./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/pals_floodmax.5.1.ufo.BOUNDED-10.pals.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60a85e7f-f281-47f7-88b8-4105ff78e915/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60a85e7f-f281-47f7-88b8-4105ff78e915/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_60a85e7f-f281-47f7-88b8-4105ff78e915/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60a85e7f-f281-47f7-88b8-4105ff78e915/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/pals_floodmax.5.1.ufo.BOUNDED-10.pals.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60a85e7f-f281-47f7-88b8-4105ff78e915/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_60a85e7f-f281-47f7-88b8-4105ff78e915/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 b6fdb2b1846dcedb57e8d072ea261769567fc55001417142c985abb5c6635687 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 01:44:28,550 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 01:44:28,616 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60a85e7f-f281-47f7-88b8-4105ff78e915/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 01:44:28,620 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 01:44:28,621 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 01:44:28,645 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 01:44:28,645 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 01:44:28,646 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 01:44:28,647 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 01:44:28,647 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 01:44:28,648 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 01:44:28,648 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 01:44:28,649 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 01:44:28,649 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 01:44:28,650 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 01:44:28,650 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 01:44:28,651 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 01:44:28,651 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 01:44:28,652 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 01:44:28,652 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 01:44:28,653 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 01:44:28,656 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 01:44:28,657 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 01:44:28,657 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 01:44:28,657 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 01:44:28,658 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 01:44:28,658 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 01:44:28,659 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 01:44:28,659 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 01:44:28,659 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 01:44:28,660 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 01:44:28,660 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 01:44:28,660 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 01:44:28,660 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 01:44:28,661 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 01:44:28,661 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 01:44:28,661 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 01:44:28,661 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 01:44:28,661 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 01:44:28,662 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 01:44:28,662 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 01:44:28,662 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 01:44:28,662 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_60a85e7f-f281-47f7-88b8-4105ff78e915/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60a85e7f-f281-47f7-88b8-4105ff78e915/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b6fdb2b1846dcedb57e8d072ea261769567fc55001417142c985abb5c6635687 [2023-11-29 01:44:28,877 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 01:44:28,898 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 01:44:28,900 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 01:44:28,902 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 01:44:28,902 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 01:44:28,903 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60a85e7f-f281-47f7-88b8-4105ff78e915/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/seq-mthreaded/pals_floodmax.5.1.ufo.BOUNDED-10.pals.c [2023-11-29 01:44:31,713 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 01:44:31,957 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 01:44:31,958 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60a85e7f-f281-47f7-88b8-4105ff78e915/sv-benchmarks/c/seq-mthreaded/pals_floodmax.5.1.ufo.BOUNDED-10.pals.c [2023-11-29 01:44:31,976 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60a85e7f-f281-47f7-88b8-4105ff78e915/bin/uautomizer-verify-BQ2R08f2Ya/data/e59aaf5f0/1cd53f02f41f4118ac50dbb9b1b77f11/FLAG62ba24c3d [2023-11-29 01:44:31,988 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60a85e7f-f281-47f7-88b8-4105ff78e915/bin/uautomizer-verify-BQ2R08f2Ya/data/e59aaf5f0/1cd53f02f41f4118ac50dbb9b1b77f11 [2023-11-29 01:44:31,990 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 01:44:31,992 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 01:44:31,993 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 01:44:31,993 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 01:44:31,997 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 01:44:31,998 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 01:44:31" (1/1) ... [2023-11-29 01:44:31,999 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c53fc28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:44:31, skipping insertion in model container [2023-11-29 01:44:31,999 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 01:44:31" (1/1) ... [2023-11-29 01:44:32,066 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 01:44:32,395 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_60a85e7f-f281-47f7-88b8-4105ff78e915/sv-benchmarks/c/seq-mthreaded/pals_floodmax.5.1.ufo.BOUNDED-10.pals.c[52017,52030] [2023-11-29 01:44:32,399 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 01:44:32,414 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 01:44:32,533 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_60a85e7f-f281-47f7-88b8-4105ff78e915/sv-benchmarks/c/seq-mthreaded/pals_floodmax.5.1.ufo.BOUNDED-10.pals.c[52017,52030] [2023-11-29 01:44:32,533 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 01:44:32,551 INFO L206 MainTranslator]: Completed translation [2023-11-29 01:44:32,552 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:44:32 WrapperNode [2023-11-29 01:44:32,552 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 01:44:32,553 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 01:44:32,553 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 01:44:32,553 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 01:44:32,560 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:44:32" (1/1) ... [2023-11-29 01:44:32,582 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:44:32" (1/1) ... [2023-11-29 01:44:32,640 INFO L138 Inliner]: procedures = 24, calls = 16, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 1985 [2023-11-29 01:44:32,640 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 01:44:32,641 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 01:44:32,641 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 01:44:32,641 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 01:44:32,653 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:44:32" (1/1) ... [2023-11-29 01:44:32,654 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:44:32" (1/1) ... [2023-11-29 01:44:32,660 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:44:32" (1/1) ... [2023-11-29 01:44:32,688 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-11-29 01:44:32,689 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:44:32" (1/1) ... [2023-11-29 01:44:32,689 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:44:32" (1/1) ... [2023-11-29 01:44:32,716 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:44:32" (1/1) ... [2023-11-29 01:44:32,736 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:44:32" (1/1) ... [2023-11-29 01:44:32,745 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:44:32" (1/1) ... [2023-11-29 01:44:32,754 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:44:32" (1/1) ... [2023-11-29 01:44:32,768 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 01:44:32,769 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 01:44:32,769 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 01:44:32,769 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 01:44:32,770 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:44:32" (1/1) ... [2023-11-29 01:44:32,776 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 01:44:32,787 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60a85e7f-f281-47f7-88b8-4105ff78e915/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:44:32,799 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60a85e7f-f281-47f7-88b8-4105ff78e915/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 01:44:32,801 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60a85e7f-f281-47f7-88b8-4105ff78e915/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 01:44:32,828 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 01:44:32,828 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 01:44:32,829 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 01:44:32,829 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 01:44:32,977 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 01:44:32,979 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 01:44:34,432 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 01:44:34,514 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 01:44:34,514 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-29 01:44:34,515 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 01:44:34 BoogieIcfgContainer [2023-11-29 01:44:34,515 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 01:44:34,518 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 01:44:34,518 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 01:44:34,522 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 01:44:34,522 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 01:44:31" (1/3) ... [2023-11-29 01:44:34,523 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@169a2cdd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 01:44:34, skipping insertion in model container [2023-11-29 01:44:34,523 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:44:32" (2/3) ... [2023-11-29 01:44:34,523 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@169a2cdd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 01:44:34, skipping insertion in model container [2023-11-29 01:44:34,523 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 01:44:34" (3/3) ... [2023-11-29 01:44:34,525 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_floodmax.5.1.ufo.BOUNDED-10.pals.c [2023-11-29 01:44:34,545 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 01:44:34,545 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 01:44:34,614 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 01:44:34,621 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;@16226430, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 01:44:34,622 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-29 01:44:34,630 INFO L276 IsEmpty]: Start isEmpty. Operand has 641 states, 639 states have (on average 1.8748043818466353) internal successors, (1198), 640 states have internal predecessors, (1198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:44:34,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-11-29 01:44:34,652 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:44:34,653 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:44:34,653 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:44:34,658 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:44:34,658 INFO L85 PathProgramCache]: Analyzing trace with hash 1260127138, now seen corresponding path program 1 times [2023-11-29 01:44:34,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:44:34,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398879717] [2023-11-29 01:44:34,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:44:34,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:44:34,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:44:35,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:44:35,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:44:35,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398879717] [2023-11-29 01:44:35,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398879717] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:44:35,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:44:35,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 01:44:35,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578332224] [2023-11-29 01:44:35,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:44:35,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-29 01:44:35,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:44:35,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-29 01:44:35,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 01:44:35,130 INFO L87 Difference]: Start difference. First operand has 641 states, 639 states have (on average 1.8748043818466353) internal successors, (1198), 640 states have internal predecessors, (1198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 75.0) internal successors, (150), 2 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:44:35,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:44:35,199 INFO L93 Difference]: Finished difference Result 759 states and 1412 transitions. [2023-11-29 01:44:35,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 01:44:35,202 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 75.0) internal successors, (150), 2 states have internal predecessors, (150), 0 states have call successors, (0), 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 150 [2023-11-29 01:44:35,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:44:35,218 INFO L225 Difference]: With dead ends: 759 [2023-11-29 01:44:35,219 INFO L226 Difference]: Without dead ends: 639 [2023-11-29 01:44:35,222 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 01:44:35,226 INFO L413 NwaCegarLoop]: 1191 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1191 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:44:35,227 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1191 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:44:35,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 639 states. [2023-11-29 01:44:35,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 639 to 639. [2023-11-29 01:44:35,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 639 states, 638 states have (on average 1.8699059561128526) internal successors, (1193), 638 states have internal predecessors, (1193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:44:35,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 639 states to 639 states and 1193 transitions. [2023-11-29 01:44:35,299 INFO L78 Accepts]: Start accepts. Automaton has 639 states and 1193 transitions. Word has length 150 [2023-11-29 01:44:35,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:44:35,300 INFO L495 AbstractCegarLoop]: Abstraction has 639 states and 1193 transitions. [2023-11-29 01:44:35,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 75.0) internal successors, (150), 2 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:44:35,300 INFO L276 IsEmpty]: Start isEmpty. Operand 639 states and 1193 transitions. [2023-11-29 01:44:35,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-11-29 01:44:35,319 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:44:35,319 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:44:35,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 01:44:35,320 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:44:35,321 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:44:35,321 INFO L85 PathProgramCache]: Analyzing trace with hash -1111612124, now seen corresponding path program 1 times [2023-11-29 01:44:35,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:44:35,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468424367] [2023-11-29 01:44:35,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:44:35,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:44:35,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:44:35,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:44:35,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:44:35,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468424367] [2023-11-29 01:44:35,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1468424367] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:44:35,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:44:35,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 01:44:35,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569936873] [2023-11-29 01:44:35,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:44:35,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:44:35,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:44:35,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:44:35,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:44:35,702 INFO L87 Difference]: Start difference. First operand 639 states and 1193 transitions. Second operand has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:44:35,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:44:35,797 INFO L93 Difference]: Finished difference Result 757 states and 1405 transitions. [2023-11-29 01:44:35,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:44:35,798 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 0 states have call successors, (0), 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 150 [2023-11-29 01:44:35,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:44:35,803 INFO L225 Difference]: With dead ends: 757 [2023-11-29 01:44:35,803 INFO L226 Difference]: Without dead ends: 639 [2023-11-29 01:44:35,805 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:44:35,806 INFO L413 NwaCegarLoop]: 1190 mSDtfsCounter, 0 mSDsluCounter, 2337 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3527 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:44:35,807 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3527 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 01:44:35,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 639 states. [2023-11-29 01:44:35,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 639 to 639. [2023-11-29 01:44:35,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 639 states, 638 states have (on average 1.8072100313479624) internal successors, (1153), 638 states have internal predecessors, (1153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:44:35,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 639 states to 639 states and 1153 transitions. [2023-11-29 01:44:35,826 INFO L78 Accepts]: Start accepts. Automaton has 639 states and 1153 transitions. Word has length 150 [2023-11-29 01:44:35,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:44:35,827 INFO L495 AbstractCegarLoop]: Abstraction has 639 states and 1153 transitions. [2023-11-29 01:44:35,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:44:35,827 INFO L276 IsEmpty]: Start isEmpty. Operand 639 states and 1153 transitions. [2023-11-29 01:44:35,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2023-11-29 01:44:35,830 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:44:35,831 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:44:35,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 01:44:35,831 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:44:35,832 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:44:35,832 INFO L85 PathProgramCache]: Analyzing trace with hash 1624323313, now seen corresponding path program 1 times [2023-11-29 01:44:35,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:44:35,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094026231] [2023-11-29 01:44:35,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:44:35,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:44:35,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:44:36,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:44:36,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:44:36,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094026231] [2023-11-29 01:44:36,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094026231] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:44:36,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:44:36,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:44:36,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817330317] [2023-11-29 01:44:36,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:44:36,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:44:36,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:44:36,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:44:36,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:44:36,094 INFO L87 Difference]: Start difference. First operand 639 states and 1153 transitions. Second operand has 3 states, 3 states have (on average 63.0) internal successors, (189), 3 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:44:36,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:44:36,151 INFO L93 Difference]: Finished difference Result 856 states and 1546 transitions. [2023-11-29 01:44:36,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:44:36,151 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 63.0) internal successors, (189), 3 states have internal predecessors, (189), 0 states have call successors, (0), 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 189 [2023-11-29 01:44:36,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:44:36,156 INFO L225 Difference]: With dead ends: 856 [2023-11-29 01:44:36,157 INFO L226 Difference]: Without dead ends: 741 [2023-11-29 01:44:36,158 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:44:36,159 INFO L413 NwaCegarLoop]: 1309 mSDtfsCounter, 176 mSDsluCounter, 1110 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 2419 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 01:44:36,160 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [176 Valid, 2419 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:44:36,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 741 states. [2023-11-29 01:44:36,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 741 to 739. [2023-11-29 01:44:36,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 739 states, 738 states have (on average 1.8035230352303524) internal successors, (1331), 738 states have internal predecessors, (1331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:44:36,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 739 states to 739 states and 1331 transitions. [2023-11-29 01:44:36,180 INFO L78 Accepts]: Start accepts. Automaton has 739 states and 1331 transitions. Word has length 189 [2023-11-29 01:44:36,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:44:36,181 INFO L495 AbstractCegarLoop]: Abstraction has 739 states and 1331 transitions. [2023-11-29 01:44:36,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.0) internal successors, (189), 3 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:44:36,181 INFO L276 IsEmpty]: Start isEmpty. Operand 739 states and 1331 transitions. [2023-11-29 01:44:36,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2023-11-29 01:44:36,185 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:44:36,185 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:44:36,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 01:44:36,185 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:44:36,186 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:44:36,186 INFO L85 PathProgramCache]: Analyzing trace with hash 673428184, now seen corresponding path program 1 times [2023-11-29 01:44:36,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:44:36,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88695519] [2023-11-29 01:44:36,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:44:36,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:44:36,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:44:36,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:44:36,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:44:36,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88695519] [2023-11-29 01:44:36,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88695519] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:44:36,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:44:36,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:44:36,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706017118] [2023-11-29 01:44:36,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:44:36,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:44:36,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:44:36,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:44:36,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:44:36,371 INFO L87 Difference]: Start difference. First operand 739 states and 1331 transitions. Second operand has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 3 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:44:36,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:44:36,417 INFO L93 Difference]: Finished difference Result 954 states and 1720 transitions. [2023-11-29 01:44:36,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:44:36,418 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 3 states have internal predecessors, (193), 0 states have call successors, (0), 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 193 [2023-11-29 01:44:36,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:44:36,424 INFO L225 Difference]: With dead ends: 954 [2023-11-29 01:44:36,424 INFO L226 Difference]: Without dead ends: 839 [2023-11-29 01:44:36,425 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:44:36,426 INFO L413 NwaCegarLoop]: 1314 mSDtfsCounter, 185 mSDsluCounter, 1129 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 2443 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:44:36,427 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [185 Valid, 2443 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:44:36,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 839 states. [2023-11-29 01:44:36,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 839 to 837. [2023-11-29 01:44:36,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 837 states, 836 states have (on average 1.8038277511961722) internal successors, (1508), 836 states have internal predecessors, (1508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:44:36,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 837 states to 837 states and 1508 transitions. [2023-11-29 01:44:36,451 INFO L78 Accepts]: Start accepts. Automaton has 837 states and 1508 transitions. Word has length 193 [2023-11-29 01:44:36,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:44:36,452 INFO L495 AbstractCegarLoop]: Abstraction has 837 states and 1508 transitions. [2023-11-29 01:44:36,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 3 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:44:36,452 INFO L276 IsEmpty]: Start isEmpty. Operand 837 states and 1508 transitions. [2023-11-29 01:44:36,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2023-11-29 01:44:36,455 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:44:36,474 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:44:36,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 01:44:36,475 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:44:36,476 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:44:36,476 INFO L85 PathProgramCache]: Analyzing trace with hash -1518936157, now seen corresponding path program 1 times [2023-11-29 01:44:36,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:44:36,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404249100] [2023-11-29 01:44:36,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:44:36,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:44:36,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:44:36,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:44:36,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:44:36,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404249100] [2023-11-29 01:44:36,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404249100] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:44:36,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:44:36,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:44:36,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233049502] [2023-11-29 01:44:36,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:44:36,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:44:36,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:44:36,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:44:36,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:44:36,682 INFO L87 Difference]: Start difference. First operand 837 states and 1508 transitions. Second operand has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 3 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:44:36,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:44:36,729 INFO L93 Difference]: Finished difference Result 1426 states and 2569 transitions. [2023-11-29 01:44:36,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:44:36,730 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 3 states have internal predecessors, (193), 0 states have call successors, (0), 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 193 [2023-11-29 01:44:36,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:44:36,737 INFO L225 Difference]: With dead ends: 1426 [2023-11-29 01:44:36,737 INFO L226 Difference]: Without dead ends: 1115 [2023-11-29 01:44:36,738 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:44:36,739 INFO L413 NwaCegarLoop]: 1157 mSDtfsCounter, 176 mSDsluCounter, 1119 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 2276 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:44:36,740 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [176 Valid, 2276 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:44:36,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1115 states. [2023-11-29 01:44:36,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1115 to 1113. [2023-11-29 01:44:36,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1113 states, 1112 states have (on average 1.8012589928057554) internal successors, (2003), 1112 states have internal predecessors, (2003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:44:36,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1113 states to 1113 states and 2003 transitions. [2023-11-29 01:44:36,774 INFO L78 Accepts]: Start accepts. Automaton has 1113 states and 2003 transitions. Word has length 193 [2023-11-29 01:44:36,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:44:36,775 INFO L495 AbstractCegarLoop]: Abstraction has 1113 states and 2003 transitions. [2023-11-29 01:44:36,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 3 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:44:36,775 INFO L276 IsEmpty]: Start isEmpty. Operand 1113 states and 2003 transitions. [2023-11-29 01:44:36,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2023-11-29 01:44:36,779 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:44:36,779 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:44:36,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 01:44:36,779 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:44:36,780 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:44:36,780 INFO L85 PathProgramCache]: Analyzing trace with hash 225766999, now seen corresponding path program 1 times [2023-11-29 01:44:36,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:44:36,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410867052] [2023-11-29 01:44:36,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:44:36,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:44:36,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:44:37,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:44:37,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:44:37,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410867052] [2023-11-29 01:44:37,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410867052] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:44:37,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:44:37,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:44:37,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482577931] [2023-11-29 01:44:37,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:44:37,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:44:37,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:44:37,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:44:37,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:44:37,028 INFO L87 Difference]: Start difference. First operand 1113 states and 2003 transitions. Second operand has 3 states, 3 states have (on average 65.66666666666667) internal successors, (197), 3 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:44:37,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:44:37,092 INFO L93 Difference]: Finished difference Result 2221 states and 3991 transitions. [2023-11-29 01:44:37,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:44:37,093 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 65.66666666666667) internal successors, (197), 3 states have internal predecessors, (197), 0 states have call successors, (0), 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 197 [2023-11-29 01:44:37,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:44:37,104 INFO L225 Difference]: With dead ends: 2221 [2023-11-29 01:44:37,104 INFO L226 Difference]: Without dead ends: 1634 [2023-11-29 01:44:37,106 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:44:37,107 INFO L413 NwaCegarLoop]: 1157 mSDtfsCounter, 168 mSDsluCounter, 1120 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 2277 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:44:37,108 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 2277 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:44:37,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1634 states. [2023-11-29 01:44:37,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1634 to 1632. [2023-11-29 01:44:37,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1632 states, 1631 states have (on average 1.7946045370938075) internal successors, (2927), 1631 states have internal predecessors, (2927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:44:37,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1632 states to 1632 states and 2927 transitions. [2023-11-29 01:44:37,169 INFO L78 Accepts]: Start accepts. Automaton has 1632 states and 2927 transitions. Word has length 197 [2023-11-29 01:44:37,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:44:37,170 INFO L495 AbstractCegarLoop]: Abstraction has 1632 states and 2927 transitions. [2023-11-29 01:44:37,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.66666666666667) internal successors, (197), 3 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:44:37,171 INFO L276 IsEmpty]: Start isEmpty. Operand 1632 states and 2927 transitions. [2023-11-29 01:44:37,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2023-11-29 01:44:37,176 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:44:37,176 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:44:37,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 01:44:37,176 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:44:37,177 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:44:37,177 INFO L85 PathProgramCache]: Analyzing trace with hash 1615433355, now seen corresponding path program 1 times [2023-11-29 01:44:37,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:44:37,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235653849] [2023-11-29 01:44:37,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:44:37,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:44:37,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:44:37,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:44:37,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:44:37,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235653849] [2023-11-29 01:44:37,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235653849] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:44:37,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:44:37,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:44:37,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308059959] [2023-11-29 01:44:37,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:44:37,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:44:37,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:44:37,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:44:37,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:44:37,413 INFO L87 Difference]: Start difference. First operand 1632 states and 2927 transitions. Second operand has 3 states, 3 states have (on average 67.0) internal successors, (201), 3 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:44:37,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:44:37,476 INFO L93 Difference]: Finished difference Result 3712 states and 6637 transitions. [2023-11-29 01:44:37,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:44:37,477 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 67.0) internal successors, (201), 3 states have internal predecessors, (201), 0 states have call successors, (0), 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 201 [2023-11-29 01:44:37,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:44:37,491 INFO L225 Difference]: With dead ends: 3712 [2023-11-29 01:44:37,492 INFO L226 Difference]: Without dead ends: 2606 [2023-11-29 01:44:37,494 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:44:37,494 INFO L413 NwaCegarLoop]: 1157 mSDtfsCounter, 160 mSDsluCounter, 1121 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 2278 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:44:37,495 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 2278 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:44:37,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2606 states. [2023-11-29 01:44:37,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2606 to 2604. [2023-11-29 01:44:37,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2604 states, 2603 states have (on average 1.7837111025739532) internal successors, (4643), 2603 states have internal predecessors, (4643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:44:37,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2604 states to 2604 states and 4643 transitions. [2023-11-29 01:44:37,569 INFO L78 Accepts]: Start accepts. Automaton has 2604 states and 4643 transitions. Word has length 201 [2023-11-29 01:44:37,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:44:37,570 INFO L495 AbstractCegarLoop]: Abstraction has 2604 states and 4643 transitions. [2023-11-29 01:44:37,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 67.0) internal successors, (201), 3 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:44:37,570 INFO L276 IsEmpty]: Start isEmpty. Operand 2604 states and 4643 transitions. [2023-11-29 01:44:37,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2023-11-29 01:44:37,574 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:44:37,574 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:44:37,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-29 01:44:37,575 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:44:37,575 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:44:37,575 INFO L85 PathProgramCache]: Analyzing trace with hash -1066057155, now seen corresponding path program 1 times [2023-11-29 01:44:37,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:44:37,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392497071] [2023-11-29 01:44:37,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:44:37,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:44:37,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:44:37,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:44:37,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:44:37,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392497071] [2023-11-29 01:44:37,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392497071] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:44:37,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:44:37,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:44:37,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620712969] [2023-11-29 01:44:37,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:44:37,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:44:37,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:44:37,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:44:37,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:44:37,809 INFO L87 Difference]: Start difference. First operand 2604 states and 4643 transitions. Second operand has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 3 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:44:37,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:44:37,893 INFO L93 Difference]: Finished difference Result 6496 states and 11533 transitions. [2023-11-29 01:44:37,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:44:37,894 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 3 states have internal predecessors, (205), 0 states have call successors, (0), 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 205 [2023-11-29 01:44:37,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:44:37,919 INFO L225 Difference]: With dead ends: 6496 [2023-11-29 01:44:37,919 INFO L226 Difference]: Without dead ends: 4418 [2023-11-29 01:44:37,922 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:44:37,923 INFO L413 NwaCegarLoop]: 1207 mSDtfsCounter, 152 mSDsluCounter, 1122 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 2329 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:44:37,923 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 2329 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:44:37,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4418 states. [2023-11-29 01:44:38,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4418 to 4416. [2023-11-29 01:44:38,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4416 states, 4415 states have (on average 1.7691959229898075) internal successors, (7811), 4415 states have internal predecessors, (7811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:44:38,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4416 states to 4416 states and 7811 transitions. [2023-11-29 01:44:38,056 INFO L78 Accepts]: Start accepts. Automaton has 4416 states and 7811 transitions. Word has length 205 [2023-11-29 01:44:38,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:44:38,057 INFO L495 AbstractCegarLoop]: Abstraction has 4416 states and 7811 transitions. [2023-11-29 01:44:38,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 3 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:44:38,057 INFO L276 IsEmpty]: Start isEmpty. Operand 4416 states and 7811 transitions. [2023-11-29 01:44:38,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2023-11-29 01:44:38,061 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:44:38,061 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:44:38,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-29 01:44:38,062 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:44:38,062 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:44:38,062 INFO L85 PathProgramCache]: Analyzing trace with hash 1402588196, now seen corresponding path program 1 times [2023-11-29 01:44:38,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:44:38,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188129304] [2023-11-29 01:44:38,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:44:38,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:44:38,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:44:38,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:44:38,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:44:38,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188129304] [2023-11-29 01:44:38,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188129304] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:44:38,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:44:38,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:44:38,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334993493] [2023-11-29 01:44:38,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:44:38,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:44:38,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:44:38,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:44:38,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:44:38,279 INFO L87 Difference]: Start difference. First operand 4416 states and 7811 transitions. Second operand has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:44:38,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:44:38,373 INFO L93 Difference]: Finished difference Result 8319 states and 14709 transitions. [2023-11-29 01:44:38,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:44:38,374 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 0 states have call successors, (0), 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 209 [2023-11-29 01:44:38,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:44:38,409 INFO L225 Difference]: With dead ends: 8319 [2023-11-29 01:44:38,409 INFO L226 Difference]: Without dead ends: 6241 [2023-11-29 01:44:38,413 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:44:38,414 INFO L413 NwaCegarLoop]: 1199 mSDtfsCounter, 153 mSDsluCounter, 1133 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 2332 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:44:38,414 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 2332 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:44:38,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6241 states. [2023-11-29 01:44:38,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6241 to 6239. [2023-11-29 01:44:38,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6239 states, 6238 states have (on average 1.760019236934915) internal successors, (10979), 6238 states have internal predecessors, (10979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:44:38,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6239 states to 6239 states and 10979 transitions. [2023-11-29 01:44:38,587 INFO L78 Accepts]: Start accepts. Automaton has 6239 states and 10979 transitions. Word has length 209 [2023-11-29 01:44:38,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:44:38,588 INFO L495 AbstractCegarLoop]: Abstraction has 6239 states and 10979 transitions. [2023-11-29 01:44:38,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:44:38,588 INFO L276 IsEmpty]: Start isEmpty. Operand 6239 states and 10979 transitions. [2023-11-29 01:44:38,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2023-11-29 01:44:38,592 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:44:38,593 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:44:38,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-29 01:44:38,593 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:44:38,593 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:44:38,593 INFO L85 PathProgramCache]: Analyzing trace with hash 314437359, now seen corresponding path program 1 times [2023-11-29 01:44:38,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:44:38,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100970894] [2023-11-29 01:44:38,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:44:38,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:44:38,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:44:38,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:44:38,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:44:38,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100970894] [2023-11-29 01:44:38,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100970894] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:44:38,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:44:38,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 01:44:38,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806621696] [2023-11-29 01:44:38,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:44:38,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 01:44:38,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:44:38,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 01:44:38,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 01:44:38,978 INFO L87 Difference]: Start difference. First operand 6239 states and 10979 transitions. Second operand has 7 states, 7 states have (on average 29.857142857142858) internal successors, (209), 7 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:44:39,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:44:39,759 INFO L93 Difference]: Finished difference Result 40885 states and 72434 transitions. [2023-11-29 01:44:39,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 01:44:39,759 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 29.857142857142858) internal successors, (209), 7 states have internal predecessors, (209), 0 states have call successors, (0), 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 209 [2023-11-29 01:44:39,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:44:39,867 INFO L225 Difference]: With dead ends: 40885 [2023-11-29 01:44:39,867 INFO L226 Difference]: Without dead ends: 35327 [2023-11-29 01:44:39,882 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2023-11-29 01:44:39,883 INFO L413 NwaCegarLoop]: 1171 mSDtfsCounter, 2702 mSDsluCounter, 7020 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2702 SdHoareTripleChecker+Valid, 8191 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 01:44:39,883 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2702 Valid, 8191 Invalid, 235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 228 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 01:44:39,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35327 states. [2023-11-29 01:44:40,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35327 to 11740. [2023-11-29 01:44:40,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11740 states, 11739 states have (on average 1.7527046596814038) internal successors, (20575), 11739 states have internal predecessors, (20575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:44:40,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11740 states to 11740 states and 20575 transitions. [2023-11-29 01:44:40,402 INFO L78 Accepts]: Start accepts. Automaton has 11740 states and 20575 transitions. Word has length 209 [2023-11-29 01:44:40,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:44:40,402 INFO L495 AbstractCegarLoop]: Abstraction has 11740 states and 20575 transitions. [2023-11-29 01:44:40,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 29.857142857142858) internal successors, (209), 7 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:44:40,403 INFO L276 IsEmpty]: Start isEmpty. Operand 11740 states and 20575 transitions. [2023-11-29 01:44:40,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2023-11-29 01:44:40,408 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:44:40,408 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:44:40,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-29 01:44:40,409 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:44:40,409 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:44:40,409 INFO L85 PathProgramCache]: Analyzing trace with hash 1083880668, now seen corresponding path program 1 times [2023-11-29 01:44:40,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:44:40,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584264522] [2023-11-29 01:44:40,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:44:40,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:44:40,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:44:40,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:44:40,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:44:40,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584264522] [2023-11-29 01:44:40,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584264522] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:44:40,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:44:40,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 01:44:40,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764156867] [2023-11-29 01:44:40,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:44:40,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:44:40,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:44:40,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:44:40,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:44:40,634 INFO L87 Difference]: Start difference. First operand 11740 states and 20575 transitions. Second operand has 4 states, 4 states have (on average 52.5) internal successors, (210), 4 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:44:41,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:44:41,039 INFO L93 Difference]: Finished difference Result 37572 states and 66095 transitions. [2023-11-29 01:44:41,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:44:41,040 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 52.5) internal successors, (210), 4 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 210 [2023-11-29 01:44:41,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:44:41,099 INFO L225 Difference]: With dead ends: 37572 [2023-11-29 01:44:41,099 INFO L226 Difference]: Without dead ends: 26606 [2023-11-29 01:44:41,114 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 01:44:41,115 INFO L413 NwaCegarLoop]: 1139 mSDtfsCounter, 592 mSDsluCounter, 2441 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 592 SdHoareTripleChecker+Valid, 3580 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:44:41,115 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [592 Valid, 3580 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 01:44:41,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26606 states. [2023-11-29 01:44:41,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26606 to 19124. [2023-11-29 01:44:41,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19124 states, 19123 states have (on average 1.751451132144538) internal successors, (33493), 19123 states have internal predecessors, (33493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:44:41,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19124 states to 19124 states and 33493 transitions. [2023-11-29 01:44:41,714 INFO L78 Accepts]: Start accepts. Automaton has 19124 states and 33493 transitions. Word has length 210 [2023-11-29 01:44:41,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:44:41,715 INFO L495 AbstractCegarLoop]: Abstraction has 19124 states and 33493 transitions. [2023-11-29 01:44:41,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 52.5) internal successors, (210), 4 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:44:41,715 INFO L276 IsEmpty]: Start isEmpty. Operand 19124 states and 33493 transitions. [2023-11-29 01:44:41,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2023-11-29 01:44:41,720 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:44:41,720 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:44:41,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-29 01:44:41,721 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:44:41,721 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:44:41,721 INFO L85 PathProgramCache]: Analyzing trace with hash 226794630, now seen corresponding path program 1 times [2023-11-29 01:44:41,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:44:41,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035541227] [2023-11-29 01:44:41,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:44:41,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:44:41,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:44:41,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:44:41,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:44:41,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035541227] [2023-11-29 01:44:41,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035541227] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:44:41,899 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:44:41,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:44:41,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517208619] [2023-11-29 01:44:41,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:44:41,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:44:41,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:44:41,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:44:41,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:44:41,901 INFO L87 Difference]: Start difference. First operand 19124 states and 33493 transitions. Second operand has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:44:42,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:44:42,238 INFO L93 Difference]: Finished difference Result 36928 states and 64711 transitions. [2023-11-29 01:44:42,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:44:42,239 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 210 [2023-11-29 01:44:42,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:44:42,298 INFO L225 Difference]: With dead ends: 36928 [2023-11-29 01:44:42,298 INFO L226 Difference]: Without dead ends: 26912 [2023-11-29 01:44:42,309 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:44:42,310 INFO L413 NwaCegarLoop]: 1242 mSDtfsCounter, 161 mSDsluCounter, 1132 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 2374 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:44:42,310 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [161 Valid, 2374 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:44:42,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26912 states. [2023-11-29 01:44:42,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26912 to 26910. [2023-11-29 01:44:42,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26910 states, 26909 states have (on average 1.7425396707421308) internal successors, (46890), 26909 states have internal predecessors, (46890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:44:42,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26910 states to 26910 states and 46890 transitions. [2023-11-29 01:44:42,851 INFO L78 Accepts]: Start accepts. Automaton has 26910 states and 46890 transitions. Word has length 210 [2023-11-29 01:44:42,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:44:42,852 INFO L495 AbstractCegarLoop]: Abstraction has 26910 states and 46890 transitions. [2023-11-29 01:44:42,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:44:42,852 INFO L276 IsEmpty]: Start isEmpty. Operand 26910 states and 46890 transitions. [2023-11-29 01:44:42,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2023-11-29 01:44:42,855 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:44:42,856 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:44:42,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-29 01:44:42,856 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:44:42,856 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:44:42,856 INFO L85 PathProgramCache]: Analyzing trace with hash -1730657656, now seen corresponding path program 1 times [2023-11-29 01:44:42,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:44:42,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391656999] [2023-11-29 01:44:42,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:44:42,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:44:42,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:44:42,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:44:42,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:44:42,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391656999] [2023-11-29 01:44:42,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391656999] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:44:42,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:44:42,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:44:42,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827778693] [2023-11-29 01:44:42,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:44:42,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:44:42,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:44:42,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:44:42,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:44:42,955 INFO L87 Difference]: Start difference. First operand 26910 states and 46890 transitions. Second operand has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:44:43,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:44:43,391 INFO L93 Difference]: Finished difference Result 52234 states and 91076 transitions. [2023-11-29 01:44:43,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:44:43,392 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 210 [2023-11-29 01:44:43,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:44:43,449 INFO L225 Difference]: With dead ends: 52234 [2023-11-29 01:44:43,449 INFO L226 Difference]: Without dead ends: 37968 [2023-11-29 01:44:43,467 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:44:43,467 INFO L413 NwaCegarLoop]: 1276 mSDtfsCounter, 169 mSDsluCounter, 1131 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 2407 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:44:43,468 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 2407 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 01:44:43,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37968 states. [2023-11-29 01:44:44,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37968 to 37966. [2023-11-29 01:44:44,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37966 states, 37965 states have (on average 1.7331489529830106) internal successors, (65799), 37965 states have internal predecessors, (65799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:44:44,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37966 states to 37966 states and 65799 transitions. [2023-11-29 01:44:44,343 INFO L78 Accepts]: Start accepts. Automaton has 37966 states and 65799 transitions. Word has length 210 [2023-11-29 01:44:44,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:44:44,343 INFO L495 AbstractCegarLoop]: Abstraction has 37966 states and 65799 transitions. [2023-11-29 01:44:44,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:44:44,343 INFO L276 IsEmpty]: Start isEmpty. Operand 37966 states and 65799 transitions. [2023-11-29 01:44:44,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2023-11-29 01:44:44,345 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:44:44,346 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:44:44,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-29 01:44:44,346 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:44:44,346 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:44:44,346 INFO L85 PathProgramCache]: Analyzing trace with hash -734859124, now seen corresponding path program 1 times [2023-11-29 01:44:44,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:44:44,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973414396] [2023-11-29 01:44:44,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:44:44,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:44:44,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:44:44,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:44:44,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:44:44,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973414396] [2023-11-29 01:44:44,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973414396] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:44:44,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:44:44,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:44:44,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973137348] [2023-11-29 01:44:44,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:44:44,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:44:44,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:44:44,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:44:44,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:44:44,444 INFO L87 Difference]: Start difference. First operand 37966 states and 65799 transitions. Second operand has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:44:45,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:44:45,010 INFO L93 Difference]: Finished difference Result 73880 states and 128117 transitions. [2023-11-29 01:44:45,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:44:45,011 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 210 [2023-11-29 01:44:45,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:44:45,080 INFO L225 Difference]: With dead ends: 73880 [2023-11-29 01:44:45,080 INFO L226 Difference]: Without dead ends: 53580 [2023-11-29 01:44:45,099 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:44:45,100 INFO L413 NwaCegarLoop]: 1310 mSDtfsCounter, 177 mSDsluCounter, 1130 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 2440 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:44:45,100 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [177 Valid, 2440 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:44:45,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53580 states. [2023-11-29 01:44:45,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53580 to 53578. [2023-11-29 01:44:45,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53578 states, 53577 states have (on average 1.722604849095694) internal successors, (92292), 53577 states have internal predecessors, (92292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:44:45,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53578 states to 53578 states and 92292 transitions. [2023-11-29 01:44:45,961 INFO L78 Accepts]: Start accepts. Automaton has 53578 states and 92292 transitions. Word has length 210 [2023-11-29 01:44:45,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:44:45,962 INFO L495 AbstractCegarLoop]: Abstraction has 53578 states and 92292 transitions. [2023-11-29 01:44:45,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:44:45,962 INFO L276 IsEmpty]: Start isEmpty. Operand 53578 states and 92292 transitions. [2023-11-29 01:44:45,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2023-11-29 01:44:45,964 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:44:45,964 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:44:45,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-29 01:44:45,965 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:44:45,965 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:44:45,965 INFO L85 PathProgramCache]: Analyzing trace with hash -827728776, now seen corresponding path program 1 times [2023-11-29 01:44:45,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:44:45,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016035888] [2023-11-29 01:44:45,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:44:45,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:44:46,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:44:46,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:44:46,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:44:46,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016035888] [2023-11-29 01:44:46,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016035888] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:44:46,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:44:46,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 01:44:46,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483891078] [2023-11-29 01:44:46,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:44:46,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:44:46,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:44:46,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:44:46,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:44:46,161 INFO L87 Difference]: Start difference. First operand 53578 states and 92292 transitions. Second operand has 4 states, 4 states have (on average 52.75) internal successors, (211), 4 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:44:47,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:44:47,575 INFO L93 Difference]: Finished difference Result 177704 states and 306470 transitions. [2023-11-29 01:44:47,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:44:47,576 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 52.75) internal successors, (211), 4 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 211 [2023-11-29 01:44:47,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:44:47,731 INFO L225 Difference]: With dead ends: 177704 [2023-11-29 01:44:47,731 INFO L226 Difference]: Without dead ends: 124684 [2023-11-29 01:44:47,764 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 01:44:47,765 INFO L413 NwaCegarLoop]: 1139 mSDtfsCounter, 590 mSDsluCounter, 2443 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 590 SdHoareTripleChecker+Valid, 3582 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:44:47,765 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [590 Valid, 3582 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 01:44:47,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124684 states. [2023-11-29 01:44:49,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124684 to 88862. [2023-11-29 01:44:49,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88862 states, 88861 states have (on average 1.7149930790785608) internal successors, (152396), 88861 states have internal predecessors, (152396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:44:49,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88862 states to 88862 states and 152396 transitions. [2023-11-29 01:44:49,522 INFO L78 Accepts]: Start accepts. Automaton has 88862 states and 152396 transitions. Word has length 211 [2023-11-29 01:44:49,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:44:49,522 INFO L495 AbstractCegarLoop]: Abstraction has 88862 states and 152396 transitions. [2023-11-29 01:44:49,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 52.75) internal successors, (211), 4 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:44:49,523 INFO L276 IsEmpty]: Start isEmpty. Operand 88862 states and 152396 transitions. [2023-11-29 01:44:49,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2023-11-29 01:44:49,525 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:44:49,525 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:44:49,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-29 01:44:49,525 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:44:49,526 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:44:49,526 INFO L85 PathProgramCache]: Analyzing trace with hash 47372357, now seen corresponding path program 1 times [2023-11-29 01:44:49,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:44:49,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39700684] [2023-11-29 01:44:49,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:44:49,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:44:49,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:44:49,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:44:49,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:44:49,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39700684] [2023-11-29 01:44:49,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39700684] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:44:49,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:44:49,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 01:44:49,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940295466] [2023-11-29 01:44:49,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:44:49,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:44:49,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:44:49,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:44:49,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:44:49,726 INFO L87 Difference]: Start difference. First operand 88862 states and 152396 transitions. Second operand has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:44:52,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:44:52,051 INFO L93 Difference]: Finished difference Result 294908 states and 506426 transitions. [2023-11-29 01:44:52,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:44:52,052 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 0 states have call successors, (0), 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 212 [2023-11-29 01:44:52,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:44:52,325 INFO L225 Difference]: With dead ends: 294908 [2023-11-29 01:44:52,325 INFO L226 Difference]: Without dead ends: 206604 [2023-11-29 01:44:52,372 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 01:44:52,372 INFO L413 NwaCegarLoop]: 1138 mSDtfsCounter, 588 mSDsluCounter, 2359 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 588 SdHoareTripleChecker+Valid, 3497 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:44:52,373 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [588 Valid, 3497 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:44:52,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206604 states. [2023-11-29 01:44:55,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206604 to 147290. [2023-11-29 01:44:55,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147290 states, 147289 states have (on average 1.707554535640815) internal successors, (251504), 147289 states have internal predecessors, (251504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:44:55,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147290 states to 147290 states and 251504 transitions. [2023-11-29 01:44:55,592 INFO L78 Accepts]: Start accepts. Automaton has 147290 states and 251504 transitions. Word has length 212 [2023-11-29 01:44:55,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:44:55,593 INFO L495 AbstractCegarLoop]: Abstraction has 147290 states and 251504 transitions. [2023-11-29 01:44:55,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:44:55,593 INFO L276 IsEmpty]: Start isEmpty. Operand 147290 states and 251504 transitions. [2023-11-29 01:44:55,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2023-11-29 01:44:55,594 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:44:55,594 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:44:55,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-29 01:44:55,595 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:44:55,595 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:44:55,595 INFO L85 PathProgramCache]: Analyzing trace with hash 1411155457, now seen corresponding path program 1 times [2023-11-29 01:44:55,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:44:55,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173963387] [2023-11-29 01:44:55,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:44:55,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:44:55,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:44:55,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:44:55,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:44:55,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173963387] [2023-11-29 01:44:55,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173963387] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:44:55,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:44:55,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 01:44:55,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385191234] [2023-11-29 01:44:55,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:44:55,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:44:55,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:44:55,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:44:55,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:44:55,734 INFO L87 Difference]: Start difference. First operand 147290 states and 251504 transitions. Second operand has 4 states, 4 states have (on average 53.25) internal successors, (213), 4 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:44:59,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:44:59,292 INFO L93 Difference]: Finished difference Result 487576 states and 833758 transitions. [2023-11-29 01:44:59,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:44:59,293 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 53.25) internal successors, (213), 4 states have internal predecessors, (213), 0 states have call successors, (0), 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 213 [2023-11-29 01:44:59,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:44:59,728 INFO L225 Difference]: With dead ends: 487576 [2023-11-29 01:44:59,728 INFO L226 Difference]: Without dead ends: 340844 [2023-11-29 01:44:59,802 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 01:44:59,803 INFO L413 NwaCegarLoop]: 1139 mSDtfsCounter, 586 mSDsluCounter, 2447 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 586 SdHoareTripleChecker+Valid, 3586 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:44:59,803 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [586 Valid, 3586 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 01:45:00,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340844 states. [2023-11-29 01:45:04,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340844 to 243342. [2023-11-29 01:45:04,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243342 states, 243341 states have (on average 1.7003299896030672) internal successors, (413760), 243341 states have internal predecessors, (413760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:45:05,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243342 states to 243342 states and 413760 transitions. [2023-11-29 01:45:05,584 INFO L78 Accepts]: Start accepts. Automaton has 243342 states and 413760 transitions. Word has length 213 [2023-11-29 01:45:05,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:45:05,585 INFO L495 AbstractCegarLoop]: Abstraction has 243342 states and 413760 transitions. [2023-11-29 01:45:05,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 53.25) internal successors, (213), 4 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:45:05,585 INFO L276 IsEmpty]: Start isEmpty. Operand 243342 states and 413760 transitions. [2023-11-29 01:45:05,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2023-11-29 01:45:05,587 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:45:05,587 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:45:05,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-29 01:45:05,587 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:45:05,588 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:45:05,588 INFO L85 PathProgramCache]: Analyzing trace with hash 744210350, now seen corresponding path program 1 times [2023-11-29 01:45:05,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:45:05,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275391225] [2023-11-29 01:45:05,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:45:05,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:45:05,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:45:05,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:45:05,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:45:05,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275391225] [2023-11-29 01:45:05,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275391225] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:45:05,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:45:05,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 01:45:05,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933815862] [2023-11-29 01:45:05,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:45:05,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:45:05,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:45:05,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:45:05,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:45:05,738 INFO L87 Difference]: Start difference. First operand 243342 states and 413760 transitions. Second operand has 4 states, 4 states have (on average 53.5) internal successors, (214), 4 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:45:11,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:45:11,595 INFO L93 Difference]: Finished difference Result 799948 states and 1362306 transitions. [2023-11-29 01:45:11,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:45:11,595 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 53.5) internal successors, (214), 4 states have internal predecessors, (214), 0 states have call successors, (0), 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 214 [2023-11-29 01:45:11,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:45:12,486 INFO L225 Difference]: With dead ends: 799948 [2023-11-29 01:45:12,486 INFO L226 Difference]: Without dead ends: 557164 [2023-11-29 01:45:12,627 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 01:45:12,627 INFO L413 NwaCegarLoop]: 1139 mSDtfsCounter, 584 mSDsluCounter, 2449 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 584 SdHoareTripleChecker+Valid, 3588 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:45:12,627 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [584 Valid, 3588 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:45:13,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 557164 states. [2023-11-29 01:45:20,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 557164 to 399082. [2023-11-29 01:45:21,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 399082 states, 399081 states have (on average 1.6934005878505867) internal successors, (675804), 399081 states have internal predecessors, (675804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:45:22,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399082 states to 399082 states and 675804 transitions. [2023-11-29 01:45:22,178 INFO L78 Accepts]: Start accepts. Automaton has 399082 states and 675804 transitions. Word has length 214 [2023-11-29 01:45:22,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:45:22,179 INFO L495 AbstractCegarLoop]: Abstraction has 399082 states and 675804 transitions. [2023-11-29 01:45:22,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 53.5) internal successors, (214), 4 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:45:22,179 INFO L276 IsEmpty]: Start isEmpty. Operand 399082 states and 675804 transitions. [2023-11-29 01:45:22,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2023-11-29 01:45:22,181 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:45:22,181 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:45:22,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-29 01:45:22,181 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:45:22,182 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:45:22,182 INFO L85 PathProgramCache]: Analyzing trace with hash 741472054, now seen corresponding path program 1 times [2023-11-29 01:45:22,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:45:22,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409418672] [2023-11-29 01:45:22,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:45:22,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:45:22,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:45:22,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:45:22,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:45:22,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409418672] [2023-11-29 01:45:22,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409418672] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:45:22,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:45:22,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 01:45:22,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788024940] [2023-11-29 01:45:22,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:45:22,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 01:45:22,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:45:22,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 01:45:22,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-29 01:45:22,789 INFO L87 Difference]: Start difference. First operand 399082 states and 675804 transitions. Second operand has 7 states, 7 states have (on average 30.857142857142858) internal successors, (216), 7 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:45:28,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:45:28,300 INFO L93 Difference]: Finished difference Result 797608 states and 1350615 transitions. [2023-11-29 01:45:28,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 01:45:28,301 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 30.857142857142858) internal successors, (216), 7 states have internal predecessors, (216), 0 states have call successors, (0), 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 01:45:28,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:45:29,082 INFO L225 Difference]: With dead ends: 797608 [2023-11-29 01:45:29,083 INFO L226 Difference]: Without dead ends: 399084 [2023-11-29 01:45:29,200 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2023-11-29 01:45:29,201 INFO L413 NwaCegarLoop]: 1142 mSDtfsCounter, 159 mSDsluCounter, 5560 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 6702 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:45:29,201 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 6702 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 01:45:29,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399084 states. [2023-11-29 01:45:36,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399084 to 399082. [2023-11-29 01:45:36,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 399082 states, 399081 states have (on average 1.6855700972985435) internal successors, (672679), 399081 states have internal predecessors, (672679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:45:37,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399082 states to 399082 states and 672679 transitions. [2023-11-29 01:45:37,410 INFO L78 Accepts]: Start accepts. Automaton has 399082 states and 672679 transitions. Word has length 216 [2023-11-29 01:45:37,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:45:37,411 INFO L495 AbstractCegarLoop]: Abstraction has 399082 states and 672679 transitions. [2023-11-29 01:45:37,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 30.857142857142858) internal successors, (216), 7 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:45:37,411 INFO L276 IsEmpty]: Start isEmpty. Operand 399082 states and 672679 transitions. [2023-11-29 01:45:37,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2023-11-29 01:45:37,413 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:45:37,413 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:45:37,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-29 01:45:37,413 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:45:37,414 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:45:37,414 INFO L85 PathProgramCache]: Analyzing trace with hash -1406008962, now seen corresponding path program 1 times [2023-11-29 01:45:37,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:45:37,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050467304] [2023-11-29 01:45:37,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:45:37,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:45:37,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:45:37,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:45:37,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:45:37,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050467304] [2023-11-29 01:45:37,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050467304] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:45:37,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:45:37,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 01:45:37,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860935860] [2023-11-29 01:45:37,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:45:37,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 01:45:37,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:45:37,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 01:45:37,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-29 01:45:37,799 INFO L87 Difference]: Start difference. First operand 399082 states and 672679 transitions. Second operand has 7 states, 7 states have (on average 31.285714285714285) internal successors, (219), 7 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:45:46,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:45:46,702 INFO L93 Difference]: Finished difference Result 1180034 states and 1990557 transitions. [2023-11-29 01:45:46,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 01:45:46,702 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 31.285714285714285) internal successors, (219), 7 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 219 [2023-11-29 01:45:46,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:45:47,809 INFO L225 Difference]: With dead ends: 1180034 [2023-11-29 01:45:47,809 INFO L226 Difference]: Without dead ends: 781510 [2023-11-29 01:45:47,979 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2023-11-29 01:45:47,979 INFO L413 NwaCegarLoop]: 1135 mSDtfsCounter, 761 mSDsluCounter, 4476 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 761 SdHoareTripleChecker+Valid, 5611 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 01:45:47,980 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [761 Valid, 5611 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 01:45:48,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 781510 states. [2023-11-29 01:46:02,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 781510 to 781508. [2023-11-29 01:46:02,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 781508 states, 781507 states have (on average 1.6744187831970796) internal successors, (1308570), 781507 states have internal predecessors, (1308570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:46:04,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 781508 states to 781508 states and 1308570 transitions. [2023-11-29 01:46:04,905 INFO L78 Accepts]: Start accepts. Automaton has 781508 states and 1308570 transitions. Word has length 219 [2023-11-29 01:46:04,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:46:04,905 INFO L495 AbstractCegarLoop]: Abstraction has 781508 states and 1308570 transitions. [2023-11-29 01:46:04,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 31.285714285714285) internal successors, (219), 7 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:46:04,905 INFO L276 IsEmpty]: Start isEmpty. Operand 781508 states and 1308570 transitions. [2023-11-29 01:46:04,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2023-11-29 01:46:04,907 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:46:04,907 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:46:04,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-29 01:46:04,907 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:46:04,908 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:46:04,908 INFO L85 PathProgramCache]: Analyzing trace with hash -651242387, now seen corresponding path program 1 times [2023-11-29 01:46:04,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:46:04,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295191947] [2023-11-29 01:46:04,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:46:04,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:46:05,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:46:05,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:46:05,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:46:05,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295191947] [2023-11-29 01:46:05,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295191947] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:46:05,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:46:05,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 01:46:05,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190180203] [2023-11-29 01:46:05,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:46:05,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:46:05,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:46:05,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:46:05,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:46:05,656 INFO L87 Difference]: Start difference. First operand 781508 states and 1308570 transitions. Second operand has 4 states, 4 states have (on average 55.0) internal successors, (220), 4 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:46:13,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:46:13,898 INFO L93 Difference]: Finished difference Result 811684 states and 1348803 transitions. [2023-11-29 01:46:13,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:46:13,899 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 55.0) internal successors, (220), 4 states have internal predecessors, (220), 0 states have call successors, (0), 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 220 [2023-11-29 01:46:13,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:46:15,146 INFO L225 Difference]: With dead ends: 811684 [2023-11-29 01:46:15,147 INFO L226 Difference]: Without dead ends: 811682 [2023-11-29 01:46:15,266 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:46:15,267 INFO L413 NwaCegarLoop]: 1149 mSDtfsCounter, 1 mSDsluCounter, 2283 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 3432 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:46:15,267 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 3432 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:46:15,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 811682 states. [2023-11-29 01:46:29,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 811682 to 801624. [2023-11-29 01:46:30,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 801624 states, 801623 states have (on average 1.6573938123032896) internal successors, (1328605), 801623 states have internal predecessors, (1328605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:46:32,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 801624 states to 801624 states and 1328605 transitions. [2023-11-29 01:46:32,068 INFO L78 Accepts]: Start accepts. Automaton has 801624 states and 1328605 transitions. Word has length 220 [2023-11-29 01:46:32,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:46:32,069 INFO L495 AbstractCegarLoop]: Abstraction has 801624 states and 1328605 transitions. [2023-11-29 01:46:32,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 55.0) internal successors, (220), 4 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:46:32,069 INFO L276 IsEmpty]: Start isEmpty. Operand 801624 states and 1328605 transitions. [2023-11-29 01:46:32,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2023-11-29 01:46:32,082 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:46:32,082 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:46:32,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-29 01:46:32,082 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:46:32,083 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:46:32,083 INFO L85 PathProgramCache]: Analyzing trace with hash -932344726, now seen corresponding path program 1 times [2023-11-29 01:46:32,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:46:32,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726961312] [2023-11-29 01:46:32,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:46:32,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:46:32,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:46:32,224 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:46:32,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:46:32,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726961312] [2023-11-29 01:46:32,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726961312] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:46:32,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:46:32,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:46:32,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422290655] [2023-11-29 01:46:32,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:46:32,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:46:32,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:46:32,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:46:32,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:46:32,227 INFO L87 Difference]: Start difference. First operand 801624 states and 1328605 transitions. Second operand has 3 states, 3 states have (on average 88.66666666666667) internal successors, (266), 3 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:46:49,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:46:49,786 INFO L93 Difference]: Finished difference Result 2399943 states and 3975979 transitions. [2023-11-29 01:46:49,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:46:49,787 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 88.66666666666667) internal successors, (266), 3 states have internal predecessors, (266), 0 states have call successors, (0), 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 266 [2023-11-29 01:46:49,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:46:52,571 INFO L225 Difference]: With dead ends: 2399943 [2023-11-29 01:46:52,571 INFO L226 Difference]: Without dead ends: 1598419 [2023-11-29 01:46:52,885 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:46:52,888 INFO L413 NwaCegarLoop]: 1977 mSDtfsCounter, 953 mSDsluCounter, 1126 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 953 SdHoareTripleChecker+Valid, 3103 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:46:52,888 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [953 Valid, 3103 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:46:53,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1598419 states.