./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.5.2.ufo.BOUNDED-10.pals.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_51d0cd87-574a-4f44-a715-ba203e166973/bin/uautomizer-verify-4GaUIPS5ZU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d0cd87-574a-4f44-a715-ba203e166973/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_51d0cd87-574a-4f44-a715-ba203e166973/bin/uautomizer-verify-4GaUIPS5ZU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d0cd87-574a-4f44-a715-ba203e166973/bin/uautomizer-verify-4GaUIPS5ZU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.5.2.ufo.BOUNDED-10.pals.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d0cd87-574a-4f44-a715-ba203e166973/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_51d0cd87-574a-4f44-a715-ba203e166973/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 34327c45f5bb67454914f640ebf6bf1380406f6d81b1c1440537dbf8cffc8ffd --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-10-31 22:14:53,115 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-31 22:14:53,217 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d0cd87-574a-4f44-a715-ba203e166973/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-31 22:14:53,221 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-31 22:14:53,222 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-31 22:14:53,257 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-31 22:14:53,257 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-31 22:14:53,258 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-31 22:14:53,259 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-31 22:14:53,260 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-31 22:14:53,261 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-31 22:14:53,261 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-31 22:14:53,262 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-31 22:14:53,263 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-31 22:14:53,263 INFO L153 SettingsManager]: * Use SBE=true [2024-10-31 22:14:53,266 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-31 22:14:53,267 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-31 22:14:53,267 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-31 22:14:53,268 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-31 22:14:53,268 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-31 22:14:53,268 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-31 22:14:53,273 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-31 22:14:53,273 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-31 22:14:53,274 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-31 22:14:53,274 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-31 22:14:53,274 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-31 22:14:53,275 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-31 22:14:53,275 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-31 22:14:53,275 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-31 22:14:53,276 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-31 22:14:53,293 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-31 22:14:53,293 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-31 22:14:53,294 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:14:53,294 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-31 22:14:53,295 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-31 22:14:53,295 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-31 22:14:53,296 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-31 22:14:53,296 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-31 22:14:53,297 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-31 22:14:53,297 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-31 22:14:53,297 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-31 22:14:53,298 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-31 22:14:53,298 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_51d0cd87-574a-4f44-a715-ba203e166973/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d0cd87-574a-4f44-a715-ba203e166973/bin/uautomizer-verify-4GaUIPS5ZU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 34327c45f5bb67454914f640ebf6bf1380406f6d81b1c1440537dbf8cffc8ffd [2024-10-31 22:14:53,573 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-31 22:14:53,604 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-31 22:14:53,607 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-31 22:14:53,609 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-31 22:14:53,610 INFO L274 PluginConnector]: CDTParser initialized [2024-10-31 22:14:53,611 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d0cd87-574a-4f44-a715-ba203e166973/bin/uautomizer-verify-4GaUIPS5ZU/../../sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.5.2.ufo.BOUNDED-10.pals.c Unable to find full path for "g++" [2024-10-31 22:14:55,769 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-31 22:14:56,110 INFO L384 CDTParser]: Found 1 translation units. [2024-10-31 22:14:56,111 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d0cd87-574a-4f44-a715-ba203e166973/sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.5.2.ufo.BOUNDED-10.pals.c [2024-10-31 22:14:56,131 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d0cd87-574a-4f44-a715-ba203e166973/bin/uautomizer-verify-4GaUIPS5ZU/data/885446cf3/94e4dd90929144979f1d5766df3d76b8/FLAGff2649e87 [2024-10-31 22:14:56,149 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d0cd87-574a-4f44-a715-ba203e166973/bin/uautomizer-verify-4GaUIPS5ZU/data/885446cf3/94e4dd90929144979f1d5766df3d76b8 [2024-10-31 22:14:56,152 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-31 22:14:56,154 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-31 22:14:56,155 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-31 22:14:56,155 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-31 22:14:56,163 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-31 22:14:56,164 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:14:56" (1/1) ... [2024-10-31 22:14:56,165 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e7f2c7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:14:56, skipping insertion in model container [2024-10-31 22:14:56,165 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:14:56" (1/1) ... [2024-10-31 22:14:56,246 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-31 22:14:56,812 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_51d0cd87-574a-4f44-a715-ba203e166973/sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.5.2.ufo.BOUNDED-10.pals.c[65471,65484] [2024-10-31 22:14:56,821 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:14:56,836 INFO L200 MainTranslator]: Completed pre-run [2024-10-31 22:14:57,015 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_51d0cd87-574a-4f44-a715-ba203e166973/sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.5.2.ufo.BOUNDED-10.pals.c[65471,65484] [2024-10-31 22:14:57,016 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:14:57,056 INFO L204 MainTranslator]: Completed translation [2024-10-31 22:14:57,057 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:14:57 WrapperNode [2024-10-31 22:14:57,057 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-31 22:14:57,059 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-31 22:14:57,059 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-31 22:14:57,060 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-31 22:14:57,070 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:14:57" (1/1) ... [2024-10-31 22:14:57,099 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:14:57" (1/1) ... [2024-10-31 22:14:57,199 INFO L138 Inliner]: procedures = 24, calls = 16, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 2140 [2024-10-31 22:14:57,199 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-31 22:14:57,201 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-31 22:14:57,201 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-31 22:14:57,201 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-31 22:14:57,215 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:14:57" (1/1) ... [2024-10-31 22:14:57,215 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:14:57" (1/1) ... [2024-10-31 22:14:57,225 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:14:57" (1/1) ... [2024-10-31 22:14:57,273 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 22:14:57,273 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:14:57" (1/1) ... [2024-10-31 22:14:57,274 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:14:57" (1/1) ... [2024-10-31 22:14:57,297 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:14:57" (1/1) ... [2024-10-31 22:14:57,377 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:14:57" (1/1) ... [2024-10-31 22:14:57,391 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:14:57" (1/1) ... [2024-10-31 22:14:57,404 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:14:57" (1/1) ... [2024-10-31 22:14:57,429 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-31 22:14:57,430 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-31 22:14:57,430 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-31 22:14:57,431 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-31 22:14:57,431 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:14:57" (1/1) ... [2024-10-31 22:14:57,497 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:14:57,510 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d0cd87-574a-4f44-a715-ba203e166973/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:14:57,527 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d0cd87-574a-4f44-a715-ba203e166973/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-31 22:14:57,530 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d0cd87-574a-4f44-a715-ba203e166973/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-31 22:14:57,564 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-31 22:14:57,564 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-31 22:14:57,565 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-31 22:14:57,565 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-31 22:14:57,754 INFO L238 CfgBuilder]: Building ICFG [2024-10-31 22:14:57,756 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-31 22:15:00,322 INFO L? ?]: Removed 240 outVars from TransFormulas that were not future-live. [2024-10-31 22:15:00,323 INFO L287 CfgBuilder]: Performing block encoding [2024-10-31 22:15:00,357 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-31 22:15:00,357 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-31 22:15:00,358 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:15:00 BoogieIcfgContainer [2024-10-31 22:15:00,358 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-31 22:15:00,360 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-31 22:15:00,360 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-31 22:15:00,364 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-31 22:15:00,364 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.10 10:14:56" (1/3) ... [2024-10-31 22:15:00,365 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e85edea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:15:00, skipping insertion in model container [2024-10-31 22:15:00,365 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:14:57" (2/3) ... [2024-10-31 22:15:00,365 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e85edea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:15:00, skipping insertion in model container [2024-10-31 22:15:00,366 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:15:00" (3/3) ... [2024-10-31 22:15:00,369 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.5.2.ufo.BOUNDED-10.pals.c [2024-10-31 22:15:00,388 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-31 22:15:00,388 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-31 22:15:00,509 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 22:15:00,516 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;@302b5b2e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 22:15:00,516 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-31 22:15:00,523 INFO L276 IsEmpty]: Start isEmpty. Operand has 696 states, 694 states have (on average 1.8703170028818443) internal successors, (1298), 695 states have internal predecessors, (1298), 0 states have call successors, (0), 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 22:15:00,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2024-10-31 22:15:00,545 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:15:00,546 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:15:00,547 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:15:00,552 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:15:00,552 INFO L85 PathProgramCache]: Analyzing trace with hash 46633421, now seen corresponding path program 1 times [2024-10-31 22:15:00,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:15:00,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093190110] [2024-10-31 22:15:00,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:15:00,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:15:01,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:15:01,362 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 22:15:01,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:15:01,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093190110] [2024-10-31 22:15:01,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093190110] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:15:01,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:15:01,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:15:01,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256988416] [2024-10-31 22:15:01,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:15:01,374 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-31 22:15:01,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:15:01,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-31 22:15:01,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-31 22:15:01,407 INFO L87 Difference]: Start difference. First operand has 696 states, 694 states have (on average 1.8703170028818443) internal successors, (1298), 695 states have internal predecessors, (1298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 76.5) internal successors, (153), 2 states have internal predecessors, (153), 0 states have call successors, (0), 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 22:15:01,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:15:01,503 INFO L93 Difference]: Finished difference Result 842 states and 1560 transitions. [2024-10-31 22:15:01,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-31 22:15:01,507 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 76.5) internal successors, (153), 2 states have internal predecessors, (153), 0 states have call successors, (0), 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 153 [2024-10-31 22:15:01,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:15:01,534 INFO L225 Difference]: With dead ends: 842 [2024-10-31 22:15:01,534 INFO L226 Difference]: Without dead ends: 692 [2024-10-31 22:15:01,537 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-31 22:15:01,541 INFO L432 NwaCegarLoop]: 1295 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1295 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-31 22:15:01,542 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1295 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-31 22:15:01,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 692 states. [2024-10-31 22:15:01,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 692 to 692. [2024-10-31 22:15:01,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 692 states, 691 states have (on average 1.8683068017366136) internal successors, (1291), 691 states have internal predecessors, (1291), 0 states have call successors, (0), 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 22:15:01,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 692 states to 692 states and 1291 transitions. [2024-10-31 22:15:01,622 INFO L78 Accepts]: Start accepts. Automaton has 692 states and 1291 transitions. Word has length 153 [2024-10-31 22:15:01,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:15:01,623 INFO L471 AbstractCegarLoop]: Abstraction has 692 states and 1291 transitions. [2024-10-31 22:15:01,623 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 76.5) internal successors, (153), 2 states have internal predecessors, (153), 0 states have call successors, (0), 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 22:15:01,624 INFO L276 IsEmpty]: Start isEmpty. Operand 692 states and 1291 transitions. [2024-10-31 22:15:01,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2024-10-31 22:15:01,631 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:15:01,631 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:15:01,632 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-31 22:15:01,632 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:15:01,633 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:15:01,633 INFO L85 PathProgramCache]: Analyzing trace with hash -462839669, now seen corresponding path program 1 times [2024-10-31 22:15:01,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:15:01,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685331304] [2024-10-31 22:15:01,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:15:01,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:15:01,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:15:02,392 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 22:15:02,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:15:02,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685331304] [2024-10-31 22:15:02,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685331304] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:15:02,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:15:02,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-31 22:15:02,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808789359] [2024-10-31 22:15:02,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:15:02,398 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 22:15:02,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:15:02,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 22:15:02,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:15:02,400 INFO L87 Difference]: Start difference. First operand 692 states and 1291 transitions. Second operand has 5 states, 5 states have (on average 30.6) internal successors, (153), 5 states have internal predecessors, (153), 0 states have call successors, (0), 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 22:15:02,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:15:02,578 INFO L93 Difference]: Finished difference Result 837 states and 1550 transitions. [2024-10-31 22:15:02,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-31 22:15:02,579 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.6) internal successors, (153), 5 states have internal predecessors, (153), 0 states have call successors, (0), 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 153 [2024-10-31 22:15:02,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:15:02,585 INFO L225 Difference]: With dead ends: 837 [2024-10-31 22:15:02,587 INFO L226 Difference]: Without dead ends: 692 [2024-10-31 22:15:02,588 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:15:02,590 INFO L432 NwaCegarLoop]: 1289 mSDtfsCounter, 0 mSDsluCounter, 3797 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 5086 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-31 22:15:02,591 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 5086 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-31 22:15:02,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 692 states. [2024-10-31 22:15:02,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 692 to 692. [2024-10-31 22:15:02,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 692 states, 691 states have (on average 1.7742402315484804) internal successors, (1226), 691 states have internal predecessors, (1226), 0 states have call successors, (0), 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 22:15:02,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 692 states to 692 states and 1226 transitions. [2024-10-31 22:15:02,639 INFO L78 Accepts]: Start accepts. Automaton has 692 states and 1226 transitions. Word has length 153 [2024-10-31 22:15:02,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:15:02,639 INFO L471 AbstractCegarLoop]: Abstraction has 692 states and 1226 transitions. [2024-10-31 22:15:02,640 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.6) internal successors, (153), 5 states have internal predecessors, (153), 0 states have call successors, (0), 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 22:15:02,640 INFO L276 IsEmpty]: Start isEmpty. Operand 692 states and 1226 transitions. [2024-10-31 22:15:02,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2024-10-31 22:15:02,652 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:15:02,653 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:15:02,653 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-31 22:15:02,653 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:15:02,654 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:15:02,654 INFO L85 PathProgramCache]: Analyzing trace with hash 2032916201, now seen corresponding path program 1 times [2024-10-31 22:15:02,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:15:02,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266176026] [2024-10-31 22:15:02,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:15:02,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:15:02,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:15:03,179 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 22:15:03,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:15:03,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266176026] [2024-10-31 22:15:03,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266176026] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:15:03,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:15:03,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:15:03,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092006096] [2024-10-31 22:15:03,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:15:03,185 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:15:03,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:15:03,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:15:03,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:15:03,190 INFO L87 Difference]: Start difference. First operand 692 states and 1226 transitions. Second operand has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 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 22:15:03,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:15:03,278 INFO L93 Difference]: Finished difference Result 960 states and 1710 transitions. [2024-10-31 22:15:03,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:15:03,279 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 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 217 [2024-10-31 22:15:03,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:15:03,283 INFO L225 Difference]: With dead ends: 960 [2024-10-31 22:15:03,283 INFO L226 Difference]: Without dead ends: 819 [2024-10-31 22:15:03,284 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 22:15:03,285 INFO L432 NwaCegarLoop]: 1225 mSDtfsCounter, 221 mSDsluCounter, 1157 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 2382 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-31 22:15:03,286 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [221 Valid, 2382 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-31 22:15:03,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 819 states. [2024-10-31 22:15:03,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 819 to 817. [2024-10-31 22:15:03,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 817 states, 816 states have (on average 1.775735294117647) internal successors, (1449), 816 states have internal predecessors, (1449), 0 states have call successors, (0), 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 22:15:03,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 817 states to 817 states and 1449 transitions. [2024-10-31 22:15:03,307 INFO L78 Accepts]: Start accepts. Automaton has 817 states and 1449 transitions. Word has length 217 [2024-10-31 22:15:03,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:15:03,308 INFO L471 AbstractCegarLoop]: Abstraction has 817 states and 1449 transitions. [2024-10-31 22:15:03,309 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 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 22:15:03,309 INFO L276 IsEmpty]: Start isEmpty. Operand 817 states and 1449 transitions. [2024-10-31 22:15:03,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2024-10-31 22:15:03,315 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:15:03,316 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:15:03,316 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-31 22:15:03,316 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:15:03,317 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:15:03,318 INFO L85 PathProgramCache]: Analyzing trace with hash -1022770877, now seen corresponding path program 1 times [2024-10-31 22:15:03,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:15:03,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909477339] [2024-10-31 22:15:03,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:15:03,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:15:03,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:15:03,738 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 22:15:03,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:15:03,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909477339] [2024-10-31 22:15:03,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909477339] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:15:03,740 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:15:03,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:15:03,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618437825] [2024-10-31 22:15:03,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:15:03,742 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:15:03,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:15:03,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:15:03,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:15:03,745 INFO L87 Difference]: Start difference. First operand 817 states and 1449 transitions. Second operand has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 states have internal predecessors, (221), 0 states have call successors, (0), 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 22:15:03,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:15:03,804 INFO L93 Difference]: Finished difference Result 1325 states and 2361 transitions. [2024-10-31 22:15:03,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:15:03,805 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 states have internal predecessors, (221), 0 states have call successors, (0), 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 221 [2024-10-31 22:15:03,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:15:03,811 INFO L225 Difference]: With dead ends: 1325 [2024-10-31 22:15:03,811 INFO L226 Difference]: Without dead ends: 1059 [2024-10-31 22:15:03,814 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 22:15:03,818 INFO L432 NwaCegarLoop]: 1224 mSDtfsCounter, 221 mSDsluCounter, 1166 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 2390 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-31 22:15:03,819 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [221 Valid, 2390 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-31 22:15:03,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1059 states. [2024-10-31 22:15:03,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1059 to 1057. [2024-10-31 22:15:03,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1057 states, 1056 states have (on average 1.7803030303030303) internal successors, (1880), 1056 states have internal predecessors, (1880), 0 states have call successors, (0), 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 22:15:03,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1057 states to 1057 states and 1880 transitions. [2024-10-31 22:15:03,855 INFO L78 Accepts]: Start accepts. Automaton has 1057 states and 1880 transitions. Word has length 221 [2024-10-31 22:15:03,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:15:03,857 INFO L471 AbstractCegarLoop]: Abstraction has 1057 states and 1880 transitions. [2024-10-31 22:15:03,858 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 states have internal predecessors, (221), 0 states have call successors, (0), 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 22:15:03,858 INFO L276 IsEmpty]: Start isEmpty. Operand 1057 states and 1880 transitions. [2024-10-31 22:15:03,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2024-10-31 22:15:03,864 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:15:03,864 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:15:03,865 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-31 22:15:03,865 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:15:03,865 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:15:03,866 INFO L85 PathProgramCache]: Analyzing trace with hash 1113466973, now seen corresponding path program 1 times [2024-10-31 22:15:03,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:15:03,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363161705] [2024-10-31 22:15:03,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:15:03,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:15:03,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:15:04,235 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 22:15:04,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:15:04,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363161705] [2024-10-31 22:15:04,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363161705] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:15:04,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:15:04,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:15:04,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021474535] [2024-10-31 22:15:04,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:15:04,238 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:15:04,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:15:04,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:15:04,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:15:04,239 INFO L87 Difference]: Start difference. First operand 1057 states and 1880 transitions. Second operand has 3 states, 3 states have (on average 75.0) internal successors, (225), 3 states have internal predecessors, (225), 0 states have call successors, (0), 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 22:15:04,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:15:04,310 INFO L93 Difference]: Finished difference Result 2021 states and 3610 transitions. [2024-10-31 22:15:04,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:15:04,310 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 75.0) internal successors, (225), 3 states have internal predecessors, (225), 0 states have call successors, (0), 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 225 [2024-10-31 22:15:04,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:15:04,317 INFO L225 Difference]: With dead ends: 2021 [2024-10-31 22:15:04,317 INFO L226 Difference]: Without dead ends: 1515 [2024-10-31 22:15:04,318 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 22:15:04,319 INFO L432 NwaCegarLoop]: 1224 mSDtfsCounter, 213 mSDsluCounter, 1167 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 2391 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-31 22:15:04,320 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [213 Valid, 2391 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-31 22:15:04,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1515 states. [2024-10-31 22:15:04,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1515 to 1513. [2024-10-31 22:15:04,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1513 states, 1512 states have (on average 1.783068783068783) internal successors, (2696), 1512 states have internal predecessors, (2696), 0 states have call successors, (0), 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 22:15:04,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1513 states to 1513 states and 2696 transitions. [2024-10-31 22:15:04,391 INFO L78 Accepts]: Start accepts. Automaton has 1513 states and 2696 transitions. Word has length 225 [2024-10-31 22:15:04,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:15:04,392 INFO L471 AbstractCegarLoop]: Abstraction has 1513 states and 2696 transitions. [2024-10-31 22:15:04,392 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 75.0) internal successors, (225), 3 states have internal predecessors, (225), 0 states have call successors, (0), 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 22:15:04,392 INFO L276 IsEmpty]: Start isEmpty. Operand 1513 states and 2696 transitions. [2024-10-31 22:15:04,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2024-10-31 22:15:04,397 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:15:04,398 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:15:04,398 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-31 22:15:04,398 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:15:04,399 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:15:04,399 INFO L85 PathProgramCache]: Analyzing trace with hash -1539339209, now seen corresponding path program 1 times [2024-10-31 22:15:04,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:15:04,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885612434] [2024-10-31 22:15:04,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:15:04,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:15:04,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:15:04,756 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 22:15:04,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:15:04,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885612434] [2024-10-31 22:15:04,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885612434] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:15:04,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:15:04,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:15:04,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634862509] [2024-10-31 22:15:04,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:15:04,759 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:15:04,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:15:04,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:15:04,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:15:04,761 INFO L87 Difference]: Start difference. First operand 1513 states and 2696 transitions. Second operand has 3 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 states have internal predecessors, (229), 0 states have call successors, (0), 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 22:15:04,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:15:04,832 INFO L93 Difference]: Finished difference Result 3341 states and 5970 transitions. [2024-10-31 22:15:04,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:15:04,834 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 states have internal predecessors, (229), 0 states have call successors, (0), 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 229 [2024-10-31 22:15:04,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:15:04,846 INFO L225 Difference]: With dead ends: 3341 [2024-10-31 22:15:04,847 INFO L226 Difference]: Without dead ends: 2379 [2024-10-31 22:15:04,848 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 22:15:04,850 INFO L432 NwaCegarLoop]: 1224 mSDtfsCounter, 205 mSDsluCounter, 1168 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 2392 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-31 22:15:04,852 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [205 Valid, 2392 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-31 22:15:04,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2379 states. [2024-10-31 22:15:04,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2379 to 2377. [2024-10-31 22:15:04,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2377 states, 2376 states have (on average 1.7828282828282829) internal successors, (4236), 2376 states have internal predecessors, (4236), 0 states have call successors, (0), 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 22:15:04,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2377 states to 2377 states and 4236 transitions. [2024-10-31 22:15:04,919 INFO L78 Accepts]: Start accepts. Automaton has 2377 states and 4236 transitions. Word has length 229 [2024-10-31 22:15:04,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:15:04,919 INFO L471 AbstractCegarLoop]: Abstraction has 2377 states and 4236 transitions. [2024-10-31 22:15:04,920 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 states have internal predecessors, (229), 0 states have call successors, (0), 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 22:15:04,920 INFO L276 IsEmpty]: Start isEmpty. Operand 2377 states and 4236 transitions. [2024-10-31 22:15:04,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2024-10-31 22:15:04,927 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:15:04,927 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:15:04,928 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-31 22:15:04,928 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:15:04,928 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:15:04,928 INFO L85 PathProgramCache]: Analyzing trace with hash 1794403537, now seen corresponding path program 1 times [2024-10-31 22:15:04,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:15:04,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023156751] [2024-10-31 22:15:04,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:15:04,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:15:05,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:15:05,272 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 22:15:05,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:15:05,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023156751] [2024-10-31 22:15:05,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023156751] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:15:05,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:15:05,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:15:05,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917742398] [2024-10-31 22:15:05,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:15:05,274 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:15:05,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:15:05,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:15:05,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:15:05,276 INFO L87 Difference]: Start difference. First operand 2377 states and 4236 transitions. Second operand has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 0 states have call successors, (0), 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 22:15:05,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:15:05,362 INFO L93 Difference]: Finished difference Result 5837 states and 10414 transitions. [2024-10-31 22:15:05,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:15:05,362 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 0 states have call successors, (0), 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 233 [2024-10-31 22:15:05,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:15:05,377 INFO L225 Difference]: With dead ends: 5837 [2024-10-31 22:15:05,377 INFO L226 Difference]: Without dead ends: 4011 [2024-10-31 22:15:05,380 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 22:15:05,380 INFO L432 NwaCegarLoop]: 1224 mSDtfsCounter, 197 mSDsluCounter, 1169 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 2393 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-31 22:15:05,381 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [197 Valid, 2393 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-31 22:15:05,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4011 states. [2024-10-31 22:15:05,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4011 to 4009. [2024-10-31 22:15:05,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4009 states, 4008 states have (on average 1.7794411177644711) internal successors, (7132), 4008 states have internal predecessors, (7132), 0 states have call successors, (0), 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 22:15:05,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4009 states to 4009 states and 7132 transitions. [2024-10-31 22:15:05,492 INFO L78 Accepts]: Start accepts. Automaton has 4009 states and 7132 transitions. Word has length 233 [2024-10-31 22:15:05,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:15:05,493 INFO L471 AbstractCegarLoop]: Abstraction has 4009 states and 7132 transitions. [2024-10-31 22:15:05,493 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 0 states have call successors, (0), 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 22:15:05,493 INFO L276 IsEmpty]: Start isEmpty. Operand 4009 states and 7132 transitions. [2024-10-31 22:15:05,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2024-10-31 22:15:05,498 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:15:05,499 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:15:05,499 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-31 22:15:05,499 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:15:05,499 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:15:05,500 INFO L85 PathProgramCache]: Analyzing trace with hash -1913435605, now seen corresponding path program 1 times [2024-10-31 22:15:05,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:15:05,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994828184] [2024-10-31 22:15:05,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:15:05,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:15:05,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:15:06,117 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 22:15:06,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:15:06,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994828184] [2024-10-31 22:15:06,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994828184] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:15:06,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:15:06,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-31 22:15:06,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473251362] [2024-10-31 22:15:06,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:15:06,122 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-31 22:15:06,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:15:06,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-31 22:15:06,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-31 22:15:06,124 INFO L87 Difference]: Start difference. First operand 4009 states and 7132 transitions. Second operand has 7 states, 7 states have (on average 33.857142857142854) internal successors, (237), 7 states have internal predecessors, (237), 0 states have call successors, (0), 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 22:15:07,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:15:07,021 INFO L93 Difference]: Finished difference Result 23805 states and 42646 transitions. [2024-10-31 22:15:07,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-31 22:15:07,022 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 33.857142857142854) internal successors, (237), 7 states have internal predecessors, (237), 0 states have call successors, (0), 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 237 [2024-10-31 22:15:07,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:15:07,112 INFO L225 Difference]: With dead ends: 23805 [2024-10-31 22:15:07,112 INFO L226 Difference]: Without dead ends: 20347 [2024-10-31 22:15:07,120 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2024-10-31 22:15:07,122 INFO L432 NwaCegarLoop]: 1221 mSDtfsCounter, 2628 mSDsluCounter, 10211 mSDsCounter, 0 mSdLazyCounter, 348 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2628 SdHoareTripleChecker+Valid, 11432 SdHoareTripleChecker+Invalid, 356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-31 22:15:07,122 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2628 Valid, 11432 Invalid, 356 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [8 Valid, 348 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-31 22:15:07,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20347 states. [2024-10-31 22:15:07,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20347 to 7328. [2024-10-31 22:15:07,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7328 states, 7327 states have (on average 1.7794458850825714) internal successors, (13038), 7327 states have internal predecessors, (13038), 0 states have call successors, (0), 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 22:15:07,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7328 states to 7328 states and 13038 transitions. [2024-10-31 22:15:07,529 INFO L78 Accepts]: Start accepts. Automaton has 7328 states and 13038 transitions. Word has length 237 [2024-10-31 22:15:07,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:15:07,530 INFO L471 AbstractCegarLoop]: Abstraction has 7328 states and 13038 transitions. [2024-10-31 22:15:07,530 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 33.857142857142854) internal successors, (237), 7 states have internal predecessors, (237), 0 states have call successors, (0), 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 22:15:07,530 INFO L276 IsEmpty]: Start isEmpty. Operand 7328 states and 13038 transitions. [2024-10-31 22:15:07,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2024-10-31 22:15:07,537 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:15:07,537 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:15:07,538 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-31 22:15:07,538 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:15:07,538 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:15:07,539 INFO L85 PathProgramCache]: Analyzing trace with hash -1453341025, now seen corresponding path program 1 times [2024-10-31 22:15:07,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:15:07,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480582847] [2024-10-31 22:15:07,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:15:07,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:15:07,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:15:07,927 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 22:15:07,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:15:07,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480582847] [2024-10-31 22:15:07,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480582847] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:15:07,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:15:07,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-31 22:15:07,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728070687] [2024-10-31 22:15:07,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:15:07,929 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:15:07,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:15:07,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:15:07,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:15:07,931 INFO L87 Difference]: Start difference. First operand 7328 states and 13038 transitions. Second operand has 4 states, 4 states have (on average 59.5) internal successors, (238), 4 states have internal predecessors, (238), 0 states have call successors, (0), 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 22:15:08,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:15:08,214 INFO L93 Difference]: Finished difference Result 21287 states and 38031 transitions. [2024-10-31 22:15:08,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 22:15:08,214 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 59.5) internal successors, (238), 4 states have internal predecessors, (238), 0 states have call successors, (0), 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 238 [2024-10-31 22:15:08,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:15:08,245 INFO L225 Difference]: With dead ends: 21287 [2024-10-31 22:15:08,245 INFO L226 Difference]: Without dead ends: 14510 [2024-10-31 22:15:08,255 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:15:08,256 INFO L432 NwaCegarLoop]: 1224 mSDtfsCounter, 736 mSDsluCounter, 2622 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 736 SdHoareTripleChecker+Valid, 3846 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-31 22:15:08,256 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [736 Valid, 3846 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-31 22:15:08,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14510 states. [2024-10-31 22:15:08,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14510 to 10886. [2024-10-31 22:15:08,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10886 states, 10885 states have (on average 1.780064308681672) internal successors, (19376), 10885 states have internal predecessors, (19376), 0 states have call successors, (0), 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 22:15:08,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10886 states to 10886 states and 19376 transitions. [2024-10-31 22:15:08,635 INFO L78 Accepts]: Start accepts. Automaton has 10886 states and 19376 transitions. Word has length 238 [2024-10-31 22:15:08,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:15:08,636 INFO L471 AbstractCegarLoop]: Abstraction has 10886 states and 19376 transitions. [2024-10-31 22:15:08,637 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 59.5) internal successors, (238), 4 states have internal predecessors, (238), 0 states have call successors, (0), 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 22:15:08,637 INFO L276 IsEmpty]: Start isEmpty. Operand 10886 states and 19376 transitions. [2024-10-31 22:15:08,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2024-10-31 22:15:08,645 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:15:08,646 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:15:08,646 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-31 22:15:08,646 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:15:08,647 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:15:08,647 INFO L85 PathProgramCache]: Analyzing trace with hash 1866481297, now seen corresponding path program 1 times [2024-10-31 22:15:08,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:15:08,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338278680] [2024-10-31 22:15:08,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:15:08,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:15:08,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:15:08,961 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 22:15:08,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:15:08,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338278680] [2024-10-31 22:15:08,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338278680] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:15:08,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:15:08,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:15:08,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009542156] [2024-10-31 22:15:08,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:15:08,963 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:15:08,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:15:08,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:15:08,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:15:08,964 INFO L87 Difference]: Start difference. First operand 10886 states and 19376 transitions. Second operand has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 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 22:15:09,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:15:09,298 INFO L93 Difference]: Finished difference Result 24013 states and 42846 transitions. [2024-10-31 22:15:09,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:15:09,298 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 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 239 [2024-10-31 22:15:09,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:15:09,335 INFO L225 Difference]: With dead ends: 24013 [2024-10-31 22:15:09,335 INFO L226 Difference]: Without dead ends: 16773 [2024-10-31 22:15:09,345 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 22:15:09,346 INFO L432 NwaCegarLoop]: 1427 mSDtfsCounter, 230 mSDsluCounter, 1188 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 230 SdHoareTripleChecker+Valid, 2615 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-31 22:15:09,347 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [230 Valid, 2615 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-31 22:15:09,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16773 states. [2024-10-31 22:15:09,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16773 to 16771. [2024-10-31 22:15:09,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16771 states, 16770 states have (on average 1.7762075134168158) internal successors, (29787), 16770 states have internal predecessors, (29787), 0 states have call successors, (0), 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 22:15:09,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16771 states to 16771 states and 29787 transitions. [2024-10-31 22:15:09,853 INFO L78 Accepts]: Start accepts. Automaton has 16771 states and 29787 transitions. Word has length 239 [2024-10-31 22:15:09,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:15:09,854 INFO L471 AbstractCegarLoop]: Abstraction has 16771 states and 29787 transitions. [2024-10-31 22:15:09,854 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 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 22:15:09,854 INFO L276 IsEmpty]: Start isEmpty. Operand 16771 states and 29787 transitions. [2024-10-31 22:15:09,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2024-10-31 22:15:09,860 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:15:09,860 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:15:09,860 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-31 22:15:09,860 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:15:09,861 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:15:09,861 INFO L85 PathProgramCache]: Analyzing trace with hash 1951768689, now seen corresponding path program 1 times [2024-10-31 22:15:09,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:15:09,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404523495] [2024-10-31 22:15:09,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:15:09,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:15:09,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:15:10,096 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 22:15:10,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:15:10,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404523495] [2024-10-31 22:15:10,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404523495] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:15:10,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:15:10,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:15:10,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720676133] [2024-10-31 22:15:10,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:15:10,098 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:15:10,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:15:10,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:15:10,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:15:10,099 INFO L87 Difference]: Start difference. First operand 16771 states and 29787 transitions. Second operand has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 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 22:15:10,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:15:10,487 INFO L93 Difference]: Finished difference Result 32435 states and 57586 transitions. [2024-10-31 22:15:10,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:15:10,487 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 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 239 [2024-10-31 22:15:10,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:15:10,532 INFO L225 Difference]: With dead ends: 32435 [2024-10-31 22:15:10,532 INFO L226 Difference]: Without dead ends: 23729 [2024-10-31 22:15:10,544 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 22:15:10,545 INFO L432 NwaCegarLoop]: 1416 mSDtfsCounter, 222 mSDsluCounter, 1189 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 2605 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-31 22:15:10,545 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [222 Valid, 2605 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-31 22:15:10,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23729 states. [2024-10-31 22:15:11,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23729 to 23727. [2024-10-31 22:15:11,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23727 states, 23726 states have (on average 1.7691561999494225) internal successors, (41975), 23726 states have internal predecessors, (41975), 0 states have call successors, (0), 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 22:15:11,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23727 states to 23727 states and 41975 transitions. [2024-10-31 22:15:11,096 INFO L78 Accepts]: Start accepts. Automaton has 23727 states and 41975 transitions. Word has length 239 [2024-10-31 22:15:11,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:15:11,096 INFO L471 AbstractCegarLoop]: Abstraction has 23727 states and 41975 transitions. [2024-10-31 22:15:11,097 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 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 22:15:11,097 INFO L276 IsEmpty]: Start isEmpty. Operand 23727 states and 41975 transitions. [2024-10-31 22:15:11,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2024-10-31 22:15:11,101 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:15:11,101 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:15:11,101 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-31 22:15:11,101 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:15:11,102 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:15:11,102 INFO L85 PathProgramCache]: Analyzing trace with hash 844816977, now seen corresponding path program 1 times [2024-10-31 22:15:11,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:15:11,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517462095] [2024-10-31 22:15:11,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:15:11,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:15:11,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:15:11,394 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 22:15:11,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:15:11,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517462095] [2024-10-31 22:15:11,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517462095] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:15:11,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:15:11,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:15:11,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889128965] [2024-10-31 22:15:11,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:15:11,396 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:15:11,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:15:11,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:15:11,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:15:11,398 INFO L87 Difference]: Start difference. First operand 23727 states and 41975 transitions. Second operand has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 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 22:15:11,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:15:11,918 INFO L93 Difference]: Finished difference Result 45935 states and 81222 transitions. [2024-10-31 22:15:11,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:15:11,918 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 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 239 [2024-10-31 22:15:11,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:15:11,985 INFO L225 Difference]: With dead ends: 45935 [2024-10-31 22:15:11,985 INFO L226 Difference]: Without dead ends: 33517 [2024-10-31 22:15:12,005 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 22:15:12,006 INFO L432 NwaCegarLoop]: 1396 mSDtfsCounter, 214 mSDsluCounter, 1190 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 2586 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-31 22:15:12,006 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [214 Valid, 2586 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-31 22:15:12,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33517 states. [2024-10-31 22:15:12,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33517 to 33515. [2024-10-31 22:15:12,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33515 states, 33514 states have (on average 1.761263949394283) internal successors, (59027), 33514 states have internal predecessors, (59027), 0 states have call successors, (0), 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 22:15:12,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33515 states to 33515 states and 59027 transitions. [2024-10-31 22:15:12,999 INFO L78 Accepts]: Start accepts. Automaton has 33515 states and 59027 transitions. Word has length 239 [2024-10-31 22:15:12,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:15:12,999 INFO L471 AbstractCegarLoop]: Abstraction has 33515 states and 59027 transitions. [2024-10-31 22:15:13,000 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 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 22:15:13,000 INFO L276 IsEmpty]: Start isEmpty. Operand 33515 states and 59027 transitions. [2024-10-31 22:15:13,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2024-10-31 22:15:13,005 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:15:13,005 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:15:13,005 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-31 22:15:13,006 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:15:13,006 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:15:13,006 INFO L85 PathProgramCache]: Analyzing trace with hash 120587313, now seen corresponding path program 1 times [2024-10-31 22:15:13,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:15:13,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654232574] [2024-10-31 22:15:13,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:15:13,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:15:13,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:15:13,329 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 22:15:13,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:15:13,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654232574] [2024-10-31 22:15:13,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654232574] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:15:13,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:15:13,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:15:13,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757619208] [2024-10-31 22:15:13,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:15:13,332 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:15:13,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:15:13,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:15:13,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:15:13,333 INFO L87 Difference]: Start difference. First operand 33515 states and 59027 transitions. Second operand has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 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 22:15:14,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:15:14,236 INFO L93 Difference]: Finished difference Result 64899 states and 114226 transitions. [2024-10-31 22:15:14,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:15:14,237 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 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 239 [2024-10-31 22:15:14,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:15:14,450 INFO L225 Difference]: With dead ends: 64899 [2024-10-31 22:15:14,450 INFO L226 Difference]: Without dead ends: 47233 [2024-10-31 22:15:14,492 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 22:15:14,492 INFO L432 NwaCegarLoop]: 1376 mSDtfsCounter, 206 mSDsluCounter, 1191 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 2567 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-31 22:15:14,493 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [206 Valid, 2567 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-31 22:15:14,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47233 states. [2024-10-31 22:15:15,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47233 to 47231. [2024-10-31 22:15:15,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47231 states, 47230 states have (on average 1.7523819606182511) internal successors, (82765), 47230 states have internal predecessors, (82765), 0 states have call successors, (0), 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 22:15:15,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47231 states to 47231 states and 82765 transitions. [2024-10-31 22:15:15,777 INFO L78 Accepts]: Start accepts. Automaton has 47231 states and 82765 transitions. Word has length 239 [2024-10-31 22:15:15,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:15:15,778 INFO L471 AbstractCegarLoop]: Abstraction has 47231 states and 82765 transitions. [2024-10-31 22:15:15,778 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 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 22:15:15,779 INFO L276 IsEmpty]: Start isEmpty. Operand 47231 states and 82765 transitions. [2024-10-31 22:15:15,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2024-10-31 22:15:15,783 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:15:15,784 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:15:15,784 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-31 22:15:15,784 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:15:15,784 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:15:15,785 INFO L85 PathProgramCache]: Analyzing trace with hash 817169937, now seen corresponding path program 1 times [2024-10-31 22:15:15,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:15:15,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556465157] [2024-10-31 22:15:15,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:15:15,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:15:16,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:15:16,288 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 22:15:16,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:15:16,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556465157] [2024-10-31 22:15:16,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556465157] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:15:16,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:15:16,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:15:16,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357664154] [2024-10-31 22:15:16,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:15:16,290 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:15:16,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:15:16,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:15:16,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:15:16,291 INFO L87 Difference]: Start difference. First operand 47231 states and 82765 transitions. Second operand has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 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 22:15:17,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:15:17,235 INFO L93 Difference]: Finished difference Result 91419 states and 160062 transitions. [2024-10-31 22:15:17,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:15:17,352 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 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 239 [2024-10-31 22:15:17,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:15:17,546 INFO L225 Difference]: With dead ends: 91419 [2024-10-31 22:15:17,546 INFO L226 Difference]: Without dead ends: 66361 [2024-10-31 22:15:17,590 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 22:15:17,593 INFO L432 NwaCegarLoop]: 1356 mSDtfsCounter, 198 mSDsluCounter, 1192 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 198 SdHoareTripleChecker+Valid, 2548 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-31 22:15:17,594 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [198 Valid, 2548 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-31 22:15:17,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66361 states. [2024-10-31 22:15:19,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66361 to 66359. [2024-10-31 22:15:19,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66359 states, 66358 states have (on average 1.7423219506314236) internal successors, (115617), 66358 states have internal predecessors, (115617), 0 states have call successors, (0), 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 22:15:19,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66359 states to 66359 states and 115617 transitions. [2024-10-31 22:15:19,720 INFO L78 Accepts]: Start accepts. Automaton has 66359 states and 115617 transitions. Word has length 239 [2024-10-31 22:15:19,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:15:19,721 INFO L471 AbstractCegarLoop]: Abstraction has 66359 states and 115617 transitions. [2024-10-31 22:15:19,721 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 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 22:15:19,722 INFO L276 IsEmpty]: Start isEmpty. Operand 66359 states and 115617 transitions. [2024-10-31 22:15:19,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2024-10-31 22:15:19,726 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:15:19,726 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:15:19,726 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-31 22:15:19,727 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:15:19,727 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:15:19,727 INFO L85 PathProgramCache]: Analyzing trace with hash 93693410, now seen corresponding path program 1 times [2024-10-31 22:15:19,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:15:19,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368286262] [2024-10-31 22:15:19,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:15:19,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:15:19,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:15:20,066 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 22:15:20,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:15:20,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368286262] [2024-10-31 22:15:20,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368286262] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:15:20,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:15:20,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-31 22:15:20,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431393503] [2024-10-31 22:15:20,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:15:20,068 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:15:20,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:15:20,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:15:20,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:15:20,070 INFO L87 Difference]: Start difference. First operand 66359 states and 115617 transitions. Second operand has 4 states, 4 states have (on average 59.75) internal successors, (239), 4 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)