./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.ufo.BOUNDED-8.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_44ad2239-7ea3-47c0-9ddd-2119ca0d0206/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44ad2239-7ea3-47c0-9ddd-2119ca0d0206/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_44ad2239-7ea3-47c0-9ddd-2119ca0d0206/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44ad2239-7ea3-47c0-9ddd-2119ca0d0206/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44ad2239-7ea3-47c0-9ddd-2119ca0d0206/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_44ad2239-7ea3-47c0-9ddd-2119ca0d0206/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 776b90327165ac118ff91f6400c534443904a40947197045cc27be476415edd1 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 00:23:57,443 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 00:23:57,505 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44ad2239-7ea3-47c0-9ddd-2119ca0d0206/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 00:23:57,509 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 00:23:57,510 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 00:23:57,533 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 00:23:57,533 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 00:23:57,534 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 00:23:57,535 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 00:23:57,535 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 00:23:57,536 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 00:23:57,536 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 00:23:57,537 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 00:23:57,537 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 00:23:57,538 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 00:23:57,538 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 00:23:57,539 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 00:23:57,539 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 00:23:57,540 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 00:23:57,540 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 00:23:57,541 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 00:23:57,542 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 00:23:57,542 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 00:23:57,543 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 00:23:57,543 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 00:23:57,544 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 00:23:57,544 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 00:23:57,544 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 00:23:57,545 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 00:23:57,545 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 00:23:57,545 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 00:23:57,546 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 00:23:57,546 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 00:23:57,546 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 00:23:57,547 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 00:23:57,547 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 00:23:57,547 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 00:23:57,547 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 00:23:57,547 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 00:23:57,548 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 00:23:57,548 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 00:23:57,548 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 00:23:57,548 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_44ad2239-7ea3-47c0-9ddd-2119ca0d0206/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44ad2239-7ea3-47c0-9ddd-2119ca0d0206/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 776b90327165ac118ff91f6400c534443904a40947197045cc27be476415edd1 [2023-11-29 00:23:57,764 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 00:23:57,785 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 00:23:57,788 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 00:23:57,789 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 00:23:57,790 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 00:23:57,791 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44ad2239-7ea3-47c0-9ddd-2119ca0d0206/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c [2023-11-29 00:24:00,532 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 00:24:00,766 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 00:24:00,767 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44ad2239-7ea3-47c0-9ddd-2119ca0d0206/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c [2023-11-29 00:24:00,782 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44ad2239-7ea3-47c0-9ddd-2119ca0d0206/bin/uautomizer-verify-BQ2R08f2Ya/data/d19241779/744f6343ad4a4e6f9952c59e75c17907/FLAG976d21b8c [2023-11-29 00:24:00,797 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44ad2239-7ea3-47c0-9ddd-2119ca0d0206/bin/uautomizer-verify-BQ2R08f2Ya/data/d19241779/744f6343ad4a4e6f9952c59e75c17907 [2023-11-29 00:24:00,799 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 00:24:00,801 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 00:24:00,802 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 00:24:00,802 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 00:24:00,807 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 00:24:00,808 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 12:24:00" (1/1) ... [2023-11-29 00:24:00,809 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@114c7663 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:24:00, skipping insertion in model container [2023-11-29 00:24:00,809 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 12:24:00" (1/1) ... [2023-11-29 00:24:00,872 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 00:24:01,127 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_44ad2239-7ea3-47c0-9ddd-2119ca0d0206/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c[12832,12845] [2023-11-29 00:24:01,198 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 00:24:01,215 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 00:24:01,288 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_44ad2239-7ea3-47c0-9ddd-2119ca0d0206/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c[12832,12845] [2023-11-29 00:24:01,324 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 00:24:01,343 INFO L206 MainTranslator]: Completed translation [2023-11-29 00:24:01,343 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:24:01 WrapperNode [2023-11-29 00:24:01,343 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 00:24:01,344 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 00:24:01,344 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 00:24:01,344 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 00:24:01,350 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:24:01" (1/1) ... [2023-11-29 00:24:01,367 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:24:01" (1/1) ... [2023-11-29 00:24:01,416 INFO L138 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1347 [2023-11-29 00:24:01,416 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 00:24:01,417 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 00:24:01,417 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 00:24:01,417 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 00:24:01,429 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:24:01" (1/1) ... [2023-11-29 00:24:01,429 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:24:01" (1/1) ... [2023-11-29 00:24:01,436 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:24:01" (1/1) ... [2023-11-29 00:24:01,463 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 00:24:01,463 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:24:01" (1/1) ... [2023-11-29 00:24:01,463 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:24:01" (1/1) ... [2023-11-29 00:24:01,487 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:24:01" (1/1) ... [2023-11-29 00:24:01,500 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:24:01" (1/1) ... [2023-11-29 00:24:01,509 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:24:01" (1/1) ... [2023-11-29 00:24:01,547 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:24:01" (1/1) ... [2023-11-29 00:24:01,566 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 00:24:01,567 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 00:24:01,567 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 00:24:01,567 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 00:24:01,568 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:24:01" (1/1) ... [2023-11-29 00:24:01,574 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 00:24:01,585 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44ad2239-7ea3-47c0-9ddd-2119ca0d0206/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:24:01,597 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44ad2239-7ea3-47c0-9ddd-2119ca0d0206/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 00:24:01,605 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44ad2239-7ea3-47c0-9ddd-2119ca0d0206/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 00:24:01,650 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 00:24:01,650 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 00:24:01,651 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 00:24:01,651 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 00:24:01,805 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 00:24:01,807 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 00:24:02,701 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 00:24:02,758 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 00:24:02,759 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-29 00:24:02,759 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 12:24:02 BoogieIcfgContainer [2023-11-29 00:24:02,759 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 00:24:02,762 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 00:24:02,762 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 00:24:02,765 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 00:24:02,765 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 12:24:00" (1/3) ... [2023-11-29 00:24:02,766 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c57ccb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 12:24:02, skipping insertion in model container [2023-11-29 00:24:02,766 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:24:01" (2/3) ... [2023-11-29 00:24:02,766 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c57ccb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 12:24:02, skipping insertion in model container [2023-11-29 00:24:02,767 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 12:24:02" (3/3) ... [2023-11-29 00:24:02,768 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_floodmax.4.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c [2023-11-29 00:24:02,787 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 00:24:02,787 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 00:24:02,847 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 00:24:02,853 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;@3f5a31fe, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 00:24:02,854 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-29 00:24:02,860 INFO L276 IsEmpty]: Start isEmpty. Operand has 324 states, 315 states have (on average 1.8095238095238095) internal successors, (570), 323 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:24:02,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-11-29 00:24:02,877 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:24:02,878 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:24:02,879 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:24:02,884 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:24:02,884 INFO L85 PathProgramCache]: Analyzing trace with hash 1414953681, now seen corresponding path program 1 times [2023-11-29 00:24:02,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:24:02,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834396263] [2023-11-29 00:24:02,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:24:02,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:24:03,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:24:03,344 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 00:24:03,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:24:03,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834396263] [2023-11-29 00:24:03,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834396263] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:24:03,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:24:03,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:24:03,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153168434] [2023-11-29 00:24:03,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:24:03,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:24:03,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:24:03,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:24:03,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:24:03,382 INFO L87 Difference]: Start difference. First operand has 324 states, 315 states have (on average 1.8095238095238095) internal successors, (570), 323 states have internal predecessors, (570), 0 states have call successors, (0), 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 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:24:03,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:24:03,480 INFO L93 Difference]: Finished difference Result 583 states and 987 transitions. [2023-11-29 00:24:03,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:24:03,482 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 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 110 [2023-11-29 00:24:03,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:24:03,500 INFO L225 Difference]: With dead ends: 583 [2023-11-29 00:24:03,500 INFO L226 Difference]: Without dead ends: 430 [2023-11-29 00:24:03,504 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 00:24:03,507 INFO L413 NwaCegarLoop]: 722 mSDtfsCounter, 221 mSDsluCounter, 488 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 1210 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:24:03,509 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [221 Valid, 1210 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:24:03,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430 states. [2023-11-29 00:24:03,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430 to 428. [2023-11-29 00:24:03,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 428 states, 427 states have (on average 1.6370023419203747) internal successors, (699), 427 states have internal predecessors, (699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:24:03,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 699 transitions. [2023-11-29 00:24:03,572 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 699 transitions. Word has length 110 [2023-11-29 00:24:03,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:24:03,573 INFO L495 AbstractCegarLoop]: Abstraction has 428 states and 699 transitions. [2023-11-29 00:24:03,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:24:03,573 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 699 transitions. [2023-11-29 00:24:03,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-11-29 00:24:03,578 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:24:03,578 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:24:03,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 00:24:03,578 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:24:03,579 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:24:03,579 INFO L85 PathProgramCache]: Analyzing trace with hash 512229007, now seen corresponding path program 1 times [2023-11-29 00:24:03,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:24:03,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609456902] [2023-11-29 00:24:03,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:24:03,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:24:03,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:24:03,746 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 00:24:03,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:24:03,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609456902] [2023-11-29 00:24:03,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609456902] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:24:03,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:24:03,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:24:03,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638411861] [2023-11-29 00:24:03,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:24:03,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:24:03,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:24:03,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:24:03,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:24:03,750 INFO L87 Difference]: Start difference. First operand 428 states and 699 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 00:24:03,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:24:03,782 INFO L93 Difference]: Finished difference Result 656 states and 1072 transitions. [2023-11-29 00:24:03,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:24:03,783 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 113 [2023-11-29 00:24:03,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:24:03,788 INFO L225 Difference]: With dead ends: 656 [2023-11-29 00:24:03,788 INFO L226 Difference]: Without dead ends: 530 [2023-11-29 00:24:03,789 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 00:24:03,791 INFO L413 NwaCegarLoop]: 669 mSDtfsCounter, 187 mSDsluCounter, 479 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 1148 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 00:24:03,791 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [187 Valid, 1148 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:24:03,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 530 states. [2023-11-29 00:24:03,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 530 to 528. [2023-11-29 00:24:03,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 528 states, 527 states have (on average 1.635673624288425) internal successors, (862), 527 states have internal predecessors, (862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:24:03,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 528 states to 528 states and 862 transitions. [2023-11-29 00:24:03,816 INFO L78 Accepts]: Start accepts. Automaton has 528 states and 862 transitions. Word has length 113 [2023-11-29 00:24:03,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:24:03,817 INFO L495 AbstractCegarLoop]: Abstraction has 528 states and 862 transitions. [2023-11-29 00:24:03,817 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 00:24:03,817 INFO L276 IsEmpty]: Start isEmpty. Operand 528 states and 862 transitions. [2023-11-29 00:24:03,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-11-29 00:24:03,819 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:24:03,819 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:24:03,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 00:24:03,820 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:24:03,820 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:24:03,820 INFO L85 PathProgramCache]: Analyzing trace with hash 850243325, now seen corresponding path program 1 times [2023-11-29 00:24:03,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:24:03,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782261879] [2023-11-29 00:24:03,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:24:03,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:24:03,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:24:03,940 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 00:24:03,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:24:03,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782261879] [2023-11-29 00:24:03,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782261879] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:24:03,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:24:03,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:24:03,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380577815] [2023-11-29 00:24:03,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:24:03,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:24:03,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:24:03,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:24:03,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:24:03,944 INFO L87 Difference]: Start difference. First operand 528 states and 862 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 00:24:03,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:24:03,971 INFO L93 Difference]: Finished difference Result 1177 states and 1915 transitions. [2023-11-29 00:24:03,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:24:03,971 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 113 [2023-11-29 00:24:03,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:24:03,977 INFO L225 Difference]: With dead ends: 1177 [2023-11-29 00:24:03,977 INFO L226 Difference]: Without dead ends: 839 [2023-11-29 00:24:03,979 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 00:24:03,980 INFO L413 NwaCegarLoop]: 645 mSDtfsCounter, 180 mSDsluCounter, 477 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 1122 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 00:24:03,981 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [180 Valid, 1122 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:24:03,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 839 states. [2023-11-29 00:24:03,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 839 to 837. [2023-11-29 00:24:03,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 837 states, 836 states have (on average 1.625598086124402) internal successors, (1359), 836 states have internal predecessors, (1359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:24:04,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 837 states to 837 states and 1359 transitions. [2023-11-29 00:24:04,001 INFO L78 Accepts]: Start accepts. Automaton has 837 states and 1359 transitions. Word has length 113 [2023-11-29 00:24:04,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:24:04,001 INFO L495 AbstractCegarLoop]: Abstraction has 837 states and 1359 transitions. [2023-11-29 00:24:04,002 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 00:24:04,002 INFO L276 IsEmpty]: Start isEmpty. Operand 837 states and 1359 transitions. [2023-11-29 00:24:04,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-11-29 00:24:04,004 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:24:04,004 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:24:04,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 00:24:04,004 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:24:04,004 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:24:04,005 INFO L85 PathProgramCache]: Analyzing trace with hash -1504406523, now seen corresponding path program 1 times [2023-11-29 00:24:04,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:24:04,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442706608] [2023-11-29 00:24:04,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:24:04,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:24:04,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:24:04,129 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 00:24:04,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:24:04,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442706608] [2023-11-29 00:24:04,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442706608] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:24:04,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:24:04,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:24:04,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400407471] [2023-11-29 00:24:04,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:24:04,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:24:04,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:24:04,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:24:04,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:24:04,132 INFO L87 Difference]: Start difference. First operand 837 states and 1359 transitions. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:24:04,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:24:04,165 INFO L93 Difference]: Finished difference Result 1453 states and 2359 transitions. [2023-11-29 00:24:04,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:24:04,165 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 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 116 [2023-11-29 00:24:04,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:24:04,172 INFO L225 Difference]: With dead ends: 1453 [2023-11-29 00:24:04,173 INFO L226 Difference]: Without dead ends: 1115 [2023-11-29 00:24:04,174 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 00:24:04,175 INFO L413 NwaCegarLoop]: 641 mSDtfsCounter, 181 mSDsluCounter, 480 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 1121 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 00:24:04,175 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [181 Valid, 1121 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:24:04,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1115 states. [2023-11-29 00:24:04,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1115 to 1113. [2023-11-29 00:24:04,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1113 states, 1112 states have (on average 1.620503597122302) internal successors, (1802), 1112 states have internal predecessors, (1802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:24:04,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1113 states to 1113 states and 1802 transitions. [2023-11-29 00:24:04,208 INFO L78 Accepts]: Start accepts. Automaton has 1113 states and 1802 transitions. Word has length 116 [2023-11-29 00:24:04,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:24:04,209 INFO L495 AbstractCegarLoop]: Abstraction has 1113 states and 1802 transitions. [2023-11-29 00:24:04,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:24:04,209 INFO L276 IsEmpty]: Start isEmpty. Operand 1113 states and 1802 transitions. [2023-11-29 00:24:04,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-11-29 00:24:04,211 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:24:04,211 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:24:04,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 00:24:04,211 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:24:04,212 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:24:04,212 INFO L85 PathProgramCache]: Analyzing trace with hash 879320951, now seen corresponding path program 1 times [2023-11-29 00:24:04,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:24:04,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220333069] [2023-11-29 00:24:04,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:24:04,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:24:04,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:24:04,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:24:04,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:24:04,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220333069] [2023-11-29 00:24:04,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220333069] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:24:04,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:24:04,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:24:04,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349158648] [2023-11-29 00:24:04,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:24:04,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:24:04,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:24:04,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:24:04,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:24:04,332 INFO L87 Difference]: Start difference. First operand 1113 states and 1802 transitions. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:24:04,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:24:04,373 INFO L93 Difference]: Finished difference Result 2842 states and 4579 transitions. [2023-11-29 00:24:04,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:24:04,373 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 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 116 [2023-11-29 00:24:04,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:24:04,384 INFO L225 Difference]: With dead ends: 2842 [2023-11-29 00:24:04,384 INFO L226 Difference]: Without dead ends: 1937 [2023-11-29 00:24:04,386 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 00:24:04,387 INFO L413 NwaCegarLoop]: 618 mSDtfsCounter, 174 mSDsluCounter, 478 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 1096 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 00:24:04,387 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [174 Valid, 1096 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:24:04,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1937 states. [2023-11-29 00:24:04,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1937 to 1935. [2023-11-29 00:24:04,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1935 states, 1934 states have (on average 1.6049638055842812) internal successors, (3104), 1934 states have internal predecessors, (3104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:24:04,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1935 states to 1935 states and 3104 transitions. [2023-11-29 00:24:04,437 INFO L78 Accepts]: Start accepts. Automaton has 1935 states and 3104 transitions. Word has length 116 [2023-11-29 00:24:04,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:24:04,438 INFO L495 AbstractCegarLoop]: Abstraction has 1935 states and 3104 transitions. [2023-11-29 00:24:04,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:24:04,438 INFO L276 IsEmpty]: Start isEmpty. Operand 1935 states and 3104 transitions. [2023-11-29 00:24:04,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2023-11-29 00:24:04,440 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:24:04,440 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:24:04,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 00:24:04,440 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:24:04,441 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:24:04,441 INFO L85 PathProgramCache]: Analyzing trace with hash 200690089, now seen corresponding path program 1 times [2023-11-29 00:24:04,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:24:04,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181375368] [2023-11-29 00:24:04,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:24:04,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:24:04,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:24:04,571 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 00:24:04,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:24:04,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181375368] [2023-11-29 00:24:04,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181375368] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:24:04,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:24:04,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:24:04,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116948053] [2023-11-29 00:24:04,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:24:04,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:24:04,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:24:04,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:24:04,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:24:04,575 INFO L87 Difference]: Start difference. First operand 1935 states and 3104 transitions. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:24:04,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:24:04,627 INFO L93 Difference]: Finished difference Result 3529 states and 5666 transitions. [2023-11-29 00:24:04,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:24:04,628 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 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 119 [2023-11-29 00:24:04,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:24:04,643 INFO L225 Difference]: With dead ends: 3529 [2023-11-29 00:24:04,643 INFO L226 Difference]: Without dead ends: 2624 [2023-11-29 00:24:04,645 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 00:24:04,646 INFO L413 NwaCegarLoop]: 613 mSDtfsCounter, 175 mSDsluCounter, 481 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 1094 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 00:24:04,647 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 1094 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:24:04,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2624 states. [2023-11-29 00:24:04,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2624 to 2622. [2023-11-29 00:24:04,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2622 states, 2621 states have (on average 1.5986264784433422) internal successors, (4190), 2621 states have internal predecessors, (4190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:24:04,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2622 states to 2622 states and 4190 transitions. [2023-11-29 00:24:04,730 INFO L78 Accepts]: Start accepts. Automaton has 2622 states and 4190 transitions. Word has length 119 [2023-11-29 00:24:04,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:24:04,731 INFO L495 AbstractCegarLoop]: Abstraction has 2622 states and 4190 transitions. [2023-11-29 00:24:04,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:24:04,731 INFO L276 IsEmpty]: Start isEmpty. Operand 2622 states and 4190 transitions. [2023-11-29 00:24:04,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2023-11-29 00:24:04,733 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:24:04,733 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:24:04,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 00:24:04,733 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:24:04,734 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:24:04,734 INFO L85 PathProgramCache]: Analyzing trace with hash -582704553, now seen corresponding path program 1 times [2023-11-29 00:24:04,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:24:04,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330264051] [2023-11-29 00:24:04,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:24:04,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:24:04,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:24:04,853 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 00:24:04,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:24:04,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330264051] [2023-11-29 00:24:04,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330264051] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:24:04,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:24:04,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:24:04,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633112054] [2023-11-29 00:24:04,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:24:04,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:24:04,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:24:04,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:24:04,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:24:04,855 INFO L87 Difference]: Start difference. First operand 2622 states and 4190 transitions. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:24:04,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:24:04,922 INFO L93 Difference]: Finished difference Result 7171 states and 11383 transitions. [2023-11-29 00:24:04,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:24:04,923 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 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 119 [2023-11-29 00:24:04,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:24:04,949 INFO L225 Difference]: With dead ends: 7171 [2023-11-29 00:24:04,950 INFO L226 Difference]: Without dead ends: 4775 [2023-11-29 00:24:04,953 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 00:24:04,954 INFO L413 NwaCegarLoop]: 519 mSDtfsCounter, 168 mSDsluCounter, 479 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 998 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 00:24:04,954 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 998 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:24:04,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4775 states. [2023-11-29 00:24:05,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4775 to 4773. [2023-11-29 00:24:05,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4773 states, 4772 states have (on average 1.577745180217938) internal successors, (7529), 4772 states have internal predecessors, (7529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:24:05,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4773 states to 4773 states and 7529 transitions. [2023-11-29 00:24:05,105 INFO L78 Accepts]: Start accepts. Automaton has 4773 states and 7529 transitions. Word has length 119 [2023-11-29 00:24:05,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:24:05,105 INFO L495 AbstractCegarLoop]: Abstraction has 4773 states and 7529 transitions. [2023-11-29 00:24:05,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:24:05,105 INFO L276 IsEmpty]: Start isEmpty. Operand 4773 states and 7529 transitions. [2023-11-29 00:24:05,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-11-29 00:24:05,107 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:24:05,107 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:24:05,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-29 00:24:05,108 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:24:05,108 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:24:05,108 INFO L85 PathProgramCache]: Analyzing trace with hash -1787106275, now seen corresponding path program 1 times [2023-11-29 00:24:05,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:24:05,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535511211] [2023-11-29 00:24:05,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:24:05,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:24:05,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:24:05,285 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 00:24:05,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:24:05,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535511211] [2023-11-29 00:24:05,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535511211] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:24:05,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:24:05,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 00:24:05,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56933128] [2023-11-29 00:24:05,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:24:05,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 00:24:05,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:24:05,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 00:24:05,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-29 00:24:05,288 INFO L87 Difference]: Start difference. First operand 4773 states and 7529 transitions. Second operand has 6 states, 6 states have (on average 20.333333333333332) internal successors, (122), 6 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:24:05,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:24:05,707 INFO L93 Difference]: Finished difference Result 29512 states and 46822 transitions. [2023-11-29 00:24:05,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 00:24:05,708 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 20.333333333333332) internal successors, (122), 6 states have internal predecessors, (122), 0 states have call successors, (0), 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 122 [2023-11-29 00:24:05,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:24:05,806 INFO L225 Difference]: With dead ends: 29512 [2023-11-29 00:24:05,806 INFO L226 Difference]: Without dead ends: 24845 [2023-11-29 00:24:05,815 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-11-29 00:24:05,816 INFO L413 NwaCegarLoop]: 508 mSDtfsCounter, 2199 mSDsluCounter, 3015 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2199 SdHoareTripleChecker+Valid, 3523 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 00:24:05,816 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2199 Valid, 3523 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 00:24:05,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24845 states. [2023-11-29 00:24:06,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24845 to 9006. [2023-11-29 00:24:06,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9006 states, 9005 states have (on average 1.5822320932815104) internal successors, (14248), 9005 states have internal predecessors, (14248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:24:06,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9006 states to 9006 states and 14248 transitions. [2023-11-29 00:24:06,157 INFO L78 Accepts]: Start accepts. Automaton has 9006 states and 14248 transitions. Word has length 122 [2023-11-29 00:24:06,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:24:06,157 INFO L495 AbstractCegarLoop]: Abstraction has 9006 states and 14248 transitions. [2023-11-29 00:24:06,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.333333333333332) internal successors, (122), 6 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:24:06,157 INFO L276 IsEmpty]: Start isEmpty. Operand 9006 states and 14248 transitions. [2023-11-29 00:24:06,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-11-29 00:24:06,158 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:24:06,159 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:24:06,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-29 00:24:06,159 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:24:06,159 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:24:06,159 INFO L85 PathProgramCache]: Analyzing trace with hash 367218292, now seen corresponding path program 1 times [2023-11-29 00:24:06,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:24:06,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838515913] [2023-11-29 00:24:06,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:24:06,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:24:06,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:24:06,263 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 00:24:06,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:24:06,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838515913] [2023-11-29 00:24:06,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838515913] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:24:06,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:24:06,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 00:24:06,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410028022] [2023-11-29 00:24:06,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:24:06,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:24:06,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:24:06,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:24:06,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:24:06,265 INFO L87 Difference]: Start difference. First operand 9006 states and 14248 transitions. Second operand has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 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 00:24:06,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:24:06,504 INFO L93 Difference]: Finished difference Result 29290 states and 46412 transitions. [2023-11-29 00:24:06,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 00:24:06,505 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 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 123 [2023-11-29 00:24:06,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:24:06,537 INFO L225 Difference]: With dead ends: 29290 [2023-11-29 00:24:06,537 INFO L226 Difference]: Without dead ends: 20510 [2023-11-29 00:24:06,547 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 00:24:06,547 INFO L413 NwaCegarLoop]: 508 mSDtfsCounter, 597 mSDsluCounter, 1187 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 597 SdHoareTripleChecker+Valid, 1695 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 00:24:06,548 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [597 Valid, 1695 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:24:06,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20510 states. [2023-11-29 00:24:06,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20510 to 14704. [2023-11-29 00:24:06,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14704 states, 14703 states have (on average 1.5775692035638986) internal successors, (23195), 14703 states have internal predecessors, (23195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:24:06,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14704 states to 14704 states and 23195 transitions. [2023-11-29 00:24:06,822 INFO L78 Accepts]: Start accepts. Automaton has 14704 states and 23195 transitions. Word has length 123 [2023-11-29 00:24:06,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:24:06,822 INFO L495 AbstractCegarLoop]: Abstraction has 14704 states and 23195 transitions. [2023-11-29 00:24:06,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 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 00:24:06,823 INFO L276 IsEmpty]: Start isEmpty. Operand 14704 states and 23195 transitions. [2023-11-29 00:24:06,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-11-29 00:24:06,824 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:24:06,824 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:24:06,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-29 00:24:06,824 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:24:06,825 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:24:06,825 INFO L85 PathProgramCache]: Analyzing trace with hash -1011001031, now seen corresponding path program 1 times [2023-11-29 00:24:06,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:24:06,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934741037] [2023-11-29 00:24:06,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:24:06,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:24:06,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:24:06,897 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 00:24:06,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:24:06,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934741037] [2023-11-29 00:24:06,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934741037] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:24:06,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:24:06,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:24:06,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917246024] [2023-11-29 00:24:06,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:24:06,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:24:06,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:24:06,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:24:06,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:24:06,900 INFO L87 Difference]: Start difference. First operand 14704 states and 23195 transitions. Second operand has 3 states, 3 states have (on average 41.0) 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 00:24:07,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:24:07,061 INFO L93 Difference]: Finished difference Result 27914 states and 44087 transitions. [2023-11-29 00:24:07,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:24:07,062 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.0) 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 123 [2023-11-29 00:24:07,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:24:07,099 INFO L225 Difference]: With dead ends: 27914 [2023-11-29 00:24:07,099 INFO L226 Difference]: Without dead ends: 20148 [2023-11-29 00:24:07,109 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 00:24:07,110 INFO L413 NwaCegarLoop]: 592 mSDtfsCounter, 169 mSDsluCounter, 482 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 1074 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 00:24:07,110 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 1074 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:24:07,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20148 states. [2023-11-29 00:24:07,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20148 to 20146. [2023-11-29 00:24:07,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20146 states, 20145 states have (on average 1.567783569123852) internal successors, (31583), 20145 states have internal predecessors, (31583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:24:07,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20146 states to 20146 states and 31583 transitions. [2023-11-29 00:24:07,533 INFO L78 Accepts]: Start accepts. Automaton has 20146 states and 31583 transitions. Word has length 123 [2023-11-29 00:24:07,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:24:07,534 INFO L495 AbstractCegarLoop]: Abstraction has 20146 states and 31583 transitions. [2023-11-29 00:24:07,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.0) 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 00:24:07,534 INFO L276 IsEmpty]: Start isEmpty. Operand 20146 states and 31583 transitions. [2023-11-29 00:24:07,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-11-29 00:24:07,536 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:24:07,536 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:24:07,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-29 00:24:07,537 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:24:07,537 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:24:07,538 INFO L85 PathProgramCache]: Analyzing trace with hash -1311978759, now seen corresponding path program 1 times [2023-11-29 00:24:07,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:24:07,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835979477] [2023-11-29 00:24:07,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:24:07,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:24:07,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:24:08,075 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 00:24:08,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:24:08,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835979477] [2023-11-29 00:24:08,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835979477] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:24:08,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:24:08,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 00:24:08,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492454317] [2023-11-29 00:24:08,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:24:08,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 00:24:08,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:24:08,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 00:24:08,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 00:24:08,079 INFO L87 Difference]: Start difference. First operand 20146 states and 31583 transitions. Second operand has 5 states, 5 states have (on average 26.4) internal successors, (132), 5 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:24:08,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:24:08,323 INFO L93 Difference]: Finished difference Result 33498 states and 52178 transitions. [2023-11-29 00:24:08,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 00:24:08,323 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.4) internal successors, (132), 5 states have internal predecessors, (132), 0 states have call successors, (0), 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 132 [2023-11-29 00:24:08,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:24:08,394 INFO L225 Difference]: With dead ends: 33498 [2023-11-29 00:24:08,394 INFO L226 Difference]: Without dead ends: 33496 [2023-11-29 00:24:08,403 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 00:24:08,404 INFO L413 NwaCegarLoop]: 637 mSDtfsCounter, 391 mSDsluCounter, 1662 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 391 SdHoareTripleChecker+Valid, 2299 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 00:24:08,404 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [391 Valid, 2299 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:24:08,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33496 states. [2023-11-29 00:24:08,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33496 to 20466. [2023-11-29 00:24:08,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20466 states, 20465 states have (on average 1.5549474712924505) internal successors, (31822), 20465 states have internal predecessors, (31822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:24:08,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20466 states to 20466 states and 31822 transitions. [2023-11-29 00:24:08,787 INFO L78 Accepts]: Start accepts. Automaton has 20466 states and 31822 transitions. Word has length 132 [2023-11-29 00:24:08,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:24:08,787 INFO L495 AbstractCegarLoop]: Abstraction has 20466 states and 31822 transitions. [2023-11-29 00:24:08,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.4) internal successors, (132), 5 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:24:08,788 INFO L276 IsEmpty]: Start isEmpty. Operand 20466 states and 31822 transitions. [2023-11-29 00:24:08,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-11-29 00:24:08,791 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:24:08,791 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:24:08,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-29 00:24:08,792 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:24:08,792 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:24:08,792 INFO L85 PathProgramCache]: Analyzing trace with hash 695692182, now seen corresponding path program 1 times [2023-11-29 00:24:08,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:24:08,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509123842] [2023-11-29 00:24:08,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:24:08,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:24:08,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:24:08,972 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 00:24:08,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:24:08,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509123842] [2023-11-29 00:24:08,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509123842] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:24:08,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:24:08,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 00:24:08,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840873184] [2023-11-29 00:24:08,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:24:08,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 00:24:08,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:24:09,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 00:24:09,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 00:24:09,033 INFO L87 Difference]: Start difference. First operand 20466 states and 31822 transitions. Second operand has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 6 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:24:09,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:24:09,322 INFO L93 Difference]: Finished difference Result 71515 states and 111394 transitions. [2023-11-29 00:24:09,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 00:24:09,322 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 6 states have internal predecessors, (161), 0 states have call successors, (0), 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 00:24:09,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:24:09,385 INFO L225 Difference]: With dead ends: 71515 [2023-11-29 00:24:09,385 INFO L226 Difference]: Without dead ends: 58109 [2023-11-29 00:24:09,407 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-11-29 00:24:09,408 INFO L413 NwaCegarLoop]: 710 mSDtfsCounter, 1330 mSDsluCounter, 1902 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1330 SdHoareTripleChecker+Valid, 2612 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 00:24:09,408 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1330 Valid, 2612 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 00:24:09,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58109 states. [2023-11-29 00:24:10,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58109 to 34938. [2023-11-29 00:24:10,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34938 states, 34937 states have (on average 1.5517073589604145) internal successors, (54212), 34937 states have internal predecessors, (54212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:24:10,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34938 states to 34938 states and 54212 transitions. [2023-11-29 00:24:10,139 INFO L78 Accepts]: Start accepts. Automaton has 34938 states and 54212 transitions. Word has length 162 [2023-11-29 00:24:10,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:24:10,140 INFO L495 AbstractCegarLoop]: Abstraction has 34938 states and 54212 transitions. [2023-11-29 00:24:10,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 6 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:24:10,140 INFO L276 IsEmpty]: Start isEmpty. Operand 34938 states and 54212 transitions. [2023-11-29 00:24:10,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-11-29 00:24:10,145 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:24:10,145 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:24:10,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-29 00:24:10,145 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:24:10,146 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:24:10,146 INFO L85 PathProgramCache]: Analyzing trace with hash 1890482380, now seen corresponding path program 1 times [2023-11-29 00:24:10,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:24:10,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543825903] [2023-11-29 00:24:10,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:24:10,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:24:10,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:24:10,388 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 00:24:10,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:24:10,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543825903] [2023-11-29 00:24:10,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543825903] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:24:10,388 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:24:10,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 00:24:10,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277970231] [2023-11-29 00:24:10,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:24:10,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 00:24:10,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:24:10,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 00:24:10,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 00:24:10,390 INFO L87 Difference]: Start difference. First operand 34938 states and 54212 transitions. Second operand has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 6 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:24:10,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:24:10,735 INFO L93 Difference]: Finished difference Result 81757 states and 127299 transitions. [2023-11-29 00:24:10,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 00:24:10,736 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 6 states have internal predecessors, (161), 0 states have call successors, (0), 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 00:24:10,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:24:10,832 INFO L225 Difference]: With dead ends: 81757 [2023-11-29 00:24:10,833 INFO L226 Difference]: Without dead ends: 68351 [2023-11-29 00:24:10,864 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-11-29 00:24:10,865 INFO L413 NwaCegarLoop]: 711 mSDtfsCounter, 1265 mSDsluCounter, 2204 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1265 SdHoareTripleChecker+Valid, 2915 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 00:24:10,865 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1265 Valid, 2915 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 00:24:10,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68351 states. [2023-11-29 00:24:11,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68351 to 52860. [2023-11-29 00:24:11,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52860 states, 52859 states have (on average 1.550918481242551) internal successors, (81980), 52859 states have internal predecessors, (81980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:24:11,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52860 states to 52860 states and 81980 transitions. [2023-11-29 00:24:11,768 INFO L78 Accepts]: Start accepts. Automaton has 52860 states and 81980 transitions. Word has length 162 [2023-11-29 00:24:11,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:24:11,768 INFO L495 AbstractCegarLoop]: Abstraction has 52860 states and 81980 transitions. [2023-11-29 00:24:11,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 6 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:24:11,768 INFO L276 IsEmpty]: Start isEmpty. Operand 52860 states and 81980 transitions. [2023-11-29 00:24:11,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-11-29 00:24:11,772 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:24:11,772 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:24:11,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-29 00:24:11,772 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:24:11,773 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:24:11,773 INFO L85 PathProgramCache]: Analyzing trace with hash -1721533206, now seen corresponding path program 1 times [2023-11-29 00:24:11,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:24:11,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727617875] [2023-11-29 00:24:11,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:24:11,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:24:11,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:24:11,992 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 00:24:11,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:24:11,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727617875] [2023-11-29 00:24:11,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727617875] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:24:11,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:24:11,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 00:24:11,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531729992] [2023-11-29 00:24:11,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:24:11,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 00:24:11,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:24:11,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 00:24:11,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 00:24:11,995 INFO L87 Difference]: Start difference. First operand 52860 states and 81980 transitions. Second operand has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 6 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:24:12,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:24:12,460 INFO L93 Difference]: Finished difference Result 89381 states and 139167 transitions. [2023-11-29 00:24:12,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 00:24:12,461 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 6 states have internal predecessors, (161), 0 states have call successors, (0), 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 00:24:12,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:24:12,531 INFO L225 Difference]: With dead ends: 89381 [2023-11-29 00:24:12,531 INFO L226 Difference]: Without dead ends: 75975 [2023-11-29 00:24:12,547 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-11-29 00:24:12,548 INFO L413 NwaCegarLoop]: 725 mSDtfsCounter, 1181 mSDsluCounter, 2333 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1181 SdHoareTripleChecker+Valid, 3058 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 00:24:12,548 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1181 Valid, 3058 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 00:24:12,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75975 states. [2023-11-29 00:24:13,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75975 to 64026. [2023-11-29 00:24:13,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64026 states, 64025 states have (on average 1.5515033190160095) internal successors, (99335), 64025 states have internal predecessors, (99335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:24:13,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64026 states to 64026 states and 99335 transitions. [2023-11-29 00:24:13,399 INFO L78 Accepts]: Start accepts. Automaton has 64026 states and 99335 transitions. Word has length 162 [2023-11-29 00:24:13,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:24:13,399 INFO L495 AbstractCegarLoop]: Abstraction has 64026 states and 99335 transitions. [2023-11-29 00:24:13,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 6 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:24:13,399 INFO L276 IsEmpty]: Start isEmpty. Operand 64026 states and 99335 transitions. [2023-11-29 00:24:13,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-11-29 00:24:13,403 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:24:13,403 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:24:13,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-29 00:24:13,403 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:24:13,404 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:24:13,404 INFO L85 PathProgramCache]: Analyzing trace with hash -806860798, now seen corresponding path program 1 times [2023-11-29 00:24:13,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:24:13,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34766291] [2023-11-29 00:24:13,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:24:13,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:24:13,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:24:13,573 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 00:24:13,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:24:13,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34766291] [2023-11-29 00:24:13,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34766291] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:24:13,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:24:13,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 00:24:13,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846431949] [2023-11-29 00:24:13,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:24:13,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 00:24:13,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:24:13,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 00:24:13,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 00:24:13,575 INFO L87 Difference]: Start difference. First operand 64026 states and 99335 transitions. Second operand has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 6 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:24:14,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:24:14,023 INFO L93 Difference]: Finished difference Result 92104 states and 143410 transitions. [2023-11-29 00:24:14,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 00:24:14,023 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 6 states have internal predecessors, (161), 0 states have call successors, (0), 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 00:24:14,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:24:14,098 INFO L225 Difference]: With dead ends: 92104 [2023-11-29 00:24:14,098 INFO L226 Difference]: Without dead ends: 83786 [2023-11-29 00:24:14,111 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-11-29 00:24:14,111 INFO L413 NwaCegarLoop]: 713 mSDtfsCounter, 1206 mSDsluCounter, 2531 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1206 SdHoareTripleChecker+Valid, 3244 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 00:24:14,112 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1206 Valid, 3244 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 00:24:14,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83786 states. [2023-11-29 00:24:14,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83786 to 72002. [2023-11-29 00:24:15,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72002 states, 72001 states have (on average 1.552436771711504) internal successors, (111777), 72001 states have internal predecessors, (111777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:24:15,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72002 states to 72002 states and 111777 transitions. [2023-11-29 00:24:15,091 INFO L78 Accepts]: Start accepts. Automaton has 72002 states and 111777 transitions. Word has length 162 [2023-11-29 00:24:15,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:24:15,092 INFO L495 AbstractCegarLoop]: Abstraction has 72002 states and 111777 transitions. [2023-11-29 00:24:15,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 6 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:24:15,092 INFO L276 IsEmpty]: Start isEmpty. Operand 72002 states and 111777 transitions. [2023-11-29 00:24:15,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2023-11-29 00:24:15,095 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:24:15,095 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:24:15,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-29 00:24:15,095 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:24:15,096 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:24:15,096 INFO L85 PathProgramCache]: Analyzing trace with hash -1353660192, now seen corresponding path program 1 times [2023-11-29 00:24:15,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:24:15,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411785977] [2023-11-29 00:24:15,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:24:15,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:24:15,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:24:15,424 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 00:24:15,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:24:15,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411785977] [2023-11-29 00:24:15,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411785977] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:24:15,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:24:15,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 00:24:15,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662244022] [2023-11-29 00:24:15,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:24:15,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:24:15,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:24:15,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:24:15,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:24:15,427 INFO L87 Difference]: Start difference. First operand 72002 states and 111777 transitions. Second operand has 4 states, 4 states have (on average 40.5) internal successors, (162), 4 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:24:16,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:24:16,039 INFO L93 Difference]: Finished difference Result 199355 states and 309468 transitions. [2023-11-29 00:24:16,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 00:24:16,040 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.5) internal successors, (162), 4 states have internal predecessors, (162), 0 states have call successors, (0), 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 00:24:16,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:24:16,177 INFO L225 Difference]: With dead ends: 199355 [2023-11-29 00:24:16,177 INFO L226 Difference]: Without dead ends: 146715 [2023-11-29 00:24:16,218 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 00:24:16,218 INFO L413 NwaCegarLoop]: 558 mSDtfsCounter, 641 mSDsluCounter, 928 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 641 SdHoareTripleChecker+Valid, 1486 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 00:24:16,218 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [641 Valid, 1486 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 00:24:16,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146715 states. [2023-11-29 00:24:17,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146715 to 124286. [2023-11-29 00:24:17,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124286 states, 124285 states have (on average 1.5504123586917167) internal successors, (192693), 124285 states have internal predecessors, (192693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:24:17,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124286 states to 124286 states and 192693 transitions. [2023-11-29 00:24:17,939 INFO L78 Accepts]: Start accepts. Automaton has 124286 states and 192693 transitions. Word has length 163 [2023-11-29 00:24:17,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:24:17,940 INFO L495 AbstractCegarLoop]: Abstraction has 124286 states and 192693 transitions. [2023-11-29 00:24:17,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.5) internal successors, (162), 4 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:24:17,940 INFO L276 IsEmpty]: Start isEmpty. Operand 124286 states and 192693 transitions. [2023-11-29 00:24:17,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2023-11-29 00:24:17,942 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:24:17,942 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:24:17,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-29 00:24:17,942 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:24:17,943 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:24:17,943 INFO L85 PathProgramCache]: Analyzing trace with hash 1021764108, now seen corresponding path program 1 times [2023-11-29 00:24:17,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:24:17,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012393039] [2023-11-29 00:24:17,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:24:17,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:24:18,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:24:18,385 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 00:24:18,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:24:18,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012393039] [2023-11-29 00:24:18,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012393039] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:24:18,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:24:18,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 00:24:18,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520755751] [2023-11-29 00:24:18,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:24:18,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:24:18,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:24:18,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:24:18,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:24:18,388 INFO L87 Difference]: Start difference. First operand 124286 states and 192693 transitions. Second operand has 4 states, 4 states have (on average 40.5) internal successors, (162), 4 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:24:19,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:24:19,634 INFO L93 Difference]: Finished difference Result 342458 states and 530980 transitions. [2023-11-29 00:24:19,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 00:24:19,635 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.5) internal successors, (162), 4 states have internal predecessors, (162), 0 states have call successors, (0), 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 00:24:19,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:24:19,900 INFO L225 Difference]: With dead ends: 342458 [2023-11-29 00:24:19,900 INFO L226 Difference]: Without dead ends: 252252 [2023-11-29 00:24:19,927 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 00:24:19,930 INFO L413 NwaCegarLoop]: 543 mSDtfsCounter, 643 mSDsluCounter, 930 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 643 SdHoareTripleChecker+Valid, 1473 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:24:19,933 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [643 Valid, 1473 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:24:20,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252252 states. [2023-11-29 00:24:22,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252252 to 213878. [2023-11-29 00:24:22,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213878 states, 213877 states have (on average 1.548502176484615) internal successors, (331189), 213877 states have internal predecessors, (331189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:24:22,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213878 states to 213878 states and 331189 transitions. [2023-11-29 00:24:22,818 INFO L78 Accepts]: Start accepts. Automaton has 213878 states and 331189 transitions. Word has length 163 [2023-11-29 00:24:22,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:24:22,819 INFO L495 AbstractCegarLoop]: Abstraction has 213878 states and 331189 transitions. [2023-11-29 00:24:22,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.5) internal successors, (162), 4 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:24:22,819 INFO L276 IsEmpty]: Start isEmpty. Operand 213878 states and 331189 transitions. [2023-11-29 00:24:22,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2023-11-29 00:24:22,821 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:24:22,821 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:24:22,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-29 00:24:22,821 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:24:22,821 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:24:22,821 INFO L85 PathProgramCache]: Analyzing trace with hash 690057007, now seen corresponding path program 1 times [2023-11-29 00:24:22,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:24:22,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352327890] [2023-11-29 00:24:22,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:24:22,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:24:22,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:24:22,936 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 00:24:22,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:24:22,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352327890] [2023-11-29 00:24:22,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352327890] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:24:22,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:24:22,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 00:24:22,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832076634] [2023-11-29 00:24:22,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:24:22,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:24:22,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:24:22,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:24:22,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:24:22,938 INFO L87 Difference]: Start difference. First operand 213878 states and 331189 transitions. Second operand has 4 states, 4 states have (on average 40.5) internal successors, (162), 4 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:24:23,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:24:23,892 INFO L93 Difference]: Finished difference Result 303491 states and 471318 transitions. [2023-11-29 00:24:23,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 00:24:23,893 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.5) internal successors, (162), 4 states have internal predecessors, (162), 0 states have call successors, (0), 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 00:24:23,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:24:24,170 INFO L225 Difference]: With dead ends: 303491 [2023-11-29 00:24:24,170 INFO L226 Difference]: Without dead ends: 258509 [2023-11-29 00:24:24,218 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 00:24:24,219 INFO L413 NwaCegarLoop]: 699 mSDtfsCounter, 343 mSDsluCounter, 1016 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 343 SdHoareTripleChecker+Valid, 1715 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:24:24,219 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [343 Valid, 1715 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:24:24,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258509 states. [2023-11-29 00:24:26,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258509 to 239673. [2023-11-29 00:24:27,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239673 states, 239672 states have (on average 1.5489126806635736) internal successors, (371231), 239672 states have internal predecessors, (371231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:24:27,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239673 states to 239673 states and 371231 transitions. [2023-11-29 00:24:27,363 INFO L78 Accepts]: Start accepts. Automaton has 239673 states and 371231 transitions. Word has length 163 [2023-11-29 00:24:27,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:24:27,364 INFO L495 AbstractCegarLoop]: Abstraction has 239673 states and 371231 transitions. [2023-11-29 00:24:27,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.5) internal successors, (162), 4 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:24:27,364 INFO L276 IsEmpty]: Start isEmpty. Operand 239673 states and 371231 transitions. [2023-11-29 00:24:27,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2023-11-29 00:24:27,366 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:24:27,366 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:24:27,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-29 00:24:27,366 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:24:27,367 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:24:27,367 INFO L85 PathProgramCache]: Analyzing trace with hash -688162316, now seen corresponding path program 1 times [2023-11-29 00:24:27,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:24:27,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499736331] [2023-11-29 00:24:27,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:24:27,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:24:27,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:24:27,777 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 00:24:27,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:24:27,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499736331] [2023-11-29 00:24:27,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499736331] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:24:27,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:24:27,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 00:24:27,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550056370] [2023-11-29 00:24:27,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:24:27,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:24:27,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:24:27,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:24:27,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:24:27,779 INFO L87 Difference]: Start difference. First operand 239673 states and 371231 transitions. Second operand has 4 states, 4 states have (on average 40.5) internal successors, (162), 4 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:24:29,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:24:29,824 INFO L93 Difference]: Finished difference Result 584757 states and 908395 transitions. [2023-11-29 00:24:29,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 00:24:29,825 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.5) internal successors, (162), 4 states have internal predecessors, (162), 0 states have call successors, (0), 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 00:24:29,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:24:30,426 INFO L225 Difference]: With dead ends: 584757 [2023-11-29 00:24:30,426 INFO L226 Difference]: Without dead ends: 433428 [2023-11-29 00:24:30,531 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 00:24:30,532 INFO L413 NwaCegarLoop]: 576 mSDtfsCounter, 624 mSDsluCounter, 910 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 624 SdHoareTripleChecker+Valid, 1486 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 00:24:30,532 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [624 Valid, 1486 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 00:24:30,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433428 states. [2023-11-29 00:24:34,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433428 to 383641. [2023-11-29 00:24:34,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383641 states, 383640 states have (on average 1.5493926597852152) internal successors, (594409), 383640 states have internal predecessors, (594409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:24:35,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383641 states to 383641 states and 594409 transitions. [2023-11-29 00:24:35,634 INFO L78 Accepts]: Start accepts. Automaton has 383641 states and 594409 transitions. Word has length 163 [2023-11-29 00:24:35,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:24:35,634 INFO L495 AbstractCegarLoop]: Abstraction has 383641 states and 594409 transitions. [2023-11-29 00:24:35,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.5) internal successors, (162), 4 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:24:35,635 INFO L276 IsEmpty]: Start isEmpty. Operand 383641 states and 594409 transitions. [2023-11-29 00:24:35,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2023-11-29 00:24:35,677 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:24:35,678 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:24:35,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-29 00:24:35,678 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:24:35,678 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:24:35,679 INFO L85 PathProgramCache]: Analyzing trace with hash 672944203, now seen corresponding path program 1 times [2023-11-29 00:24:35,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:24:35,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752395992] [2023-11-29 00:24:35,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:24:35,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:24:35,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:24:35,789 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-11-29 00:24:35,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:24:35,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752395992] [2023-11-29 00:24:35,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752395992] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:24:35,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:24:35,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:24:35,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164352360] [2023-11-29 00:24:35,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:24:35,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:24:35,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:24:35,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:24:35,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:24:35,792 INFO L87 Difference]: Start difference. First operand 383641 states and 594409 transitions. Second operand has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:24:37,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:24:37,969 INFO L93 Difference]: Finished difference Result 717313 states and 1115895 transitions. [2023-11-29 00:24:37,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:24:37,970 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 0 states have call successors, (0), 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 216 [2023-11-29 00:24:37,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:24:38,356 INFO L225 Difference]: With dead ends: 717313 [2023-11-29 00:24:38,356 INFO L226 Difference]: Without dead ends: 329274 [2023-11-29 00:24:38,486 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 00:24:38,486 INFO L413 NwaCegarLoop]: 654 mSDtfsCounter, 158 mSDsluCounter, 498 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 1152 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:24:38,486 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 1152 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:24:38,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329274 states. [2023-11-29 00:24:41,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329274 to 247689. [2023-11-29 00:24:41,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247689 states, 247688 states have (on average 1.5520816511094604) internal successors, (384432), 247688 states have internal predecessors, (384432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:24:42,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247689 states to 247689 states and 384432 transitions. [2023-11-29 00:24:42,097 INFO L78 Accepts]: Start accepts. Automaton has 247689 states and 384432 transitions. Word has length 216 [2023-11-29 00:24:42,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:24:42,097 INFO L495 AbstractCegarLoop]: Abstraction has 247689 states and 384432 transitions. [2023-11-29 00:24:42,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:24:42,098 INFO L276 IsEmpty]: Start isEmpty. Operand 247689 states and 384432 transitions. [2023-11-29 00:24:42,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2023-11-29 00:24:42,125 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:24:42,126 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:24:42,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-29 00:24:42,126 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:24:42,126 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:24:42,127 INFO L85 PathProgramCache]: Analyzing trace with hash 764543463, now seen corresponding path program 1 times [2023-11-29 00:24:42,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:24:42,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135004363] [2023-11-29 00:24:42,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:24:42,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:24:42,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:24:42,298 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2023-11-29 00:24:42,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:24:42,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135004363] [2023-11-29 00:24:42,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135004363] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:24:42,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:24:42,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:24:42,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490416005] [2023-11-29 00:24:42,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:24:42,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:24:42,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:24:42,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:24:42,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:24:42,302 INFO L87 Difference]: Start difference. First operand 247689 states and 384432 transitions. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:24:43,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:24:43,877 INFO L93 Difference]: Finished difference Result 518164 states and 805668 transitions. [2023-11-29 00:24:43,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:24:43,878 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 223 [2023-11-29 00:24:43,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:24:44,248 INFO L225 Difference]: With dead ends: 518164 [2023-11-29 00:24:44,248 INFO L226 Difference]: Without dead ends: 372044 [2023-11-29 00:24:44,341 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 00:24:44,342 INFO L413 NwaCegarLoop]: 495 mSDtfsCounter, 132 mSDsluCounter, 472 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 967 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:24:44,342 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 967 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:24:45,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372044 states. [2023-11-29 00:24:48,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372044 to 371692. [2023-11-29 00:24:48,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371692 states, 371691 states have (on average 1.5518401037420868) internal successors, (576805), 371691 states have internal predecessors, (576805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:24:49,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371692 states to 371692 states and 576805 transitions. [2023-11-29 00:24:49,609 INFO L78 Accepts]: Start accepts. Automaton has 371692 states and 576805 transitions. Word has length 223 [2023-11-29 00:24:49,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:24:49,610 INFO L495 AbstractCegarLoop]: Abstraction has 371692 states and 576805 transitions. [2023-11-29 00:24:49,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:24:49,610 INFO L276 IsEmpty]: Start isEmpty. Operand 371692 states and 576805 transitions. [2023-11-29 00:24:49,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2023-11-29 00:24:49,637 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:24:49,637 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:24:49,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-29 00:24:49,637 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:24:49,638 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:24:49,638 INFO L85 PathProgramCache]: Analyzing trace with hash -1491198744, now seen corresponding path program 1 times [2023-11-29 00:24:49,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:24:49,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042963045] [2023-11-29 00:24:49,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:24:49,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:24:49,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:24:49,912 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 84 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-11-29 00:24:49,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:24:49,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042963045] [2023-11-29 00:24:49,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042963045] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:24:49,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:24:49,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 00:24:49,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387734571] [2023-11-29 00:24:49,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:24:49,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 00:24:49,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:24:49,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 00:24:49,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 00:24:49,914 INFO L87 Difference]: Start difference. First operand 371692 states and 576805 transitions. Second operand has 6 states, 6 states have (on average 34.0) internal successors, (204), 6 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:24:51,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:24:51,871 INFO L93 Difference]: Finished difference Result 728354 states and 1140299 transitions. [2023-11-29 00:24:51,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 00:24:51,872 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 34.0) internal successors, (204), 6 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 223 [2023-11-29 00:24:51,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:24:52,559 INFO L225 Difference]: With dead ends: 728354 [2023-11-29 00:24:52,559 INFO L226 Difference]: Without dead ends: 588411 [2023-11-29 00:24:53,118 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-11-29 00:24:53,118 INFO L413 NwaCegarLoop]: 694 mSDtfsCounter, 1244 mSDsluCounter, 1870 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1244 SdHoareTripleChecker+Valid, 2564 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 00:24:53,119 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1244 Valid, 2564 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 00:24:53,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 588411 states. [2023-11-29 00:24:58,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 588411 to 587775. [2023-11-29 00:24:58,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 587775 states, 587774 states have (on average 1.5672163110311106) internal successors, (921169), 587774 states have internal predecessors, (921169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:25:00,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 587775 states to 587775 states and 921169 transitions. [2023-11-29 00:25:00,609 INFO L78 Accepts]: Start accepts. Automaton has 587775 states and 921169 transitions. Word has length 223 [2023-11-29 00:25:00,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:25:00,609 INFO L495 AbstractCegarLoop]: Abstraction has 587775 states and 921169 transitions. [2023-11-29 00:25:00,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 34.0) internal successors, (204), 6 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:25:00,609 INFO L276 IsEmpty]: Start isEmpty. Operand 587775 states and 921169 transitions. [2023-11-29 00:25:00,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2023-11-29 00:25:00,621 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:25:00,621 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:25:00,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-11-29 00:25:00,621 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:25:00,621 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:25:00,621 INFO L85 PathProgramCache]: Analyzing trace with hash -1653279435, now seen corresponding path program 1 times [2023-11-29 00:25:00,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:25:00,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802818309] [2023-11-29 00:25:00,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:25:00,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:25:00,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:25:00,710 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 70 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-29 00:25:00,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:25:00,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802818309] [2023-11-29 00:25:00,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802818309] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:25:00,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:25:00,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:25:00,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84358947] [2023-11-29 00:25:00,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:25:00,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:25:00,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:25:00,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:25:00,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:25:00,712 INFO L87 Difference]: Start difference. First operand 587775 states and 921169 transitions. Second operand has 3 states, 3 states have (on average 64.66666666666667) internal successors, (194), 3 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:25:05,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:25:05,541 INFO L93 Difference]: Finished difference Result 1737680 states and 2722522 transitions. [2023-11-29 00:25:05,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:25:05,542 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.66666666666667) internal successors, (194), 3 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 224 [2023-11-29 00:25:05,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:25:06,964 INFO L225 Difference]: With dead ends: 1737680 [2023-11-29 00:25:06,964 INFO L226 Difference]: Without dead ends: 1149965 [2023-11-29 00:25:07,662 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 00:25:07,663 INFO L413 NwaCegarLoop]: 768 mSDtfsCounter, 390 mSDsluCounter, 498 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 390 SdHoareTripleChecker+Valid, 1266 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:25:07,663 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [390 Valid, 1266 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:25:08,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1149965 states. [2023-11-29 00:25:19,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1149965 to 1149963. [2023-11-29 00:25:20,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1149963 states, 1149962 states have (on average 1.5586497640791608) internal successors, (1792388), 1149962 states have internal predecessors, (1792388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:25:22,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1149963 states to 1149963 states and 1792388 transitions. [2023-11-29 00:25:22,909 INFO L78 Accepts]: Start accepts. Automaton has 1149963 states and 1792388 transitions. Word has length 224 [2023-11-29 00:25:22,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:25:22,909 INFO L495 AbstractCegarLoop]: Abstraction has 1149963 states and 1792388 transitions. [2023-11-29 00:25:22,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.66666666666667) internal successors, (194), 3 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:25:22,909 INFO L276 IsEmpty]: Start isEmpty. Operand 1149963 states and 1792388 transitions. [2023-11-29 00:25:22,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2023-11-29 00:25:22,934 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:25:22,935 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:25:22,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-11-29 00:25:22,935 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:25:22,935 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:25:22,935 INFO L85 PathProgramCache]: Analyzing trace with hash -1752511179, now seen corresponding path program 1 times [2023-11-29 00:25:22,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:25:22,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910551638] [2023-11-29 00:25:22,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:25:22,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:25:22,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:25:23,022 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2023-11-29 00:25:23,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:25:23,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910551638] [2023-11-29 00:25:23,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910551638] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:25:23,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:25:23,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:25:23,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527209727] [2023-11-29 00:25:23,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:25:23,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:25:23,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:25:23,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:25:23,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:25:23,024 INFO L87 Difference]: Start difference. First operand 1149963 states and 1792388 transitions. Second operand has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)