./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.8.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4fc63b2a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91048779-a95f-4fe3-88e0-de8b84c82e91/bin/uautomizer-verify-4GaUIPS5ZU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91048779-a95f-4fe3-88e0-de8b84c82e91/bin/uautomizer-verify-4GaUIPS5ZU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91048779-a95f-4fe3-88e0-de8b84c82e91/bin/uautomizer-verify-4GaUIPS5ZU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91048779-a95f-4fe3-88e0-de8b84c82e91/bin/uautomizer-verify-4GaUIPS5ZU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.8.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91048779-a95f-4fe3-88e0-de8b84c82e91/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91048779-a95f-4fe3-88e0-de8b84c82e91/bin/uautomizer-verify-4GaUIPS5ZU --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 d09ea01cef1d93b0c86c8a3dadfd601718ca81915e873154848504beefeee43f --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-10-31 21:56:18,639 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-31 21:56:18,768 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91048779-a95f-4fe3-88e0-de8b84c82e91/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-31 21:56:18,780 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-31 21:56:18,780 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-31 21:56:18,826 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-31 21:56:18,827 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-31 21:56:18,831 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-31 21:56:18,831 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-31 21:56:18,832 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-31 21:56:18,832 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-31 21:56:18,833 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-31 21:56:18,834 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-31 21:56:18,834 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-31 21:56:18,838 INFO L153 SettingsManager]: * Use SBE=true [2024-10-31 21:56:18,838 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-31 21:56:18,839 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-31 21:56:18,839 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-31 21:56:18,840 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-31 21:56:18,840 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-31 21:56:18,840 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-31 21:56:18,843 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-31 21:56:18,845 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-31 21:56:18,845 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-31 21:56:18,846 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-31 21:56:18,850 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-31 21:56:18,850 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-31 21:56:18,850 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-31 21:56:18,851 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-31 21:56:18,851 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-31 21:56:18,852 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-31 21:56:18,852 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-31 21:56:18,852 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 21:56:18,853 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-31 21:56:18,853 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-31 21:56:18,853 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-31 21:56:18,858 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-31 21:56:18,858 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-31 21:56:18,858 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-31 21:56:18,859 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-31 21:56:18,859 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-31 21:56:18,860 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-31 21:56:18,860 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_91048779-a95f-4fe3-88e0-de8b84c82e91/bin/uautomizer-verify-4GaUIPS5ZU/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91048779-a95f-4fe3-88e0-de8b84c82e91/bin/uautomizer-verify-4GaUIPS5ZU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d09ea01cef1d93b0c86c8a3dadfd601718ca81915e873154848504beefeee43f [2024-10-31 21:56:19,317 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-31 21:56:19,351 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-31 21:56:19,354 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-31 21:56:19,355 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-31 21:56:19,356 INFO L274 PluginConnector]: CDTParser initialized [2024-10-31 21:56:19,357 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91048779-a95f-4fe3-88e0-de8b84c82e91/bin/uautomizer-verify-4GaUIPS5ZU/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.8.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c Unable to find full path for "g++" [2024-10-31 21:56:21,574 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-31 21:56:21,843 INFO L384 CDTParser]: Found 1 translation units. [2024-10-31 21:56:21,844 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91048779-a95f-4fe3-88e0-de8b84c82e91/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.8.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2024-10-31 21:56:21,864 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91048779-a95f-4fe3-88e0-de8b84c82e91/bin/uautomizer-verify-4GaUIPS5ZU/data/4f6b18901/1033c0c1666a449c9cec575c8c4e2333/FLAG7bda629e0 [2024-10-31 21:56:21,882 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91048779-a95f-4fe3-88e0-de8b84c82e91/bin/uautomizer-verify-4GaUIPS5ZU/data/4f6b18901/1033c0c1666a449c9cec575c8c4e2333 [2024-10-31 21:56:21,885 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-31 21:56:21,886 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-31 21:56:21,887 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-31 21:56:21,888 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-31 21:56:21,894 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-31 21:56:21,895 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 09:56:21" (1/1) ... [2024-10-31 21:56:21,897 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@498f9fc7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:56:21, skipping insertion in model container [2024-10-31 21:56:21,897 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 09:56:21" (1/1) ... [2024-10-31 21:56:21,978 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-31 21:56:22,465 WARN L251 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_91048779-a95f-4fe3-88e0-de8b84c82e91/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.8.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[11680,11693] [2024-10-31 21:56:22,563 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 21:56:22,588 INFO L200 MainTranslator]: Completed pre-run [2024-10-31 21:56:22,680 WARN L251 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_91048779-a95f-4fe3-88e0-de8b84c82e91/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.8.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[11680,11693] [2024-10-31 21:56:22,738 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 21:56:22,766 INFO L204 MainTranslator]: Completed translation [2024-10-31 21:56:22,767 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:56:22 WrapperNode [2024-10-31 21:56:22,767 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-31 21:56:22,768 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-31 21:56:22,768 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-31 21:56:22,769 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-31 21:56:22,775 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:56:22" (1/1) ... [2024-10-31 21:56:22,790 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:56:22" (1/1) ... [2024-10-31 21:56:22,885 INFO L138 Inliner]: procedures = 28, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1033 [2024-10-31 21:56:22,885 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-31 21:56:22,886 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-31 21:56:22,886 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-31 21:56:22,886 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-31 21:56:22,902 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:56:22" (1/1) ... [2024-10-31 21:56:22,902 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:56:22" (1/1) ... [2024-10-31 21:56:22,913 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:56:22" (1/1) ... [2024-10-31 21:56:22,937 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]. [2024-10-31 21:56:22,938 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:56:22" (1/1) ... [2024-10-31 21:56:22,938 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:56:22" (1/1) ... [2024-10-31 21:56:22,954 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:56:22" (1/1) ... [2024-10-31 21:56:22,963 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:56:22" (1/1) ... [2024-10-31 21:56:22,968 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:56:22" (1/1) ... [2024-10-31 21:56:22,971 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:56:22" (1/1) ... [2024-10-31 21:56:22,978 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-31 21:56:22,980 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-31 21:56:22,980 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-31 21:56:22,980 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-31 21:56:22,981 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:56:22" (1/1) ... [2024-10-31 21:56:22,992 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 21:56:23,005 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91048779-a95f-4fe3-88e0-de8b84c82e91/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:56:23,021 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91048779-a95f-4fe3-88e0-de8b84c82e91/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-31 21:56:23,025 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91048779-a95f-4fe3-88e0-de8b84c82e91/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-31 21:56:23,065 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-31 21:56:23,066 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-31 21:56:23,067 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-31 21:56:23,068 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-31 21:56:23,229 INFO L238 CfgBuilder]: Building ICFG [2024-10-31 21:56:23,231 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-31 21:56:24,423 INFO L? ?]: Removed 115 outVars from TransFormulas that were not future-live. [2024-10-31 21:56:24,423 INFO L287 CfgBuilder]: Performing block encoding [2024-10-31 21:56:24,441 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-31 21:56:24,441 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-10-31 21:56:24,442 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 09:56:24 BoogieIcfgContainer [2024-10-31 21:56:24,442 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-31 21:56:24,444 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-31 21:56:24,444 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-31 21:56:24,448 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-31 21:56:24,448 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.10 09:56:21" (1/3) ... [2024-10-31 21:56:24,449 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39ed1d75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 09:56:24, skipping insertion in model container [2024-10-31 21:56:24,449 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:56:22" (2/3) ... [2024-10-31 21:56:24,450 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39ed1d75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 09:56:24, skipping insertion in model container [2024-10-31 21:56:24,450 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 09:56:24" (3/3) ... [2024-10-31 21:56:24,451 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.8.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2024-10-31 21:56:24,472 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-31 21:56:24,473 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-31 21:56:24,576 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 21:56:24,588 INFO L333 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, 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;@7f65ab5c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 21:56:24,589 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-31 21:56:24,596 INFO L276 IsEmpty]: Start isEmpty. Operand has 231 states, 229 states have (on average 1.7685589519650655) internal successors, (405), 230 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:56:24,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-10-31 21:56:24,614 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 21:56:24,615 INFO L215 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] [2024-10-31 21:56:24,616 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 21:56:24,623 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:56:24,623 INFO L85 PathProgramCache]: Analyzing trace with hash 96284054, now seen corresponding path program 1 times [2024-10-31 21:56:24,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:56:24,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962074178] [2024-10-31 21:56:24,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:56:24,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:56:25,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:26,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:56:26,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:56:26,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962074178] [2024-10-31 21:56:26,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1962074178] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:56:26,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:56:26,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-10-31 21:56:26,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555868500] [2024-10-31 21:56:26,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:56:26,116 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-31 21:56:26,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:56:26,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-31 21:56:26,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-10-31 21:56:26,162 INFO L87 Difference]: Start difference. First operand has 231 states, 229 states have (on average 1.7685589519650655) internal successors, (405), 230 states have internal predecessors, (405), 0 states have call successors, (0), 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 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:56:27,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 21:56:27,434 INFO L93 Difference]: Finished difference Result 1826 states and 2955 transitions. [2024-10-31 21:56:27,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-10-31 21:56:27,437 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 124 [2024-10-31 21:56:27,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 21:56:27,466 INFO L225 Difference]: With dead ends: 1826 [2024-10-31 21:56:27,466 INFO L226 Difference]: Without dead ends: 1705 [2024-10-31 21:56:27,471 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=162, Invalid=344, Unknown=0, NotChecked=0, Total=506 [2024-10-31 21:56:27,475 INFO L432 NwaCegarLoop]: 1002 mSDtfsCounter, 3815 mSDsluCounter, 7214 mSDsCounter, 0 mSdLazyCounter, 558 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3815 SdHoareTripleChecker+Valid, 8216 SdHoareTripleChecker+Invalid, 570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 558 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-31 21:56:27,477 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3815 Valid, 8216 Invalid, 570 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [12 Valid, 558 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-31 21:56:27,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1705 states. [2024-10-31 21:56:27,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1705 to 348. [2024-10-31 21:56:27,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 348 states, 347 states have (on average 1.446685878962536) internal successors, (502), 347 states have internal predecessors, (502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:56:27,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 502 transitions. [2024-10-31 21:56:27,596 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 502 transitions. Word has length 124 [2024-10-31 21:56:27,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 21:56:27,598 INFO L471 AbstractCegarLoop]: Abstraction has 348 states and 502 transitions. [2024-10-31 21:56:27,598 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:56:27,599 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 502 transitions. [2024-10-31 21:56:27,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2024-10-31 21:56:27,602 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 21:56:27,603 INFO L215 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] [2024-10-31 21:56:27,603 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-31 21:56:27,604 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 21:56:27,605 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:56:27,605 INFO L85 PathProgramCache]: Analyzing trace with hash -1563387348, now seen corresponding path program 1 times [2024-10-31 21:56:27,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:56:27,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323425205] [2024-10-31 21:56:27,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:56:27,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:56:27,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:28,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:56:28,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:56:28,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323425205] [2024-10-31 21:56:28,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323425205] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:56:28,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:56:28,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-10-31 21:56:28,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714788442] [2024-10-31 21:56:28,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:56:28,331 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-31 21:56:28,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:56:28,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-31 21:56:28,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-10-31 21:56:28,334 INFO L87 Difference]: Start difference. First operand 348 states and 502 transitions. Second operand has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:56:28,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 21:56:28,999 INFO L93 Difference]: Finished difference Result 1960 states and 3067 transitions. [2024-10-31 21:56:29,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-31 21:56:29,000 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 states have internal predecessors, (126), 0 states have call successors, (0), 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 126 [2024-10-31 21:56:29,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 21:56:29,007 INFO L225 Difference]: With dead ends: 1960 [2024-10-31 21:56:29,007 INFO L226 Difference]: Without dead ends: 1780 [2024-10-31 21:56:29,009 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2024-10-31 21:56:29,010 INFO L432 NwaCegarLoop]: 963 mSDtfsCounter, 2723 mSDsluCounter, 3087 mSDsCounter, 0 mSdLazyCounter, 371 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2723 SdHoareTripleChecker+Valid, 4050 SdHoareTripleChecker+Invalid, 379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-31 21:56:29,011 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2723 Valid, 4050 Invalid, 379 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 371 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-31 21:56:29,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1780 states. [2024-10-31 21:56:29,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1780 to 552. [2024-10-31 21:56:29,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 552 states, 551 states have (on average 1.5027223230490019) internal successors, (828), 551 states have internal predecessors, (828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:56:29,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 552 states to 552 states and 828 transitions. [2024-10-31 21:56:29,053 INFO L78 Accepts]: Start accepts. Automaton has 552 states and 828 transitions. Word has length 126 [2024-10-31 21:56:29,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 21:56:29,053 INFO L471 AbstractCegarLoop]: Abstraction has 552 states and 828 transitions. [2024-10-31 21:56:29,054 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:56:29,054 INFO L276 IsEmpty]: Start isEmpty. Operand 552 states and 828 transitions. [2024-10-31 21:56:29,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2024-10-31 21:56:29,056 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 21:56:29,056 INFO L215 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] [2024-10-31 21:56:29,056 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-31 21:56:29,059 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 21:56:29,060 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:56:29,060 INFO L85 PathProgramCache]: Analyzing trace with hash 714482392, now seen corresponding path program 1 times [2024-10-31 21:56:29,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:56:29,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836992387] [2024-10-31 21:56:29,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:56:29,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:56:29,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:29,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:56:29,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:56:29,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836992387] [2024-10-31 21:56:29,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836992387] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:56:29,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:56:29,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-10-31 21:56:29,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521971095] [2024-10-31 21:56:29,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:56:29,544 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-31 21:56:29,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:56:29,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-31 21:56:29,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-10-31 21:56:29,548 INFO L87 Difference]: Start difference. First operand 552 states and 828 transitions. Second operand has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:56:30,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 21:56:30,093 INFO L93 Difference]: Finished difference Result 2164 states and 3393 transitions. [2024-10-31 21:56:30,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-31 21:56:30,093 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 states have internal predecessors, (126), 0 states have call successors, (0), 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 126 [2024-10-31 21:56:30,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 21:56:30,101 INFO L225 Difference]: With dead ends: 2164 [2024-10-31 21:56:30,101 INFO L226 Difference]: Without dead ends: 1984 [2024-10-31 21:56:30,103 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2024-10-31 21:56:30,104 INFO L432 NwaCegarLoop]: 830 mSDtfsCounter, 2890 mSDsluCounter, 2706 mSDsCounter, 0 mSdLazyCounter, 330 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2890 SdHoareTripleChecker+Valid, 3536 SdHoareTripleChecker+Invalid, 338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-31 21:56:30,105 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2890 Valid, 3536 Invalid, 338 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 330 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-31 21:56:30,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1984 states. [2024-10-31 21:56:30,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1984 to 840. [2024-10-31 21:56:30,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 840 states, 839 states have (on average 1.535160905840286) internal successors, (1288), 839 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:56:30,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 840 states to 840 states and 1288 transitions. [2024-10-31 21:56:30,141 INFO L78 Accepts]: Start accepts. Automaton has 840 states and 1288 transitions. Word has length 126 [2024-10-31 21:56:30,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 21:56:30,142 INFO L471 AbstractCegarLoop]: Abstraction has 840 states and 1288 transitions. [2024-10-31 21:56:30,143 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:56:30,143 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states and 1288 transitions. [2024-10-31 21:56:30,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2024-10-31 21:56:30,146 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 21:56:30,146 INFO L215 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] [2024-10-31 21:56:30,146 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-31 21:56:30,147 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 21:56:30,147 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:56:30,148 INFO L85 PathProgramCache]: Analyzing trace with hash -2024644258, now seen corresponding path program 1 times [2024-10-31 21:56:30,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:56:30,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224041159] [2024-10-31 21:56:30,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:56:30,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:56:30,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:30,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:56:30,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:56:30,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224041159] [2024-10-31 21:56:30,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224041159] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:56:30,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:56:30,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-10-31 21:56:30,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246891082] [2024-10-31 21:56:30,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:56:30,638 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-31 21:56:30,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:56:30,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-31 21:56:30,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-10-31 21:56:30,640 INFO L87 Difference]: Start difference. First operand 840 states and 1288 transitions. Second operand has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:56:31,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 21:56:31,115 INFO L93 Difference]: Finished difference Result 2358 states and 3703 transitions. [2024-10-31 21:56:31,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-31 21:56:31,116 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 states have internal predecessors, (126), 0 states have call successors, (0), 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 126 [2024-10-31 21:56:31,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 21:56:31,123 INFO L225 Difference]: With dead ends: 2358 [2024-10-31 21:56:31,124 INFO L226 Difference]: Without dead ends: 2178 [2024-10-31 21:56:31,125 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2024-10-31 21:56:31,126 INFO L432 NwaCegarLoop]: 704 mSDtfsCounter, 3488 mSDsluCounter, 2366 mSDsCounter, 0 mSdLazyCounter, 295 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3488 SdHoareTripleChecker+Valid, 3070 SdHoareTripleChecker+Invalid, 303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-31 21:56:31,127 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3488 Valid, 3070 Invalid, 303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 295 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-31 21:56:31,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2178 states. [2024-10-31 21:56:31,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2178 to 1034. [2024-10-31 21:56:31,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1034 states, 1033 states have (on average 1.546950629235237) internal successors, (1598), 1033 states have internal predecessors, (1598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:56:31,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1034 states to 1034 states and 1598 transitions. [2024-10-31 21:56:31,167 INFO L78 Accepts]: Start accepts. Automaton has 1034 states and 1598 transitions. Word has length 126 [2024-10-31 21:56:31,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 21:56:31,167 INFO L471 AbstractCegarLoop]: Abstraction has 1034 states and 1598 transitions. [2024-10-31 21:56:31,168 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:56:31,168 INFO L276 IsEmpty]: Start isEmpty. Operand 1034 states and 1598 transitions. [2024-10-31 21:56:31,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2024-10-31 21:56:31,170 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 21:56:31,170 INFO L215 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] [2024-10-31 21:56:31,170 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-31 21:56:31,171 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 21:56:31,171 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:56:31,171 INFO L85 PathProgramCache]: Analyzing trace with hash -292095440, now seen corresponding path program 1 times [2024-10-31 21:56:31,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:56:31,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175439349] [2024-10-31 21:56:31,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:56:31,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:56:31,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:31,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:56:31,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:56:31,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175439349] [2024-10-31 21:56:31,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175439349] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:56:31,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:56:31,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-10-31 21:56:31,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801476915] [2024-10-31 21:56:31,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:56:31,694 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-31 21:56:31,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:56:31,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-31 21:56:31,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-10-31 21:56:31,695 INFO L87 Difference]: Start difference. First operand 1034 states and 1598 transitions. Second operand has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:56:32,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 21:56:32,251 INFO L93 Difference]: Finished difference Result 2547 states and 4005 transitions. [2024-10-31 21:56:32,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-31 21:56:32,252 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 states have internal predecessors, (126), 0 states have call successors, (0), 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 126 [2024-10-31 21:56:32,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 21:56:32,260 INFO L225 Difference]: With dead ends: 2547 [2024-10-31 21:56:32,261 INFO L226 Difference]: Without dead ends: 2367 [2024-10-31 21:56:32,262 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2024-10-31 21:56:32,263 INFO L432 NwaCegarLoop]: 562 mSDtfsCounter, 3813 mSDsluCounter, 2741 mSDsCounter, 0 mSdLazyCounter, 314 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3813 SdHoareTripleChecker+Valid, 3303 SdHoareTripleChecker+Invalid, 322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-31 21:56:32,264 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3813 Valid, 3303 Invalid, 322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 314 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-31 21:56:32,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2367 states. [2024-10-31 21:56:32,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2367 to 1213. [2024-10-31 21:56:32,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1213 states, 1212 states have (on average 1.5544554455445545) internal successors, (1884), 1212 states have internal predecessors, (1884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:56:32,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1213 states to 1213 states and 1884 transitions. [2024-10-31 21:56:32,315 INFO L78 Accepts]: Start accepts. Automaton has 1213 states and 1884 transitions. Word has length 126 [2024-10-31 21:56:32,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 21:56:32,316 INFO L471 AbstractCegarLoop]: Abstraction has 1213 states and 1884 transitions. [2024-10-31 21:56:32,317 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:56:32,317 INFO L276 IsEmpty]: Start isEmpty. Operand 1213 states and 1884 transitions. [2024-10-31 21:56:32,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2024-10-31 21:56:32,319 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 21:56:32,320 INFO L215 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] [2024-10-31 21:56:32,320 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-31 21:56:32,320 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 21:56:32,321 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:56:32,321 INFO L85 PathProgramCache]: Analyzing trace with hash 344464438, now seen corresponding path program 1 times [2024-10-31 21:56:32,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:56:32,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628176131] [2024-10-31 21:56:32,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:56:32,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:56:32,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:32,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:56:32,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:56:32,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628176131] [2024-10-31 21:56:32,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628176131] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:56:32,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:56:32,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-10-31 21:56:32,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96327751] [2024-10-31 21:56:32,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:56:32,821 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-31 21:56:32,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:56:32,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-31 21:56:32,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-10-31 21:56:32,823 INFO L87 Difference]: Start difference. First operand 1213 states and 1884 transitions. Second operand has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:56:33,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 21:56:33,322 INFO L93 Difference]: Finished difference Result 2725 states and 4290 transitions. [2024-10-31 21:56:33,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-31 21:56:33,323 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 states have internal predecessors, (126), 0 states have call successors, (0), 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 126 [2024-10-31 21:56:33,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 21:56:33,334 INFO L225 Difference]: With dead ends: 2725 [2024-10-31 21:56:33,334 INFO L226 Difference]: Without dead ends: 2545 [2024-10-31 21:56:33,335 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2024-10-31 21:56:33,336 INFO L432 NwaCegarLoop]: 443 mSDtfsCounter, 3953 mSDsluCounter, 2722 mSDsCounter, 0 mSdLazyCounter, 286 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3953 SdHoareTripleChecker+Valid, 3165 SdHoareTripleChecker+Invalid, 293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-31 21:56:33,337 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3953 Valid, 3165 Invalid, 293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 286 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-31 21:56:33,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2545 states. [2024-10-31 21:56:33,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2545 to 1391. [2024-10-31 21:56:33,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1391 states, 1390 states have (on average 1.5604316546762589) internal successors, (2169), 1390 states have internal predecessors, (2169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:56:33,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1391 states to 1391 states and 2169 transitions. [2024-10-31 21:56:33,389 INFO L78 Accepts]: Start accepts. Automaton has 1391 states and 2169 transitions. Word has length 126 [2024-10-31 21:56:33,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 21:56:33,389 INFO L471 AbstractCegarLoop]: Abstraction has 1391 states and 2169 transitions. [2024-10-31 21:56:33,389 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:56:33,389 INFO L276 IsEmpty]: Start isEmpty. Operand 1391 states and 2169 transitions. [2024-10-31 21:56:33,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2024-10-31 21:56:33,391 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 21:56:33,391 INFO L215 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] [2024-10-31 21:56:33,391 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-31 21:56:33,391 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 21:56:33,394 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:56:33,394 INFO L85 PathProgramCache]: Analyzing trace with hash -1799008799, now seen corresponding path program 1 times [2024-10-31 21:56:33,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:56:33,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904978010] [2024-10-31 21:56:33,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:56:33,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:56:33,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:34,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:56:34,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:56:34,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904978010] [2024-10-31 21:56:34,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904978010] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:56:34,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:56:34,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-10-31 21:56:34,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14496186] [2024-10-31 21:56:34,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:56:34,184 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-31 21:56:34,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:56:34,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-31 21:56:34,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-10-31 21:56:34,185 INFO L87 Difference]: Start difference. First operand 1391 states and 2169 transitions. Second operand has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:56:34,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 21:56:34,932 INFO L93 Difference]: Finished difference Result 2552 states and 4024 transitions. [2024-10-31 21:56:34,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-31 21:56:34,933 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 states have internal predecessors, (126), 0 states have call successors, (0), 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 126 [2024-10-31 21:56:34,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 21:56:34,937 INFO L225 Difference]: With dead ends: 2552 [2024-10-31 21:56:34,938 INFO L226 Difference]: Without dead ends: 1393 [2024-10-31 21:56:34,939 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=84, Invalid=156, Unknown=0, NotChecked=0, Total=240 [2024-10-31 21:56:34,940 INFO L432 NwaCegarLoop]: 299 mSDtfsCounter, 768 mSDsluCounter, 1298 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 768 SdHoareTripleChecker+Valid, 1597 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-31 21:56:34,940 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [768 Valid, 1597 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-31 21:56:34,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1393 states. [2024-10-31 21:56:34,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1393 to 1391. [2024-10-31 21:56:34,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1391 states, 1390 states have (on average 1.5553956834532374) internal successors, (2162), 1390 states have internal predecessors, (2162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:56:34,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1391 states to 1391 states and 2162 transitions. [2024-10-31 21:56:34,972 INFO L78 Accepts]: Start accepts. Automaton has 1391 states and 2162 transitions. Word has length 126 [2024-10-31 21:56:34,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 21:56:34,972 INFO L471 AbstractCegarLoop]: Abstraction has 1391 states and 2162 transitions. [2024-10-31 21:56:34,973 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:56:34,973 INFO L276 IsEmpty]: Start isEmpty. Operand 1391 states and 2162 transitions. [2024-10-31 21:56:34,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2024-10-31 21:56:34,974 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 21:56:34,975 INFO L215 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] [2024-10-31 21:56:34,975 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-31 21:56:34,975 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 21:56:34,975 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:56:34,976 INFO L85 PathProgramCache]: Analyzing trace with hash -2079312318, now seen corresponding path program 1 times [2024-10-31 21:56:34,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:56:34,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486458349] [2024-10-31 21:56:34,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:56:34,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:56:35,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:35,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:56:35,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:56:35,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486458349] [2024-10-31 21:56:35,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486458349] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:56:35,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:56:35,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 21:56:35,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519998670] [2024-10-31 21:56:35,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:56:35,102 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 21:56:35,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:56:35,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 21:56:35,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 21:56:35,103 INFO L87 Difference]: Start difference. First operand 1391 states and 2162 transitions. Second operand has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:56:35,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 21:56:35,171 INFO L93 Difference]: Finished difference Result 3625 states and 5715 transitions. [2024-10-31 21:56:35,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 21:56:35,172 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 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 126 [2024-10-31 21:56:35,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 21:56:35,179 INFO L225 Difference]: With dead ends: 3625 [2024-10-31 21:56:35,180 INFO L226 Difference]: Without dead ends: 2466 [2024-10-31 21:56:35,181 INFO L431 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 [2024-10-31 21:56:35,182 INFO L432 NwaCegarLoop]: 437 mSDtfsCounter, 131 mSDsluCounter, 296 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 733 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-31 21:56:35,183 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 733 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-31 21:56:35,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2466 states. [2024-10-31 21:56:35,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2466 to 2438. [2024-10-31 21:56:35,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2438 states, 2437 states have (on average 1.5601148953631514) internal successors, (3802), 2437 states have internal predecessors, (3802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:56:35,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2438 states to 2438 states and 3802 transitions. [2024-10-31 21:56:35,248 INFO L78 Accepts]: Start accepts. Automaton has 2438 states and 3802 transitions. Word has length 126 [2024-10-31 21:56:35,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 21:56:35,249 INFO L471 AbstractCegarLoop]: Abstraction has 2438 states and 3802 transitions. [2024-10-31 21:56:35,249 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:56:35,249 INFO L276 IsEmpty]: Start isEmpty. Operand 2438 states and 3802 transitions. [2024-10-31 21:56:35,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2024-10-31 21:56:35,251 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 21:56:35,251 INFO L215 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] [2024-10-31 21:56:35,251 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-31 21:56:35,252 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 21:56:35,252 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:56:35,252 INFO L85 PathProgramCache]: Analyzing trace with hash 75972018, now seen corresponding path program 1 times [2024-10-31 21:56:35,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:56:35,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301268686] [2024-10-31 21:56:35,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:56:35,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:56:35,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:35,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:56:35,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:56:35,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301268686] [2024-10-31 21:56:35,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301268686] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:56:35,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:56:35,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-10-31 21:56:35,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2178127] [2024-10-31 21:56:35,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:56:35,704 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-31 21:56:35,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:56:35,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-31 21:56:35,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-10-31 21:56:35,706 INFO L87 Difference]: Start difference. First operand 2438 states and 3802 transitions. Second operand has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:56:36,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 21:56:36,231 INFO L93 Difference]: Finished difference Result 5239 states and 8225 transitions. [2024-10-31 21:56:36,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-31 21:56:36,232 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 states have internal predecessors, (126), 0 states have call successors, (0), 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 126 [2024-10-31 21:56:36,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 21:56:36,246 INFO L225 Difference]: With dead ends: 5239 [2024-10-31 21:56:36,246 INFO L226 Difference]: Without dead ends: 4898 [2024-10-31 21:56:36,248 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2024-10-31 21:56:36,249 INFO L432 NwaCegarLoop]: 571 mSDtfsCounter, 2947 mSDsluCounter, 3087 mSDsCounter, 0 mSdLazyCounter, 341 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2947 SdHoareTripleChecker+Valid, 3658 SdHoareTripleChecker+Invalid, 349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-31 21:56:36,249 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2947 Valid, 3658 Invalid, 349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 341 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-31 21:56:36,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4898 states. [2024-10-31 21:56:36,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4898 to 2783. [2024-10-31 21:56:36,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2783 states, 2782 states have (on average 1.5625449317038103) internal successors, (4347), 2782 states have internal predecessors, (4347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:56:36,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2783 states to 2783 states and 4347 transitions. [2024-10-31 21:56:36,380 INFO L78 Accepts]: Start accepts. Automaton has 2783 states and 4347 transitions. Word has length 126 [2024-10-31 21:56:36,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 21:56:36,380 INFO L471 AbstractCegarLoop]: Abstraction has 2783 states and 4347 transitions. [2024-10-31 21:56:36,381 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:56:36,381 INFO L276 IsEmpty]: Start isEmpty. Operand 2783 states and 4347 transitions. [2024-10-31 21:56:36,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2024-10-31 21:56:36,383 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 21:56:36,383 INFO L215 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] [2024-10-31 21:56:36,384 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-31 21:56:36,384 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 21:56:36,385 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:56:36,385 INFO L85 PathProgramCache]: Analyzing trace with hash 1961504132, now seen corresponding path program 1 times [2024-10-31 21:56:36,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:56:36,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130896355] [2024-10-31 21:56:36,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:56:36,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:56:36,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:36,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:56:36,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:56:36,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130896355] [2024-10-31 21:56:36,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130896355] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:56:36,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:56:36,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-10-31 21:56:36,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611358257] [2024-10-31 21:56:36,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:56:36,815 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-31 21:56:36,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:56:36,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-31 21:56:36,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-10-31 21:56:36,816 INFO L87 Difference]: Start difference. First operand 2783 states and 4347 transitions. Second operand has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:56:37,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 21:56:37,330 INFO L93 Difference]: Finished difference Result 5584 states and 8770 transitions. [2024-10-31 21:56:37,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-31 21:56:37,330 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 states have internal predecessors, (126), 0 states have call successors, (0), 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 126 [2024-10-31 21:56:37,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 21:56:37,359 INFO L225 Difference]: With dead ends: 5584 [2024-10-31 21:56:37,362 INFO L226 Difference]: Without dead ends: 5243 [2024-10-31 21:56:37,365 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2024-10-31 21:56:37,366 INFO L432 NwaCegarLoop]: 579 mSDtfsCounter, 3051 mSDsluCounter, 3854 mSDsCounter, 0 mSdLazyCounter, 357 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3051 SdHoareTripleChecker+Valid, 4433 SdHoareTripleChecker+Invalid, 365 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-31 21:56:37,366 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3051 Valid, 4433 Invalid, 365 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 357 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-31 21:56:37,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5243 states. [2024-10-31 21:56:37,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5243 to 3133. [2024-10-31 21:56:37,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3133 states, 3132 states have (on average 1.5644955300127714) internal successors, (4900), 3132 states have internal predecessors, (4900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:56:37,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3133 states to 3133 states and 4900 transitions. [2024-10-31 21:56:37,498 INFO L78 Accepts]: Start accepts. Automaton has 3133 states and 4900 transitions. Word has length 126 [2024-10-31 21:56:37,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 21:56:37,498 INFO L471 AbstractCegarLoop]: Abstraction has 3133 states and 4900 transitions. [2024-10-31 21:56:37,499 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:56:37,499 INFO L276 IsEmpty]: Start isEmpty. Operand 3133 states and 4900 transitions. [2024-10-31 21:56:37,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2024-10-31 21:56:37,500 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 21:56:37,501 INFO L215 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] [2024-10-31 21:56:37,501 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-31 21:56:37,501 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 21:56:37,502 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:56:37,502 INFO L85 PathProgramCache]: Analyzing trace with hash 804381450, now seen corresponding path program 1 times [2024-10-31 21:56:37,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:56:37,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355349742] [2024-10-31 21:56:37,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:56:37,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:56:37,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:37,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:56:37,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:56:37,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355349742] [2024-10-31 21:56:37,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355349742] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:56:37,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:56:37,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-10-31 21:56:37,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222247972] [2024-10-31 21:56:37,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:56:37,869 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-31 21:56:37,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:56:37,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-31 21:56:37,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-10-31 21:56:37,871 INFO L87 Difference]: Start difference. First operand 3133 states and 4900 transitions. Second operand has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:56:38,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 21:56:38,343 INFO L93 Difference]: Finished difference Result 5944 states and 9339 transitions. [2024-10-31 21:56:38,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-31 21:56:38,343 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 states have internal predecessors, (126), 0 states have call successors, (0), 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 126 [2024-10-31 21:56:38,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 21:56:38,364 INFO L225 Difference]: With dead ends: 5944 [2024-10-31 21:56:38,364 INFO L226 Difference]: Without dead ends: 5603 [2024-10-31 21:56:38,367 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2024-10-31 21:56:38,368 INFO L432 NwaCegarLoop]: 486 mSDtfsCounter, 3391 mSDsluCounter, 4130 mSDsCounter, 0 mSdLazyCounter, 298 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3391 SdHoareTripleChecker+Valid, 4616 SdHoareTripleChecker+Invalid, 306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-31 21:56:38,368 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3391 Valid, 4616 Invalid, 306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 298 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-31 21:56:38,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5603 states. [2024-10-31 21:56:38,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5603 to 3498. [2024-10-31 21:56:38,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3498 states, 3497 states have (on average 1.5661995996568487) internal successors, (5477), 3497 states have internal predecessors, (5477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:56:38,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3498 states to 3498 states and 5477 transitions. [2024-10-31 21:56:38,496 INFO L78 Accepts]: Start accepts. Automaton has 3498 states and 5477 transitions. Word has length 126 [2024-10-31 21:56:38,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 21:56:38,497 INFO L471 AbstractCegarLoop]: Abstraction has 3498 states and 5477 transitions. [2024-10-31 21:56:38,497 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:56:38,497 INFO L276 IsEmpty]: Start isEmpty. Operand 3498 states and 5477 transitions. [2024-10-31 21:56:38,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2024-10-31 21:56:38,499 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 21:56:38,499 INFO L215 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] [2024-10-31 21:56:38,499 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-31 21:56:38,500 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 21:56:38,500 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:56:38,500 INFO L85 PathProgramCache]: Analyzing trace with hash 63392965, now seen corresponding path program 1 times [2024-10-31 21:56:38,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:56:38,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27527899] [2024-10-31 21:56:38,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:56:38,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:56:38,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:38,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:56:38,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:56:38,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27527899] [2024-10-31 21:56:38,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27527899] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:56:38,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:56:38,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-31 21:56:38,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926739660] [2024-10-31 21:56:38,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:56:38,682 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 21:56:38,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:56:38,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 21:56:38,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-31 21:56:38,683 INFO L87 Difference]: Start difference. First operand 3498 states and 5477 transitions. Second operand has 5 states, 5 states have (on average 25.4) internal successors, (127), 4 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:56:39,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 21:56:39,106 INFO L93 Difference]: Finished difference Result 10285 states and 16189 transitions. [2024-10-31 21:56:39,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-31 21:56:39,106 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.4) internal successors, (127), 4 states have internal predecessors, (127), 0 states have call successors, (0), 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 127 [2024-10-31 21:56:39,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 21:56:39,120 INFO L225 Difference]: With dead ends: 10285 [2024-10-31 21:56:39,120 INFO L226 Difference]: Without dead ends: 6854 [2024-10-31 21:56:39,125 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-10-31 21:56:39,125 INFO L432 NwaCegarLoop]: 169 mSDtfsCounter, 1238 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1238 SdHoareTripleChecker+Valid, 274 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-31 21:56:39,126 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1238 Valid, 274 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-31 21:56:39,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6854 states. [2024-10-31 21:56:39,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6854 to 6852. [2024-10-31 21:56:39,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6852 states, 6851 states have (on average 1.5676543570281711) internal successors, (10740), 6851 states have internal predecessors, (10740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:56:39,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6852 states to 6852 states and 10740 transitions. [2024-10-31 21:56:39,267 INFO L78 Accepts]: Start accepts. Automaton has 6852 states and 10740 transitions. Word has length 127 [2024-10-31 21:56:39,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 21:56:39,267 INFO L471 AbstractCegarLoop]: Abstraction has 6852 states and 10740 transitions. [2024-10-31 21:56:39,267 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.4) internal successors, (127), 4 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:56:39,267 INFO L276 IsEmpty]: Start isEmpty. Operand 6852 states and 10740 transitions. [2024-10-31 21:56:39,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2024-10-31 21:56:39,270 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 21:56:39,270 INFO L215 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] [2024-10-31 21:56:39,270 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-31 21:56:39,270 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 21:56:39,274 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:56:39,275 INFO L85 PathProgramCache]: Analyzing trace with hash -715246153, now seen corresponding path program 1 times [2024-10-31 21:56:39,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:56:39,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057423077] [2024-10-31 21:56:39,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:56:39,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:56:39,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:39,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:56:39,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:56:39,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057423077] [2024-10-31 21:56:39,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057423077] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:56:39,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:56:39,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-31 21:56:39,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866278293] [2024-10-31 21:56:39,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:56:39,482 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 21:56:39,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:56:39,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 21:56:39,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-31 21:56:39,483 INFO L87 Difference]: Start difference. First operand 6852 states and 10740 transitions. Second operand has 5 states, 5 states have (on average 25.6) internal successors, (128), 4 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:56:39,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 21:56:39,768 INFO L93 Difference]: Finished difference Result 13621 states and 21393 transitions. [2024-10-31 21:56:39,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-31 21:56:39,769 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.6) internal successors, (128), 4 states have internal predecessors, (128), 0 states have call successors, (0), 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 128 [2024-10-31 21:56:39,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 21:56:39,783 INFO L225 Difference]: With dead ends: 13621 [2024-10-31 21:56:39,783 INFO L226 Difference]: Without dead ends: 6852 [2024-10-31 21:56:39,790 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-10-31 21:56:39,791 INFO L432 NwaCegarLoop]: 169 mSDtfsCounter, 804 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 804 SdHoareTripleChecker+Valid, 205 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-31 21:56:39,792 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [804 Valid, 205 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-31 21:56:39,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6852 states. [2024-10-31 21:56:39,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6852 to 6852. [2024-10-31 21:56:39,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6852 states, 6851 states have (on average 1.5564151218800175) internal successors, (10663), 6851 states have internal predecessors, (10663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:56:39,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6852 states to 6852 states and 10663 transitions. [2024-10-31 21:56:39,928 INFO L78 Accepts]: Start accepts. Automaton has 6852 states and 10663 transitions. Word has length 128 [2024-10-31 21:56:39,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 21:56:39,929 INFO L471 AbstractCegarLoop]: Abstraction has 6852 states and 10663 transitions. [2024-10-31 21:56:39,929 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.6) internal successors, (128), 4 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:56:39,930 INFO L276 IsEmpty]: Start isEmpty. Operand 6852 states and 10663 transitions. [2024-10-31 21:56:39,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-10-31 21:56:39,932 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 21:56:39,932 INFO L215 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] [2024-10-31 21:56:39,933 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-31 21:56:39,933 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 21:56:39,933 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:56:39,933 INFO L85 PathProgramCache]: Analyzing trace with hash -1535233275, now seen corresponding path program 1 times [2024-10-31 21:56:39,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:56:39,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145434887] [2024-10-31 21:56:39,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:56:39,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:56:39,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:40,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:56:40,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:56:40,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145434887] [2024-10-31 21:56:40,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145434887] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:56:40,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:56:40,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-31 21:56:40,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096344865] [2024-10-31 21:56:40,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:56:40,117 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 21:56:40,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:56:40,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 21:56:40,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-31 21:56:40,118 INFO L87 Difference]: Start difference. First operand 6852 states and 10663 transitions. Second operand has 5 states, 5 states have (on average 25.8) internal successors, (129), 4 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:56:40,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 21:56:40,387 INFO L93 Difference]: Finished difference Result 13609 states and 21225 transitions. [2024-10-31 21:56:40,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-31 21:56:40,388 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.8) internal successors, (129), 4 states have internal predecessors, (129), 0 states have call successors, (0), 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 129 [2024-10-31 21:56:40,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 21:56:40,401 INFO L225 Difference]: With dead ends: 13609 [2024-10-31 21:56:40,402 INFO L226 Difference]: Without dead ends: 6852 [2024-10-31 21:56:40,409 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-10-31 21:56:40,410 INFO L432 NwaCegarLoop]: 173 mSDtfsCounter, 765 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 765 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-31 21:56:40,410 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [765 Valid, 233 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-31 21:56:40,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6852 states. [2024-10-31 21:56:40,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6852 to 6852. [2024-10-31 21:56:40,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6852 states, 6851 states have (on average 1.545175886731864) internal successors, (10586), 6851 states have internal predecessors, (10586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:56:40,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6852 states to 6852 states and 10586 transitions. [2024-10-31 21:56:40,617 INFO L78 Accepts]: Start accepts. Automaton has 6852 states and 10586 transitions. Word has length 129 [2024-10-31 21:56:40,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 21:56:40,617 INFO L471 AbstractCegarLoop]: Abstraction has 6852 states and 10586 transitions. [2024-10-31 21:56:40,618 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.8) internal successors, (129), 4 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:56:40,618 INFO L276 IsEmpty]: Start isEmpty. Operand 6852 states and 10586 transitions. [2024-10-31 21:56:40,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2024-10-31 21:56:40,621 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 21:56:40,621 INFO L215 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] [2024-10-31 21:56:40,621 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-31 21:56:40,622 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 21:56:40,622 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:56:40,622 INFO L85 PathProgramCache]: Analyzing trace with hash -746894101, now seen corresponding path program 1 times [2024-10-31 21:56:40,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:56:40,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694317599] [2024-10-31 21:56:40,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:56:40,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:56:40,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:40,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:56:40,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:56:40,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694317599] [2024-10-31 21:56:40,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694317599] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:56:40,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:56:40,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-31 21:56:40,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043249976] [2024-10-31 21:56:40,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:56:40,827 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 21:56:40,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:56:40,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 21:56:40,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-31 21:56:40,828 INFO L87 Difference]: Start difference. First operand 6852 states and 10586 transitions. Second operand has 5 states, 5 states have (on average 26.0) internal successors, (130), 4 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:56:41,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 21:56:41,073 INFO L93 Difference]: Finished difference Result 13613 states and 21076 transitions. [2024-10-31 21:56:41,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-31 21:56:41,074 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.0) internal successors, (130), 4 states have internal predecessors, (130), 0 states have call successors, (0), 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 130 [2024-10-31 21:56:41,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 21:56:41,087 INFO L225 Difference]: With dead ends: 13613 [2024-10-31 21:56:41,087 INFO L226 Difference]: Without dead ends: 6852 [2024-10-31 21:56:41,094 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-10-31 21:56:41,095 INFO L432 NwaCegarLoop]: 169 mSDtfsCounter, 769 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 769 SdHoareTripleChecker+Valid, 221 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-31 21:56:41,095 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [769 Valid, 221 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-31 21:56:41,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6852 states. [2024-10-31 21:56:41,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6852 to 6852. [2024-10-31 21:56:41,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6852 states, 6851 states have (on average 1.5339366515837105) internal successors, (10509), 6851 states have internal predecessors, (10509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:56:41,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6852 states to 6852 states and 10509 transitions. [2024-10-31 21:56:41,216 INFO L78 Accepts]: Start accepts. Automaton has 6852 states and 10509 transitions. Word has length 130 [2024-10-31 21:56:41,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 21:56:41,217 INFO L471 AbstractCegarLoop]: Abstraction has 6852 states and 10509 transitions. [2024-10-31 21:56:41,217 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.0) internal successors, (130), 4 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:56:41,217 INFO L276 IsEmpty]: Start isEmpty. Operand 6852 states and 10509 transitions. [2024-10-31 21:56:41,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2024-10-31 21:56:41,219 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 21:56:41,219 INFO L215 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] [2024-10-31 21:56:41,220 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-31 21:56:41,220 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 21:56:41,220 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:56:41,220 INFO L85 PathProgramCache]: Analyzing trace with hash -894772551, now seen corresponding path program 1 times [2024-10-31 21:56:41,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:56:41,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560506251] [2024-10-31 21:56:41,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:56:41,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:56:41,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:41,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:56:41,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:56:41,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560506251] [2024-10-31 21:56:41,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560506251] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:56:41,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:56:41,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-31 21:56:41,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98085961] [2024-10-31 21:56:41,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:56:41,418 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 21:56:41,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:56:41,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 21:56:41,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-31 21:56:41,419 INFO L87 Difference]: Start difference. First operand 6852 states and 10509 transitions. Second operand has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:56:41,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 21:56:41,681 INFO L93 Difference]: Finished difference Result 13625 states and 20936 transitions. [2024-10-31 21:56:41,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-31 21:56:41,682 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 0 states have call successors, (0), 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 131 [2024-10-31 21:56:41,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 21:56:41,695 INFO L225 Difference]: With dead ends: 13625 [2024-10-31 21:56:41,696 INFO L226 Difference]: Without dead ends: 6852 [2024-10-31 21:56:41,703 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-10-31 21:56:41,704 INFO L432 NwaCegarLoop]: 169 mSDtfsCounter, 797 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 797 SdHoareTripleChecker+Valid, 197 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-31 21:56:41,704 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [797 Valid, 197 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-31 21:56:41,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6852 states. [2024-10-31 21:56:41,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6852 to 6852. [2024-10-31 21:56:41,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6852 states, 6851 states have (on average 1.522697416435557) internal successors, (10432), 6851 states have internal predecessors, (10432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:56:41,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6852 states to 6852 states and 10432 transitions. [2024-10-31 21:56:41,825 INFO L78 Accepts]: Start accepts. Automaton has 6852 states and 10432 transitions. Word has length 131 [2024-10-31 21:56:41,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 21:56:41,826 INFO L471 AbstractCegarLoop]: Abstraction has 6852 states and 10432 transitions. [2024-10-31 21:56:41,826 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:56:41,826 INFO L276 IsEmpty]: Start isEmpty. Operand 6852 states and 10432 transitions. [2024-10-31 21:56:41,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2024-10-31 21:56:41,829 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 21:56:41,829 INFO L215 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] [2024-10-31 21:56:41,829 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-31 21:56:41,829 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 21:56:41,830 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:56:41,830 INFO L85 PathProgramCache]: Analyzing trace with hash 707180727, now seen corresponding path program 1 times [2024-10-31 21:56:41,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:56:41,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365419648] [2024-10-31 21:56:41,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:56:41,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:56:41,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:42,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:56:42,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:56:42,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365419648] [2024-10-31 21:56:42,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365419648] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:56:42,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:56:42,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-31 21:56:42,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208219221] [2024-10-31 21:56:42,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:56:42,007 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 21:56:42,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:56:42,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 21:56:42,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-31 21:56:42,008 INFO L87 Difference]: Start difference. First operand 6852 states and 10432 transitions. Second operand has 5 states, 5 states have (on average 26.4) internal successors, (132), 4 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:56:42,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 21:56:42,293 INFO L93 Difference]: Finished difference Result 13633 states and 20792 transitions. [2024-10-31 21:56:42,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-31 21:56:42,294 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.4) internal successors, (132), 4 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 132 [2024-10-31 21:56:42,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 21:56:42,308 INFO L225 Difference]: With dead ends: 13633 [2024-10-31 21:56:42,308 INFO L226 Difference]: Without dead ends: 6852 [2024-10-31 21:56:42,315 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-10-31 21:56:42,316 INFO L432 NwaCegarLoop]: 169 mSDtfsCounter, 813 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 813 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-31 21:56:42,316 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [813 Valid, 181 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-31 21:56:42,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6852 states. [2024-10-31 21:56:42,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6852 to 6852. [2024-10-31 21:56:42,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6852 states, 6851 states have (on average 1.5114581812874033) internal successors, (10355), 6851 states have internal predecessors, (10355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:56:42,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6852 states to 6852 states and 10355 transitions. [2024-10-31 21:56:42,440 INFO L78 Accepts]: Start accepts. Automaton has 6852 states and 10355 transitions. Word has length 132 [2024-10-31 21:56:42,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 21:56:42,441 INFO L471 AbstractCegarLoop]: Abstraction has 6852 states and 10355 transitions. [2024-10-31 21:56:42,441 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.4) internal successors, (132), 4 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:56:42,441 INFO L276 IsEmpty]: Start isEmpty. Operand 6852 states and 10355 transitions. [2024-10-31 21:56:42,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2024-10-31 21:56:42,444 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 21:56:42,444 INFO L215 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] [2024-10-31 21:56:42,444 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-10-31 21:56:42,445 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 21:56:42,445 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:56:42,446 INFO L85 PathProgramCache]: Analyzing trace with hash -72647047, now seen corresponding path program 1 times [2024-10-31 21:56:42,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:56:42,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710021975] [2024-10-31 21:56:42,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:56:42,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:56:42,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:42,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:56:42,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:56:42,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710021975] [2024-10-31 21:56:42,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710021975] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:56:42,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:56:42,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-31 21:56:42,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693747506] [2024-10-31 21:56:42,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:56:42,673 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 21:56:42,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:56:42,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 21:56:42,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-31 21:56:42,674 INFO L87 Difference]: Start difference. First operand 6852 states and 10355 transitions. Second operand has 5 states, 5 states have (on average 26.6) internal successors, (133), 4 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:56:42,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 21:56:42,963 INFO L93 Difference]: Finished difference Result 13629 states and 20634 transitions. [2024-10-31 21:56:42,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-31 21:56:42,964 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.6) internal successors, (133), 4 states have internal predecessors, (133), 0 states have call successors, (0), 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 133 [2024-10-31 21:56:42,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 21:56:42,978 INFO L225 Difference]: With dead ends: 13629 [2024-10-31 21:56:42,978 INFO L226 Difference]: Without dead ends: 6852 [2024-10-31 21:56:42,984 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-10-31 21:56:42,986 INFO L432 NwaCegarLoop]: 169 mSDtfsCounter, 795 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 795 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-31 21:56:42,986 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [795 Valid, 189 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-31 21:56:42,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6852 states. [2024-10-31 21:56:43,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6852 to 6852. [2024-10-31 21:56:43,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6852 states, 6851 states have (on average 1.5002189461392497) internal successors, (10278), 6851 states have internal predecessors, (10278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:56:43,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6852 states to 6852 states and 10278 transitions. [2024-10-31 21:56:43,111 INFO L78 Accepts]: Start accepts. Automaton has 6852 states and 10278 transitions. Word has length 133 [2024-10-31 21:56:43,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 21:56:43,111 INFO L471 AbstractCegarLoop]: Abstraction has 6852 states and 10278 transitions. [2024-10-31 21:56:43,112 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.6) internal successors, (133), 4 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:56:43,112 INFO L276 IsEmpty]: Start isEmpty. Operand 6852 states and 10278 transitions. [2024-10-31 21:56:43,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2024-10-31 21:56:43,114 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 21:56:43,115 INFO L215 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] [2024-10-31 21:56:43,115 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-10-31 21:56:43,116 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 21:56:43,116 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:56:43,116 INFO L85 PathProgramCache]: Analyzing trace with hash -1467277949, now seen corresponding path program 1 times [2024-10-31 21:56:43,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:56:43,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744031395] [2024-10-31 21:56:43,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:56:43,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:56:43,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:43,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:56:43,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:56:43,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744031395] [2024-10-31 21:56:43,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744031395] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:56:43,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:56:43,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-31 21:56:43,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920406846] [2024-10-31 21:56:43,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:56:43,335 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 21:56:43,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:56:43,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 21:56:43,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-31 21:56:43,336 INFO L87 Difference]: Start difference. First operand 6852 states and 10278 transitions. Second operand has 5 states, 5 states have (on average 26.8) internal successors, (134), 4 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:56:43,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 21:56:43,620 INFO L93 Difference]: Finished difference Result 13617 states and 20468 transitions. [2024-10-31 21:56:43,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-31 21:56:43,620 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.8) internal successors, (134), 4 states have internal predecessors, (134), 0 states have call successors, (0), 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 134 [2024-10-31 21:56:43,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 21:56:43,636 INFO L225 Difference]: With dead ends: 13617 [2024-10-31 21:56:43,636 INFO L226 Difference]: Without dead ends: 6852 [2024-10-31 21:56:43,643 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-10-31 21:56:43,644 INFO L432 NwaCegarLoop]: 169 mSDtfsCounter, 753 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 753 SdHoareTripleChecker+Valid, 213 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-31 21:56:43,644 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [753 Valid, 213 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-31 21:56:43,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6852 states. [2024-10-31 21:56:43,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6852 to 6852. [2024-10-31 21:56:43,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6852 states, 6851 states have (on average 1.4889797109910963) internal successors, (10201), 6851 states have internal predecessors, (10201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:56:43,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6852 states to 6852 states and 10201 transitions. [2024-10-31 21:56:43,796 INFO L78 Accepts]: Start accepts. Automaton has 6852 states and 10201 transitions. Word has length 134 [2024-10-31 21:56:43,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 21:56:43,796 INFO L471 AbstractCegarLoop]: Abstraction has 6852 states and 10201 transitions. [2024-10-31 21:56:43,797 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.8) internal successors, (134), 4 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:56:43,797 INFO L276 IsEmpty]: Start isEmpty. Operand 6852 states and 10201 transitions. [2024-10-31 21:56:43,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2024-10-31 21:56:43,799 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 21:56:43,799 INFO L215 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] [2024-10-31 21:56:43,799 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-10-31 21:56:43,799 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 21:56:43,800 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:56:43,800 INFO L85 PathProgramCache]: Analyzing trace with hash -1720431211, now seen corresponding path program 1 times [2024-10-31 21:56:43,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:56:43,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804288711] [2024-10-31 21:56:43,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:56:43,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:56:43,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:44,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:56:44,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:56:44,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804288711] [2024-10-31 21:56:44,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804288711] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:56:44,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:56:44,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-10-31 21:56:44,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916255110] [2024-10-31 21:56:44,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:56:44,692 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-31 21:56:44,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:56:44,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-31 21:56:44,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-10-31 21:56:44,693 INFO L87 Difference]: Start difference. First operand 6852 states and 10201 transitions. Second operand has 13 states, 13 states have (on average 10.384615384615385) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:56:46,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 21:56:46,076 INFO L93 Difference]: Finished difference Result 20282 states and 30197 transitions. [2024-10-31 21:56:46,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-31 21:56:46,076 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 10.384615384615385) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 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 135 [2024-10-31 21:56:46,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 21:56:46,108 INFO L225 Difference]: With dead ends: 20282 [2024-10-31 21:56:46,109 INFO L226 Difference]: Without dead ends: 13658 [2024-10-31 21:56:46,121 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=146, Invalid=454, Unknown=0, NotChecked=0, Total=600 [2024-10-31 21:56:46,122 INFO L432 NwaCegarLoop]: 164 mSDtfsCounter, 1276 mSDsluCounter, 928 mSDsCounter, 0 mSdLazyCounter, 1016 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1276 SdHoareTripleChecker+Valid, 1092 SdHoareTripleChecker+Invalid, 1024 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1016 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-10-31 21:56:46,122 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1276 Valid, 1092 Invalid, 1024 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1016 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-10-31 21:56:46,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13658 states. [2024-10-31 21:56:46,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13658 to 6852. [2024-10-31 21:56:46,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6852 states, 6851 states have (on average 1.4876660341555976) internal successors, (10192), 6851 states have internal predecessors, (10192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:56:46,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6852 states to 6852 states and 10192 transitions. [2024-10-31 21:56:46,312 INFO L78 Accepts]: Start accepts. Automaton has 6852 states and 10192 transitions. Word has length 135 [2024-10-31 21:56:46,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 21:56:46,312 INFO L471 AbstractCegarLoop]: Abstraction has 6852 states and 10192 transitions. [2024-10-31 21:56:46,312 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.384615384615385) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:56:46,313 INFO L276 IsEmpty]: Start isEmpty. Operand 6852 states and 10192 transitions. [2024-10-31 21:56:46,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2024-10-31 21:56:46,315 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 21:56:46,316 INFO L215 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] [2024-10-31 21:56:46,316 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-10-31 21:56:46,316 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 21:56:46,317 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:56:46,317 INFO L85 PathProgramCache]: Analyzing trace with hash 1294997924, now seen corresponding path program 1 times [2024-10-31 21:56:46,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:56:46,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393579002] [2024-10-31 21:56:46,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:56:46,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:56:46,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat