSDtfsCounter, 551 mSDsluCounter, 1575 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 551 SdHoareTripleChecker+Valid, 3138 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 05:19:55,381 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [551 Valid, 3138 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 05:19:55,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471524 states.