./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pals_lcr.3_overflow.ufo.UNBOUNDED.pals+Problem12_label09.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bd1c8e1-fb3f-41e3-b7d6-2805e6282054/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bd1c8e1-fb3f-41e3-b7d6-2805e6282054/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_7bd1c8e1-fb3f-41e3-b7d6-2805e6282054/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bd1c8e1-fb3f-41e3-b7d6-2805e6282054/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pals_lcr.3_overflow.ufo.UNBOUNDED.pals+Problem12_label09.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bd1c8e1-fb3f-41e3-b7d6-2805e6282054/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_7bd1c8e1-fb3f-41e3-b7d6-2805e6282054/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 7ea381ec8ed14f66c767c1e3d74aca72e3c49fc21baf435ac33ef40352270e74 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 01:35:51,183 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 01:35:51,245 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bd1c8e1-fb3f-41e3-b7d6-2805e6282054/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 01:35:51,250 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 01:35:51,250 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 01:35:51,271 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 01:35:51,272 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 01:35:51,273 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 01:35:51,273 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 01:35:51,274 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 01:35:51,274 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 01:35:51,275 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 01:35:51,276 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 01:35:51,276 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 01:35:51,277 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 01:35:51,277 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 01:35:51,278 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 01:35:51,278 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 01:35:51,279 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 01:35:51,279 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 01:35:51,279 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 01:35:51,284 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 01:35:51,284 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 01:35:51,285 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 01:35:51,285 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 01:35:51,286 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 01:35:51,286 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 01:35:51,286 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 01:35:51,287 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 01:35:51,287 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 01:35:51,287 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 01:35:51,288 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 01:35:51,288 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 01:35:51,288 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 01:35:51,288 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 01:35:51,289 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 01:35:51,289 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 01:35:51,289 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 01:35:51,289 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 01:35:51,289 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 01:35:51,289 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 01:35:51,290 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 01:35:51,290 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_7bd1c8e1-fb3f-41e3-b7d6-2805e6282054/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bd1c8e1-fb3f-41e3-b7d6-2805e6282054/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7ea381ec8ed14f66c767c1e3d74aca72e3c49fc21baf435ac33ef40352270e74 [2023-11-29 01:35:51,533 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 01:35:51,554 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 01:35:51,557 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 01:35:51,558 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 01:35:51,558 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 01:35:51,560 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bd1c8e1-fb3f-41e3-b7d6-2805e6282054/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/combinations/pals_lcr.3_overflow.ufo.UNBOUNDED.pals+Problem12_label09.c [2023-11-29 01:35:54,324 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 01:35:54,727 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 01:35:54,728 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bd1c8e1-fb3f-41e3-b7d6-2805e6282054/sv-benchmarks/c/combinations/pals_lcr.3_overflow.ufo.UNBOUNDED.pals+Problem12_label09.c [2023-11-29 01:35:54,758 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bd1c8e1-fb3f-41e3-b7d6-2805e6282054/bin/uautomizer-verify-BQ2R08f2Ya/data/40ba82f07/7dbb2724ffdf4853915406a303ff89ee/FLAG58dc7a89f [2023-11-29 01:35:54,773 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bd1c8e1-fb3f-41e3-b7d6-2805e6282054/bin/uautomizer-verify-BQ2R08f2Ya/data/40ba82f07/7dbb2724ffdf4853915406a303ff89ee [2023-11-29 01:35:54,775 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 01:35:54,777 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 01:35:54,778 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 01:35:54,778 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 01:35:54,783 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 01:35:54,784 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 01:35:54" (1/1) ... [2023-11-29 01:35:54,785 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f6008eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:35:54, skipping insertion in model container [2023-11-29 01:35:54,785 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 01:35:54" (1/1) ... [2023-11-29 01:35:54,926 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 01:35:55,232 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_7bd1c8e1-fb3f-41e3-b7d6-2805e6282054/sv-benchmarks/c/combinations/pals_lcr.3_overflow.ufo.UNBOUNDED.pals+Problem12_label09.c[6524,6537] [2023-11-29 01:35:55,293 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_7bd1c8e1-fb3f-41e3-b7d6-2805e6282054/sv-benchmarks/c/combinations/pals_lcr.3_overflow.ufo.UNBOUNDED.pals+Problem12_label09.c[14272,14285] [2023-11-29 01:35:56,071 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 01:35:56,081 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 01:35:56,108 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_7bd1c8e1-fb3f-41e3-b7d6-2805e6282054/sv-benchmarks/c/combinations/pals_lcr.3_overflow.ufo.UNBOUNDED.pals+Problem12_label09.c[6524,6537] [2023-11-29 01:35:56,126 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_7bd1c8e1-fb3f-41e3-b7d6-2805e6282054/sv-benchmarks/c/combinations/pals_lcr.3_overflow.ufo.UNBOUNDED.pals+Problem12_label09.c[14272,14285] [2023-11-29 01:35:56,672 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 01:35:56,701 INFO L206 MainTranslator]: Completed translation [2023-11-29 01:35:56,701 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:35:56 WrapperNode [2023-11-29 01:35:56,701 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 01:35:56,702 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 01:35:56,702 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 01:35:56,703 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 01:35:56,710 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:35:56" (1/1) ... [2023-11-29 01:35:56,752 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:35:56" (1/1) ... [2023-11-29 01:35:57,032 INFO L138 Inliner]: procedures = 35, calls = 20, calls flagged for inlining = 15, calls inlined = 15, statements flattened = 4977 [2023-11-29 01:35:57,033 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 01:35:57,034 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 01:35:57,034 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 01:35:57,034 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 01:35:57,044 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:35:56" (1/1) ... [2023-11-29 01:35:57,044 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:35:56" (1/1) ... [2023-11-29 01:35:57,071 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:35:56" (1/1) ... [2023-11-29 01:35:57,206 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-11-29 01:35:57,207 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:35:56" (1/1) ... [2023-11-29 01:35:57,207 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:35:56" (1/1) ... [2023-11-29 01:35:57,339 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:35:56" (1/1) ... [2023-11-29 01:35:57,367 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:35:56" (1/1) ... [2023-11-29 01:35:57,382 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:35:56" (1/1) ... [2023-11-29 01:35:57,394 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:35:56" (1/1) ... [2023-11-29 01:35:57,450 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 01:35:57,451 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 01:35:57,451 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 01:35:57,451 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 01:35:57,452 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:35:56" (1/1) ... [2023-11-29 01:35:57,456 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 01:35:57,465 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bd1c8e1-fb3f-41e3-b7d6-2805e6282054/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:35:57,478 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bd1c8e1-fb3f-41e3-b7d6-2805e6282054/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 01:35:57,481 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bd1c8e1-fb3f-41e3-b7d6-2805e6282054/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 01:35:57,510 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 01:35:57,510 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 01:35:57,510 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 01:35:57,510 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 01:35:57,602 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 01:35:57,603 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 01:36:01,989 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 01:36:02,059 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 01:36:02,059 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-29 01:36:02,060 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 01:36:02 BoogieIcfgContainer [2023-11-29 01:36:02,061 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 01:36:02,063 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 01:36:02,063 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 01:36:02,066 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 01:36:02,067 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 01:35:54" (1/3) ... [2023-11-29 01:36:02,067 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c5e769d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 01:36:02, skipping insertion in model container [2023-11-29 01:36:02,068 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:35:56" (2/3) ... [2023-11-29 01:36:02,068 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c5e769d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 01:36:02, skipping insertion in model container [2023-11-29 01:36:02,068 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 01:36:02" (3/3) ... [2023-11-29 01:36:02,069 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.3_overflow.ufo.UNBOUNDED.pals+Problem12_label09.c [2023-11-29 01:36:02,088 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 01:36:02,088 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-29 01:36:02,157 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 01:36:02,163 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;@3cc3fac9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 01:36:02,164 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-29 01:36:02,172 INFO L276 IsEmpty]: Start isEmpty. Operand has 807 states, 804 states have (on average 1.9800995024875623) internal successors, (1592), 806 states have internal predecessors, (1592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:36:02,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-29 01:36:02,180 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:36:02,181 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:36:02,182 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:36:02,187 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:36:02,187 INFO L85 PathProgramCache]: Analyzing trace with hash -1100216757, now seen corresponding path program 1 times [2023-11-29 01:36:02,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:36:02,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316570321] [2023-11-29 01:36:02,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:36:02,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:36:02,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:36:02,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:36:02,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:36:02,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316570321] [2023-11-29 01:36:02,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316570321] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:36:02,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:36:02,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 01:36:02,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320211873] [2023-11-29 01:36:02,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:36:02,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-29 01:36:02,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:36:02,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-29 01:36:02,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 01:36:02,408 INFO L87 Difference]: Start difference. First operand has 807 states, 804 states have (on average 1.9800995024875623) internal successors, (1592), 806 states have internal predecessors, (1592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:36:02,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:36:02,489 INFO L93 Difference]: Finished difference Result 1593 states and 3145 transitions. [2023-11-29 01:36:02,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 01:36:02,491 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 0 states have call successors, (0), 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 17 [2023-11-29 01:36:02,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:36:02,509 INFO L225 Difference]: With dead ends: 1593 [2023-11-29 01:36:02,509 INFO L226 Difference]: Without dead ends: 803 [2023-11-29 01:36:02,515 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 01:36:02,518 INFO L413 NwaCegarLoop]: 1520 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1520 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:36:02,519 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1520 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:36:02,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 803 states. [2023-11-29 01:36:02,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 803 to 803. [2023-11-29 01:36:02,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 803 states, 801 states have (on average 1.898876404494382) internal successors, (1521), 802 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:36:02,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 1521 transitions. [2023-11-29 01:36:02,589 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 1521 transitions. Word has length 17 [2023-11-29 01:36:02,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:36:02,589 INFO L495 AbstractCegarLoop]: Abstraction has 803 states and 1521 transitions. [2023-11-29 01:36:02,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:36:02,589 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 1521 transitions. [2023-11-29 01:36:02,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-29 01:36:02,590 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:36:02,590 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:36:02,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 01:36:02,591 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:36:02,591 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:36:02,591 INFO L85 PathProgramCache]: Analyzing trace with hash -1687022771, now seen corresponding path program 1 times [2023-11-29 01:36:02,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:36:02,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897540100] [2023-11-29 01:36:02,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:36:02,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:36:02,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:36:02,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:36:02,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:36:02,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897540100] [2023-11-29 01:36:02,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897540100] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:36:02,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:36:02,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 01:36:02,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911156591] [2023-11-29 01:36:02,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:36:02,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:36:02,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:36:02,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:36:02,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:36:02,851 INFO L87 Difference]: Start difference. First operand 803 states and 1521 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:36:02,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:36:02,940 INFO L93 Difference]: Finished difference Result 835 states and 1570 transitions. [2023-11-29 01:36:02,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:36:02,941 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 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 17 [2023-11-29 01:36:02,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:36:02,946 INFO L225 Difference]: With dead ends: 835 [2023-11-29 01:36:02,947 INFO L226 Difference]: Without dead ends: 803 [2023-11-29 01:36:02,947 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:36:02,949 INFO L413 NwaCegarLoop]: 1518 mSDtfsCounter, 0 mSDsluCounter, 3016 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4534 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:36:02,949 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4534 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:36:02,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 803 states. [2023-11-29 01:36:02,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 803 to 803. [2023-11-29 01:36:02,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 803 states, 801 states have (on average 1.8789013732833957) internal successors, (1505), 802 states have internal predecessors, (1505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:36:02,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 1505 transitions. [2023-11-29 01:36:02,974 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 1505 transitions. Word has length 17 [2023-11-29 01:36:02,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:36:02,974 INFO L495 AbstractCegarLoop]: Abstraction has 803 states and 1505 transitions. [2023-11-29 01:36:02,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:36:02,975 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 1505 transitions. [2023-11-29 01:36:02,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-11-29 01:36:02,976 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:36:02,976 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] [2023-11-29 01:36:02,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 01:36:02,977 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:36:02,977 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:36:02,977 INFO L85 PathProgramCache]: Analyzing trace with hash 613121839, now seen corresponding path program 1 times [2023-11-29 01:36:02,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:36:02,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79830524] [2023-11-29 01:36:02,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:36:02,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:36:02,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:36:03,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:36:03,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:36:03,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79830524] [2023-11-29 01:36:03,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79830524] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:36:03,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:36:03,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 01:36:03,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23762642] [2023-11-29 01:36:03,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:36:03,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 01:36:03,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:36:03,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 01:36:03,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 01:36:03,121 INFO L87 Difference]: Start difference. First operand 803 states and 1505 transitions. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:36:03,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:36:03,266 INFO L93 Difference]: Finished difference Result 977 states and 1781 transitions. [2023-11-29 01:36:03,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 01:36:03,267 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 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 32 [2023-11-29 01:36:03,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:36:03,273 INFO L225 Difference]: With dead ends: 977 [2023-11-29 01:36:03,274 INFO L226 Difference]: Without dead ends: 948 [2023-11-29 01:36:03,274 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-29 01:36:03,276 INFO L413 NwaCegarLoop]: 1498 mSDtfsCounter, 4578 mSDsluCounter, 343 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4578 SdHoareTripleChecker+Valid, 1841 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:36:03,276 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4578 Valid, 1841 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 01:36:03,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 948 states. [2023-11-29 01:36:03,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 948 to 830. [2023-11-29 01:36:03,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 830 states, 828 states have (on average 1.8695652173913044) internal successors, (1548), 829 states have internal predecessors, (1548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:36:03,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 830 states to 830 states and 1548 transitions. [2023-11-29 01:36:03,303 INFO L78 Accepts]: Start accepts. Automaton has 830 states and 1548 transitions. Word has length 32 [2023-11-29 01:36:03,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:36:03,303 INFO L495 AbstractCegarLoop]: Abstraction has 830 states and 1548 transitions. [2023-11-29 01:36:03,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:36:03,303 INFO L276 IsEmpty]: Start isEmpty. Operand 830 states and 1548 transitions. [2023-11-29 01:36:03,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-11-29 01:36:03,305 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:36:03,305 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] [2023-11-29 01:36:03,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 01:36:03,306 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:36:03,306 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:36:03,306 INFO L85 PathProgramCache]: Analyzing trace with hash 675954815, now seen corresponding path program 1 times [2023-11-29 01:36:03,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:36:03,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273529628] [2023-11-29 01:36:03,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:36:03,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:36:03,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:36:03,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:36:03,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:36:03,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273529628] [2023-11-29 01:36:03,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273529628] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:36:03,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:36:03,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:36:03,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40715466] [2023-11-29 01:36:03,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:36:03,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:36:03,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:36:03,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:36:03,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:36:03,382 INFO L87 Difference]: Start difference. First operand 830 states and 1548 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:36:03,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:36:03,426 INFO L93 Difference]: Finished difference Result 931 states and 1707 transitions. [2023-11-29 01:36:03,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:36:03,426 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 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 34 [2023-11-29 01:36:03,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:36:03,432 INFO L225 Difference]: With dead ends: 931 [2023-11-29 01:36:03,432 INFO L226 Difference]: Without dead ends: 875 [2023-11-29 01:36:03,433 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:36:03,434 INFO L413 NwaCegarLoop]: 1500 mSDtfsCounter, 1464 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1464 SdHoareTripleChecker+Valid, 1540 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:36:03,435 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1464 Valid, 1540 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:36:03,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 875 states. [2023-11-29 01:36:03,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 875 to 873. [2023-11-29 01:36:03,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 873 states, 871 states have (on average 1.8530424799081515) internal successors, (1614), 872 states have internal predecessors, (1614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:36:03,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 873 states to 873 states and 1614 transitions. [2023-11-29 01:36:03,460 INFO L78 Accepts]: Start accepts. Automaton has 873 states and 1614 transitions. Word has length 34 [2023-11-29 01:36:03,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:36:03,461 INFO L495 AbstractCegarLoop]: Abstraction has 873 states and 1614 transitions. [2023-11-29 01:36:03,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:36:03,461 INFO L276 IsEmpty]: Start isEmpty. Operand 873 states and 1614 transitions. [2023-11-29 01:36:03,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-11-29 01:36:03,463 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:36:03,463 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] [2023-11-29 01:36:03,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 01:36:03,463 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:36:03,464 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:36:03,464 INFO L85 PathProgramCache]: Analyzing trace with hash 678099767, now seen corresponding path program 1 times [2023-11-29 01:36:03,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:36:03,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465115219] [2023-11-29 01:36:03,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:36:03,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:36:03,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:36:03,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:36:03,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:36:03,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465115219] [2023-11-29 01:36:03,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465115219] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:36:03,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:36:03,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 01:36:03,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662370235] [2023-11-29 01:36:03,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:36:03,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 01:36:03,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:36:03,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 01:36:03,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 01:36:03,617 INFO L87 Difference]: Start difference. First operand 873 states and 1614 transitions. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:36:03,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:36:03,709 INFO L93 Difference]: Finished difference Result 974 states and 1770 transitions. [2023-11-29 01:36:03,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 01:36:03,710 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 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 34 [2023-11-29 01:36:03,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:36:03,715 INFO L225 Difference]: With dead ends: 974 [2023-11-29 01:36:03,715 INFO L226 Difference]: Without dead ends: 875 [2023-11-29 01:36:03,716 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-11-29 01:36:03,717 INFO L413 NwaCegarLoop]: 1497 mSDtfsCounter, 1473 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1473 SdHoareTripleChecker+Valid, 1620 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:36:03,718 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1473 Valid, 1620 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:36:03,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 875 states. [2023-11-29 01:36:03,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 875 to 873. [2023-11-29 01:36:03,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 873 states, 871 states have (on average 1.8507462686567164) internal successors, (1612), 872 states have internal predecessors, (1612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:36:03,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 873 states to 873 states and 1612 transitions. [2023-11-29 01:36:03,742 INFO L78 Accepts]: Start accepts. Automaton has 873 states and 1612 transitions. Word has length 34 [2023-11-29 01:36:03,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:36:03,743 INFO L495 AbstractCegarLoop]: Abstraction has 873 states and 1612 transitions. [2023-11-29 01:36:03,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:36:03,743 INFO L276 IsEmpty]: Start isEmpty. Operand 873 states and 1612 transitions. [2023-11-29 01:36:03,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-11-29 01:36:03,744 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:36:03,744 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:36:03,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 01:36:03,745 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:36:03,745 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:36:03,745 INFO L85 PathProgramCache]: Analyzing trace with hash -582127364, now seen corresponding path program 1 times [2023-11-29 01:36:03,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:36:03,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051326692] [2023-11-29 01:36:03,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:36:03,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:36:03,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:36:03,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:36:03,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:36:03,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051326692] [2023-11-29 01:36:03,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051326692] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:36:03,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:36:03,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 01:36:03,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604870433] [2023-11-29 01:36:03,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:36:03,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:36:03,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:36:03,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:36:03,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:36:03,896 INFO L87 Difference]: Start difference. First operand 873 states and 1612 transitions. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:36:03,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:36:03,955 INFO L93 Difference]: Finished difference Result 881 states and 1621 transitions. [2023-11-29 01:36:03,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:36:03,956 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 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 35 [2023-11-29 01:36:03,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:36:03,962 INFO L225 Difference]: With dead ends: 881 [2023-11-29 01:36:03,962 INFO L226 Difference]: Without dead ends: 879 [2023-11-29 01:36:03,962 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:36:03,963 INFO L413 NwaCegarLoop]: 1501 mSDtfsCounter, 1 mSDsluCounter, 2994 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 4495 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:36:03,964 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 4495 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:36:03,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 879 states. [2023-11-29 01:36:03,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 879 to 877. [2023-11-29 01:36:03,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 877 states, 875 states have (on average 1.8457142857142856) internal successors, (1615), 876 states have internal predecessors, (1615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:36:03,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 877 states to 877 states and 1615 transitions. [2023-11-29 01:36:03,989 INFO L78 Accepts]: Start accepts. Automaton has 877 states and 1615 transitions. Word has length 35 [2023-11-29 01:36:03,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:36:03,989 INFO L495 AbstractCegarLoop]: Abstraction has 877 states and 1615 transitions. [2023-11-29 01:36:03,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:36:03,990 INFO L276 IsEmpty]: Start isEmpty. Operand 877 states and 1615 transitions. [2023-11-29 01:36:03,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-11-29 01:36:03,991 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:36:03,991 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] [2023-11-29 01:36:03,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 01:36:03,991 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:36:03,992 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:36:03,992 INFO L85 PathProgramCache]: Analyzing trace with hash 2127458807, now seen corresponding path program 1 times [2023-11-29 01:36:03,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:36:03,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202823045] [2023-11-29 01:36:03,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:36:03,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:36:04,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:36:04,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:36:04,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:36:04,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202823045] [2023-11-29 01:36:04,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202823045] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:36:04,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:36:04,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:36:04,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274147268] [2023-11-29 01:36:04,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:36:04,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:36:04,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:36:04,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:36:04,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:36:04,037 INFO L87 Difference]: Start difference. First operand 877 states and 1615 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:36:04,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:36:04,078 INFO L93 Difference]: Finished difference Result 991 states and 1788 transitions. [2023-11-29 01:36:04,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:36:04,079 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2023-11-29 01:36:04,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:36:04,085 INFO L225 Difference]: With dead ends: 991 [2023-11-29 01:36:04,085 INFO L226 Difference]: Without dead ends: 931 [2023-11-29 01:36:04,086 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:36:04,086 INFO L413 NwaCegarLoop]: 1532 mSDtfsCounter, 1474 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1474 SdHoareTripleChecker+Valid, 1578 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:36:04,087 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1474 Valid, 1578 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:36:04,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 931 states. [2023-11-29 01:36:04,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 931 to 929. [2023-11-29 01:36:04,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 929 states, 927 states have (on average 1.825242718446602) internal successors, (1692), 928 states have internal predecessors, (1692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:36:04,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 929 states to 929 states and 1692 transitions. [2023-11-29 01:36:04,112 INFO L78 Accepts]: Start accepts. Automaton has 929 states and 1692 transitions. Word has length 36 [2023-11-29 01:36:04,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:36:04,113 INFO L495 AbstractCegarLoop]: Abstraction has 929 states and 1692 transitions. [2023-11-29 01:36:04,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:36:04,113 INFO L276 IsEmpty]: Start isEmpty. Operand 929 states and 1692 transitions. [2023-11-29 01:36:04,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-11-29 01:36:04,114 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:36:04,114 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] [2023-11-29 01:36:04,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-29 01:36:04,114 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:36:04,115 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:36:04,115 INFO L85 PathProgramCache]: Analyzing trace with hash 1501802743, now seen corresponding path program 1 times [2023-11-29 01:36:04,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:36:04,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565334576] [2023-11-29 01:36:04,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:36:04,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:36:04,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:36:04,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:36:04,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:36:04,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565334576] [2023-11-29 01:36:04,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565334576] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:36:04,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:36:04,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:36:04,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360244051] [2023-11-29 01:36:04,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:36:04,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:36:04,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:36:04,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:36:04,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:36:04,186 INFO L87 Difference]: Start difference. First operand 929 states and 1692 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:36:04,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:36:04,229 INFO L93 Difference]: Finished difference Result 1211 states and 2112 transitions. [2023-11-29 01:36:04,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:36:04,230 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2023-11-29 01:36:04,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:36:04,237 INFO L225 Difference]: With dead ends: 1211 [2023-11-29 01:36:04,237 INFO L226 Difference]: Without dead ends: 1058 [2023-11-29 01:36:04,237 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:36:04,238 INFO L413 NwaCegarLoop]: 1534 mSDtfsCounter, 1472 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1472 SdHoareTripleChecker+Valid, 1584 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:36:04,238 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1472 Valid, 1584 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:36:04,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1058 states. [2023-11-29 01:36:04,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1058 to 1056. [2023-11-29 01:36:04,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1056 states, 1054 states have (on average 1.777988614800759) internal successors, (1874), 1055 states have internal predecessors, (1874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:36:04,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1056 states to 1056 states and 1874 transitions. [2023-11-29 01:36:04,270 INFO L78 Accepts]: Start accepts. Automaton has 1056 states and 1874 transitions. Word has length 36 [2023-11-29 01:36:04,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:36:04,270 INFO L495 AbstractCegarLoop]: Abstraction has 1056 states and 1874 transitions. [2023-11-29 01:36:04,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:36:04,270 INFO L276 IsEmpty]: Start isEmpty. Operand 1056 states and 1874 transitions. [2023-11-29 01:36:04,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-11-29 01:36:04,271 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:36:04,271 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] [2023-11-29 01:36:04,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-29 01:36:04,271 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:36:04,272 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:36:04,272 INFO L85 PathProgramCache]: Analyzing trace with hash -1904431113, now seen corresponding path program 1 times [2023-11-29 01:36:04,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:36:04,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269515620] [2023-11-29 01:36:04,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:36:04,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:36:04,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:36:04,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:36:04,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:36:04,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269515620] [2023-11-29 01:36:04,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269515620] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:36:04,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:36:04,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:36:04,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878072169] [2023-11-29 01:36:04,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:36:04,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:36:04,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:36:04,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:36:04,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:36:04,316 INFO L87 Difference]: Start difference. First operand 1056 states and 1874 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:36:04,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:36:04,365 INFO L93 Difference]: Finished difference Result 1568 states and 2616 transitions. [2023-11-29 01:36:04,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:36:04,366 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2023-11-29 01:36:04,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:36:04,374 INFO L225 Difference]: With dead ends: 1568 [2023-11-29 01:36:04,374 INFO L226 Difference]: Without dead ends: 1288 [2023-11-29 01:36:04,375 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:36:04,375 INFO L413 NwaCegarLoop]: 1532 mSDtfsCounter, 1470 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1470 SdHoareTripleChecker+Valid, 1586 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:36:04,376 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1470 Valid, 1586 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:36:04,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1288 states. [2023-11-29 01:36:04,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1288 to 1286. [2023-11-29 01:36:04,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1286 states, 1284 states have (on average 1.705607476635514) internal successors, (2190), 1285 states have internal predecessors, (2190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:36:04,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1286 states to 1286 states and 2190 transitions. [2023-11-29 01:36:04,414 INFO L78 Accepts]: Start accepts. Automaton has 1286 states and 2190 transitions. Word has length 36 [2023-11-29 01:36:04,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:36:04,414 INFO L495 AbstractCegarLoop]: Abstraction has 1286 states and 2190 transitions. [2023-11-29 01:36:04,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:36:04,415 INFO L276 IsEmpty]: Start isEmpty. Operand 1286 states and 2190 transitions. [2023-11-29 01:36:04,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-11-29 01:36:04,416 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:36:04,416 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:36:04,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-29 01:36:04,416 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:36:04,416 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:36:04,416 INFO L85 PathProgramCache]: Analyzing trace with hash -1853448570, now seen corresponding path program 1 times [2023-11-29 01:36:04,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:36:04,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971165566] [2023-11-29 01:36:04,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:36:04,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:36:04,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:36:04,526 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 01:36:04,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:36:04,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971165566] [2023-11-29 01:36:04,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [971165566] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:36:04,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:36:04,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 01:36:04,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582362028] [2023-11-29 01:36:04,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:36:04,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 01:36:04,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:36:04,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 01:36:04,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 01:36:04,529 INFO L87 Difference]: Start difference. First operand 1286 states and 2190 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:36:04,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:36:04,672 INFO L93 Difference]: Finished difference Result 2794 states and 4342 transitions. [2023-11-29 01:36:04,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 01:36:04,672 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 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 50 [2023-11-29 01:36:04,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:36:04,686 INFO L225 Difference]: With dead ends: 2794 [2023-11-29 01:36:04,686 INFO L226 Difference]: Without dead ends: 2424 [2023-11-29 01:36:04,688 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-29 01:36:04,689 INFO L413 NwaCegarLoop]: 1540 mSDtfsCounter, 3033 mSDsluCounter, 1601 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3033 SdHoareTripleChecker+Valid, 3141 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:36:04,689 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3033 Valid, 3141 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:36:04,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2424 states. [2023-11-29 01:36:04,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2424 to 1726. [2023-11-29 01:36:04,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1726 states, 1724 states have (on average 1.6299303944315546) internal successors, (2810), 1725 states have internal predecessors, (2810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:36:04,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1726 states to 1726 states and 2810 transitions. [2023-11-29 01:36:04,755 INFO L78 Accepts]: Start accepts. Automaton has 1726 states and 2810 transitions. Word has length 50 [2023-11-29 01:36:04,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:36:04,755 INFO L495 AbstractCegarLoop]: Abstraction has 1726 states and 2810 transitions. [2023-11-29 01:36:04,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:36:04,755 INFO L276 IsEmpty]: Start isEmpty. Operand 1726 states and 2810 transitions. [2023-11-29 01:36:04,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-11-29 01:36:04,756 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:36:04,756 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:36:04,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-29 01:36:04,757 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:36:04,757 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:36:04,757 INFO L85 PathProgramCache]: Analyzing trace with hash 1815862662, now seen corresponding path program 1 times [2023-11-29 01:36:04,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:36:04,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228693792] [2023-11-29 01:36:04,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:36:04,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:36:04,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:36:04,860 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 01:36:04,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:36:04,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228693792] [2023-11-29 01:36:04,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228693792] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:36:04,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:36:04,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 01:36:04,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870707090] [2023-11-29 01:36:04,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:36:04,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 01:36:04,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:36:04,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 01:36:04,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 01:36:04,862 INFO L87 Difference]: Start difference. First operand 1726 states and 2810 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:36:05,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:36:05,004 INFO L93 Difference]: Finished difference Result 3302 states and 5062 transitions. [2023-11-29 01:36:05,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 01:36:05,005 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 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 50 [2023-11-29 01:36:05,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:36:05,020 INFO L225 Difference]: With dead ends: 3302 [2023-11-29 01:36:05,020 INFO L226 Difference]: Without dead ends: 2792 [2023-11-29 01:36:05,022 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-29 01:36:05,023 INFO L413 NwaCegarLoop]: 1539 mSDtfsCounter, 3035 mSDsluCounter, 1591 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3035 SdHoareTripleChecker+Valid, 3130 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:36:05,023 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3035 Valid, 3130 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:36:05,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2792 states. [2023-11-29 01:36:05,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2792 to 2418. [2023-11-29 01:36:05,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2418 states, 2416 states have (on average 1.5653973509933774) internal successors, (3782), 2417 states have internal predecessors, (3782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:36:05,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2418 states to 2418 states and 3782 transitions. [2023-11-29 01:36:05,162 INFO L78 Accepts]: Start accepts. Automaton has 2418 states and 3782 transitions. Word has length 50 [2023-11-29 01:36:05,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:36:05,163 INFO L495 AbstractCegarLoop]: Abstraction has 2418 states and 3782 transitions. [2023-11-29 01:36:05,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:36:05,163 INFO L276 IsEmpty]: Start isEmpty. Operand 2418 states and 3782 transitions. [2023-11-29 01:36:05,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-11-29 01:36:05,165 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:36:05,165 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:36:05,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-29 01:36:05,165 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:36:05,165 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:36:05,166 INFO L85 PathProgramCache]: Analyzing trace with hash -1590371194, now seen corresponding path program 1 times [2023-11-29 01:36:05,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:36:05,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294292715] [2023-11-29 01:36:05,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:36:05,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:36:05,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:36:05,280 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-29 01:36:05,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:36:05,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294292715] [2023-11-29 01:36:05,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294292715] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:36:05,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:36:05,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 01:36:05,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128502999] [2023-11-29 01:36:05,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:36:05,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 01:36:05,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:36:05,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 01:36:05,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 01:36:05,283 INFO L87 Difference]: Start difference. First operand 2418 states and 3782 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:36:05,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:36:05,463 INFO L93 Difference]: Finished difference Result 3810 states and 5778 transitions. [2023-11-29 01:36:05,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 01:36:05,464 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 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 50 [2023-11-29 01:36:05,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:36:05,482 INFO L225 Difference]: With dead ends: 3810 [2023-11-29 01:36:05,483 INFO L226 Difference]: Without dead ends: 3300 [2023-11-29 01:36:05,485 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-29 01:36:05,485 INFO L413 NwaCegarLoop]: 1538 mSDtfsCounter, 3041 mSDsluCounter, 1596 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3041 SdHoareTripleChecker+Valid, 3134 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:36:05,486 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3041 Valid, 3134 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:36:05,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3300 states. [2023-11-29 01:36:05,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3300 to 2926. [2023-11-29 01:36:05,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2926 states, 2924 states have (on average 1.5383036935704515) internal successors, (4498), 2925 states have internal predecessors, (4498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:36:05,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2926 states to 2926 states and 4498 transitions. [2023-11-29 01:36:05,621 INFO L78 Accepts]: Start accepts. Automaton has 2926 states and 4498 transitions. Word has length 50 [2023-11-29 01:36:05,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:36:05,621 INFO L495 AbstractCegarLoop]: Abstraction has 2926 states and 4498 transitions. [2023-11-29 01:36:05,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:36:05,622 INFO L276 IsEmpty]: Start isEmpty. Operand 2926 states and 4498 transitions. [2023-11-29 01:36:05,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-11-29 01:36:05,623 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:36:05,623 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:36:05,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-29 01:36:05,623 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:36:05,624 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:36:05,624 INFO L85 PathProgramCache]: Analyzing trace with hash -1183432324, now seen corresponding path program 1 times [2023-11-29 01:36:05,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:36:05,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688757091] [2023-11-29 01:36:05,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:36:05,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:36:05,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:36:05,717 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:36:05,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:36:05,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688757091] [2023-11-29 01:36:05,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688757091] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:36:05,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:36:05,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:36:05,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016973826] [2023-11-29 01:36:05,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:36:05,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:36:05,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:36:05,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:36:05,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:36:05,720 INFO L87 Difference]: Start difference. First operand 2926 states and 4498 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:36:05,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:36:05,812 INFO L93 Difference]: Finished difference Result 5078 states and 7536 transitions. [2023-11-29 01:36:05,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:36:05,812 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2023-11-29 01:36:05,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:36:05,828 INFO L225 Difference]: With dead ends: 5078 [2023-11-29 01:36:05,828 INFO L226 Difference]: Without dead ends: 2928 [2023-11-29 01:36:05,831 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:36:05,831 INFO L413 NwaCegarLoop]: 1520 mSDtfsCounter, 29 mSDsluCounter, 1491 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 3011 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:36:05,832 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 3011 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:36:05,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2928 states. [2023-11-29 01:36:05,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2928 to 2926. [2023-11-29 01:36:05,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2926 states, 2924 states have (on average 1.5212038303693571) internal successors, (4448), 2925 states have internal predecessors, (4448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:36:05,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2926 states to 2926 states and 4448 transitions. [2023-11-29 01:36:05,936 INFO L78 Accepts]: Start accepts. Automaton has 2926 states and 4448 transitions. Word has length 51 [2023-11-29 01:36:05,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:36:05,936 INFO L495 AbstractCegarLoop]: Abstraction has 2926 states and 4448 transitions. [2023-11-29 01:36:05,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:36:05,936 INFO L276 IsEmpty]: Start isEmpty. Operand 2926 states and 4448 transitions. [2023-11-29 01:36:05,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-11-29 01:36:05,937 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:36:05,937 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:36:05,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-29 01:36:05,938 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:36:05,938 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:36:05,938 INFO L85 PathProgramCache]: Analyzing trace with hash 1165828046, now seen corresponding path program 1 times [2023-11-29 01:36:05,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:36:05,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511671420] [2023-11-29 01:36:05,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:36:05,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:36:05,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:36:06,015 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:36:06,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:36:06,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511671420] [2023-11-29 01:36:06,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511671420] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:36:06,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:36:06,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:36:06,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942077112] [2023-11-29 01:36:06,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:36:06,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:36:06,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:36:06,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:36:06,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:36:06,017 INFO L87 Difference]: Start difference. First operand 2926 states and 4448 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:36:06,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:36:06,075 INFO L93 Difference]: Finished difference Result 3772 states and 5635 transitions. [2023-11-29 01:36:06,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:36:06,076 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 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 52 [2023-11-29 01:36:06,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:36:06,084 INFO L225 Difference]: With dead ends: 3772 [2023-11-29 01:36:06,084 INFO L226 Difference]: Without dead ends: 1622 [2023-11-29 01:36:06,087 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:36:06,088 INFO L413 NwaCegarLoop]: 1518 mSDtfsCounter, 23 mSDsluCounter, 1490 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 3008 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:36:06,088 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 3008 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:36:06,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1622 states. [2023-11-29 01:36:06,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1622 to 1615. [2023-11-29 01:36:06,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1615 states, 1613 states have (on average 1.6261624302541848) internal successors, (2623), 1614 states have internal predecessors, (2623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:36:06,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1615 states to 1615 states and 2623 transitions. [2023-11-29 01:36:06,165 INFO L78 Accepts]: Start accepts. Automaton has 1615 states and 2623 transitions. Word has length 52 [2023-11-29 01:36:06,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:36:06,165 INFO L495 AbstractCegarLoop]: Abstraction has 1615 states and 2623 transitions. [2023-11-29 01:36:06,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:36:06,165 INFO L276 IsEmpty]: Start isEmpty. Operand 1615 states and 2623 transitions. [2023-11-29 01:36:06,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-11-29 01:36:06,166 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:36:06,166 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:36:06,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-29 01:36:06,166 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:36:06,167 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:36:06,167 INFO L85 PathProgramCache]: Analyzing trace with hash 2138930058, now seen corresponding path program 1 times [2023-11-29 01:36:06,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:36:06,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2147440307] [2023-11-29 01:36:06,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:36:06,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:36:06,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:36:06,241 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:36:06,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:36:06,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2147440307] [2023-11-29 01:36:06,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2147440307] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:36:06,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:36:06,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:36:06,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181621010] [2023-11-29 01:36:06,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:36:06,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:36:06,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:36:06,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:36:06,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:36:06,243 INFO L87 Difference]: Start difference. First operand 1615 states and 2623 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:36:06,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:36:06,286 INFO L93 Difference]: Finished difference Result 2033 states and 3201 transitions. [2023-11-29 01:36:06,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:36:06,287 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2023-11-29 01:36:06,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:36:06,293 INFO L225 Difference]: With dead ends: 2033 [2023-11-29 01:36:06,294 INFO L226 Difference]: Without dead ends: 1203 [2023-11-29 01:36:06,295 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:36:06,296 INFO L413 NwaCegarLoop]: 1512 mSDtfsCounter, 25 mSDsluCounter, 1475 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 2987 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:36:06,296 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 2987 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:36:06,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1203 states. [2023-11-29 01:36:06,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1203 to 1201. [2023-11-29 01:36:06,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1201 states, 1199 states have (on average 1.6997497914929107) internal successors, (2038), 1200 states have internal predecessors, (2038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:36:06,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1201 states to 1201 states and 2038 transitions. [2023-11-29 01:36:06,330 INFO L78 Accepts]: Start accepts. Automaton has 1201 states and 2038 transitions. Word has length 53 [2023-11-29 01:36:06,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:36:06,330 INFO L495 AbstractCegarLoop]: Abstraction has 1201 states and 2038 transitions. [2023-11-29 01:36:06,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:36:06,331 INFO L276 IsEmpty]: Start isEmpty. Operand 1201 states and 2038 transitions. [2023-11-29 01:36:06,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-11-29 01:36:06,331 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:36:06,332 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:36:06,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-29 01:36:06,332 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:36:06,332 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:36:06,332 INFO L85 PathProgramCache]: Analyzing trace with hash 1489407768, now seen corresponding path program 1 times [2023-11-29 01:36:06,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:36:06,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841969208] [2023-11-29 01:36:06,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:36:06,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:36:06,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:36:09,579 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:36:09,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:36:09,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841969208] [2023-11-29 01:36:09,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841969208] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:36:09,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1353911110] [2023-11-29 01:36:09,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:36:09,580 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:36:09,580 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bd1c8e1-fb3f-41e3-b7d6-2805e6282054/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:36:09,581 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bd1c8e1-fb3f-41e3-b7d6-2805e6282054/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:36:09,583 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bd1c8e1-fb3f-41e3-b7d6-2805e6282054/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 01:36:09,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:36:09,681 INFO L262 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-29 01:36:09,686 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:36:09,870 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 01:36:09,870 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:36:10,035 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 01:36:10,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1353911110] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:36:10,035 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:36:10,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 5, 4] total 18 [2023-11-29 01:36:10,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875530467] [2023-11-29 01:36:10,036 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:36:10,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-29 01:36:10,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:36:10,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-29 01:36:10,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2023-11-29 01:36:10,037 INFO L87 Difference]: Start difference. First operand 1201 states and 2038 transitions. Second operand has 18 states, 18 states have (on average 8.38888888888889) internal successors, (151), 18 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:36:13,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:36:13,717 INFO L93 Difference]: Finished difference Result 3344 states and 4834 transitions. [2023-11-29 01:36:13,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2023-11-29 01:36:13,718 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 8.38888888888889) internal successors, (151), 18 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2023-11-29 01:36:13,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:36:13,727 INFO L225 Difference]: With dead ends: 3344 [2023-11-29 01:36:13,727 INFO L226 Difference]: Without dead ends: 2928 [2023-11-29 01:36:13,730 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1046 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=744, Invalid=2916, Unknown=0, NotChecked=0, Total=3660 [2023-11-29 01:36:13,731 INFO L413 NwaCegarLoop]: 1491 mSDtfsCounter, 14309 mSDsluCounter, 4745 mSDsCounter, 0 mSdLazyCounter, 581 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14309 SdHoareTripleChecker+Valid, 6236 SdHoareTripleChecker+Invalid, 620 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 581 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-29 01:36:13,731 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14309 Valid, 6236 Invalid, 620 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 581 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-29 01:36:13,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2928 states. [2023-11-29 01:36:13,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2928 to 2672. [2023-11-29 01:36:13,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2672 states, 2670 states have (on average 1.4576779026217228) internal successors, (3892), 2671 states have internal predecessors, (3892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:36:13,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2672 states to 2672 states and 3892 transitions. [2023-11-29 01:36:13,818 INFO L78 Accepts]: Start accepts. Automaton has 2672 states and 3892 transitions. Word has length 55 [2023-11-29 01:36:13,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:36:13,818 INFO L495 AbstractCegarLoop]: Abstraction has 2672 states and 3892 transitions. [2023-11-29 01:36:13,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 8.38888888888889) internal successors, (151), 18 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:36:13,819 INFO L276 IsEmpty]: Start isEmpty. Operand 2672 states and 3892 transitions. [2023-11-29 01:36:13,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-11-29 01:36:13,819 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:36:13,819 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-29 01:36:13,825 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bd1c8e1-fb3f-41e3-b7d6-2805e6282054/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 01:36:14,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bd1c8e1-fb3f-41e3-b7d6-2805e6282054/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-29 01:36:14,020 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:36:14,020 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:36:14,021 INFO L85 PathProgramCache]: Analyzing trace with hash -294784256, now seen corresponding path program 1 times [2023-11-29 01:36:14,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:36:14,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477291353] [2023-11-29 01:36:14,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:36:14,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:36:14,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:36:14,283 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:36:14,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:36:14,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477291353] [2023-11-29 01:36:14,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477291353] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:36:14,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [375986471] [2023-11-29 01:36:14,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:36:14,284 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:36:14,284 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bd1c8e1-fb3f-41e3-b7d6-2805e6282054/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:36:14,285 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bd1c8e1-fb3f-41e3-b7d6-2805e6282054/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:36:14,287 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bd1c8e1-fb3f-41e3-b7d6-2805e6282054/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 01:36:14,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:36:14,390 INFO L262 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-29 01:36:14,393 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:36:14,781 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:36:14,781 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:36:15,946 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:36:15,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [375986471] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:36:15,947 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:36:15,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 12] total 28 [2023-11-29 01:36:15,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193477897] [2023-11-29 01:36:15,947 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:36:15,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-11-29 01:36:15,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:36:15,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-11-29 01:36:15,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=615, Unknown=0, NotChecked=0, Total=756 [2023-11-29 01:36:15,949 INFO L87 Difference]: Start difference. First operand 2672 states and 3892 transitions. Second operand has 28 states, 28 states have (on average 5.142857142857143) internal successors, (144), 28 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:36:16,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:36:16,756 INFO L93 Difference]: Finished difference Result 6001 states and 8124 transitions. [2023-11-29 01:36:16,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-29 01:36:16,757 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 5.142857142857143) internal successors, (144), 28 states have internal predecessors, (144), 0 states have call successors, (0), 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 56 [2023-11-29 01:36:16,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:36:16,769 INFO L225 Difference]: With dead ends: 6001 [2023-11-29 01:36:16,769 INFO L226 Difference]: Without dead ends: 4422 [2023-11-29 01:36:16,773 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 283 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=349, Invalid=1211, Unknown=0, NotChecked=0, Total=1560 [2023-11-29 01:36:16,774 INFO L413 NwaCegarLoop]: 1485 mSDtfsCounter, 6153 mSDsluCounter, 10594 mSDsCounter, 0 mSdLazyCounter, 473 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6153 SdHoareTripleChecker+Valid, 12079 SdHoareTripleChecker+Invalid, 495 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 473 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 01:36:16,774 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6153 Valid, 12079 Invalid, 495 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 473 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 01:36:16,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4422 states. [2023-11-29 01:36:16,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4422 to 4212. [2023-11-29 01:36:16,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4212 states, 4210 states have (on average 1.3888361045130642) internal successors, (5847), 4211 states have internal predecessors, (5847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:36:16,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4212 states to 4212 states and 5847 transitions. [2023-11-29 01:36:16,971 INFO L78 Accepts]: Start accepts. Automaton has 4212 states and 5847 transitions. Word has length 56 [2023-11-29 01:36:16,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:36:16,971 INFO L495 AbstractCegarLoop]: Abstraction has 4212 states and 5847 transitions. [2023-11-29 01:36:16,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 5.142857142857143) internal successors, (144), 28 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:36:16,971 INFO L276 IsEmpty]: Start isEmpty. Operand 4212 states and 5847 transitions. [2023-11-29 01:36:16,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-11-29 01:36:16,972 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:36:16,972 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-29 01:36:16,977 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bd1c8e1-fb3f-41e3-b7d6-2805e6282054/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 01:36:17,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bd1c8e1-fb3f-41e3-b7d6-2805e6282054/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-29 01:36:17,173 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:36:17,173 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:36:17,173 INFO L85 PathProgramCache]: Analyzing trace with hash 2030773760, now seen corresponding path program 1 times [2023-11-29 01:36:17,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:36:17,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934099175] [2023-11-29 01:36:17,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:36:17,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:36:17,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:36:17,588 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:36:17,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:36:17,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934099175] [2023-11-29 01:36:17,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934099175] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:36:17,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [897291656] [2023-11-29 01:36:17,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:36:17,589 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:36:17,589 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bd1c8e1-fb3f-41e3-b7d6-2805e6282054/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:36:17,590 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bd1c8e1-fb3f-41e3-b7d6-2805e6282054/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:36:17,591 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bd1c8e1-fb3f-41e3-b7d6-2805e6282054/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 01:36:17,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:36:17,673 INFO L262 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-29 01:36:17,676 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:36:18,215 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:36:18,216 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:36:18,981 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:36:18,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [897291656] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:36:18,982 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:36:18,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 28 [2023-11-29 01:36:18,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480754275] [2023-11-29 01:36:18,982 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:36:18,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-11-29 01:36:18,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:36:18,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-11-29 01:36:18,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=604, Unknown=0, NotChecked=0, Total=756 [2023-11-29 01:36:18,984 INFO L87 Difference]: Start difference. First operand 4212 states and 5847 transitions. Second operand has 28 states, 28 states have (on average 4.964285714285714) internal successors, (139), 28 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:36:19,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:36:19,794 INFO L93 Difference]: Finished difference Result 7561 states and 10123 transitions. [2023-11-29 01:36:19,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-29 01:36:19,795 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 4.964285714285714) internal successors, (139), 28 states have internal predecessors, (139), 0 states have call successors, (0), 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 56 [2023-11-29 01:36:19,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:36:19,800 INFO L225 Difference]: With dead ends: 7561 [2023-11-29 01:36:19,800 INFO L226 Difference]: Without dead ends: 4560 [2023-11-29 01:36:19,803 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 373 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=449, Invalid=1357, Unknown=0, NotChecked=0, Total=1806 [2023-11-29 01:36:19,804 INFO L413 NwaCegarLoop]: 1493 mSDtfsCounter, 13445 mSDsluCounter, 4640 mSDsCounter, 0 mSdLazyCounter, 348 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13445 SdHoareTripleChecker+Valid, 6133 SdHoareTripleChecker+Invalid, 373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 01:36:19,804 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13445 Valid, 6133 Invalid, 373 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 348 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 01:36:19,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4560 states. [2023-11-29 01:36:19,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4560 to 4272. [2023-11-29 01:36:19,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4272 states, 4270 states have (on average 1.3740046838407494) internal successors, (5867), 4271 states have internal predecessors, (5867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:36:19,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4272 states to 4272 states and 5867 transitions. [2023-11-29 01:36:19,953 INFO L78 Accepts]: Start accepts. Automaton has 4272 states and 5867 transitions. Word has length 56 [2023-11-29 01:36:19,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:36:19,953 INFO L495 AbstractCegarLoop]: Abstraction has 4272 states and 5867 transitions. [2023-11-29 01:36:19,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 4.964285714285714) internal successors, (139), 28 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:36:19,954 INFO L276 IsEmpty]: Start isEmpty. Operand 4272 states and 5867 transitions. [2023-11-29 01:36:19,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-11-29 01:36:19,954 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:36:19,955 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-29 01:36:19,959 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bd1c8e1-fb3f-41e3-b7d6-2805e6282054/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 01:36:20,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bd1c8e1-fb3f-41e3-b7d6-2805e6282054/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-29 01:36:20,155 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:36:20,156 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:36:20,156 INFO L85 PathProgramCache]: Analyzing trace with hash -1035298560, now seen corresponding path program 1 times [2023-11-29 01:36:20,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:36:20,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325554312] [2023-11-29 01:36:20,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:36:20,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:36:20,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:36:20,388 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:36:20,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:36:20,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325554312] [2023-11-29 01:36:20,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1325554312] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:36:20,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [648978798] [2023-11-29 01:36:20,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:36:20,388 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:36:20,389 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bd1c8e1-fb3f-41e3-b7d6-2805e6282054/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:36:20,389 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bd1c8e1-fb3f-41e3-b7d6-2805e6282054/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:36:20,392 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bd1c8e1-fb3f-41e3-b7d6-2805e6282054/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 01:36:20,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:36:20,490 INFO L262 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-29 01:36:20,493 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:36:21,031 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:36:21,031 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:36:21,742 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:36:21,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [648978798] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:36:21,742 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:36:21,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 29 [2023-11-29 01:36:21,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415167712] [2023-11-29 01:36:21,742 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:36:21,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-11-29 01:36:21,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:36:21,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-11-29 01:36:21,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=657, Unknown=0, NotChecked=0, Total=812 [2023-11-29 01:36:21,744 INFO L87 Difference]: Start difference. First operand 4272 states and 5867 transitions. Second operand has 29 states, 29 states have (on average 5.241379310344827) internal successors, (152), 29 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:36:22,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:36:22,659 INFO L93 Difference]: Finished difference Result 10853 states and 14150 transitions. [2023-11-29 01:36:22,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-29 01:36:22,660 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 5.241379310344827) internal successors, (152), 29 states have internal predecessors, (152), 0 states have call successors, (0), 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 56 [2023-11-29 01:36:22,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:36:22,669 INFO L225 Difference]: With dead ends: 10853 [2023-11-29 01:36:22,670 INFO L226 Difference]: Without dead ends: 8091 [2023-11-29 01:36:22,674 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 441 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=476, Invalid=1504, Unknown=0, NotChecked=0, Total=1980 [2023-11-29 01:36:22,674 INFO L413 NwaCegarLoop]: 1484 mSDtfsCounter, 10515 mSDsluCounter, 9054 mSDsCounter, 0 mSdLazyCounter, 458 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10515 SdHoareTripleChecker+Valid, 10538 SdHoareTripleChecker+Invalid, 479 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 458 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 01:36:22,674 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10515 Valid, 10538 Invalid, 479 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 458 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 01:36:22,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8091 states. [2023-11-29 01:36:22,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8091 to 7571. [2023-11-29 01:36:22,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7571 states, 7569 states have (on average 1.3065134099616857) internal successors, (9889), 7570 states have internal predecessors, (9889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:36:23,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7571 states to 7571 states and 9889 transitions. [2023-11-29 01:36:23,003 INFO L78 Accepts]: Start accepts. Automaton has 7571 states and 9889 transitions. Word has length 56 [2023-11-29 01:36:23,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:36:23,003 INFO L495 AbstractCegarLoop]: Abstraction has 7571 states and 9889 transitions. [2023-11-29 01:36:23,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 5.241379310344827) internal successors, (152), 29 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:36:23,003 INFO L276 IsEmpty]: Start isEmpty. Operand 7571 states and 9889 transitions. [2023-11-29 01:36:23,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-11-29 01:36:23,004 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:36:23,004 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:36:23,009 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bd1c8e1-fb3f-41e3-b7d6-2805e6282054/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-29 01:36:23,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bd1c8e1-fb3f-41e3-b7d6-2805e6282054/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:36:23,208 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:36:23,208 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:36:23,209 INFO L85 PathProgramCache]: Analyzing trace with hash -1142870954, now seen corresponding path program 1 times [2023-11-29 01:36:23,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:36:23,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841674970] [2023-11-29 01:36:23,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:36:23,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:36:23,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:36:24,509 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:36:24,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:36:24,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841674970] [2023-11-29 01:36:24,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841674970] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:36:24,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2038107732] [2023-11-29 01:36:24,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:36:24,510 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:36:24,510 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bd1c8e1-fb3f-41e3-b7d6-2805e6282054/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:36:24,511 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bd1c8e1-fb3f-41e3-b7d6-2805e6282054/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:36:24,511 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bd1c8e1-fb3f-41e3-b7d6-2805e6282054/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 01:36:24,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:36:24,627 INFO L262 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-29 01:36:24,629 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:36:25,588 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:36:25,588 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:36:26,562 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:36:26,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2038107732] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:36:26,562 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:36:26,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 12, 12] total 39 [2023-11-29 01:36:26,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114933423] [2023-11-29 01:36:26,563 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:36:26,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2023-11-29 01:36:26,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:36:26,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2023-11-29 01:36:26,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=1367, Unknown=0, NotChecked=0, Total=1482 [2023-11-29 01:36:26,565 INFO L87 Difference]: Start difference. First operand 7571 states and 9889 transitions. Second operand has 39 states, 39 states have (on average 3.8974358974358974) internal successors, (152), 39 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:36:52,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:36:52,106 INFO L93 Difference]: Finished difference Result 11787 states and 15049 transitions. [2023-11-29 01:36:52,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 161 states. [2023-11-29 01:36:52,106 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 3.8974358974358974) internal successors, (152), 39 states have internal predecessors, (152), 0 states have call successors, (0), 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 57 [2023-11-29 01:36:52,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:36:52,119 INFO L225 Difference]: With dead ends: 11787 [2023-11-29 01:36:52,119 INFO L226 Difference]: Without dead ends: 8173 [2023-11-29 01:36:52,136 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 196 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13453 ImplicationChecksByTransitivity, 24.4s TimeCoverageRelationStatistics Valid=6891, Invalid=32115, Unknown=0, NotChecked=0, Total=39006 [2023-11-29 01:36:52,136 INFO L413 NwaCegarLoop]: 1576 mSDtfsCounter, 13974 mSDsluCounter, 26232 mSDsCounter, 0 mSdLazyCounter, 1812 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13974 SdHoareTripleChecker+Valid, 27808 SdHoareTripleChecker+Invalid, 1940 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 1812 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-29 01:36:52,137 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13974 Valid, 27808 Invalid, 1940 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [128 Valid, 1812 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-29 01:36:52,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8173 states. [2023-11-29 01:36:52,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8173 to 6461. [2023-11-29 01:36:52,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6461 states, 6459 states have (on average 1.3147546059761572) internal successors, (8492), 6460 states have internal predecessors, (8492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:36:52,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6461 states to 6461 states and 8492 transitions. [2023-11-29 01:36:52,462 INFO L78 Accepts]: Start accepts. Automaton has 6461 states and 8492 transitions. Word has length 57 [2023-11-29 01:36:52,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:36:52,462 INFO L495 AbstractCegarLoop]: Abstraction has 6461 states and 8492 transitions. [2023-11-29 01:36:52,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 3.8974358974358974) internal successors, (152), 39 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:36:52,462 INFO L276 IsEmpty]: Start isEmpty. Operand 6461 states and 8492 transitions. [2023-11-29 01:36:52,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-11-29 01:36:52,463 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:36:52,463 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:36:52,469 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bd1c8e1-fb3f-41e3-b7d6-2805e6282054/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-29 01:36:52,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bd1c8e1-fb3f-41e3-b7d6-2805e6282054/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:36:52,664 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:36:52,664 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:36:52,665 INFO L85 PathProgramCache]: Analyzing trace with hash 200986498, now seen corresponding path program 1 times [2023-11-29 01:36:52,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:36:52,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033467437] [2023-11-29 01:36:52,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:36:52,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:36:52,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:36:53,317 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:36:53,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:36:53,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033467437] [2023-11-29 01:36:53,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033467437] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:36:53,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1690228380] [2023-11-29 01:36:53,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:36:53,318 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:36:53,318 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bd1c8e1-fb3f-41e3-b7d6-2805e6282054/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:36:53,318 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bd1c8e1-fb3f-41e3-b7d6-2805e6282054/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:36:53,319 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bd1c8e1-fb3f-41e3-b7d6-2805e6282054/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 01:36:53,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:36:53,428 INFO L262 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-29 01:36:53,430 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:36:54,372 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:36:54,372 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:36:55,787 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:36:55,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1690228380] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:36:55,787 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:36:55,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 15, 13] total 36 [2023-11-29 01:36:55,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116328621] [2023-11-29 01:36:55,788 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:36:55,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-11-29 01:36:55,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:36:55,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-11-29 01:36:55,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=1096, Unknown=0, NotChecked=0, Total=1260 [2023-11-29 01:36:55,790 INFO L87 Difference]: Start difference. First operand 6461 states and 8492 transitions. Second operand has 36 states, 36 states have (on average 4.361111111111111) internal successors, (157), 36 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:36:59,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:36:59,032 INFO L93 Difference]: Finished difference Result 8057 states and 10458 transitions. [2023-11-29 01:36:59,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-11-29 01:36:59,032 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 4.361111111111111) internal successors, (157), 36 states have internal predecessors, (157), 0 states have call successors, (0), 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 58 [2023-11-29 01:36:59,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:36:59,039 INFO L225 Difference]: With dead ends: 8057 [2023-11-29 01:36:59,039 INFO L226 Difference]: Without dead ends: 5289 [2023-11-29 01:36:59,044 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 827 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=912, Invalid=3378, Unknown=0, NotChecked=0, Total=4290 [2023-11-29 01:36:59,045 INFO L413 NwaCegarLoop]: 1486 mSDtfsCounter, 15581 mSDsluCounter, 19154 mSDsCounter, 0 mSdLazyCounter, 556 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15581 SdHoareTripleChecker+Valid, 20640 SdHoareTripleChecker+Invalid, 632 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 556 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 01:36:59,046 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15581 Valid, 20640 Invalid, 632 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [76 Valid, 556 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 01:36:59,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5289 states. [2023-11-29 01:36:59,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5289 to 5083. [2023-11-29 01:36:59,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5083 states, 5081 states have (on average 1.3332021255658335) internal successors, (6774), 5082 states have internal predecessors, (6774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:36:59,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5083 states to 5083 states and 6774 transitions. [2023-11-29 01:36:59,389 INFO L78 Accepts]: Start accepts. Automaton has 5083 states and 6774 transitions. Word has length 58 [2023-11-29 01:36:59,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:36:59,389 INFO L495 AbstractCegarLoop]: Abstraction has 5083 states and 6774 transitions. [2023-11-29 01:36:59,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 4.361111111111111) internal successors, (157), 36 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:36:59,390 INFO L276 IsEmpty]: Start isEmpty. Operand 5083 states and 6774 transitions. [2023-11-29 01:36:59,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-11-29 01:36:59,391 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:36:59,391 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:36:59,397 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bd1c8e1-fb3f-41e3-b7d6-2805e6282054/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 01:36:59,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bd1c8e1-fb3f-41e3-b7d6-2805e6282054/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-11-29 01:36:59,592 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:36:59,592 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:36:59,592 INFO L85 PathProgramCache]: Analyzing trace with hash 1726555136, now seen corresponding path program 1 times [2023-11-29 01:36:59,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:36:59,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559850629] [2023-11-29 01:36:59,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:36:59,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:36:59,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:37:00,219 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:37:00,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:37:00,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559850629] [2023-11-29 01:37:00,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559850629] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:37:00,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1896142521] [2023-11-29 01:37:00,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:37:00,220 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:37:00,220 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bd1c8e1-fb3f-41e3-b7d6-2805e6282054/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:37:00,221 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bd1c8e1-fb3f-41e3-b7d6-2805e6282054/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:37:00,224 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bd1c8e1-fb3f-41e3-b7d6-2805e6282054/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 01:37:00,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:37:00,383 INFO L262 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-29 01:37:00,385 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:37:03,247 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:37:03,247 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:37:05,114 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:37:05,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1896142521] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:37:05,114 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:37:05,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 18, 17] total 42 [2023-11-29 01:37:05,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252634706] [2023-11-29 01:37:05,115 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:37:05,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2023-11-29 01:37:05,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:37:05,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2023-11-29 01:37:05,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=211, Invalid=1511, Unknown=0, NotChecked=0, Total=1722 [2023-11-29 01:37:05,117 INFO L87 Difference]: Start difference. First operand 5083 states and 6774 transitions. Second operand has 42 states, 42 states have (on average 3.6666666666666665) internal successors, (154), 42 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:37:16,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:37:16,737 INFO L93 Difference]: Finished difference Result 8994 states and 11617 transitions. [2023-11-29 01:37:16,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2023-11-29 01:37:16,738 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 3.6666666666666665) internal successors, (154), 42 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2023-11-29 01:37:16,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:37:16,742 INFO L225 Difference]: With dead ends: 8994 [2023-11-29 01:37:16,742 INFO L226 Difference]: Without dead ends: 6842 [2023-11-29 01:37:16,747 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 88 SyntacticMatches, 2 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3738 ImplicationChecksByTransitivity, 11.3s TimeCoverageRelationStatistics Valid=2741, Invalid=9915, Unknown=0, NotChecked=0, Total=12656 [2023-11-29 01:37:16,748 INFO L413 NwaCegarLoop]: 1512 mSDtfsCounter, 20817 mSDsluCounter, 18244 mSDsCounter, 0 mSdLazyCounter, 1372 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20817 SdHoareTripleChecker+Valid, 19756 SdHoareTripleChecker+Invalid, 1454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 1372 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-11-29 01:37:16,748 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20817 Valid, 19756 Invalid, 1454 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [82 Valid, 1372 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-29 01:37:16,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6842 states. [2023-11-29 01:37:16,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6842 to 3911. [2023-11-29 01:37:16,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3911 states, 3909 states have (on average 1.363008442056792) internal successors, (5328), 3910 states have internal predecessors, (5328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:37:16,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3911 states to 3911 states and 5328 transitions. [2023-11-29 01:37:16,983 INFO L78 Accepts]: Start accepts. Automaton has 3911 states and 5328 transitions. Word has length 59 [2023-11-29 01:37:16,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:37:16,984 INFO L495 AbstractCegarLoop]: Abstraction has 3911 states and 5328 transitions. [2023-11-29 01:37:16,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 3.6666666666666665) internal successors, (154), 42 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:37:16,984 INFO L276 IsEmpty]: Start isEmpty. Operand 3911 states and 5328 transitions. [2023-11-29 01:37:16,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-11-29 01:37:16,985 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:37:16,985 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] [2023-11-29 01:37:16,990 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bd1c8e1-fb3f-41e3-b7d6-2805e6282054/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-29 01:37:17,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bd1c8e1-fb3f-41e3-b7d6-2805e6282054/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-11-29 01:37:17,186 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:37:17,186 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:37:17,186 INFO L85 PathProgramCache]: Analyzing trace with hash -314623887, now seen corresponding path program 1 times [2023-11-29 01:37:17,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:37:17,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277603138] [2023-11-29 01:37:17,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:37:17,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:37:17,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:37:17,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:37:17,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:37:17,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277603138] [2023-11-29 01:37:17,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277603138] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:37:17,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:37:17,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:37:17,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33291997] [2023-11-29 01:37:17,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:37:17,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:37:17,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:37:17,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:37:17,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:37:17,306 INFO L87 Difference]: Start difference. First operand 3911 states and 5328 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:37:23,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:37:23,959 INFO L93 Difference]: Finished difference Result 6166 states and 9637 transitions. [2023-11-29 01:37:23,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:37:23,959 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2023-11-29 01:37:23,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:37:23,962 INFO L225 Difference]: With dead ends: 6166 [2023-11-29 01:37:23,962 INFO L226 Difference]: Without dead ends: 5413 [2023-11-29 01:37:23,963 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 01:37:23,964 INFO L413 NwaCegarLoop]: 738 mSDtfsCounter, 2312 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 5357 mSolverCounterSat, 1153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2312 SdHoareTripleChecker+Valid, 756 SdHoareTripleChecker+Invalid, 6510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1153 IncrementalHoareTripleChecker+Valid, 5357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2023-11-29 01:37:23,964 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2312 Valid, 756 Invalid, 6510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1153 Valid, 5357 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2023-11-29 01:37:23,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5413 states. [2023-11-29 01:37:24,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5413 to 5413. [2023-11-29 01:37:24,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5413 states, 5411 states have (on average 1.375346516355572) internal successors, (7442), 5412 states have internal predecessors, (7442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:37:24,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5413 states to 5413 states and 7442 transitions. [2023-11-29 01:37:24,186 INFO L78 Accepts]: Start accepts. Automaton has 5413 states and 7442 transitions. Word has length 66 [2023-11-29 01:37:24,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:37:24,186 INFO L495 AbstractCegarLoop]: Abstraction has 5413 states and 7442 transitions. [2023-11-29 01:37:24,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:37:24,186 INFO L276 IsEmpty]: Start isEmpty. Operand 5413 states and 7442 transitions. [2023-11-29 01:37:24,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-11-29 01:37:24,188 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:37:24,188 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:37:24,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-11-29 01:37:24,188 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:37:24,188 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:37:24,189 INFO L85 PathProgramCache]: Analyzing trace with hash -1874846004, now seen corresponding path program 1 times [2023-11-29 01:37:24,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:37:24,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662868925] [2023-11-29 01:37:24,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:37:24,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:37:24,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:37:25,108 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 36 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:37:25,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:37:25,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662868925] [2023-11-29 01:37:25,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662868925] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:37:25,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [986187889] [2023-11-29 01:37:25,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:37:25,109 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:37:25,109 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bd1c8e1-fb3f-41e3-b7d6-2805e6282054/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:37:25,110 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bd1c8e1-fb3f-41e3-b7d6-2805e6282054/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:37:25,111 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bd1c8e1-fb3f-41e3-b7d6-2805e6282054/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 01:37:25,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:37:25,209 INFO L262 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-29 01:37:25,212 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:37:25,850 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 30 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:37:25,850 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:37:27,609 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 28 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:37:27,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [986187889] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:37:27,609 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:37:27,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 11, 11] total 35 [2023-11-29 01:37:27,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559770231] [2023-11-29 01:37:27,610 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:37:27,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-11-29 01:37:27,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:37:27,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-11-29 01:37:27,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=1139, Unknown=0, NotChecked=0, Total=1260 [2023-11-29 01:37:27,612 INFO L87 Difference]: Start difference. First operand 5413 states and 7442 transitions. Second operand has 36 states, 36 states have (on average 6.944444444444445) internal successors, (250), 35 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:37:39,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:37:39,310 INFO L93 Difference]: Finished difference Result 9694 states and 12722 transitions. [2023-11-29 01:37:39,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 138 states. [2023-11-29 01:37:39,311 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 6.944444444444445) internal successors, (250), 35 states have internal predecessors, (250), 0 states have call successors, (0), 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 93 [2023-11-29 01:37:39,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:37:39,316 INFO L225 Difference]: With dead ends: 9694 [2023-11-29 01:37:39,316 INFO L226 Difference]: Without dead ends: 7284 [2023-11-29 01:37:39,320 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 336 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 170 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9657 ImplicationChecksByTransitivity, 10.4s TimeCoverageRelationStatistics Valid=4374, Invalid=25038, Unknown=0, NotChecked=0, Total=29412 [2023-11-29 01:37:39,321 INFO L413 NwaCegarLoop]: 1540 mSDtfsCounter, 25172 mSDsluCounter, 15972 mSDsCounter, 0 mSdLazyCounter, 1807 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25172 SdHoareTripleChecker+Valid, 17512 SdHoareTripleChecker+Invalid, 1901 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 1807 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-29 01:37:39,321 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25172 Valid, 17512 Invalid, 1901 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [94 Valid, 1807 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-29 01:37:39,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7284 states. [2023-11-29 01:37:39,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7284 to 6421. [2023-11-29 01:37:39,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6421 states, 6419 states have (on average 1.3481850755569402) internal successors, (8654), 6420 states have internal predecessors, (8654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:37:39,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6421 states to 6421 states and 8654 transitions. [2023-11-29 01:37:39,816 INFO L78 Accepts]: Start accepts. Automaton has 6421 states and 8654 transitions. Word has length 93 [2023-11-29 01:37:39,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:37:39,817 INFO L495 AbstractCegarLoop]: Abstraction has 6421 states and 8654 transitions. [2023-11-29 01:37:39,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 6.944444444444445) internal successors, (250), 35 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:37:39,817 INFO L276 IsEmpty]: Start isEmpty. Operand 6421 states and 8654 transitions. [2023-11-29 01:37:39,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-11-29 01:37:39,819 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:37:39,820 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:37:39,825 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bd1c8e1-fb3f-41e3-b7d6-2805e6282054/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-29 01:37:40,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bd1c8e1-fb3f-41e3-b7d6-2805e6282054/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-11-29 01:37:40,020 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:37:40,021 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:37:40,021 INFO L85 PathProgramCache]: Analyzing trace with hash 1009068314, now seen corresponding path program 1 times [2023-11-29 01:37:40,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:37:40,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807653201] [2023-11-29 01:37:40,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:37:40,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:37:40,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:37:41,115 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 51 proven. 6 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-11-29 01:37:41,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:37:41,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807653201] [2023-11-29 01:37:41,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807653201] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:37:41,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [14311272] [2023-11-29 01:37:41,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:37:41,116 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:37:41,116 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bd1c8e1-fb3f-41e3-b7d6-2805e6282054/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:37:41,116 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bd1c8e1-fb3f-41e3-b7d6-2805e6282054/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:37:41,117 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bd1c8e1-fb3f-41e3-b7d6-2805e6282054/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 01:37:41,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:37:41,227 INFO L262 TraceCheckSpWp]: Trace formula consists of 418 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-29 01:37:41,230 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:37:42,122 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 15 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:37:42,122 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:37:43,673 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 13 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:37:43,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [14311272] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:37:43,673 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:37:43,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 11, 11] total 38 [2023-11-29 01:37:43,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145769274] [2023-11-29 01:37:43,673 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:37:43,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2023-11-29 01:37:43,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:37:43,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2023-11-29 01:37:43,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=1336, Unknown=0, NotChecked=0, Total=1482 [2023-11-29 01:37:43,675 INFO L87 Difference]: Start difference. First operand 6421 states and 8654 transitions. Second operand has 39 states, 39 states have (on average 6.487179487179487) internal successors, (253), 38 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:37:53,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:37:53,217 INFO L93 Difference]: Finished difference Result 9229 states and 12120 transitions. [2023-11-29 01:37:53,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2023-11-29 01:37:53,218 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 6.487179487179487) internal successors, (253), 38 states have internal predecessors, (253), 0 states have call successors, (0), 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 93 [2023-11-29 01:37:53,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:37:53,224 INFO L225 Difference]: With dead ends: 9229 [2023-11-29 01:37:53,224 INFO L226 Difference]: Without dead ends: 6533 [2023-11-29 01:37:53,229 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5217 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=2715, Invalid=15645, Unknown=0, NotChecked=0, Total=18360 [2023-11-29 01:37:53,230 INFO L413 NwaCegarLoop]: 1567 mSDtfsCounter, 21877 mSDsluCounter, 20805 mSDsCounter, 0 mSdLazyCounter, 2317 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21877 SdHoareTripleChecker+Valid, 22372 SdHoareTripleChecker+Invalid, 2413 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 2317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-29 01:37:53,230 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21877 Valid, 22372 Invalid, 2413 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [96 Valid, 2317 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-29 01:37:53,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6533 states. [2023-11-29 01:37:53,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6533 to 6357. [2023-11-29 01:37:53,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6357 states, 6355 states have (on average 1.3413060582218725) internal successors, (8524), 6356 states have internal predecessors, (8524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:37:53,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6357 states to 6357 states and 8524 transitions. [2023-11-29 01:37:53,643 INFO L78 Accepts]: Start accepts. Automaton has 6357 states and 8524 transitions. Word has length 93 [2023-11-29 01:37:53,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:37:53,643 INFO L495 AbstractCegarLoop]: Abstraction has 6357 states and 8524 transitions. [2023-11-29 01:37:53,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 6.487179487179487) internal successors, (253), 38 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:37:53,643 INFO L276 IsEmpty]: Start isEmpty. Operand 6357 states and 8524 transitions. [2023-11-29 01:37:53,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-11-29 01:37:53,645 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:37:53,645 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:37:53,650 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bd1c8e1-fb3f-41e3-b7d6-2805e6282054/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-29 01:37:53,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bd1c8e1-fb3f-41e3-b7d6-2805e6282054/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-11-29 01:37:53,845 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:37:53,846 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:37:53,846 INFO L85 PathProgramCache]: Analyzing trace with hash -1951891590, now seen corresponding path program 1 times [2023-11-29 01:37:53,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:37:53,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671823774] [2023-11-29 01:37:53,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:37:53,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:37:53,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:37:54,922 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 23 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:37:54,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:37:54,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671823774] [2023-11-29 01:37:54,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671823774] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:37:54,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [246585373] [2023-11-29 01:37:54,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:37:54,923 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:37:54,923 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bd1c8e1-fb3f-41e3-b7d6-2805e6282054/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:37:54,924 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bd1c8e1-fb3f-41e3-b7d6-2805e6282054/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:37:54,928 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bd1c8e1-fb3f-41e3-b7d6-2805e6282054/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-29 01:37:55,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:37:55,078 INFO L262 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 30 conjunts are in the unsatisfiable core [2023-11-29 01:37:55,080 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:37:56,575 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 23 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:37:56,575 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:38:00,493 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 23 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:38:00,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [246585373] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:38:00,494 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:38:00,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 19] total 54 [2023-11-29 01:38:00,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477380444] [2023-11-29 01:38:00,494 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:38:00,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2023-11-29 01:38:00,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:38:00,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2023-11-29 01:38:00,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=258, Invalid=2604, Unknown=0, NotChecked=0, Total=2862 [2023-11-29 01:38:00,495 INFO L87 Difference]: Start difference. First operand 6357 states and 8524 transitions. Second operand has 54 states, 54 states have (on average 4.796296296296297) internal successors, (259), 54 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:38:19,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:38:19,083 INFO L93 Difference]: Finished difference Result 16069 states and 20337 transitions. [2023-11-29 01:38:19,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2023-11-29 01:38:19,084 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 4.796296296296297) internal successors, (259), 54 states have internal predecessors, (259), 0 states have call successors, (0), 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 95 [2023-11-29 01:38:19,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:38:19,095 INFO L225 Difference]: With dead ends: 16069 [2023-11-29 01:38:19,096 INFO L226 Difference]: Without dead ends: 14558 [2023-11-29 01:38:19,100 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 325 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9546 ImplicationChecksByTransitivity, 16.4s TimeCoverageRelationStatistics Valid=5460, Invalid=23270, Unknown=0, NotChecked=0, Total=28730 [2023-11-29 01:38:19,100 INFO L413 NwaCegarLoop]: 1575 mSDtfsCounter, 18452 mSDsluCounter, 24292 mSDsCounter, 0 mSdLazyCounter, 2627 mSolverCounterSat, 154 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18452 SdHoareTripleChecker+Valid, 25867 SdHoareTripleChecker+Invalid, 2781 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 154 IncrementalHoareTripleChecker+Valid, 2627 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-11-29 01:38:19,101 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18452 Valid, 25867 Invalid, 2781 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [154 Valid, 2627 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-11-29 01:38:19,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14558 states. [2023-11-29 01:38:19,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14558 to 7469. [2023-11-29 01:38:19,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7469 states, 7467 states have (on average 1.319673228873711) internal successors, (9854), 7468 states have internal predecessors, (9854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:38:19,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7469 states to 7469 states and 9854 transitions. [2023-11-29 01:38:19,926 INFO L78 Accepts]: Start accepts. Automaton has 7469 states and 9854 transitions. Word has length 95 [2023-11-29 01:38:19,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:38:19,926 INFO L495 AbstractCegarLoop]: Abstraction has 7469 states and 9854 transitions. [2023-11-29 01:38:19,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 4.796296296296297) internal successors, (259), 54 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:38:19,927 INFO L276 IsEmpty]: Start isEmpty. Operand 7469 states and 9854 transitions. [2023-11-29 01:38:19,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-11-29 01:38:19,929 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:38:19,930 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:38:19,935 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bd1c8e1-fb3f-41e3-b7d6-2805e6282054/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-11-29 01:38:20,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bd1c8e1-fb3f-41e3-b7d6-2805e6282054/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-11-29 01:38:20,130 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:38:20,131 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:38:20,131 INFO L85 PathProgramCache]: Analyzing trace with hash -861125406, now seen corresponding path program 1 times [2023-11-29 01:38:20,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:38:20,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753488138] [2023-11-29 01:38:20,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:38:20,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:38:20,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:38:21,246 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 32 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:38:21,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:38:21,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753488138] [2023-11-29 01:38:21,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753488138] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:38:21,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1319580200] [2023-11-29 01:38:21,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:38:21,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:38:21,247 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bd1c8e1-fb3f-41e3-b7d6-2805e6282054/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:38:21,248 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bd1c8e1-fb3f-41e3-b7d6-2805e6282054/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:38:21,249 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bd1c8e1-fb3f-41e3-b7d6-2805e6282054/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-29 01:38:21,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:38:21,368 INFO L262 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 35 conjunts are in the unsatisfiable core [2023-11-29 01:38:21,371 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:38:23,929 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 22 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:38:23,929 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:38:33,606 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 22 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:38:33,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1319580200] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:38:33,607 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:38:33,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 22, 22] total 61 [2023-11-29 01:38:33,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103426193] [2023-11-29 01:38:33,607 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:38:33,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2023-11-29 01:38:33,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:38:33,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2023-11-29 01:38:33,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=334, Invalid=3326, Unknown=0, NotChecked=0, Total=3660 [2023-11-29 01:38:33,609 INFO L87 Difference]: Start difference. First operand 7469 states and 9854 transitions. Second operand has 61 states, 61 states have (on average 4.295081967213115) internal successors, (262), 61 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:43:07,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:43:07,456 INFO L93 Difference]: Finished difference Result 20569 states and 25700 transitions. [2023-11-29 01:43:07,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 477 states. [2023-11-29 01:43:07,457 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 4.295081967213115) internal successors, (262), 61 states have internal predecessors, (262), 0 states have call successors, (0), 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 95 [2023-11-29 01:43:07,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:43:07,470 INFO L225 Difference]: With dead ends: 20569 [2023-11-29 01:43:07,470 INFO L226 Difference]: Without dead ends: 18803 [2023-11-29 01:43:07,483 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 678 GetRequests, 149 SyntacticMatches, 1 SemanticMatches, 528 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118355 ImplicationChecksByTransitivity, 264.6s TimeCoverageRelationStatistics Valid=26514, Invalid=253856, Unknown=0, NotChecked=0, Total=280370 [2023-11-29 01:43:07,484 INFO L413 NwaCegarLoop]: 1577 mSDtfsCounter, 24843 mSDsluCounter, 42987 mSDsCounter, 0 mSdLazyCounter, 4432 mSolverCounterSat, 290 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24843 SdHoareTripleChecker+Valid, 44564 SdHoareTripleChecker+Invalid, 4722 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 290 IncrementalHoareTripleChecker+Valid, 4432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.4s IncrementalHoareTripleChecker+Time [2023-11-29 01:43:07,484 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24843 Valid, 44564 Invalid, 4722 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [290 Valid, 4432 Invalid, 0 Unknown, 0 Unchecked, 9.4s Time] [2023-11-29 01:43:07,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18803 states. [2023-11-29 01:43:08,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18803 to 10442. [2023-11-29 01:43:08,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10442 states, 10440 states have (on average 1.286015325670498) internal successors, (13426), 10441 states have internal predecessors, (13426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:43:08,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10442 states to 10442 states and 13426 transitions. [2023-11-29 01:43:08,610 INFO L78 Accepts]: Start accepts. Automaton has 10442 states and 13426 transitions. Word has length 95 [2023-11-29 01:43:08,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:43:08,610 INFO L495 AbstractCegarLoop]: Abstraction has 10442 states and 13426 transitions. [2023-11-29 01:43:08,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 4.295081967213115) internal successors, (262), 61 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:43:08,611 INFO L276 IsEmpty]: Start isEmpty. Operand 10442 states and 13426 transitions. [2023-11-29 01:43:08,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-11-29 01:43:08,612 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:43:08,612 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:43:08,617 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bd1c8e1-fb3f-41e3-b7d6-2805e6282054/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-11-29 01:43:08,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bd1c8e1-fb3f-41e3-b7d6-2805e6282054/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-11-29 01:43:08,813 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:43:08,813 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:43:08,814 INFO L85 PathProgramCache]: Analyzing trace with hash 2045724958, now seen corresponding path program 1 times [2023-11-29 01:43:08,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:43:08,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710505953] [2023-11-29 01:43:08,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:43:08,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:43:08,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:43:10,389 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 31 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:43:10,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:43:10,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710505953] [2023-11-29 01:43:10,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710505953] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:43:10,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1459200606] [2023-11-29 01:43:10,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:43:10,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:43:10,390 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bd1c8e1-fb3f-41e3-b7d6-2805e6282054/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:43:10,391 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bd1c8e1-fb3f-41e3-b7d6-2805e6282054/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:43:10,391 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bd1c8e1-fb3f-41e3-b7d6-2805e6282054/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-29 01:43:10,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:43:10,491 INFO L262 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-29 01:43:10,493 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:43:12,255 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 13 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:43:12,256 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:43:15,316 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 13 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:43:15,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1459200606] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:43:15,316 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:43:15,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 18, 18] total 58 [2023-11-29 01:43:15,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021512172] [2023-11-29 01:43:15,317 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:43:15,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2023-11-29 01:43:15,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:43:15,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2023-11-29 01:43:15,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=3073, Unknown=0, NotChecked=0, Total=3306 [2023-11-29 01:43:15,318 INFO L87 Difference]: Start difference. First operand 10442 states and 13426 transitions. Second operand has 58 states, 58 states have (on average 4.672413793103448) internal successors, (271), 58 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:45:27,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:45:27,119 INFO L93 Difference]: Finished difference Result 29688 states and 36439 transitions. [2023-11-29 01:45:27,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 427 states. [2023-11-29 01:45:27,120 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 4.672413793103448) internal successors, (271), 58 states have internal predecessors, (271), 0 states have call successors, (0), 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 95 [2023-11-29 01:45:27,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:45:27,138 INFO L225 Difference]: With dead ends: 29688 [2023-11-29 01:45:27,138 INFO L226 Difference]: Without dead ends: 25320 [2023-11-29 01:45:27,151 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 640 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 481 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98087 ImplicationChecksByTransitivity, 118.8s TimeCoverageRelationStatistics Valid=26855, Invalid=205951, Unknown=0, NotChecked=0, Total=232806 [2023-11-29 01:45:27,152 INFO L413 NwaCegarLoop]: 1716 mSDtfsCounter, 24082 mSDsluCounter, 39338 mSDsCounter, 0 mSdLazyCounter, 7832 mSolverCounterSat, 457 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24082 SdHoareTripleChecker+Valid, 41054 SdHoareTripleChecker+Invalid, 8289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 457 IncrementalHoareTripleChecker+Valid, 7832 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:45:27,152 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24082 Valid, 41054 Invalid, 8289 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [457 Valid, 7832 Invalid, 0 Unknown, 0 Unchecked, 9.1s Time] [2023-11-29 01:45:27,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25320 states. [2023-11-29 01:45:29,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25320 to 11286. [2023-11-29 01:45:29,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11286 states, 11284 states have (on average 1.2772066643034385) internal successors, (14412), 11285 states have internal predecessors, (14412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:45:29,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11286 states to 11286 states and 14412 transitions. [2023-11-29 01:45:29,032 INFO L78 Accepts]: Start accepts. Automaton has 11286 states and 14412 transitions. Word has length 95 [2023-11-29 01:45:29,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:45:29,033 INFO L495 AbstractCegarLoop]: Abstraction has 11286 states and 14412 transitions. [2023-11-29 01:45:29,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 4.672413793103448) internal successors, (271), 58 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:45:29,033 INFO L276 IsEmpty]: Start isEmpty. Operand 11286 states and 14412 transitions. [2023-11-29 01:45:29,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-11-29 01:45:29,035 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:45:29,035 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:45:29,042 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bd1c8e1-fb3f-41e3-b7d6-2805e6282054/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-11-29 01:45:29,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bd1c8e1-fb3f-41e3-b7d6-2805e6282054/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-11-29 01:45:29,236 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:45:29,236 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:45:29,236 INFO L85 PathProgramCache]: Analyzing trace with hash 1075755614, now seen corresponding path program 1 times [2023-11-29 01:45:29,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:45:29,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326821287] [2023-11-29 01:45:29,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:45:29,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:45:29,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:45:30,803 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 19 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:45:30,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:45:30,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326821287] [2023-11-29 01:45:30,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326821287] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:45:30,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [294547224] [2023-11-29 01:45:30,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:45:30,804 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:45:30,804 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bd1c8e1-fb3f-41e3-b7d6-2805e6282054/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:45:30,805 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bd1c8e1-fb3f-41e3-b7d6-2805e6282054/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:45:30,806 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bd1c8e1-fb3f-41e3-b7d6-2805e6282054/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-29 01:45:30,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:45:30,907 INFO L262 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 41 conjunts are in the unsatisfiable core [2023-11-29 01:45:30,910 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:45:34,303 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 19 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:45:34,303 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:45:39,510 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 19 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:45:39,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [294547224] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:45:39,510 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:45:39,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 23, 23] total 64 [2023-11-29 01:45:39,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752059995] [2023-11-29 01:45:39,510 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:45:39,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2023-11-29 01:45:39,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:45:39,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2023-11-29 01:45:39,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=396, Invalid=3636, Unknown=0, NotChecked=0, Total=4032 [2023-11-29 01:45:39,512 INFO L87 Difference]: Start difference. First operand 11286 states and 14412 transitions. Second operand has 64 states, 64 states have (on average 4.21875) internal successors, (270), 64 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:47:05,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:47:05,392 INFO L93 Difference]: Finished difference Result 20897 states and 25912 transitions. [2023-11-29 01:47:05,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 231 states. [2023-11-29 01:47:05,393 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 4.21875) internal successors, (270), 64 states have internal predecessors, (270), 0 states have call successors, (0), 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 96 [2023-11-29 01:47:05,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:47:05,406 INFO L225 Difference]: With dead ends: 20897 [2023-11-29 01:47:05,406 INFO L226 Difference]: Without dead ends: 18073 [2023-11-29 01:47:05,413 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 436 GetRequests, 150 SyntacticMatches, 1 SemanticMatches, 285 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29564 ImplicationChecksByTransitivity, 79.0s TimeCoverageRelationStatistics Valid=11663, Invalid=70419, Unknown=0, NotChecked=0, Total=82082 [2023-11-29 01:47:05,414 INFO L413 NwaCegarLoop]: 1570 mSDtfsCounter, 17877 mSDsluCounter, 32854 mSDsCounter, 0 mSdLazyCounter, 3450 mSolverCounterSat, 229 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17877 SdHoareTripleChecker+Valid, 34424 SdHoareTripleChecker+Invalid, 3679 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 229 IncrementalHoareTripleChecker+Valid, 3450 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2023-11-29 01:47:05,414 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17877 Valid, 34424 Invalid, 3679 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [229 Valid, 3450 Invalid, 0 Unknown, 0 Unchecked, 6.5s Time] [2023-11-29 01:47:05,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18073 states. [2023-11-29 01:47:07,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18073 to 14744. [2023-11-29 01:47:07,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14744 states, 14742 states have (on average 1.2619047619047619) internal successors, (18603), 14743 states have internal predecessors, (18603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:47:07,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14744 states to 14744 states and 18603 transitions. [2023-11-29 01:47:07,925 INFO L78 Accepts]: Start accepts. Automaton has 14744 states and 18603 transitions. Word has length 96 [2023-11-29 01:47:07,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:47:07,925 INFO L495 AbstractCegarLoop]: Abstraction has 14744 states and 18603 transitions. [2023-11-29 01:47:07,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 4.21875) internal successors, (270), 64 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:47:07,925 INFO L276 IsEmpty]: Start isEmpty. Operand 14744 states and 18603 transitions. [2023-11-29 01:47:07,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-11-29 01:47:07,927 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:47:07,928 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2023-11-29 01:47:07,933 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bd1c8e1-fb3f-41e3-b7d6-2805e6282054/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-11-29 01:47:08,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bd1c8e1-fb3f-41e3-b7d6-2805e6282054/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-11-29 01:47:08,128 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:47:08,129 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:47:08,129 INFO L85 PathProgramCache]: Analyzing trace with hash -1300029024, now seen corresponding path program 1 times [2023-11-29 01:47:08,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:47:08,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704177440] [2023-11-29 01:47:08,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:47:08,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:47:08,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:47:09,417 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 19 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:47:09,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:47:09,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704177440] [2023-11-29 01:47:09,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704177440] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:47:09,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [237909942] [2023-11-29 01:47:09,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:47:09,418 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:47:09,418 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bd1c8e1-fb3f-41e3-b7d6-2805e6282054/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:47:09,419 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bd1c8e1-fb3f-41e3-b7d6-2805e6282054/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:47:09,420 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bd1c8e1-fb3f-41e3-b7d6-2805e6282054/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-29 01:47:09,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:47:09,533 INFO L262 TraceCheckSpWp]: Trace formula consists of 418 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-29 01:47:09,536 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:47:11,230 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 23 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:47:11,230 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:47:13,175 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 20 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:47:13,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [237909942] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:47:13,176 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:47:13,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 16, 15] total 45 [2023-11-29 01:47:13,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764105313] [2023-11-29 01:47:13,176 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:47:13,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2023-11-29 01:47:13,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:47:13,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2023-11-29 01:47:13,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=1802, Unknown=0, NotChecked=0, Total=1980 [2023-11-29 01:47:13,178 INFO L87 Difference]: Start difference. First operand 14744 states and 18603 transitions. Second operand has 45 states, 45 states have (on average 5.8) internal successors, (261), 45 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:47:42,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:47:42,548 INFO L93 Difference]: Finished difference Result 33616 states and 41441 transitions. [2023-11-29 01:47:42,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 170 states. [2023-11-29 01:47:42,549 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 5.8) internal successors, (261), 45 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2023-11-29 01:47:42,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:47:42,567 INFO L225 Difference]: With dead ends: 33616 [2023-11-29 01:47:42,568 INFO L226 Difference]: Without dead ends: 23017 [2023-11-29 01:47:42,578 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 380 GetRequests, 170 SyntacticMatches, 1 SemanticMatches, 209 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15308 ImplicationChecksByTransitivity, 24.3s TimeCoverageRelationStatistics Valid=7178, Invalid=37132, Unknown=0, NotChecked=0, Total=44310 [2023-11-29 01:47:42,578 INFO L413 NwaCegarLoop]: 1549 mSDtfsCounter, 24411 mSDsluCounter, 23813 mSDsCounter, 0 mSdLazyCounter, 2006 mSolverCounterSat, 212 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24411 SdHoareTripleChecker+Valid, 25362 SdHoareTripleChecker+Invalid, 2218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 212 IncrementalHoareTripleChecker+Valid, 2006 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:47:42,578 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24411 Valid, 25362 Invalid, 2218 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [212 Valid, 2006 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-11-29 01:47:42,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23017 states. [2023-11-29 01:47:46,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23017 to 20147. [2023-11-29 01:47:46,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20147 states, 20145 states have (on average 1.2462645817820799) internal successors, (25106), 20146 states have internal predecessors, (25106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:47:47,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20147 states to 20147 states and 25106 transitions. [2023-11-29 01:47:47,002 INFO L78 Accepts]: Start accepts. Automaton has 20147 states and 25106 transitions. Word has length 97 [2023-11-29 01:47:47,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:47:47,002 INFO L495 AbstractCegarLoop]: Abstraction has 20147 states and 25106 transitions. [2023-11-29 01:47:47,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 5.8) internal successors, (261), 45 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:47:47,002 INFO L276 IsEmpty]: Start isEmpty. Operand 20147 states and 25106 transitions. [2023-11-29 01:47:47,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-11-29 01:47:47,004 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:47:47,004 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2023-11-29 01:47:47,010 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bd1c8e1-fb3f-41e3-b7d6-2805e6282054/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-11-29 01:47:47,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bd1c8e1-fb3f-41e3-b7d6-2805e6282054/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:47:47,205 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:47:47,206 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:47:47,206 INFO L85 PathProgramCache]: Analyzing trace with hash -927858116, now seen corresponding path program 1 times [2023-11-29 01:47:47,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:47:47,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632189998] [2023-11-29 01:47:47,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:47:47,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:47:47,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:47:47,704 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 28 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:47:47,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:47:47,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632189998] [2023-11-29 01:47:47,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632189998] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:47:47,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1094034756] [2023-11-29 01:47:47,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:47:47,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:47:47,705 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bd1c8e1-fb3f-41e3-b7d6-2805e6282054/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:47:47,707 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bd1c8e1-fb3f-41e3-b7d6-2805e6282054/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:47:47,710 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bd1c8e1-fb3f-41e3-b7d6-2805e6282054/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-29 01:47:47,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:47:47,854 INFO L262 TraceCheckSpWp]: Trace formula consists of 418 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-29 01:47:47,857 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:47:49,406 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 30 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:47:49,407 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:47:51,589 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 31 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:47:51,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1094034756] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:47:51,589 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:47:51,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 16, 15] total 40 [2023-11-29 01:47:51,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400631845] [2023-11-29 01:47:51,589 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:47:51,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2023-11-29 01:47:51,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:47:51,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2023-11-29 01:47:51,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=1392, Unknown=0, NotChecked=0, Total=1560 [2023-11-29 01:47:51,591 INFO L87 Difference]: Start difference. First operand 20147 states and 25106 transitions. Second operand has 40 states, 40 states have (on average 6.375) internal successors, (255), 40 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:48:09,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:48:09,369 INFO L93 Difference]: Finished difference Result 58135 states and 71262 transitions. [2023-11-29 01:48:09,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2023-11-29 01:48:09,370 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 6.375) internal successors, (255), 40 states have internal predecessors, (255), 0 states have call successors, (0), 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 97 [2023-11-29 01:48:09,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:48:09,417 INFO L225 Difference]: With dead ends: 58135 [2023-11-29 01:48:09,417 INFO L226 Difference]: Without dead ends: 42769 [2023-11-29 01:48:09,436 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 169 SyntacticMatches, 1 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4367 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=2845, Invalid=11917, Unknown=0, NotChecked=0, Total=14762 [2023-11-29 01:48:09,436 INFO L413 NwaCegarLoop]: 1543 mSDtfsCounter, 28795 mSDsluCounter, 21104 mSDsCounter, 0 mSdLazyCounter, 2204 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28795 SdHoareTripleChecker+Valid, 22647 SdHoareTripleChecker+Invalid, 2295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 2204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-11-29 01:48:09,437 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28795 Valid, 22647 Invalid, 2295 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [91 Valid, 2204 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-11-29 01:48:09,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42769 states. [2023-11-29 01:48:14,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42769 to 23039. [2023-11-29 01:48:14,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23039 states, 23037 states have (on average 1.2445630941528845) internal successors, (28671), 23038 states have internal predecessors, (28671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:48:15,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23039 states to 23039 states and 28671 transitions. [2023-11-29 01:48:15,025 INFO L78 Accepts]: Start accepts. Automaton has 23039 states and 28671 transitions. Word has length 97 [2023-11-29 01:48:15,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:48:15,025 INFO L495 AbstractCegarLoop]: Abstraction has 23039 states and 28671 transitions. [2023-11-29 01:48:15,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 6.375) internal successors, (255), 40 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:48:15,025 INFO L276 IsEmpty]: Start isEmpty. Operand 23039 states and 28671 transitions. [2023-11-29 01:48:15,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-11-29 01:48:15,028 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:48:15,028 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:48:15,034 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bd1c8e1-fb3f-41e3-b7d6-2805e6282054/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-11-29 01:48:15,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bd1c8e1-fb3f-41e3-b7d6-2805e6282054/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:48:15,229 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:48:15,229 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:48:15,229 INFO L85 PathProgramCache]: Analyzing trace with hash -357546266, now seen corresponding path program 1 times [2023-11-29 01:48:15,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:48:15,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420997735] [2023-11-29 01:48:15,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:48:15,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:48:15,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:48:16,919 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 29 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:48:16,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:48:16,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420997735] [2023-11-29 01:48:16,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420997735] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:48:16,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1305739073] [2023-11-29 01:48:16,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:48:16,920 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:48:16,920 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bd1c8e1-fb3f-41e3-b7d6-2805e6282054/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:48:16,921 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bd1c8e1-fb3f-41e3-b7d6-2805e6282054/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:48:16,922 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bd1c8e1-fb3f-41e3-b7d6-2805e6282054/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-29 01:48:17,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:48:17,052 INFO L262 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 53 conjunts are in the unsatisfiable core [2023-11-29 01:48:17,054 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:48:22,227 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 29 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:48:22,227 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:48:31,666 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 19 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:48:31,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1305739073] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:48:31,666 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:48:31,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 26, 27] total 74 [2023-11-29 01:48:31,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886472337] [2023-11-29 01:48:31,667 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:48:31,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2023-11-29 01:48:31,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:48:31,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2023-11-29 01:48:31,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=570, Invalid=4832, Unknown=0, NotChecked=0, Total=5402 [2023-11-29 01:48:31,669 INFO L87 Difference]: Start difference. First operand 23039 states and 28671 transitions. Second operand has 74 states, 74 states have (on average 3.675675675675676) internal successors, (272), 74 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)