./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.4.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb0e2c12-1bd8-4d9e-95e0-bfb5209c0235/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb0e2c12-1bd8-4d9e-95e0-bfb5209c0235/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_bb0e2c12-1bd8-4d9e-95e0-bfb5209c0235/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb0e2c12-1bd8-4d9e-95e0-bfb5209c0235/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.4.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb0e2c12-1bd8-4d9e-95e0-bfb5209c0235/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_bb0e2c12-1bd8-4d9e-95e0-bfb5209c0235/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 6fd1b86eb4bd4da10127873e4ddea09cb0ce3be9adebe9545b8e8b0c5a6a02d7 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 05:28:20,416 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 05:28:20,487 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb0e2c12-1bd8-4d9e-95e0-bfb5209c0235/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 05:28:20,492 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 05:28:20,492 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 05:28:20,518 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 05:28:20,518 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 05:28:20,519 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 05:28:20,520 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 05:28:20,520 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 05:28:20,521 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 05:28:20,521 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 05:28:20,522 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 05:28:20,523 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 05:28:20,523 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 05:28:20,524 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 05:28:20,524 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 05:28:20,525 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 05:28:20,525 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 05:28:20,525 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 05:28:20,526 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 05:28:20,527 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 05:28:20,527 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 05:28:20,527 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 05:28:20,528 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 05:28:20,528 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 05:28:20,528 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 05:28:20,529 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 05:28:20,529 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 05:28:20,530 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 05:28:20,530 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 05:28:20,530 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 05:28:20,531 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 05:28:20,531 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 05:28:20,531 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 05:28:20,531 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 05:28:20,532 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 05:28:20,532 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 05:28:20,532 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 05:28:20,532 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 05:28:20,532 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 05:28:20,533 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 05:28:20,533 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_bb0e2c12-1bd8-4d9e-95e0-bfb5209c0235/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb0e2c12-1bd8-4d9e-95e0-bfb5209c0235/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6fd1b86eb4bd4da10127873e4ddea09cb0ce3be9adebe9545b8e8b0c5a6a02d7 [2023-11-29 05:28:20,761 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 05:28:20,782 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 05:28:20,785 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 05:28:20,786 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 05:28:20,787 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 05:28:20,788 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb0e2c12-1bd8-4d9e-95e0-bfb5209c0235/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.4.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c [2023-11-29 05:28:23,497 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 05:28:23,702 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 05:28:23,703 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb0e2c12-1bd8-4d9e-95e0-bfb5209c0235/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.4.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c [2023-11-29 05:28:23,714 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb0e2c12-1bd8-4d9e-95e0-bfb5209c0235/bin/uautomizer-verify-BQ2R08f2Ya/data/77f960ef1/061c8d5bf30c4f0e963d282a317e625f/FLAG045ceb9cb [2023-11-29 05:28:23,726 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb0e2c12-1bd8-4d9e-95e0-bfb5209c0235/bin/uautomizer-verify-BQ2R08f2Ya/data/77f960ef1/061c8d5bf30c4f0e963d282a317e625f [2023-11-29 05:28:23,729 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 05:28:23,730 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 05:28:23,731 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 05:28:23,732 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 05:28:23,736 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 05:28:23,737 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 05:28:23" (1/1) ... [2023-11-29 05:28:23,738 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b97cb78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:28:23, skipping insertion in model container [2023-11-29 05:28:23,738 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 05:28:23" (1/1) ... [2023-11-29 05:28:23,783 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 05:28:23,966 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_bb0e2c12-1bd8-4d9e-95e0-bfb5209c0235/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.4.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c[7806,7819] [2023-11-29 05:28:24,004 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 05:28:24,023 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 05:28:24,070 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_bb0e2c12-1bd8-4d9e-95e0-bfb5209c0235/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.4.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c[7806,7819] [2023-11-29 05:28:24,092 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 05:28:24,109 INFO L206 MainTranslator]: Completed translation [2023-11-29 05:28:24,110 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:28:24 WrapperNode [2023-11-29 05:28:24,110 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 05:28:24,111 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 05:28:24,111 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 05:28:24,111 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 05:28:24,117 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:28:24" (1/1) ... [2023-11-29 05:28:24,129 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:28:24" (1/1) ... [2023-11-29 05:28:24,165 INFO L138 Inliner]: procedures = 22, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 675 [2023-11-29 05:28:24,165 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 05:28:24,166 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 05:28:24,166 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 05:28:24,166 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 05:28:24,175 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:28:24" (1/1) ... [2023-11-29 05:28:24,175 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:28:24" (1/1) ... [2023-11-29 05:28:24,179 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:28:24" (1/1) ... [2023-11-29 05:28:24,198 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-11-29 05:28:24,199 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:28:24" (1/1) ... [2023-11-29 05:28:24,199 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:28:24" (1/1) ... [2023-11-29 05:28:24,210 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:28:24" (1/1) ... [2023-11-29 05:28:24,216 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:28:24" (1/1) ... [2023-11-29 05:28:24,219 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:28:24" (1/1) ... [2023-11-29 05:28:24,223 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:28:24" (1/1) ... [2023-11-29 05:28:24,228 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 05:28:24,229 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 05:28:24,229 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 05:28:24,229 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 05:28:24,230 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:28:24" (1/1) ... [2023-11-29 05:28:24,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 05:28:24,245 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb0e2c12-1bd8-4d9e-95e0-bfb5209c0235/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:28:24,258 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb0e2c12-1bd8-4d9e-95e0-bfb5209c0235/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 05:28:24,261 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb0e2c12-1bd8-4d9e-95e0-bfb5209c0235/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 05:28:24,287 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 05:28:24,288 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 05:28:24,288 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 05:28:24,288 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 05:28:24,413 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 05:28:24,414 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 05:28:24,948 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 05:28:24,991 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 05:28:24,991 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-29 05:28:24,992 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 05:28:24 BoogieIcfgContainer [2023-11-29 05:28:24,992 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 05:28:24,995 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 05:28:24,995 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 05:28:24,998 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 05:28:24,999 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 05:28:23" (1/3) ... [2023-11-29 05:28:24,999 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e120f34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 05:28:24, skipping insertion in model container [2023-11-29 05:28:24,999 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:28:24" (2/3) ... [2023-11-29 05:28:25,000 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e120f34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 05:28:25, skipping insertion in model container [2023-11-29 05:28:25,000 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 05:28:24" (3/3) ... [2023-11-29 05:28:25,001 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.4.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c [2023-11-29 05:28:25,017 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 05:28:25,018 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 05:28:25,067 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 05:28:25,074 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;@36d8506b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 05:28:25,074 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-29 05:28:25,079 INFO L276 IsEmpty]: Start isEmpty. Operand has 153 states, 145 states have (on average 1.7724137931034483) internal successors, (257), 152 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:28:25,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-11-29 05:28:25,091 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:28:25,091 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] [2023-11-29 05:28:25,092 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:28:25,097 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:28:25,098 INFO L85 PathProgramCache]: Analyzing trace with hash 1865519982, now seen corresponding path program 1 times [2023-11-29 05:28:25,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:28:25,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129889635] [2023-11-29 05:28:25,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:28:25,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:28:25,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:28:25,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:28:25,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:28:25,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129889635] [2023-11-29 05:28:25,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129889635] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:28:25,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:28:25,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:28:25,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955749160] [2023-11-29 05:28:25,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:28:25,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:28:25,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:28:25,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:28:25,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:28:25,508 INFO L87 Difference]: Start difference. First operand has 153 states, 145 states have (on average 1.7724137931034483) internal successors, (257), 152 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:28:25,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:28:25,587 INFO L93 Difference]: Finished difference Result 323 states and 523 transitions. [2023-11-29 05:28:25,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:28:25,590 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 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 61 [2023-11-29 05:28:25,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:28:25,601 INFO L225 Difference]: With dead ends: 323 [2023-11-29 05:28:25,601 INFO L226 Difference]: Without dead ends: 211 [2023-11-29 05:28:25,604 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:28:25,607 INFO L413 NwaCegarLoop]: 253 mSDtfsCounter, 149 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 424 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:28:25,608 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 424 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:28:25,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2023-11-29 05:28:25,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 209. [2023-11-29 05:28:25,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 208 states have (on average 1.5192307692307692) internal successors, (316), 208 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:28:25,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 316 transitions. [2023-11-29 05:28:25,655 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 316 transitions. Word has length 61 [2023-11-29 05:28:25,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:28:25,656 INFO L495 AbstractCegarLoop]: Abstraction has 209 states and 316 transitions. [2023-11-29 05:28:25,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:28:25,656 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 316 transitions. [2023-11-29 05:28:25,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-11-29 05:28:25,659 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:28:25,660 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] [2023-11-29 05:28:25,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 05:28:25,660 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:28:25,661 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:28:25,661 INFO L85 PathProgramCache]: Analyzing trace with hash 152055503, now seen corresponding path program 1 times [2023-11-29 05:28:25,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:28:25,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772706954] [2023-11-29 05:28:25,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:28:25,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:28:25,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:28:25,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:28:25,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:28:25,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772706954] [2023-11-29 05:28:25,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772706954] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:28:25,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:28:25,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:28:25,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218773046] [2023-11-29 05:28:25,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:28:25,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:28:25,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:28:25,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:28:25,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:28:25,812 INFO L87 Difference]: Start difference. First operand 209 states and 316 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:28:25,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:28:25,845 INFO L93 Difference]: Finished difference Result 499 states and 772 transitions. [2023-11-29 05:28:25,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:28:25,846 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 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 63 [2023-11-29 05:28:25,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:28:25,849 INFO L225 Difference]: With dead ends: 499 [2023-11-29 05:28:25,850 INFO L226 Difference]: Without dead ends: 346 [2023-11-29 05:28:25,851 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:28:25,853 INFO L413 NwaCegarLoop]: 212 mSDtfsCounter, 117 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 397 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:28:25,853 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 397 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:28:25,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2023-11-29 05:28:25,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 344. [2023-11-29 05:28:25,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 344 states, 343 states have (on average 1.5364431486880465) internal successors, (527), 343 states have internal predecessors, (527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:28:25,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 527 transitions. [2023-11-29 05:28:25,878 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 527 transitions. Word has length 63 [2023-11-29 05:28:25,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:28:25,879 INFO L495 AbstractCegarLoop]: Abstraction has 344 states and 527 transitions. [2023-11-29 05:28:25,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:28:25,879 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 527 transitions. [2023-11-29 05:28:25,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-11-29 05:28:25,883 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:28:25,883 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] [2023-11-29 05:28:25,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 05:28:25,884 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:28:25,885 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:28:25,885 INFO L85 PathProgramCache]: Analyzing trace with hash 2126698160, now seen corresponding path program 1 times [2023-11-29 05:28:25,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:28:25,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133914368] [2023-11-29 05:28:25,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:28:25,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:28:25,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:28:26,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:28:26,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:28:26,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133914368] [2023-11-29 05:28:26,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133914368] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:28:26,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:28:26,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:28:26,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951231849] [2023-11-29 05:28:26,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:28:26,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:28:26,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:28:26,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:28:26,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:28:26,007 INFO L87 Difference]: Start difference. First operand 344 states and 527 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:28:26,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:28:26,033 INFO L93 Difference]: Finished difference Result 888 states and 1377 transitions. [2023-11-29 05:28:26,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:28:26,034 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 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 65 [2023-11-29 05:28:26,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:28:26,038 INFO L225 Difference]: With dead ends: 888 [2023-11-29 05:28:26,039 INFO L226 Difference]: Without dead ends: 600 [2023-11-29 05:28:26,041 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:28:26,042 INFO L413 NwaCegarLoop]: 212 mSDtfsCounter, 111 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 398 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:28:26,043 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 398 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:28:26,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 600 states. [2023-11-29 05:28:26,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 600 to 598. [2023-11-29 05:28:26,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 598 states, 597 states have (on average 1.5393634840871022) internal successors, (919), 597 states have internal predecessors, (919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:28:26,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 598 states to 598 states and 919 transitions. [2023-11-29 05:28:26,067 INFO L78 Accepts]: Start accepts. Automaton has 598 states and 919 transitions. Word has length 65 [2023-11-29 05:28:26,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:28:26,068 INFO L495 AbstractCegarLoop]: Abstraction has 598 states and 919 transitions. [2023-11-29 05:28:26,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:28:26,068 INFO L276 IsEmpty]: Start isEmpty. Operand 598 states and 919 transitions. [2023-11-29 05:28:26,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-11-29 05:28:26,071 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:28:26,071 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:28:26,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 05:28:26,072 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:28:26,073 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:28:26,073 INFO L85 PathProgramCache]: Analyzing trace with hash 1914747537, now seen corresponding path program 1 times [2023-11-29 05:28:26,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:28:26,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471042808] [2023-11-29 05:28:26,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:28:26,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:28:26,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:28:26,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:28:26,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:28:26,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471042808] [2023-11-29 05:28:26,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471042808] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:28:26,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:28:26,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 05:28:26,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464626513] [2023-11-29 05:28:26,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:28:26,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 05:28:26,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:28:26,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 05:28:26,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 05:28:26,215 INFO L87 Difference]: Start difference. First operand 598 states and 919 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:28:26,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:28:26,393 INFO L93 Difference]: Finished difference Result 3056 states and 4781 transitions. [2023-11-29 05:28:26,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 05:28:26,394 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 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 67 [2023-11-29 05:28:26,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:28:26,405 INFO L225 Difference]: With dead ends: 3056 [2023-11-29 05:28:26,405 INFO L226 Difference]: Without dead ends: 2504 [2023-11-29 05:28:26,406 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-29 05:28:26,408 INFO L413 NwaCegarLoop]: 213 mSDtfsCounter, 809 mSDsluCounter, 1358 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 809 SdHoareTripleChecker+Valid, 1571 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 05:28:26,408 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [809 Valid, 1571 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 05:28:26,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2504 states. [2023-11-29 05:28:26,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2504 to 1098. [2023-11-29 05:28:26,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1098 states, 1097 states have (on average 1.5597082953509571) internal successors, (1711), 1097 states have internal predecessors, (1711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:28:26,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1098 states to 1098 states and 1711 transitions. [2023-11-29 05:28:26,441 INFO L78 Accepts]: Start accepts. Automaton has 1098 states and 1711 transitions. Word has length 67 [2023-11-29 05:28:26,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:28:26,441 INFO L495 AbstractCegarLoop]: Abstraction has 1098 states and 1711 transitions. [2023-11-29 05:28:26,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:28:26,442 INFO L276 IsEmpty]: Start isEmpty. Operand 1098 states and 1711 transitions. [2023-11-29 05:28:26,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-11-29 05:28:26,443 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:28:26,443 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:28:26,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 05:28:26,443 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:28:26,444 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:28:26,444 INFO L85 PathProgramCache]: Analyzing trace with hash -834872683, now seen corresponding path program 1 times [2023-11-29 05:28:26,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:28:26,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16253100] [2023-11-29 05:28:26,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:28:26,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:28:26,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:28:26,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:28:26,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:28:26,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16253100] [2023-11-29 05:28:26,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16253100] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:28:26,544 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:28:26,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 05:28:26,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492313424] [2023-11-29 05:28:26,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:28:26,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:28:26,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:28:26,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:28:26,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 05:28:26,547 INFO L87 Difference]: Start difference. First operand 1098 states and 1711 transitions. Second operand has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:28:26,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:28:26,622 INFO L93 Difference]: Finished difference Result 4004 states and 6278 transitions. [2023-11-29 05:28:26,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 05:28:26,623 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2023-11-29 05:28:26,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:28:26,636 INFO L225 Difference]: With dead ends: 4004 [2023-11-29 05:28:26,636 INFO L226 Difference]: Without dead ends: 2962 [2023-11-29 05:28:26,638 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 05:28:26,639 INFO L413 NwaCegarLoop]: 219 mSDtfsCounter, 406 mSDsluCounter, 520 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 406 SdHoareTripleChecker+Valid, 739 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:28:26,639 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [406 Valid, 739 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:28:26,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2962 states. [2023-11-29 05:28:26,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2962 to 2018. [2023-11-29 05:28:26,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2018 states, 2017 states have (on average 1.5587506197322756) internal successors, (3144), 2017 states have internal predecessors, (3144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:28:26,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2018 states to 2018 states and 3144 transitions. [2023-11-29 05:28:26,684 INFO L78 Accepts]: Start accepts. Automaton has 2018 states and 3144 transitions. Word has length 68 [2023-11-29 05:28:26,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:28:26,684 INFO L495 AbstractCegarLoop]: Abstraction has 2018 states and 3144 transitions. [2023-11-29 05:28:26,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:28:26,684 INFO L276 IsEmpty]: Start isEmpty. Operand 2018 states and 3144 transitions. [2023-11-29 05:28:26,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-11-29 05:28:26,686 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:28:26,686 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:28:26,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 05:28:26,686 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:28:26,687 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:28:26,687 INFO L85 PathProgramCache]: Analyzing trace with hash 1554445324, now seen corresponding path program 1 times [2023-11-29 05:28:26,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:28:26,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163943081] [2023-11-29 05:28:26,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:28:26,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:28:26,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:28:26,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:28:26,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:28:26,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163943081] [2023-11-29 05:28:26,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163943081] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:28:26,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:28:26,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:28:26,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946338548] [2023-11-29 05:28:26,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:28:26,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:28:26,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:28:26,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:28:26,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:28:26,740 INFO L87 Difference]: Start difference. First operand 2018 states and 3144 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:28:26,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:28:26,773 INFO L93 Difference]: Finished difference Result 4817 states and 7515 transitions. [2023-11-29 05:28:26,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:28:26,774 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 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 69 [2023-11-29 05:28:26,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:28:26,787 INFO L225 Difference]: With dead ends: 4817 [2023-11-29 05:28:26,787 INFO L226 Difference]: Without dead ends: 2855 [2023-11-29 05:28:26,790 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:28:26,791 INFO L413 NwaCegarLoop]: 309 mSDtfsCounter, 124 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 490 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:28:26,791 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 490 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:28:26,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2855 states. [2023-11-29 05:28:26,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2855 to 2853. [2023-11-29 05:28:26,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2853 states, 2852 states have (on average 1.5525946704067322) internal successors, (4428), 2852 states have internal predecessors, (4428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:28:26,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2853 states to 2853 states and 4428 transitions. [2023-11-29 05:28:26,844 INFO L78 Accepts]: Start accepts. Automaton has 2853 states and 4428 transitions. Word has length 69 [2023-11-29 05:28:26,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:28:26,844 INFO L495 AbstractCegarLoop]: Abstraction has 2853 states and 4428 transitions. [2023-11-29 05:28:26,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:28:26,844 INFO L276 IsEmpty]: Start isEmpty. Operand 2853 states and 4428 transitions. [2023-11-29 05:28:26,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-11-29 05:28:26,845 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:28:26,846 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:28:26,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 05:28:26,846 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:28:26,846 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:28:26,847 INFO L85 PathProgramCache]: Analyzing trace with hash 867555242, now seen corresponding path program 1 times [2023-11-29 05:28:26,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:28:26,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775903308] [2023-11-29 05:28:26,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:28:26,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:28:26,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:28:26,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:28:26,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:28:26,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775903308] [2023-11-29 05:28:26,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775903308] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:28:26,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:28:26,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:28:26,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096708887] [2023-11-29 05:28:26,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:28:26,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:28:26,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:28:26,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:28:26,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:28:26,897 INFO L87 Difference]: Start difference. First operand 2853 states and 4428 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:28:26,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:28:26,932 INFO L93 Difference]: Finished difference Result 5485 states and 8515 transitions. [2023-11-29 05:28:26,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:28:26,932 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 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 69 [2023-11-29 05:28:26,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:28:26,948 INFO L225 Difference]: With dead ends: 5485 [2023-11-29 05:28:26,948 INFO L226 Difference]: Without dead ends: 3913 [2023-11-29 05:28:26,950 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:28:26,951 INFO L413 NwaCegarLoop]: 290 mSDtfsCounter, 118 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 472 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:28:26,951 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 472 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:28:26,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3913 states. [2023-11-29 05:28:27,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3913 to 3911. [2023-11-29 05:28:27,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3911 states, 3910 states have (on average 1.5381074168797955) internal successors, (6014), 3910 states have internal predecessors, (6014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:28:27,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3911 states to 3911 states and 6014 transitions. [2023-11-29 05:28:27,057 INFO L78 Accepts]: Start accepts. Automaton has 3911 states and 6014 transitions. Word has length 69 [2023-11-29 05:28:27,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:28:27,057 INFO L495 AbstractCegarLoop]: Abstraction has 3911 states and 6014 transitions. [2023-11-29 05:28:27,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:28:27,057 INFO L276 IsEmpty]: Start isEmpty. Operand 3911 states and 6014 transitions. [2023-11-29 05:28:27,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-11-29 05:28:27,058 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:28:27,058 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:28:27,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-29 05:28:27,059 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:28:27,059 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:28:27,059 INFO L85 PathProgramCache]: Analyzing trace with hash -73418808, now seen corresponding path program 1 times [2023-11-29 05:28:27,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:28:27,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270729695] [2023-11-29 05:28:27,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:28:27,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:28:27,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:28:27,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:28:27,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:28:27,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270729695] [2023-11-29 05:28:27,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270729695] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:28:27,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:28:27,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:28:27,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626576763] [2023-11-29 05:28:27,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:28:27,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:28:27,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:28:27,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:28:27,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:28:27,124 INFO L87 Difference]: Start difference. First operand 3911 states and 6014 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:28:27,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:28:27,172 INFO L93 Difference]: Finished difference Result 7417 states and 11399 transitions. [2023-11-29 05:28:27,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:28:27,172 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 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 69 [2023-11-29 05:28:27,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:28:27,193 INFO L225 Difference]: With dead ends: 7417 [2023-11-29 05:28:27,193 INFO L226 Difference]: Without dead ends: 5276 [2023-11-29 05:28:27,196 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:28:27,197 INFO L413 NwaCegarLoop]: 266 mSDtfsCounter, 112 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 449 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:28:27,197 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 449 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:28:27,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5276 states. [2023-11-29 05:28:27,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5276 to 5274. [2023-11-29 05:28:27,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5274 states, 5273 states have (on average 1.5200075858145268) internal successors, (8015), 5273 states have internal predecessors, (8015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:28:27,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5274 states to 5274 states and 8015 transitions. [2023-11-29 05:28:27,287 INFO L78 Accepts]: Start accepts. Automaton has 5274 states and 8015 transitions. Word has length 69 [2023-11-29 05:28:27,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:28:27,288 INFO L495 AbstractCegarLoop]: Abstraction has 5274 states and 8015 transitions. [2023-11-29 05:28:27,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:28:27,288 INFO L276 IsEmpty]: Start isEmpty. Operand 5274 states and 8015 transitions. [2023-11-29 05:28:27,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-11-29 05:28:27,288 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:28:27,288 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:28:27,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-29 05:28:27,289 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:28:27,289 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:28:27,289 INFO L85 PathProgramCache]: Analyzing trace with hash 505448394, now seen corresponding path program 1 times [2023-11-29 05:28:27,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:28:27,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620036530] [2023-11-29 05:28:27,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:28:27,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:28:27,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:28:27,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:28:27,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:28:27,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620036530] [2023-11-29 05:28:27,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620036530] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:28:27,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:28:27,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 05:28:27,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438662659] [2023-11-29 05:28:27,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:28:27,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 05:28:27,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:28:27,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 05:28:27,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 05:28:27,511 INFO L87 Difference]: Start difference. First operand 5274 states and 8015 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:28:27,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:28:27,582 INFO L93 Difference]: Finished difference Result 9346 states and 14127 transitions. [2023-11-29 05:28:27,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 05:28:27,584 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2023-11-29 05:28:27,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:28:27,621 INFO L225 Difference]: With dead ends: 9346 [2023-11-29 05:28:27,622 INFO L226 Difference]: Without dead ends: 9344 [2023-11-29 05:28:27,624 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-29 05:28:27,625 INFO L413 NwaCegarLoop]: 298 mSDtfsCounter, 260 mSDsluCounter, 722 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 260 SdHoareTripleChecker+Valid, 1020 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:28:27,626 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [260 Valid, 1020 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:28:27,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9344 states. [2023-11-29 05:28:27,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9344 to 5396. [2023-11-29 05:28:27,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5396 states, 5395 states have (on average 1.5032437442075997) internal successors, (8110), 5395 states have internal predecessors, (8110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:28:27,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5396 states to 5396 states and 8110 transitions. [2023-11-29 05:28:27,750 INFO L78 Accepts]: Start accepts. Automaton has 5396 states and 8110 transitions. Word has length 76 [2023-11-29 05:28:27,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:28:27,750 INFO L495 AbstractCegarLoop]: Abstraction has 5396 states and 8110 transitions. [2023-11-29 05:28:27,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:28:27,750 INFO L276 IsEmpty]: Start isEmpty. Operand 5396 states and 8110 transitions. [2023-11-29 05:28:27,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-11-29 05:28:27,751 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:28:27,752 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:28:27,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-29 05:28:27,752 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:28:27,752 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:28:27,752 INFO L85 PathProgramCache]: Analyzing trace with hash -1515871777, now seen corresponding path program 1 times [2023-11-29 05:28:27,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:28:27,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689465512] [2023-11-29 05:28:27,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:28:27,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:28:27,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:28:27,871 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 05:28:27,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:28:27,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689465512] [2023-11-29 05:28:27,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689465512] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:28:27,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:28:27,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 05:28:27,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990241640] [2023-11-29 05:28:27,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:28:27,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 05:28:27,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:28:27,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 05:28:27,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 05:28:27,873 INFO L87 Difference]: Start difference. First operand 5396 states and 8110 transitions. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:28:28,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:28:28,007 INFO L93 Difference]: Finished difference Result 15583 states and 23433 transitions. [2023-11-29 05:28:28,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 05:28:28,008 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2023-11-29 05:28:28,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:28:28,026 INFO L225 Difference]: With dead ends: 15583 [2023-11-29 05:28:28,026 INFO L226 Difference]: Without dead ends: 12809 [2023-11-29 05:28:28,030 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 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 05:28:28,031 INFO L413 NwaCegarLoop]: 342 mSDtfsCounter, 520 mSDsluCounter, 648 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 520 SdHoareTripleChecker+Valid, 990 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:28:28,031 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [520 Valid, 990 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:28:28,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12809 states. [2023-11-29 05:28:28,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12809 to 9040. [2023-11-29 05:28:28,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9040 states, 9039 states have (on average 1.4987277353689568) internal successors, (13547), 9039 states have internal predecessors, (13547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:28:28,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9040 states to 9040 states and 13547 transitions. [2023-11-29 05:28:28,191 INFO L78 Accepts]: Start accepts. Automaton has 9040 states and 13547 transitions. Word has length 100 [2023-11-29 05:28:28,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:28:28,191 INFO L495 AbstractCegarLoop]: Abstraction has 9040 states and 13547 transitions. [2023-11-29 05:28:28,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:28:28,192 INFO L276 IsEmpty]: Start isEmpty. Operand 9040 states and 13547 transitions. [2023-11-29 05:28:28,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-11-29 05:28:28,193 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:28:28,193 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:28:28,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-29 05:28:28,194 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:28:28,194 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:28:28,194 INFO L85 PathProgramCache]: Analyzing trace with hash 2092205437, now seen corresponding path program 1 times [2023-11-29 05:28:28,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:28:28,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522976463] [2023-11-29 05:28:28,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:28:28,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:28:28,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:28:28,307 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-29 05:28:28,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:28:28,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522976463] [2023-11-29 05:28:28,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522976463] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:28:28,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:28:28,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 05:28:28,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682200995] [2023-11-29 05:28:28,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:28:28,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 05:28:28,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:28:28,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 05:28:28,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 05:28:28,309 INFO L87 Difference]: Start difference. First operand 9040 states and 13547 transitions. Second operand has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:28:28,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:28:28,438 INFO L93 Difference]: Finished difference Result 18767 states and 28217 transitions. [2023-11-29 05:28:28,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 05:28:28,438 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2023-11-29 05:28:28,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:28:28,458 INFO L225 Difference]: With dead ends: 18767 [2023-11-29 05:28:28,458 INFO L226 Difference]: Without dead ends: 15195 [2023-11-29 05:28:28,464 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 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 05:28:28,465 INFO L413 NwaCegarLoop]: 347 mSDtfsCounter, 517 mSDsluCounter, 616 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 517 SdHoareTripleChecker+Valid, 963 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 05:28:28,465 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [517 Valid, 963 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 05:28:28,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15195 states. [2023-11-29 05:28:28,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15195 to 13125. [2023-11-29 05:28:28,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13125 states, 13124 states have (on average 1.4962663822005486) internal successors, (19637), 13124 states have internal predecessors, (19637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:28:28,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13125 states to 13125 states and 19637 transitions. [2023-11-29 05:28:28,712 INFO L78 Accepts]: Start accepts. Automaton has 13125 states and 19637 transitions. Word has length 100 [2023-11-29 05:28:28,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:28:28,712 INFO L495 AbstractCegarLoop]: Abstraction has 13125 states and 19637 transitions. [2023-11-29 05:28:28,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:28:28,713 INFO L276 IsEmpty]: Start isEmpty. Operand 13125 states and 19637 transitions. [2023-11-29 05:28:28,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-11-29 05:28:28,714 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:28:28,715 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:28:28,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-29 05:28:28,715 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:28:28,715 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:28:28,715 INFO L85 PathProgramCache]: Analyzing trace with hash 1151231387, now seen corresponding path program 1 times [2023-11-29 05:28:28,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:28:28,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684695195] [2023-11-29 05:28:28,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:28:28,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:28:28,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:28:28,857 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-29 05:28:28,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:28:28,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684695195] [2023-11-29 05:28:28,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684695195] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:28:28,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:28:28,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 05:28:28,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861350178] [2023-11-29 05:28:28,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:28:28,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 05:28:28,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:28:28,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 05:28:28,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 05:28:28,859 INFO L87 Difference]: Start difference. First operand 13125 states and 19637 transitions. Second operand has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:28:28,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:28:28,997 INFO L93 Difference]: Finished difference Result 20793 states and 31233 transitions. [2023-11-29 05:28:28,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 05:28:28,997 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2023-11-29 05:28:28,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:28:29,019 INFO L225 Difference]: With dead ends: 20793 [2023-11-29 05:28:29,019 INFO L226 Difference]: Without dead ends: 17221 [2023-11-29 05:28:29,026 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 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 05:28:29,027 INFO L413 NwaCegarLoop]: 349 mSDtfsCounter, 523 mSDsluCounter, 710 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 523 SdHoareTripleChecker+Valid, 1059 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 05:28:29,027 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [523 Valid, 1059 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 05:28:29,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17221 states. [2023-11-29 05:28:29,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17221 to 15779. [2023-11-29 05:28:29,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15779 states, 15778 states have (on average 1.4959437191025478) internal successors, (23603), 15778 states have internal predecessors, (23603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:28:29,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15779 states to 15779 states and 23603 transitions. [2023-11-29 05:28:29,253 INFO L78 Accepts]: Start accepts. Automaton has 15779 states and 23603 transitions. Word has length 100 [2023-11-29 05:28:29,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:28:29,253 INFO L495 AbstractCegarLoop]: Abstraction has 15779 states and 23603 transitions. [2023-11-29 05:28:29,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:28:29,253 INFO L276 IsEmpty]: Start isEmpty. Operand 15779 states and 23603 transitions. [2023-11-29 05:28:29,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-11-29 05:28:29,255 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:28:29,255 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:28:29,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-29 05:28:29,255 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:28:29,256 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:28:29,256 INFO L85 PathProgramCache]: Analyzing trace with hash 190110983, now seen corresponding path program 1 times [2023-11-29 05:28:29,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:28:29,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228862131] [2023-11-29 05:28:29,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:28:29,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:28:29,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:28:29,359 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 05:28:29,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:28:29,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228862131] [2023-11-29 05:28:29,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228862131] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:28:29,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:28:29,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 05:28:29,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330364177] [2023-11-29 05:28:29,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:28:29,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:28:29,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:28:29,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:28:29,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 05:28:29,361 INFO L87 Difference]: Start difference. First operand 15779 states and 23603 transitions. Second operand has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:28:29,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:28:29,498 INFO L93 Difference]: Finished difference Result 26067 states and 39178 transitions. [2023-11-29 05:28:29,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 05:28:29,499 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2023-11-29 05:28:29,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:28:29,537 INFO L225 Difference]: With dead ends: 26067 [2023-11-29 05:28:29,537 INFO L226 Difference]: Without dead ends: 20853 [2023-11-29 05:28:29,545 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 05:28:29,546 INFO L413 NwaCegarLoop]: 341 mSDtfsCounter, 225 mSDsluCounter, 408 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 749 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:28:29,547 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [225 Valid, 749 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:28:29,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20853 states. [2023-11-29 05:28:29,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20853 to 19289. [2023-11-29 05:28:29,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19289 states, 19288 states have (on average 1.4945562007465782) internal successors, (28827), 19288 states have internal predecessors, (28827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:28:29,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19289 states to 19289 states and 28827 transitions. [2023-11-29 05:28:29,846 INFO L78 Accepts]: Start accepts. Automaton has 19289 states and 28827 transitions. Word has length 101 [2023-11-29 05:28:29,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:28:29,846 INFO L495 AbstractCegarLoop]: Abstraction has 19289 states and 28827 transitions. [2023-11-29 05:28:29,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:28:29,847 INFO L276 IsEmpty]: Start isEmpty. Operand 19289 states and 28827 transitions. [2023-11-29 05:28:29,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-11-29 05:28:29,849 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:28:29,849 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:28:29,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-29 05:28:29,850 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:28:29,850 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:28:29,850 INFO L85 PathProgramCache]: Analyzing trace with hash -158576971, now seen corresponding path program 1 times [2023-11-29 05:28:29,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:28:29,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251247125] [2023-11-29 05:28:29,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:28:29,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:28:29,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:28:30,015 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 05:28:30,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:28:30,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251247125] [2023-11-29 05:28:30,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251247125] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:28:30,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:28:30,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:28:30,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584615560] [2023-11-29 05:28:30,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:28:30,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:28:30,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:28:30,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:28:30,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:28:30,018 INFO L87 Difference]: Start difference. First operand 19289 states and 28827 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:28:30,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:28:30,191 INFO L93 Difference]: Finished difference Result 43702 states and 65411 transitions. [2023-11-29 05:28:30,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:28:30,192 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2023-11-29 05:28:30,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:28:30,262 INFO L225 Difference]: With dead ends: 43702 [2023-11-29 05:28:30,263 INFO L226 Difference]: Without dead ends: 33433 [2023-11-29 05:28:30,282 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:28:30,283 INFO L413 NwaCegarLoop]: 204 mSDtfsCounter, 102 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 387 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:28:30,283 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 387 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:28:30,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33433 states. [2023-11-29 05:28:30,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33433 to 33364. [2023-11-29 05:28:30,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33364 states, 33363 states have (on average 1.4916224560141473) internal successors, (49765), 33363 states have internal predecessors, (49765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:28:30,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33364 states to 33364 states and 49765 transitions. [2023-11-29 05:28:30,977 INFO L78 Accepts]: Start accepts. Automaton has 33364 states and 49765 transitions. Word has length 101 [2023-11-29 05:28:30,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:28:30,977 INFO L495 AbstractCegarLoop]: Abstraction has 33364 states and 49765 transitions. [2023-11-29 05:28:30,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:28:30,978 INFO L276 IsEmpty]: Start isEmpty. Operand 33364 states and 49765 transitions. [2023-11-29 05:28:30,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-11-29 05:28:30,980 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:28:30,981 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:28:30,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-29 05:28:30,981 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:28:30,981 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:28:30,981 INFO L85 PathProgramCache]: Analyzing trace with hash -1717689480, now seen corresponding path program 1 times [2023-11-29 05:28:30,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:28:30,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118140996] [2023-11-29 05:28:30,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:28:30,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:28:31,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:28:31,145 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:28:31,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:28:31,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118140996] [2023-11-29 05:28:31,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118140996] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:28:31,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:28:31,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:28:31,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979734479] [2023-11-29 05:28:31,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:28:31,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:28:31,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:28:31,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:28:31,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:28:31,147 INFO L87 Difference]: Start difference. First operand 33364 states and 49765 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:28:31,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:28:31,307 INFO L93 Difference]: Finished difference Result 57820 states and 86317 transitions. [2023-11-29 05:28:31,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:28:31,307 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 102 [2023-11-29 05:28:31,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:28:31,445 INFO L225 Difference]: With dead ends: 57820 [2023-11-29 05:28:31,445 INFO L226 Difference]: Without dead ends: 24546 [2023-11-29 05:28:31,470 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:28:31,470 INFO L413 NwaCegarLoop]: 272 mSDtfsCounter, 86 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 468 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:28:31,471 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 468 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:28:31,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24546 states. [2023-11-29 05:28:31,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24546 to 24331. [2023-11-29 05:28:31,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24331 states, 24330 states have (on average 1.4838060008220304) internal successors, (36101), 24330 states have internal predecessors, (36101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:28:31,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24331 states to 24331 states and 36101 transitions. [2023-11-29 05:28:31,885 INFO L78 Accepts]: Start accepts. Automaton has 24331 states and 36101 transitions. Word has length 102 [2023-11-29 05:28:31,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:28:31,885 INFO L495 AbstractCegarLoop]: Abstraction has 24331 states and 36101 transitions. [2023-11-29 05:28:31,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:28:31,886 INFO L276 IsEmpty]: Start isEmpty. Operand 24331 states and 36101 transitions. [2023-11-29 05:28:31,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-11-29 05:28:31,888 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:28:31,888 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:28:31,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-29 05:28:31,889 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:28:31,889 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:28:31,889 INFO L85 PathProgramCache]: Analyzing trace with hash 1636303766, now seen corresponding path program 1 times [2023-11-29 05:28:31,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:28:31,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88191413] [2023-11-29 05:28:31,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:28:31,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:28:31,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:28:32,069 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:28:32,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:28:32,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88191413] [2023-11-29 05:28:32,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88191413] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:28:32,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:28:32,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:28:32,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651789122] [2023-11-29 05:28:32,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:28:32,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:28:32,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:28:32,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:28:32,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:28:32,071 INFO L87 Difference]: Start difference. First operand 24331 states and 36101 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:28:32,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:28:32,192 INFO L93 Difference]: Finished difference Result 32855 states and 48767 transitions. [2023-11-29 05:28:32,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:28:32,193 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 102 [2023-11-29 05:28:32,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:28:32,209 INFO L225 Difference]: With dead ends: 32855 [2023-11-29 05:28:32,210 INFO L226 Difference]: Without dead ends: 8615 [2023-11-29 05:28:32,222 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:28:32,223 INFO L413 NwaCegarLoop]: 247 mSDtfsCounter, 73 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 419 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:28:32,223 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 419 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:28:32,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8615 states. [2023-11-29 05:28:32,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8615 to 8545. [2023-11-29 05:28:32,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8545 states, 8544 states have (on average 1.475187265917603) internal successors, (12604), 8544 states have internal predecessors, (12604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:28:32,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8545 states to 8545 states and 12604 transitions. [2023-11-29 05:28:32,382 INFO L78 Accepts]: Start accepts. Automaton has 8545 states and 12604 transitions. Word has length 102 [2023-11-29 05:28:32,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:28:32,383 INFO L495 AbstractCegarLoop]: Abstraction has 8545 states and 12604 transitions. [2023-11-29 05:28:32,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:28:32,383 INFO L276 IsEmpty]: Start isEmpty. Operand 8545 states and 12604 transitions. [2023-11-29 05:28:32,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-11-29 05:28:32,385 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:28:32,385 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:28:32,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-29 05:28:32,386 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:28:32,386 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:28:32,386 INFO L85 PathProgramCache]: Analyzing trace with hash -1335068748, now seen corresponding path program 1 times [2023-11-29 05:28:32,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:28:32,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277817166] [2023-11-29 05:28:32,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:28:32,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:28:32,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:28:32,571 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:28:32,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:28:32,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277817166] [2023-11-29 05:28:32,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277817166] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:28:32,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:28:32,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:28:32,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980313938] [2023-11-29 05:28:32,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:28:32,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:28:32,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:28:32,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:28:32,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:28:32,573 INFO L87 Difference]: Start difference. First operand 8545 states and 12604 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:28:32,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:28:32,612 INFO L93 Difference]: Finished difference Result 12900 states and 19045 transitions. [2023-11-29 05:28:32,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:28:32,613 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 102 [2023-11-29 05:28:32,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:28:32,620 INFO L225 Difference]: With dead ends: 12900 [2023-11-29 05:28:32,620 INFO L226 Difference]: Without dead ends: 4446 [2023-11-29 05:28:32,624 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:28:32,625 INFO L413 NwaCegarLoop]: 222 mSDtfsCounter, 60 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 370 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:28:32,625 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 370 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:28:32,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4446 states. [2023-11-29 05:28:32,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4446 to 4296. [2023-11-29 05:28:32,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4296 states, 4295 states have (on average 1.4775320139697323) internal successors, (6346), 4295 states have internal predecessors, (6346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:28:32,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4296 states to 4296 states and 6346 transitions. [2023-11-29 05:28:32,682 INFO L78 Accepts]: Start accepts. Automaton has 4296 states and 6346 transitions. Word has length 102 [2023-11-29 05:28:32,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:28:32,682 INFO L495 AbstractCegarLoop]: Abstraction has 4296 states and 6346 transitions. [2023-11-29 05:28:32,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:28:32,682 INFO L276 IsEmpty]: Start isEmpty. Operand 4296 states and 6346 transitions. [2023-11-29 05:28:32,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-11-29 05:28:32,684 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:28:32,684 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:28:32,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-29 05:28:32,684 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:28:32,684 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:28:32,684 INFO L85 PathProgramCache]: Analyzing trace with hash -1753216283, now seen corresponding path program 1 times [2023-11-29 05:28:32,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:28:32,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353133089] [2023-11-29 05:28:32,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:28:32,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:28:32,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:28:33,016 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 05:28:33,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:28:33,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353133089] [2023-11-29 05:28:33,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353133089] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:28:33,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:28:33,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 05:28:33,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644838809] [2023-11-29 05:28:33,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:28:33,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:28:33,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:28:33,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:28:33,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 05:28:33,018 INFO L87 Difference]: Start difference. First operand 4296 states and 6346 transitions. Second operand has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:28:33,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:28:33,084 INFO L93 Difference]: Finished difference Result 14600 states and 21452 transitions. [2023-11-29 05:28:33,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 05:28:33,085 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2023-11-29 05:28:33,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:28:33,098 INFO L225 Difference]: With dead ends: 14600 [2023-11-29 05:28:33,098 INFO L226 Difference]: Without dead ends: 10395 [2023-11-29 05:28:33,102 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 05:28:33,103 INFO L413 NwaCegarLoop]: 245 mSDtfsCounter, 392 mSDsluCounter, 348 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 392 SdHoareTripleChecker+Valid, 593 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:28:33,103 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [392 Valid, 593 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:28:33,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10395 states. [2023-11-29 05:28:33,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10395 to 8468. [2023-11-29 05:28:33,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8468 states, 8467 states have (on average 1.473130979095311) internal successors, (12473), 8467 states have internal predecessors, (12473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:28:33,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8468 states to 8468 states and 12473 transitions. [2023-11-29 05:28:33,234 INFO L78 Accepts]: Start accepts. Automaton has 8468 states and 12473 transitions. Word has length 103 [2023-11-29 05:28:33,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:28:33,234 INFO L495 AbstractCegarLoop]: Abstraction has 8468 states and 12473 transitions. [2023-11-29 05:28:33,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:28:33,235 INFO L276 IsEmpty]: Start isEmpty. Operand 8468 states and 12473 transitions. [2023-11-29 05:28:33,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-11-29 05:28:33,236 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:28:33,236 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:28:33,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-29 05:28:33,237 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:28:33,237 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:28:33,237 INFO L85 PathProgramCache]: Analyzing trace with hash -78311717, now seen corresponding path program 1 times [2023-11-29 05:28:33,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:28:33,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492379476] [2023-11-29 05:28:33,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:28:33,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:28:33,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:28:33,597 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 05:28:33,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:28:33,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492379476] [2023-11-29 05:28:33,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492379476] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:28:33,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:28:33,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 05:28:33,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696807137] [2023-11-29 05:28:33,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:28:33,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:28:33,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:28:33,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:28:33,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 05:28:33,599 INFO L87 Difference]: Start difference. First operand 8468 states and 12473 transitions. Second operand has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:28:33,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:28:33,732 INFO L93 Difference]: Finished difference Result 20275 states and 29986 transitions. [2023-11-29 05:28:33,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 05:28:33,732 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2023-11-29 05:28:33,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:28:33,753 INFO L225 Difference]: With dead ends: 20275 [2023-11-29 05:28:33,753 INFO L226 Difference]: Without dead ends: 14365 [2023-11-29 05:28:33,760 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 05:28:33,761 INFO L413 NwaCegarLoop]: 247 mSDtfsCounter, 379 mSDsluCounter, 330 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 379 SdHoareTripleChecker+Valid, 577 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 05:28:33,761 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [379 Valid, 577 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 05:28:33,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14365 states. [2023-11-29 05:28:33,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14365 to 13149. [2023-11-29 05:28:33,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13149 states, 13148 states have (on average 1.4745968968664436) internal successors, (19388), 13148 states have internal predecessors, (19388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:28:33,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13149 states to 13149 states and 19388 transitions. [2023-11-29 05:28:33,989 INFO L78 Accepts]: Start accepts. Automaton has 13149 states and 19388 transitions. Word has length 103 [2023-11-29 05:28:33,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:28:33,989 INFO L495 AbstractCegarLoop]: Abstraction has 13149 states and 19388 transitions. [2023-11-29 05:28:33,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:28:33,989 INFO L276 IsEmpty]: Start isEmpty. Operand 13149 states and 19388 transitions. [2023-11-29 05:28:33,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2023-11-29 05:28:33,994 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:28:33,994 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:28:33,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-29 05:28:33,995 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:28:33,995 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:28:33,995 INFO L85 PathProgramCache]: Analyzing trace with hash 1505993995, now seen corresponding path program 1 times [2023-11-29 05:28:33,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:28:33,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002602105] [2023-11-29 05:28:33,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:28:33,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:28:34,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:28:34,093 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 74 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-11-29 05:28:34,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:28:34,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002602105] [2023-11-29 05:28:34,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002602105] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:28:34,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:28:34,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:28:34,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731687682] [2023-11-29 05:28:34,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:28:34,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:28:34,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:28:34,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:28:34,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:28:34,096 INFO L87 Difference]: Start difference. First operand 13149 states and 19388 transitions. Second operand has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:28:34,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:28:34,193 INFO L93 Difference]: Finished difference Result 22099 states and 32634 transitions. [2023-11-29 05:28:34,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:28:34,193 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 0 states have call successors, (0), 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 158 [2023-11-29 05:28:34,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:28:34,206 INFO L225 Difference]: With dead ends: 22099 [2023-11-29 05:28:34,207 INFO L226 Difference]: Without dead ends: 8505 [2023-11-29 05:28:34,214 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:28:34,215 INFO L413 NwaCegarLoop]: 304 mSDtfsCounter, 100 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 502 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:28:34,215 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 502 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:28:34,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8505 states. [2023-11-29 05:28:34,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8505 to 5360. [2023-11-29 05:28:34,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5360 states, 5359 states have (on average 1.459040865833178) internal successors, (7819), 5359 states have internal predecessors, (7819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:28:34,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5360 states to 5360 states and 7819 transitions. [2023-11-29 05:28:34,317 INFO L78 Accepts]: Start accepts. Automaton has 5360 states and 7819 transitions. Word has length 158 [2023-11-29 05:28:34,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:28:34,317 INFO L495 AbstractCegarLoop]: Abstraction has 5360 states and 7819 transitions. [2023-11-29 05:28:34,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:28:34,318 INFO L276 IsEmpty]: Start isEmpty. Operand 5360 states and 7819 transitions. [2023-11-29 05:28:34,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-11-29 05:28:34,321 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:28:34,321 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:28:34,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-29 05:28:34,322 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:28:34,322 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:28:34,322 INFO L85 PathProgramCache]: Analyzing trace with hash 1497899531, now seen corresponding path program 1 times [2023-11-29 05:28:34,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:28:34,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528960742] [2023-11-29 05:28:34,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:28:34,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:28:34,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:28:34,632 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 68 proven. 30 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-29 05:28:34,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:28:34,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528960742] [2023-11-29 05:28:34,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528960742] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:28:34,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [108086102] [2023-11-29 05:28:34,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:28:34,634 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:28:34,634 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb0e2c12-1bd8-4d9e-95e0-bfb5209c0235/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:28:34,636 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb0e2c12-1bd8-4d9e-95e0-bfb5209c0235/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:28:34,674 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb0e2c12-1bd8-4d9e-95e0-bfb5209c0235/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 05:28:34,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:28:34,864 INFO L262 TraceCheckSpWp]: Trace formula consists of 582 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 05:28:34,873 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:28:35,018 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2023-11-29 05:28:35,018 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:28:35,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [108086102] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:28:35,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:28:35,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2023-11-29 05:28:35,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707646361] [2023-11-29 05:28:35,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:28:35,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:28:35,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:28:35,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:28:35,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 05:28:35,021 INFO L87 Difference]: Start difference. First operand 5360 states and 7819 transitions. Second operand has 4 states, 4 states have (on average 27.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:28:35,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:28:35,088 INFO L93 Difference]: Finished difference Result 15714 states and 22844 transitions. [2023-11-29 05:28:35,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 05:28:35,089 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 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 162 [2023-11-29 05:28:35,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:28:35,099 INFO L225 Difference]: With dead ends: 15714 [2023-11-29 05:28:35,099 INFO L226 Difference]: Without dead ends: 10366 [2023-11-29 05:28:35,104 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-29 05:28:35,105 INFO L413 NwaCegarLoop]: 223 mSDtfsCounter, 497 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 497 SdHoareTripleChecker+Valid, 411 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:28:35,105 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [497 Valid, 411 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:28:35,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10366 states. [2023-11-29 05:28:35,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10366 to 10364. [2023-11-29 05:28:35,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10364 states, 10363 states have (on average 1.4405095049696035) internal successors, (14928), 10363 states have internal predecessors, (14928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:28:35,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10364 states to 10364 states and 14928 transitions. [2023-11-29 05:28:35,223 INFO L78 Accepts]: Start accepts. Automaton has 10364 states and 14928 transitions. Word has length 162 [2023-11-29 05:28:35,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:28:35,223 INFO L495 AbstractCegarLoop]: Abstraction has 10364 states and 14928 transitions. [2023-11-29 05:28:35,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:28:35,224 INFO L276 IsEmpty]: Start isEmpty. Operand 10364 states and 14928 transitions. [2023-11-29 05:28:35,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2023-11-29 05:28:35,228 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:28:35,229 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:28:35,241 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb0e2c12-1bd8-4d9e-95e0-bfb5209c0235/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 05:28:35,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb0e2c12-1bd8-4d9e-95e0-bfb5209c0235/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-11-29 05:28:35,429 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:28:35,430 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:28:35,430 INFO L85 PathProgramCache]: Analyzing trace with hash 481098960, now seen corresponding path program 1 times [2023-11-29 05:28:35,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:28:35,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596162768] [2023-11-29 05:28:35,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:28:35,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:28:35,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:28:35,499 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2023-11-29 05:28:35,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:28:35,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596162768] [2023-11-29 05:28:35,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596162768] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:28:35,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:28:35,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:28:35,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962790618] [2023-11-29 05:28:35,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:28:35,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:28:35,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:28:35,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:28:35,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:28:35,501 INFO L87 Difference]: Start difference. First operand 10364 states and 14928 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:28:35,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:28:35,573 INFO L93 Difference]: Finished difference Result 30989 states and 44639 transitions. [2023-11-29 05:28:35,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:28:35,574 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 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 163 [2023-11-29 05:28:35,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:28:35,594 INFO L225 Difference]: With dead ends: 30989 [2023-11-29 05:28:35,594 INFO L226 Difference]: Without dead ends: 20712 [2023-11-29 05:28:35,602 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:28:35,603 INFO L413 NwaCegarLoop]: 230 mSDtfsCounter, 187 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 434 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:28:35,603 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [187 Valid, 434 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:28:35,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20712 states. [2023-11-29 05:28:35,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20712 to 10367. [2023-11-29 05:28:35,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10367 states, 10366 states have (on average 1.4404784873625314) internal successors, (14932), 10366 states have internal predecessors, (14932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:28:35,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10367 states to 10367 states and 14932 transitions. [2023-11-29 05:28:35,775 INFO L78 Accepts]: Start accepts. Automaton has 10367 states and 14932 transitions. Word has length 163 [2023-11-29 05:28:35,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:28:35,775 INFO L495 AbstractCegarLoop]: Abstraction has 10367 states and 14932 transitions. [2023-11-29 05:28:35,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:28:35,775 INFO L276 IsEmpty]: Start isEmpty. Operand 10367 states and 14932 transitions. [2023-11-29 05:28:35,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2023-11-29 05:28:35,780 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:28:35,780 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:28:35,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-11-29 05:28:35,780 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:28:35,780 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:28:35,781 INFO L85 PathProgramCache]: Analyzing trace with hash 145420906, now seen corresponding path program 1 times [2023-11-29 05:28:35,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:28:35,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880345190] [2023-11-29 05:28:35,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:28:35,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:28:35,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:28:36,025 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 68 proven. 30 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-29 05:28:36,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:28:36,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880345190] [2023-11-29 05:28:36,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880345190] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:28:36,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [355120078] [2023-11-29 05:28:36,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:28:36,026 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:28:36,026 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb0e2c12-1bd8-4d9e-95e0-bfb5209c0235/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:28:36,027 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb0e2c12-1bd8-4d9e-95e0-bfb5209c0235/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:28:36,030 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb0e2c12-1bd8-4d9e-95e0-bfb5209c0235/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 05:28:36,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:28:36,205 INFO L262 TraceCheckSpWp]: Trace formula consists of 588 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 05:28:36,211 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:28:36,313 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2023-11-29 05:28:36,313 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:28:36,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [355120078] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:28:36,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:28:36,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2023-11-29 05:28:36,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805097873] [2023-11-29 05:28:36,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:28:36,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:28:36,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:28:36,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:28:36,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 05:28:36,315 INFO L87 Difference]: Start difference. First operand 10367 states and 14932 transitions. Second operand has 4 states, 4 states have (on average 26.75) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:28:36,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:28:36,411 INFO L93 Difference]: Finished difference Result 30580 states and 43915 transitions. [2023-11-29 05:28:36,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 05:28:36,412 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 164 [2023-11-29 05:28:36,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:28:36,431 INFO L225 Difference]: With dead ends: 30580 [2023-11-29 05:28:36,431 INFO L226 Difference]: Without dead ends: 20219 [2023-11-29 05:28:36,439 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-29 05:28:36,440 INFO L413 NwaCegarLoop]: 311 mSDtfsCounter, 431 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 431 SdHoareTripleChecker+Valid, 499 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:28:36,440 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [431 Valid, 499 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:28:36,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20219 states. [2023-11-29 05:28:36,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20219 to 20217. [2023-11-29 05:28:36,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20217 states, 20216 states have (on average 1.424416303917689) internal successors, (28796), 20216 states have internal predecessors, (28796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:28:36,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20217 states to 20217 states and 28796 transitions. [2023-11-29 05:28:36,633 INFO L78 Accepts]: Start accepts. Automaton has 20217 states and 28796 transitions. Word has length 164 [2023-11-29 05:28:36,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:28:36,634 INFO L495 AbstractCegarLoop]: Abstraction has 20217 states and 28796 transitions. [2023-11-29 05:28:36,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:28:36,634 INFO L276 IsEmpty]: Start isEmpty. Operand 20217 states and 28796 transitions. [2023-11-29 05:28:36,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2023-11-29 05:28:36,641 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:28:36,641 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:28:36,647 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb0e2c12-1bd8-4d9e-95e0-bfb5209c0235/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 05:28:36,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb0e2c12-1bd8-4d9e-95e0-bfb5209c0235/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-11-29 05:28:36,842 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:28:36,842 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:28:36,842 INFO L85 PathProgramCache]: Analyzing trace with hash 693640177, now seen corresponding path program 1 times [2023-11-29 05:28:36,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:28:36,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219472747] [2023-11-29 05:28:36,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:28:36,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:28:36,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:28:36,887 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2023-11-29 05:28:36,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:28:36,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219472747] [2023-11-29 05:28:36,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219472747] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:28:36,887 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:28:36,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:28:36,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698312798] [2023-11-29 05:28:36,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:28:36,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:28:36,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:28:36,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:28:36,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:28:36,889 INFO L87 Difference]: Start difference. First operand 20217 states and 28796 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:28:36,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:28:36,995 INFO L93 Difference]: Finished difference Result 60565 states and 86274 transitions. [2023-11-29 05:28:36,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:28:36,995 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 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 165 [2023-11-29 05:28:36,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:28:37,029 INFO L225 Difference]: With dead ends: 60565 [2023-11-29 05:28:37,029 INFO L226 Difference]: Without dead ends: 40424 [2023-11-29 05:28:37,044 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:28:37,045 INFO L413 NwaCegarLoop]: 235 mSDtfsCounter, 201 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 439 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:28:37,046 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [201 Valid, 439 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:28:37,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40424 states. [2023-11-29 05:28:37,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40424 to 20220. [2023-11-29 05:28:37,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20220 states, 20219 states have (on average 1.4244027894554627) internal successors, (28800), 20219 states have internal predecessors, (28800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:28:37,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20220 states to 20220 states and 28800 transitions. [2023-11-29 05:28:37,407 INFO L78 Accepts]: Start accepts. Automaton has 20220 states and 28800 transitions. Word has length 165 [2023-11-29 05:28:37,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:28:37,407 INFO L495 AbstractCegarLoop]: Abstraction has 20220 states and 28800 transitions. [2023-11-29 05:28:37,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:28:37,407 INFO L276 IsEmpty]: Start isEmpty. Operand 20220 states and 28800 transitions. [2023-11-29 05:28:37,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2023-11-29 05:28:37,411 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:28:37,411 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:28:37,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-11-29 05:28:37,412 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:28:37,412 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:28:37,412 INFO L85 PathProgramCache]: Analyzing trace with hash -1464619063, now seen corresponding path program 1 times [2023-11-29 05:28:37,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:28:37,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595246960] [2023-11-29 05:28:37,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:28:37,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:28:37,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:28:37,631 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 72 proven. 26 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-29 05:28:37,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:28:37,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595246960] [2023-11-29 05:28:37,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595246960] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:28:37,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1668876516] [2023-11-29 05:28:37,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:28:37,632 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:28:37,632 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb0e2c12-1bd8-4d9e-95e0-bfb5209c0235/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:28:37,633 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb0e2c12-1bd8-4d9e-95e0-bfb5209c0235/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:28:37,635 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb0e2c12-1bd8-4d9e-95e0-bfb5209c0235/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 05:28:37,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:28:37,802 INFO L262 TraceCheckSpWp]: Trace formula consists of 594 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 05:28:37,807 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:28:37,923 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2023-11-29 05:28:37,923 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:28:37,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1668876516] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:28:37,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:28:37,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2023-11-29 05:28:37,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584330605] [2023-11-29 05:28:37,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:28:37,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:28:37,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:28:37,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:28:37,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 05:28:37,925 INFO L87 Difference]: Start difference. First operand 20220 states and 28800 transitions. Second operand has 4 states, 4 states have (on average 28.75) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:28:38,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:28:38,083 INFO L93 Difference]: Finished difference Result 59164 states and 83910 transitions. [2023-11-29 05:28:38,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 05:28:38,083 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.75) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 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 166 [2023-11-29 05:28:38,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:28:38,123 INFO L225 Difference]: With dead ends: 59164 [2023-11-29 05:28:38,123 INFO L226 Difference]: Without dead ends: 39006 [2023-11-29 05:28:38,139 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-29 05:28:38,140 INFO L413 NwaCegarLoop]: 244 mSDtfsCounter, 445 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 445 SdHoareTripleChecker+Valid, 432 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:28:38,140 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [445 Valid, 432 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:28:38,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39006 states. [2023-11-29 05:28:38,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39006 to 39004. [2023-11-29 05:28:38,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39004 states, 39003 states have (on average 1.4032766710253057) internal successors, (54732), 39003 states have internal predecessors, (54732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:28:38,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39004 states to 39004 states and 54732 transitions. [2023-11-29 05:28:38,508 INFO L78 Accepts]: Start accepts. Automaton has 39004 states and 54732 transitions. Word has length 166 [2023-11-29 05:28:38,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:28:38,508 INFO L495 AbstractCegarLoop]: Abstraction has 39004 states and 54732 transitions. [2023-11-29 05:28:38,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.75) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:28:38,508 INFO L276 IsEmpty]: Start isEmpty. Operand 39004 states and 54732 transitions. [2023-11-29 05:28:38,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2023-11-29 05:28:38,515 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:28:38,516 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:28:38,521 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb0e2c12-1bd8-4d9e-95e0-bfb5209c0235/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 05:28:38,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb0e2c12-1bd8-4d9e-95e0-bfb5209c0235/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-11-29 05:28:38,716 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:28:38,717 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:28:38,717 INFO L85 PathProgramCache]: Analyzing trace with hash 1040506417, now seen corresponding path program 1 times [2023-11-29 05:28:38,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:28:38,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898053828] [2023-11-29 05:28:38,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:28:38,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:28:38,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:28:38,761 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2023-11-29 05:28:38,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:28:38,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898053828] [2023-11-29 05:28:38,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898053828] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:28:38,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:28:38,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:28:38,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601847205] [2023-11-29 05:28:38,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:28:38,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:28:38,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:28:38,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:28:38,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:28:38,763 INFO L87 Difference]: Start difference. First operand 39004 states and 54732 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:28:39,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:28:39,091 INFO L93 Difference]: Finished difference Result 116580 states and 163622 transitions. [2023-11-29 05:28:39,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:28:39,092 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 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 167 [2023-11-29 05:28:39,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:28:39,150 INFO L225 Difference]: With dead ends: 116580 [2023-11-29 05:28:39,150 INFO L226 Difference]: Without dead ends: 77922 [2023-11-29 05:28:39,164 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:28:39,164 INFO L413 NwaCegarLoop]: 380 mSDtfsCounter, 173 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 582 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:28:39,165 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 582 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:28:39,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77922 states. [2023-11-29 05:28:39,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77922 to 39012. [2023-11-29 05:28:39,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39012 states, 39011 states have (on average 1.4031939709312757) internal successors, (54740), 39011 states have internal predecessors, (54740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:28:39,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39012 states to 39012 states and 54740 transitions. [2023-11-29 05:28:39,820 INFO L78 Accepts]: Start accepts. Automaton has 39012 states and 54740 transitions. Word has length 167 [2023-11-29 05:28:39,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:28:39,820 INFO L495 AbstractCegarLoop]: Abstraction has 39012 states and 54740 transitions. [2023-11-29 05:28:39,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:28:39,821 INFO L276 IsEmpty]: Start isEmpty. Operand 39012 states and 54740 transitions. [2023-11-29 05:28:39,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2023-11-29 05:28:39,834 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:28:39,834 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:28:39,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-11-29 05:28:39,835 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:28:39,835 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:28:39,835 INFO L85 PathProgramCache]: Analyzing trace with hash -952262319, now seen corresponding path program 1 times [2023-11-29 05:28:39,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:28:39,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317373016] [2023-11-29 05:28:39,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:28:39,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:28:39,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:28:39,911 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2023-11-29 05:28:39,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:28:39,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317373016] [2023-11-29 05:28:39,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317373016] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:28:39,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:28:39,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:28:39,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555716034] [2023-11-29 05:28:39,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:28:39,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:28:39,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:28:39,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:28:39,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:28:39,914 INFO L87 Difference]: Start difference. First operand 39012 states and 54740 transitions. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:28:40,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:28:40,153 INFO L93 Difference]: Finished difference Result 100448 states and 140426 transitions. [2023-11-29 05:28:40,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:28:40,154 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 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 168 [2023-11-29 05:28:40,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:28:40,209 INFO L225 Difference]: With dead ends: 100448 [2023-11-29 05:28:40,209 INFO L226 Difference]: Without dead ends: 61974 [2023-11-29 05:28:40,233 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:28:40,233 INFO L413 NwaCegarLoop]: 372 mSDtfsCounter, 129 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 566 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:28:40,234 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 566 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:28:40,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61974 states. [2023-11-29 05:28:40,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61974 to 61972. [2023-11-29 05:28:40,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61972 states, 61971 states have (on average 1.3787093963305417) internal successors, (85440), 61971 states have internal predecessors, (85440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:28:40,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61972 states to 61972 states and 85440 transitions. [2023-11-29 05:28:40,988 INFO L78 Accepts]: Start accepts. Automaton has 61972 states and 85440 transitions. Word has length 168 [2023-11-29 05:28:40,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:28:40,989 INFO L495 AbstractCegarLoop]: Abstraction has 61972 states and 85440 transitions. [2023-11-29 05:28:40,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:28:40,989 INFO L276 IsEmpty]: Start isEmpty. Operand 61972 states and 85440 transitions. [2023-11-29 05:28:41,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2023-11-29 05:28:41,004 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:28:41,004 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:28:41,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-11-29 05:28:41,005 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:28:41,005 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:28:41,005 INFO L85 PathProgramCache]: Analyzing trace with hash 1234917460, now seen corresponding path program 1 times [2023-11-29 05:28:41,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:28:41,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911523165] [2023-11-29 05:28:41,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:28:41,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:28:41,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:28:41,209 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 72 proven. 26 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-29 05:28:41,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:28:41,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911523165] [2023-11-29 05:28:41,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911523165] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:28:41,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [689019070] [2023-11-29 05:28:41,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:28:41,210 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:28:41,210 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb0e2c12-1bd8-4d9e-95e0-bfb5209c0235/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:28:41,211 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb0e2c12-1bd8-4d9e-95e0-bfb5209c0235/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:28:41,216 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb0e2c12-1bd8-4d9e-95e0-bfb5209c0235/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 05:28:41,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:28:41,384 INFO L262 TraceCheckSpWp]: Trace formula consists of 598 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 05:28:41,389 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:28:41,520 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2023-11-29 05:28:41,520 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:28:41,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [689019070] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:28:41,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:28:41,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2023-11-29 05:28:41,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370767942] [2023-11-29 05:28:41,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:28:41,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:28:41,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:28:41,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:28:41,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 05:28:41,522 INFO L87 Difference]: Start difference. First operand 61972 states and 85440 transitions. Second operand has 4 states, 4 states have (on average 29.25) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:28:41,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:28:41,932 INFO L93 Difference]: Finished difference Result 180697 states and 247967 transitions. [2023-11-29 05:28:41,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 05:28:41,933 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.25) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 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 168 [2023-11-29 05:28:41,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:28:42,046 INFO L225 Difference]: With dead ends: 180697 [2023-11-29 05:28:42,047 INFO L226 Difference]: Without dead ends: 118821 [2023-11-29 05:28:42,090 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-29 05:28:42,091 INFO L413 NwaCegarLoop]: 259 mSDtfsCounter, 450 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 450 SdHoareTripleChecker+Valid, 447 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:28:42,091 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [450 Valid, 447 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:28:42,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118821 states. [2023-11-29 05:28:43,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118821 to 118819. [2023-11-29 05:28:43,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118819 states, 118818 states have (on average 1.3564190610850209) internal successors, (161167), 118818 states have internal predecessors, (161167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:28:44,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118819 states to 118819 states and 161167 transitions. [2023-11-29 05:28:44,048 INFO L78 Accepts]: Start accepts. Automaton has 118819 states and 161167 transitions. Word has length 168 [2023-11-29 05:28:44,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:28:44,048 INFO L495 AbstractCegarLoop]: Abstraction has 118819 states and 161167 transitions. [2023-11-29 05:28:44,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.25) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:28:44,049 INFO L276 IsEmpty]: Start isEmpty. Operand 118819 states and 161167 transitions. [2023-11-29 05:28:44,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2023-11-29 05:28:44,077 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:28:44,077 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:28:44,081 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb0e2c12-1bd8-4d9e-95e0-bfb5209c0235/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 05:28:44,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb0e2c12-1bd8-4d9e-95e0-bfb5209c0235/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-11-29 05:28:44,278 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:28:44,278 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:28:44,278 INFO L85 PathProgramCache]: Analyzing trace with hash -1246498840, now seen corresponding path program 1 times [2023-11-29 05:28:44,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:28:44,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011886665] [2023-11-29 05:28:44,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:28:44,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:28:44,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:28:44,533 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 72 proven. 26 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-29 05:28:44,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:28:44,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011886665] [2023-11-29 05:28:44,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011886665] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:28:44,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1523549720] [2023-11-29 05:28:44,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:28:44,534 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:28:44,534 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb0e2c12-1bd8-4d9e-95e0-bfb5209c0235/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:28:44,536 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb0e2c12-1bd8-4d9e-95e0-bfb5209c0235/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:28:44,538 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb0e2c12-1bd8-4d9e-95e0-bfb5209c0235/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 05:28:44,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:28:44,712 INFO L262 TraceCheckSpWp]: Trace formula consists of 600 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 05:28:44,717 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:28:44,765 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2023-11-29 05:28:44,766 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:28:44,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1523549720] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:28:44,766 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:28:44,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2023-11-29 05:28:44,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491212341] [2023-11-29 05:28:44,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:28:44,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:28:44,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:28:44,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:28:44,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 05:28:44,768 INFO L87 Difference]: Start difference. First operand 118819 states and 161167 transitions. Second operand has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:28:45,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:28:45,307 INFO L93 Difference]: Finished difference Result 237597 states and 322279 transitions. [2023-11-29 05:28:45,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 05:28:45,307 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 168 [2023-11-29 05:28:45,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:28:45,397 INFO L225 Difference]: With dead ends: 237597 [2023-11-29 05:28:45,397 INFO L226 Difference]: Without dead ends: 118814 [2023-11-29 05:28:45,430 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-29 05:28:45,431 INFO L413 NwaCegarLoop]: 252 mSDtfsCounter, 65 mSDsluCounter, 411 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 663 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:28:45,431 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 663 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:28:45,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118814 states. [2023-11-29 05:28:46,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118814 to 118814. [2023-11-29 05:28:46,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118814 states, 118813 states have (on average 1.3564003938962907) internal successors, (161158), 118813 states have internal predecessors, (161158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:28:46,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118814 states to 118814 states and 161158 transitions. [2023-11-29 05:28:46,712 INFO L78 Accepts]: Start accepts. Automaton has 118814 states and 161158 transitions. Word has length 168 [2023-11-29 05:28:46,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:28:46,712 INFO L495 AbstractCegarLoop]: Abstraction has 118814 states and 161158 transitions. [2023-11-29 05:28:46,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:28:46,712 INFO L276 IsEmpty]: Start isEmpty. Operand 118814 states and 161158 transitions. [2023-11-29 05:28:46,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2023-11-29 05:28:46,725 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:28:46,726 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:28:46,731 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb0e2c12-1bd8-4d9e-95e0-bfb5209c0235/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-29 05:28:46,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb0e2c12-1bd8-4d9e-95e0-bfb5209c0235/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-11-29 05:28:46,926 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:28:46,927 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:28:46,927 INFO L85 PathProgramCache]: Analyzing trace with hash -1005622038, now seen corresponding path program 1 times [2023-11-29 05:28:46,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:28:46,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752390891] [2023-11-29 05:28:46,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:28:46,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:28:46,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:28:47,339 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 72 proven. 26 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-29 05:28:47,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:28:47,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752390891] [2023-11-29 05:28:47,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752390891] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:28:47,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2021550101] [2023-11-29 05:28:47,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:28:47,340 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:28:47,340 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb0e2c12-1bd8-4d9e-95e0-bfb5209c0235/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:28:47,341 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb0e2c12-1bd8-4d9e-95e0-bfb5209c0235/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:28:47,349 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb0e2c12-1bd8-4d9e-95e0-bfb5209c0235/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 05:28:47,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:28:47,512 INFO L262 TraceCheckSpWp]: Trace formula consists of 598 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 05:28:47,515 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:28:47,605 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2023-11-29 05:28:47,605 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:28:47,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2021550101] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:28:47,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:28:47,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2023-11-29 05:28:47,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618448737] [2023-11-29 05:28:47,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:28:47,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:28:47,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:28:47,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:28:47,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 05:28:47,607 INFO L87 Difference]: Start difference. First operand 118814 states and 161158 transitions. Second operand has 4 states, 4 states have (on average 27.75) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:28:48,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:28:48,350 INFO L93 Difference]: Finished difference Result 266854 states and 361494 transitions. [2023-11-29 05:28:48,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 05:28:48,351 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 168 [2023-11-29 05:28:48,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:28:48,466 INFO L225 Difference]: With dead ends: 266854 [2023-11-29 05:28:48,466 INFO L226 Difference]: Without dead ends: 148830 [2023-11-29 05:28:48,502 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-29 05:28:48,503 INFO L413 NwaCegarLoop]: 198 mSDtfsCounter, 531 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 531 SdHoareTripleChecker+Valid, 374 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:28:48,503 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [531 Valid, 374 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:28:48,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148830 states. [2023-11-29 05:28:49,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148830 to 148828. [2023-11-29 05:28:49,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148828 states, 148827 states have (on average 1.3352281508059693) internal successors, (198718), 148827 states have internal predecessors, (198718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:28:50,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148828 states to 148828 states and 198718 transitions. [2023-11-29 05:28:50,184 INFO L78 Accepts]: Start accepts. Automaton has 148828 states and 198718 transitions. Word has length 168 [2023-11-29 05:28:50,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:28:50,185 INFO L495 AbstractCegarLoop]: Abstraction has 148828 states and 198718 transitions. [2023-11-29 05:28:50,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:28:50,185 INFO L276 IsEmpty]: Start isEmpty. Operand 148828 states and 198718 transitions. [2023-11-29 05:28:50,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-11-29 05:28:50,214 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:28:50,214 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:28:50,220 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb0e2c12-1bd8-4d9e-95e0-bfb5209c0235/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-29 05:28:50,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb0e2c12-1bd8-4d9e-95e0-bfb5209c0235/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:28:50,415 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:28:50,415 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:28:50,416 INFO L85 PathProgramCache]: Analyzing trace with hash -914041793, now seen corresponding path program 1 times [2023-11-29 05:28:50,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:28:50,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964819376] [2023-11-29 05:28:50,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:28:50,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:28:50,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:28:50,487 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2023-11-29 05:28:50,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:28:50,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964819376] [2023-11-29 05:28:50,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964819376] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:28:50,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:28:50,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:28:50,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62865402] [2023-11-29 05:28:50,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:28:50,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:28:50,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:28:50,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:28:50,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:28:50,489 INFO L87 Difference]: Start difference. First operand 148828 states and 198718 transitions. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:28:51,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:28:51,424 INFO L93 Difference]: Finished difference Result 350930 states and 468738 transitions. [2023-11-29 05:28:51,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:28:51,424 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 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 171 [2023-11-29 05:28:51,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:28:51,892 INFO L225 Difference]: With dead ends: 350930 [2023-11-29 05:28:51,892 INFO L226 Difference]: Without dead ends: 203318 [2023-11-29 05:28:51,929 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:28:51,930 INFO L413 NwaCegarLoop]: 210 mSDtfsCounter, 94 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 395 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:28:51,930 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 395 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:28:52,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203318 states. [2023-11-29 05:28:53,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203318 to 150316. [2023-11-29 05:28:53,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150316 states, 150315 states have (on average 1.3349698965505772) internal successors, (200666), 150315 states have internal predecessors, (200666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:28:53,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150316 states to 150316 states and 200666 transitions. [2023-11-29 05:28:53,753 INFO L78 Accepts]: Start accepts. Automaton has 150316 states and 200666 transitions. Word has length 171 [2023-11-29 05:28:53,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:28:53,753 INFO L495 AbstractCegarLoop]: Abstraction has 150316 states and 200666 transitions. [2023-11-29 05:28:53,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:28:53,753 INFO L276 IsEmpty]: Start isEmpty. Operand 150316 states and 200666 transitions. [2023-11-29 05:28:53,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2023-11-29 05:28:53,791 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:28:53,791 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:28:53,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-11-29 05:28:53,792 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:28:53,792 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:28:53,792 INFO L85 PathProgramCache]: Analyzing trace with hash -1172448849, now seen corresponding path program 1 times [2023-11-29 05:28:53,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:28:53,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240512952] [2023-11-29 05:28:53,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:28:53,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:28:53,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:28:54,483 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 30 proven. 75 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 05:28:54,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:28:54,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240512952] [2023-11-29 05:28:54,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240512952] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:28:54,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1466704060] [2023-11-29 05:28:54,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:28:54,484 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:28:54,484 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb0e2c12-1bd8-4d9e-95e0-bfb5209c0235/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:28:54,497 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb0e2c12-1bd8-4d9e-95e0-bfb5209c0235/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:28:54,512 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb0e2c12-1bd8-4d9e-95e0-bfb5209c0235/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 05:28:54,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:28:54,689 INFO L262 TraceCheckSpWp]: Trace formula consists of 621 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 05:28:54,692 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:28:55,215 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 30 proven. 75 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 05:28:55,215 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:28:55,518 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 30 proven. 75 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 05:28:55,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1466704060] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:28:55,518 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 05:28:55,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 21 [2023-11-29 05:28:55,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343866926] [2023-11-29 05:28:55,519 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 05:28:55,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-11-29 05:28:55,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:28:55,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-11-29 05:28:55,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=388, Unknown=0, NotChecked=0, Total=462 [2023-11-29 05:28:55,521 INFO L87 Difference]: Start difference. First operand 150316 states and 200666 transitions. Second operand has 22 states, 22 states have (on average 20.863636363636363) internal successors, (459), 21 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:28:58,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:28:58,048 INFO L93 Difference]: Finished difference Result 799208 states and 1068981 transitions. [2023-11-29 05:28:58,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-11-29 05:28:58,049 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 20.863636363636363) internal successors, (459), 21 states have internal predecessors, (459), 0 states have call successors, (0), 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 174 [2023-11-29 05:28:58,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:28:58,707 INFO L225 Difference]: With dead ends: 799208 [2023-11-29 05:28:58,707 INFO L226 Difference]: Without dead ends: 655946 [2023-11-29 05:28:58,803 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 375 GetRequests, 337 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 267 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=453, Invalid=1107, Unknown=0, NotChecked=0, Total=1560 [2023-11-29 05:28:58,803 INFO L413 NwaCegarLoop]: 350 mSDtfsCounter, 3137 mSDsluCounter, 2041 mSDsCounter, 0 mSdLazyCounter, 684 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3137 SdHoareTripleChecker+Valid, 2391 SdHoareTripleChecker+Invalid, 708 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 684 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 05:28:58,804 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3137 Valid, 2391 Invalid, 708 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 684 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 05:28:59,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 655946 states. [2023-11-29 05:29:02,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 655946 to 203468. [2023-11-29 05:29:02,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203468 states, 203467 states have (on average 1.3107874987098644) internal successors, (266702), 203467 states have internal predecessors, (266702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:29:03,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203468 states to 203468 states and 266702 transitions. [2023-11-29 05:29:03,190 INFO L78 Accepts]: Start accepts. Automaton has 203468 states and 266702 transitions. Word has length 174 [2023-11-29 05:29:03,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:29:03,191 INFO L495 AbstractCegarLoop]: Abstraction has 203468 states and 266702 transitions. [2023-11-29 05:29:03,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 20.863636363636363) internal successors, (459), 21 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:29:03,191 INFO L276 IsEmpty]: Start isEmpty. Operand 203468 states and 266702 transitions. [2023-11-29 05:29:03,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2023-11-29 05:29:03,584 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:29:03,584 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:29:03,590 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb0e2c12-1bd8-4d9e-95e0-bfb5209c0235/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-29 05:29:03,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb0e2c12-1bd8-4d9e-95e0-bfb5209c0235/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:29:03,790 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:29:03,791 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:29:03,791 INFO L85 PathProgramCache]: Analyzing trace with hash -2021351480, now seen corresponding path program 1 times [2023-11-29 05:29:03,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:29:03,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774477118] [2023-11-29 05:29:03,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:29:03,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:29:03,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:29:04,034 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-11-29 05:29:04,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:29:04,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774477118] [2023-11-29 05:29:04,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774477118] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:29:04,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:29:04,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 05:29:04,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726547772] [2023-11-29 05:29:04,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:29:04,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:29:04,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:29:04,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:29:04,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 05:29:04,036 INFO L87 Difference]: Start difference. First operand 203468 states and 266702 transitions. Second operand has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:29:05,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:29:05,341 INFO L93 Difference]: Finished difference Result 468869 states and 617626 transitions. [2023-11-29 05:29:05,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 05:29:05,341 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 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 174 [2023-11-29 05:29:05,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:29:05,713 INFO L225 Difference]: With dead ends: 468869 [2023-11-29 05:29:05,713 INFO L226 Difference]: Without dead ends: 357003 [2023-11-29 05:29:05,788 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 05:29:05,788 INFO L413 NwaCegarLoop]: 287 mSDtfsCounter, 175 mSDsluCounter, 241 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 528 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:29:05,788 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 528 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:29:06,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357003 states. [2023-11-29 05:29:08,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357003 to 326167. [2023-11-29 05:29:09,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326167 states, 326166 states have (on average 1.3138524554981206) internal successors, (428534), 326166 states have internal predecessors, (428534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:29:10,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326167 states to 326167 states and 428534 transitions. [2023-11-29 05:29:10,004 INFO L78 Accepts]: Start accepts. Automaton has 326167 states and 428534 transitions. Word has length 174 [2023-11-29 05:29:10,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:29:10,005 INFO L495 AbstractCegarLoop]: Abstraction has 326167 states and 428534 transitions. [2023-11-29 05:29:10,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:29:10,005 INFO L276 IsEmpty]: Start isEmpty. Operand 326167 states and 428534 transitions. [2023-11-29 05:29:10,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2023-11-29 05:29:10,047 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:29:10,048 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:29:10,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2023-11-29 05:29:10,048 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:29:10,048 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:29:10,048 INFO L85 PathProgramCache]: Analyzing trace with hash -346446914, now seen corresponding path program 1 times [2023-11-29 05:29:10,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:29:10,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005138026] [2023-11-29 05:29:10,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:29:10,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:29:10,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:29:10,244 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 73 proven. 26 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-29 05:29:10,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:29:10,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005138026] [2023-11-29 05:29:10,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005138026] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:29:10,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [947925175] [2023-11-29 05:29:10,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:29:10,245 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:29:10,245 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb0e2c12-1bd8-4d9e-95e0-bfb5209c0235/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:29:10,246 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb0e2c12-1bd8-4d9e-95e0-bfb5209c0235/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:29:10,248 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb0e2c12-1bd8-4d9e-95e0-bfb5209c0235/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 05:29:10,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:29:10,408 INFO L262 TraceCheckSpWp]: Trace formula consists of 617 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 05:29:10,411 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:29:10,452 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2023-11-29 05:29:10,452 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:29:10,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [947925175] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:29:10,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:29:10,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2023-11-29 05:29:10,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703172409] [2023-11-29 05:29:10,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:29:10,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:29:10,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:29:10,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:29:10,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 05:29:10,455 INFO L87 Difference]: Start difference. First operand 326167 states and 428534 transitions. Second operand has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:29:11,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:29:11,733 INFO L93 Difference]: Finished difference Result 539681 states and 708227 transitions. [2023-11-29 05:29:11,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 05:29:11,733 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 0 states have call successors, (0), 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 174 [2023-11-29 05:29:11,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:29:11,991 INFO L225 Difference]: With dead ends: 539681 [2023-11-29 05:29:11,991 INFO L226 Difference]: Without dead ends: 261729 [2023-11-29 05:29:12,090 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-29 05:29:12,090 INFO L413 NwaCegarLoop]: 240 mSDtfsCounter, 53 mSDsluCounter, 400 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 640 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:29:12,090 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 640 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:29:12,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261729 states. [2023-11-29 05:29:14,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261729 to 261729. [2023-11-29 05:29:15,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261729 states, 261728 states have (on average 1.3124350470717692) internal successors, (343501), 261728 states have internal predecessors, (343501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:29:15,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261729 states to 261729 states and 343501 transitions. [2023-11-29 05:29:15,343 INFO L78 Accepts]: Start accepts. Automaton has 261729 states and 343501 transitions. Word has length 174 [2023-11-29 05:29:15,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:29:15,343 INFO L495 AbstractCegarLoop]: Abstraction has 261729 states and 343501 transitions. [2023-11-29 05:29:15,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:29:15,343 INFO L276 IsEmpty]: Start isEmpty. Operand 261729 states and 343501 transitions. [2023-11-29 05:29:15,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2023-11-29 05:29:15,373 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:29:15,373 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:29:15,378 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb0e2c12-1bd8-4d9e-95e0-bfb5209c0235/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-29 05:29:15,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb0e2c12-1bd8-4d9e-95e0-bfb5209c0235/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2023-11-29 05:29:15,574 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:29:15,574 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:29:15,574 INFO L85 PathProgramCache]: Analyzing trace with hash 2061735416, now seen corresponding path program 1 times [2023-11-29 05:29:15,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:29:15,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627075344] [2023-11-29 05:29:15,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:29:15,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:29:15,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:29:15,622 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2023-11-29 05:29:15,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:29:15,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627075344] [2023-11-29 05:29:15,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627075344] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:29:15,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:29:15,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:29:15,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992544752] [2023-11-29 05:29:15,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:29:15,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:29:15,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:29:15,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:29:15,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:29:15,624 INFO L87 Difference]: Start difference. First operand 261729 states and 343501 transitions. Second operand has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:29:17,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:29:17,123 INFO L93 Difference]: Finished difference Result 610546 states and 799574 transitions. [2023-11-29 05:29:17,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:29:17,124 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 0 states have call successors, (0), 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 175 [2023-11-29 05:29:17,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:29:17,515 INFO L225 Difference]: With dead ends: 610546 [2023-11-29 05:29:17,515 INFO L226 Difference]: Without dead ends: 383882 [2023-11-29 05:29:17,622 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:29:17,623 INFO L413 NwaCegarLoop]: 208 mSDtfsCounter, 93 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 392 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:29:17,623 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 392 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:29:18,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383882 states. [2023-11-29 05:29:21,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383882 to 265335. [2023-11-29 05:29:21,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265335 states, 265334 states have (on average 1.3110457008901988) internal successors, (347865), 265334 states have internal predecessors, (347865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:29:21,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265335 states to 265335 states and 347865 transitions. [2023-11-29 05:29:21,918 INFO L78 Accepts]: Start accepts. Automaton has 265335 states and 347865 transitions. Word has length 175 [2023-11-29 05:29:21,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:29:21,918 INFO L495 AbstractCegarLoop]: Abstraction has 265335 states and 347865 transitions. [2023-11-29 05:29:21,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:29:21,918 INFO L276 IsEmpty]: Start isEmpty. Operand 265335 states and 347865 transitions. [2023-11-29 05:29:21,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2023-11-29 05:29:21,948 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:29:21,948 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:29:21,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2023-11-29 05:29:21,948 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:29:21,948 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:29:21,949 INFO L85 PathProgramCache]: Analyzing trace with hash 1048220953, now seen corresponding path program 1 times [2023-11-29 05:29:21,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:29:21,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343004320] [2023-11-29 05:29:21,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:29:21,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:29:21,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:29:21,997 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2023-11-29 05:29:21,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:29:21,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343004320] [2023-11-29 05:29:21,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343004320] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:29:21,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:29:21,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:29:21,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819358042] [2023-11-29 05:29:21,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:29:21,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:29:21,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:29:21,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:29:21,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:29:21,999 INFO L87 Difference]: Start difference. First operand 265335 states and 347865 transitions. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:29:23,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:29:23,600 INFO L93 Difference]: Finished difference Result 592619 states and 771741 transitions. [2023-11-29 05:29:23,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:29:23,600 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 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 177 [2023-11-29 05:29:23,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:29:23,954 INFO L225 Difference]: With dead ends: 592619 [2023-11-29 05:29:23,955 INFO L226 Difference]: Without dead ends: 367272 [2023-11-29 05:29:24,045 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:29:24,046 INFO L413 NwaCegarLoop]: 210 mSDtfsCounter, 99 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 393 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:29:24,046 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 393 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:29:24,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367272 states. [2023-11-29 05:29:27,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367272 to 268817. [2023-11-29 05:29:27,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268817 states, 268816 states have (on average 1.3102977501339206) internal successors, (352229), 268816 states have internal predecessors, (352229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:29:27,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268817 states to 268817 states and 352229 transitions. [2023-11-29 05:29:27,534 INFO L78 Accepts]: Start accepts. Automaton has 268817 states and 352229 transitions. Word has length 177 [2023-11-29 05:29:27,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:29:27,534 INFO L495 AbstractCegarLoop]: Abstraction has 268817 states and 352229 transitions. [2023-11-29 05:29:27,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:29:27,534 INFO L276 IsEmpty]: Start isEmpty. Operand 268817 states and 352229 transitions. [2023-11-29 05:29:27,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2023-11-29 05:29:27,564 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:29:27,565 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:29:27,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2023-11-29 05:29:27,565 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:29:27,565 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:29:27,565 INFO L85 PathProgramCache]: Analyzing trace with hash 153078232, now seen corresponding path program 1 times [2023-11-29 05:29:27,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:29:27,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773134249] [2023-11-29 05:29:27,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:29:27,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:29:28,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:29:28,195 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 70 proven. 30 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-29 05:29:28,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:29:28,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773134249] [2023-11-29 05:29:28,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773134249] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:29:28,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1435752809] [2023-11-29 05:29:28,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:29:28,196 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:29:28,196 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb0e2c12-1bd8-4d9e-95e0-bfb5209c0235/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:29:28,209 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb0e2c12-1bd8-4d9e-95e0-bfb5209c0235/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:29:28,264 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb0e2c12-1bd8-4d9e-95e0-bfb5209c0235/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 05:29:28,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:29:28,423 INFO L262 TraceCheckSpWp]: Trace formula consists of 625 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 05:29:28,426 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:29:28,511 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2023-11-29 05:29:28,511 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:29:28,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1435752809] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:29:28,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:29:28,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2023-11-29 05:29:28,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621059537] [2023-11-29 05:29:28,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:29:28,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:29:28,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:29:28,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:29:28,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 05:29:28,513 INFO L87 Difference]: Start difference. First operand 268817 states and 352229 transitions. Second operand has 4 states, 4 states have (on average 30.75) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:29:30,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:29:30,088 INFO L93 Difference]: Finished difference Result 537050 states and 703803 transitions. [2023-11-29 05:29:30,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 05:29:30,088 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.75) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 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 178 [2023-11-29 05:29:30,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:29:30,402 INFO L225 Difference]: With dead ends: 537050 [2023-11-29 05:29:30,402 INFO L226 Difference]: Without dead ends: 269413 [2023-11-29 05:29:30,502 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-29 05:29:30,503 INFO L413 NwaCegarLoop]: 289 mSDtfsCounter, 398 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 398 SdHoareTripleChecker+Valid, 471 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:29:30,503 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [398 Valid, 471 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:29:30,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269413 states. [2023-11-29 05:29:32,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269413 to 269411. [2023-11-29 05:29:33,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269411 states, 269410 states have (on average 1.3098103262685126) internal successors, (352876), 269410 states have internal predecessors, (352876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:29:33,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269411 states to 269411 states and 352876 transitions. [2023-11-29 05:29:33,346 INFO L78 Accepts]: Start accepts. Automaton has 269411 states and 352876 transitions. Word has length 178 [2023-11-29 05:29:33,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:29:33,346 INFO L495 AbstractCegarLoop]: Abstraction has 269411 states and 352876 transitions. [2023-11-29 05:29:33,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.75) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:29:33,346 INFO L276 IsEmpty]: Start isEmpty. Operand 269411 states and 352876 transitions. [2023-11-29 05:29:33,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2023-11-29 05:29:33,376 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:29:33,377 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:29:33,381 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb0e2c12-1bd8-4d9e-95e0-bfb5209c0235/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-29 05:29:33,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb0e2c12-1bd8-4d9e-95e0-bfb5209c0235/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2023-11-29 05:29:33,577 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:29:33,578 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:29:33,578 INFO L85 PathProgramCache]: Analyzing trace with hash 1121635681, now seen corresponding path program 1 times [2023-11-29 05:29:33,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:29:33,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044599249] [2023-11-29 05:29:33,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:29:33,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:29:33,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:29:34,425 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 17 proven. 87 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-29 05:29:34,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:29:34,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044599249] [2023-11-29 05:29:34,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044599249] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:29:34,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [869735577] [2023-11-29 05:29:34,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:29:34,425 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:29:34,426 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb0e2c12-1bd8-4d9e-95e0-bfb5209c0235/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:29:34,426 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb0e2c12-1bd8-4d9e-95e0-bfb5209c0235/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:29:34,427 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb0e2c12-1bd8-4d9e-95e0-bfb5209c0235/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-29 05:29:34,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:29:34,580 INFO L262 TraceCheckSpWp]: Trace formula consists of 636 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 05:29:34,583 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:29:35,081 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 17 proven. 87 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-29 05:29:35,081 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:29:35,349 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 17 proven. 87 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-29 05:29:35,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [869735577] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:29:35,349 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 05:29:35,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 21 [2023-11-29 05:29:35,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116471825] [2023-11-29 05:29:35,350 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 05:29:35,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-11-29 05:29:35,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:29:35,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-11-29 05:29:35,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=388, Unknown=0, NotChecked=0, Total=462 [2023-11-29 05:29:35,352 INFO L87 Difference]: Start difference. First operand 269411 states and 352876 transitions. Second operand has 22 states, 22 states have (on average 21.954545454545453) internal successors, (483), 21 states have internal predecessors, (483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:29:39,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:29:39,145 INFO L93 Difference]: Finished difference Result 1378998 states and 1810641 transitions. [2023-11-29 05:29:39,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-11-29 05:29:39,146 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 21.954545454545453) internal successors, (483), 21 states have internal predecessors, (483), 0 states have call successors, (0), 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 178 [2023-11-29 05:29:39,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:29:40,381 INFO L225 Difference]: With dead ends: 1378998 [2023-11-29 05:29:40,381 INFO L226 Difference]: Without dead ends: 1124519 [2023-11-29 05:29:41,017 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 383 GetRequests, 345 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 269 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=453, Invalid=1107, Unknown=0, NotChecked=0, Total=1560 [2023-11-29 05:29:41,018 INFO L413 NwaCegarLoop]: 411 mSDtfsCounter, 2690 mSDsluCounter, 2772 mSDsCounter, 0 mSdLazyCounter, 828 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2690 SdHoareTripleChecker+Valid, 3183 SdHoareTripleChecker+Invalid, 861 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 828 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 05:29:41,018 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2690 Valid, 3183 Invalid, 861 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 828 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 05:29:41,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1124519 states. [2023-11-29 05:29:47,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1124519 to 350811. [2023-11-29 05:29:47,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 350811 states, 350810 states have (on average 1.2846469598928194) internal successors, (450667), 350810 states have internal predecessors, (450667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:29:48,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350811 states to 350811 states and 450667 transitions. [2023-11-29 05:29:48,466 INFO L78 Accepts]: Start accepts. Automaton has 350811 states and 450667 transitions. Word has length 178 [2023-11-29 05:29:48,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:29:48,466 INFO L495 AbstractCegarLoop]: Abstraction has 350811 states and 450667 transitions. [2023-11-29 05:29:48,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 21.954545454545453) internal successors, (483), 21 states have internal predecessors, (483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:29:48,467 INFO L276 IsEmpty]: Start isEmpty. Operand 350811 states and 450667 transitions. [2023-11-29 05:29:48,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2023-11-29 05:29:48,530 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:29:48,530 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:29:48,536 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb0e2c12-1bd8-4d9e-95e0-bfb5209c0235/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-11-29 05:29:48,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb0e2c12-1bd8-4d9e-95e0-bfb5209c0235/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2023-11-29 05:29:48,736 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:29:48,736 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:29:48,736 INFO L85 PathProgramCache]: Analyzing trace with hash 18174854, now seen corresponding path program 1 times [2023-11-29 05:29:48,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:29:48,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553123068] [2023-11-29 05:29:48,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:29:48,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:29:48,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:29:48,924 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 82 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-11-29 05:29:48,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:29:48,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553123068] [2023-11-29 05:29:48,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553123068] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:29:48,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:29:48,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 05:29:48,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769020189] [2023-11-29 05:29:48,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:29:48,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:29:48,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:29:48,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:29:48,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 05:29:48,926 INFO L87 Difference]: Start difference. First operand 350811 states and 450667 transitions. Second operand has 4 states, 4 states have (on average 39.25) internal successors, (157), 4 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 05:29:50,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:29:50,928 INFO L93 Difference]: Finished difference Result 919115 states and 1183753 transitions. [2023-11-29 05:29:50,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 05:29:50,928 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.25) internal successors, (157), 4 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 178 [2023-11-29 05:29:50,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:29:51,763 INFO L225 Difference]: With dead ends: 919115 [2023-11-29 05:29:51,763 INFO L226 Difference]: Without dead ends: 695409 [2023-11-29 05:29:52,403 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 05:29:52,404 INFO L413 NwaCegarLoop]: 291 mSDtfsCounter, 174 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 477 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:29:52,404 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [174 Valid, 477 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:29:52,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 695409 states.