./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_Barrel.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4fc63b2a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b62863ec-78c1-49ca-9eaa-68a68bdf1ccb/bin/uautomizer-verify-4GaUIPS5ZU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b62863ec-78c1-49ca-9eaa-68a68bdf1ccb/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_b62863ec-78c1-49ca-9eaa-68a68bdf1ccb/bin/uautomizer-verify-4GaUIPS5ZU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b62863ec-78c1-49ca-9eaa-68a68bdf1ccb/bin/uautomizer-verify-4GaUIPS5ZU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_Barrel.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b62863ec-78c1-49ca-9eaa-68a68bdf1ccb/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b62863ec-78c1-49ca-9eaa-68a68bdf1ccb/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 64bit --witnessprinter.graph.data.programhash ae5f6e98a9adcbdf5e1e7125ae4ea5d0cf3bfadfc22b5bc300cef6d9a8d4cfbb --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-10-31 22:07:54,211 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-31 22:07:54,324 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b62863ec-78c1-49ca-9eaa-68a68bdf1ccb/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-10-31 22:07:54,334 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-31 22:07:54,335 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-31 22:07:54,372 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-31 22:07:54,373 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-31 22:07:54,374 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-31 22:07:54,375 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-31 22:07:54,376 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-31 22:07:54,377 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-31 22:07:54,378 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-31 22:07:54,378 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-31 22:07:54,379 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-31 22:07:54,379 INFO L153 SettingsManager]: * Use SBE=true [2024-10-31 22:07:54,380 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-31 22:07:54,380 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-31 22:07:54,381 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-31 22:07:54,381 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-31 22:07:54,381 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-31 22:07:54,382 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-31 22:07:54,386 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-31 22:07:54,387 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-31 22:07:54,387 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-31 22:07:54,390 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-31 22:07:54,391 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-31 22:07:54,391 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-31 22:07:54,392 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-31 22:07:54,392 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-31 22:07:54,392 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:07:54,393 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-31 22:07:54,393 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-31 22:07:54,394 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-31 22:07:54,395 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-31 22:07:54,396 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-31 22:07:54,396 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-31 22:07:54,397 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-31 22:07:54,398 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-31 22:07:54,398 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-31 22:07:54,398 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_b62863ec-78c1-49ca-9eaa-68a68bdf1ccb/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b62863ec-78c1-49ca-9eaa-68a68bdf1ccb/bin/uautomizer-verify-4GaUIPS5ZU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ae5f6e98a9adcbdf5e1e7125ae4ea5d0cf3bfadfc22b5bc300cef6d9a8d4cfbb [2024-10-31 22:07:54,752 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-31 22:07:54,793 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-31 22:07:54,797 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-31 22:07:54,800 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-31 22:07:54,801 INFO L274 PluginConnector]: CDTParser initialized [2024-10-31 22:07:54,803 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b62863ec-78c1-49ca-9eaa-68a68bdf1ccb/bin/uautomizer-verify-4GaUIPS5ZU/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_Barrel.c Unable to find full path for "g++" [2024-10-31 22:07:57,122 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-31 22:07:57,394 INFO L384 CDTParser]: Found 1 translation units. [2024-10-31 22:07:57,395 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b62863ec-78c1-49ca-9eaa-68a68bdf1ccb/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_Barrel.c [2024-10-31 22:07:57,421 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b62863ec-78c1-49ca-9eaa-68a68bdf1ccb/bin/uautomizer-verify-4GaUIPS5ZU/data/1836cddb9/bd302cc19b02426ea7139799ec0cb299/FLAG70046313c [2024-10-31 22:07:57,447 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b62863ec-78c1-49ca-9eaa-68a68bdf1ccb/bin/uautomizer-verify-4GaUIPS5ZU/data/1836cddb9/bd302cc19b02426ea7139799ec0cb299 [2024-10-31 22:07:57,454 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-31 22:07:57,455 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-31 22:07:57,461 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-31 22:07:57,461 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-31 22:07:57,471 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-31 22:07:57,472 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:07:57" (1/1) ... [2024-10-31 22:07:57,476 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@267e4905 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:07:57, skipping insertion in model container [2024-10-31 22:07:57,476 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:07:57" (1/1) ... [2024-10-31 22:07:57,532 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-31 22:07:57,830 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_b62863ec-78c1-49ca-9eaa-68a68bdf1ccb/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_Barrel.c[1248,1261] [2024-10-31 22:07:57,989 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:07:58,003 INFO L200 MainTranslator]: Completed pre-run [2024-10-31 22:07:58,019 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_b62863ec-78c1-49ca-9eaa-68a68bdf1ccb/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_Barrel.c[1248,1261] [2024-10-31 22:07:58,110 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:07:58,135 INFO L204 MainTranslator]: Completed translation [2024-10-31 22:07:58,135 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:07:58 WrapperNode [2024-10-31 22:07:58,136 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-31 22:07:58,137 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-31 22:07:58,137 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-31 22:07:58,138 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-31 22:07:58,145 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:07:58" (1/1) ... [2024-10-31 22:07:58,173 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:07:58" (1/1) ... [2024-10-31 22:07:58,298 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 550 [2024-10-31 22:07:58,299 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-31 22:07:58,300 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-31 22:07:58,301 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-31 22:07:58,302 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-31 22:07:58,315 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:07:58" (1/1) ... [2024-10-31 22:07:58,316 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:07:58" (1/1) ... [2024-10-31 22:07:58,337 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:07:58" (1/1) ... [2024-10-31 22:07:58,396 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 22:07:58,400 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:07:58" (1/1) ... [2024-10-31 22:07:58,400 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:07:58" (1/1) ... [2024-10-31 22:07:58,425 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:07:58" (1/1) ... [2024-10-31 22:07:58,431 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:07:58" (1/1) ... [2024-10-31 22:07:58,442 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:07:58" (1/1) ... [2024-10-31 22:07:58,448 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:07:58" (1/1) ... [2024-10-31 22:07:58,468 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-31 22:07:58,470 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-31 22:07:58,470 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-31 22:07:58,470 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-31 22:07:58,472 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:07:58" (1/1) ... [2024-10-31 22:07:58,478 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:07:58,492 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b62863ec-78c1-49ca-9eaa-68a68bdf1ccb/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:07:58,506 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b62863ec-78c1-49ca-9eaa-68a68bdf1ccb/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-31 22:07:58,509 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b62863ec-78c1-49ca-9eaa-68a68bdf1ccb/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-31 22:07:58,543 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-31 22:07:58,543 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-31 22:07:58,544 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-31 22:07:58,544 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-31 22:07:58,767 INFO L238 CfgBuilder]: Building ICFG [2024-10-31 22:07:58,770 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-31 22:08:00,015 INFO L? ?]: Removed 359 outVars from TransFormulas that were not future-live. [2024-10-31 22:08:00,016 INFO L287 CfgBuilder]: Performing block encoding [2024-10-31 22:08:00,036 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-31 22:08:00,038 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-31 22:08:00,039 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:08:00 BoogieIcfgContainer [2024-10-31 22:08:00,039 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-31 22:08:00,042 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-31 22:08:00,044 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-31 22:08:00,048 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-31 22:08:00,048 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.10 10:07:57" (1/3) ... [2024-10-31 22:08:00,050 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ac27ce2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:08:00, skipping insertion in model container [2024-10-31 22:08:00,050 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:07:58" (2/3) ... [2024-10-31 22:08:00,052 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ac27ce2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:08:00, skipping insertion in model container [2024-10-31 22:08:00,052 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:08:00" (3/3) ... [2024-10-31 22:08:00,054 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.h_Barrel.c [2024-10-31 22:08:00,077 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-31 22:08:00,078 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-31 22:08:00,177 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 22:08:00,187 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;@2d9a901f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 22:08:00,189 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-31 22:08:00,195 INFO L276 IsEmpty]: Start isEmpty. Operand has 158 states, 156 states have (on average 1.4935897435897436) internal successors, (233), 157 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 22:08:00,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-10-31 22:08:00,210 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:08:00,211 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] [2024-10-31 22:08:00,212 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:08:00,219 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:08:00,220 INFO L85 PathProgramCache]: Analyzing trace with hash -808785509, now seen corresponding path program 1 times [2024-10-31 22:08:00,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:08:00,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680139246] [2024-10-31 22:08:00,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:08:00,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:08:00,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:08:02,188 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 22:08:02,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:08:02,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680139246] [2024-10-31 22:08:02,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680139246] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:08:02,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:08:02,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-31 22:08:02,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395404012] [2024-10-31 22:08:02,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:08:02,203 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 22:08:02,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:08:02,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 22:08:02,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:08:02,246 INFO L87 Difference]: Start difference. First operand has 158 states, 156 states have (on average 1.4935897435897436) internal successors, (233), 157 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) Second operand has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 0 states have call successors, (0), 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 22:08:02,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:08:02,396 INFO L93 Difference]: Finished difference Result 299 states and 444 transitions. [2024-10-31 22:08:02,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-31 22:08:02,399 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 0 states have call successors, (0), 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 79 [2024-10-31 22:08:02,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:08:02,417 INFO L225 Difference]: With dead ends: 299 [2024-10-31 22:08:02,417 INFO L226 Difference]: Without dead ends: 159 [2024-10-31 22:08:02,422 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-10-31 22:08:02,429 INFO L432 NwaCegarLoop]: 225 mSDtfsCounter, 163 mSDsluCounter, 442 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 667 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-31 22:08:02,431 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 667 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-31 22:08:02,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2024-10-31 22:08:02,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 158. [2024-10-31 22:08:02,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 157 states have (on average 1.4777070063694266) internal successors, (232), 157 states have internal predecessors, (232), 0 states have call successors, (0), 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 22:08:02,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 232 transitions. [2024-10-31 22:08:02,496 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 232 transitions. Word has length 79 [2024-10-31 22:08:02,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:08:02,497 INFO L471 AbstractCegarLoop]: Abstraction has 158 states and 232 transitions. [2024-10-31 22:08:02,498 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 0 states have call successors, (0), 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 22:08:02,498 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 232 transitions. [2024-10-31 22:08:02,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-10-31 22:08:02,501 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:08:02,501 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:08:02,501 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-31 22:08:02,502 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:08:02,502 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:08:02,503 INFO L85 PathProgramCache]: Analyzing trace with hash -1698479195, now seen corresponding path program 1 times [2024-10-31 22:08:02,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:08:02,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267641088] [2024-10-31 22:08:02,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:08:02,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:08:02,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:08:03,168 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 22:08:03,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:08:03,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267641088] [2024-10-31 22:08:03,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267641088] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:08:03,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:08:03,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-31 22:08:03,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934287974] [2024-10-31 22:08:03,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:08:03,177 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 22:08:03,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:08:03,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 22:08:03,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:08:03,180 INFO L87 Difference]: Start difference. First operand 158 states and 232 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 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 22:08:03,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:08:03,285 INFO L93 Difference]: Finished difference Result 304 states and 447 transitions. [2024-10-31 22:08:03,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-31 22:08:03,287 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 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 80 [2024-10-31 22:08:03,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:08:03,288 INFO L225 Difference]: With dead ends: 304 [2024-10-31 22:08:03,289 INFO L226 Difference]: Without dead ends: 164 [2024-10-31 22:08:03,289 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 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 22:08:03,295 INFO L432 NwaCegarLoop]: 226 mSDtfsCounter, 4 mSDsluCounter, 666 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 892 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-31 22:08:03,296 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 892 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-31 22:08:03,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2024-10-31 22:08:03,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 164. [2024-10-31 22:08:03,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 163 states have (on average 1.4723926380368098) internal successors, (240), 163 states have internal predecessors, (240), 0 states have call successors, (0), 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 22:08:03,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 240 transitions. [2024-10-31 22:08:03,320 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 240 transitions. Word has length 80 [2024-10-31 22:08:03,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:08:03,320 INFO L471 AbstractCegarLoop]: Abstraction has 164 states and 240 transitions. [2024-10-31 22:08:03,321 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 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 22:08:03,321 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 240 transitions. [2024-10-31 22:08:03,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-10-31 22:08:03,326 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:08:03,328 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] [2024-10-31 22:08:03,328 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-31 22:08:03,328 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:08:03,329 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:08:03,333 INFO L85 PathProgramCache]: Analyzing trace with hash 813788120, now seen corresponding path program 1 times [2024-10-31 22:08:03,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:08:03,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461813031] [2024-10-31 22:08:03,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:08:03,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:08:03,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:08:04,232 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 22:08:04,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:08:04,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461813031] [2024-10-31 22:08:04,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461813031] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:08:04,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:08:04,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-31 22:08:04,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460155293] [2024-10-31 22:08:04,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:08:04,234 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:08:04,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:08:04,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:08:04,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:08:04,239 INFO L87 Difference]: Start difference. First operand 164 states and 240 transitions. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 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 22:08:04,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:08:04,271 INFO L93 Difference]: Finished difference Result 168 states and 244 transitions. [2024-10-31 22:08:04,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 22:08:04,273 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 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 81 [2024-10-31 22:08:04,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:08:04,274 INFO L225 Difference]: With dead ends: 168 [2024-10-31 22:08:04,277 INFO L226 Difference]: Without dead ends: 166 [2024-10-31 22:08:04,278 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:08:04,279 INFO L432 NwaCegarLoop]: 227 mSDtfsCounter, 0 mSDsluCounter, 448 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 675 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-31 22:08:04,280 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 675 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-31 22:08:04,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2024-10-31 22:08:04,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2024-10-31 22:08:04,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 165 states have (on average 1.4666666666666666) internal successors, (242), 165 states have internal predecessors, (242), 0 states have call successors, (0), 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 22:08:04,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 242 transitions. [2024-10-31 22:08:04,298 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 242 transitions. Word has length 81 [2024-10-31 22:08:04,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:08:04,298 INFO L471 AbstractCegarLoop]: Abstraction has 166 states and 242 transitions. [2024-10-31 22:08:04,298 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 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 22:08:04,299 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 242 transitions. [2024-10-31 22:08:04,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-10-31 22:08:04,304 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:08:04,305 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] [2024-10-31 22:08:04,305 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-31 22:08:04,305 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:08:04,306 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:08:04,306 INFO L85 PathProgramCache]: Analyzing trace with hash -540676422, now seen corresponding path program 1 times [2024-10-31 22:08:04,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:08:04,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88402238] [2024-10-31 22:08:04,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:08:04,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:08:05,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:08:07,652 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 22:08:07,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:08:07,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88402238] [2024-10-31 22:08:07,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88402238] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:08:07,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:08:07,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-10-31 22:08:07,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994011861] [2024-10-31 22:08:07,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:08:07,657 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-31 22:08:07,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:08:07,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-31 22:08:07,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-10-31 22:08:07,661 INFO L87 Difference]: Start difference. First operand 166 states and 242 transitions. Second operand has 9 states, 9 states have (on average 9.11111111111111) internal successors, (82), 9 states have internal predecessors, (82), 0 states have call successors, (0), 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 22:08:08,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:08:08,152 INFO L93 Difference]: Finished difference Result 468 states and 683 transitions. [2024-10-31 22:08:08,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-31 22:08:08,153 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.11111111111111) internal successors, (82), 9 states have internal predecessors, (82), 0 states have call successors, (0), 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 82 [2024-10-31 22:08:08,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:08:08,155 INFO L225 Difference]: With dead ends: 468 [2024-10-31 22:08:08,155 INFO L226 Difference]: Without dead ends: 320 [2024-10-31 22:08:08,156 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2024-10-31 22:08:08,158 INFO L432 NwaCegarLoop]: 198 mSDtfsCounter, 639 mSDsluCounter, 1162 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 639 SdHoareTripleChecker+Valid, 1360 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-31 22:08:08,159 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [639 Valid, 1360 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-31 22:08:08,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2024-10-31 22:08:08,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 174. [2024-10-31 22:08:08,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 173 states have (on average 1.4566473988439306) internal successors, (252), 173 states have internal predecessors, (252), 0 states have call successors, (0), 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 22:08:08,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 252 transitions. [2024-10-31 22:08:08,171 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 252 transitions. Word has length 82 [2024-10-31 22:08:08,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:08:08,171 INFO L471 AbstractCegarLoop]: Abstraction has 174 states and 252 transitions. [2024-10-31 22:08:08,172 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.11111111111111) internal successors, (82), 9 states have internal predecessors, (82), 0 states have call successors, (0), 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 22:08:08,172 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 252 transitions. [2024-10-31 22:08:08,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2024-10-31 22:08:08,174 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:08:08,175 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] [2024-10-31 22:08:08,175 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-31 22:08:08,175 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:08:08,176 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:08:08,176 INFO L85 PathProgramCache]: Analyzing trace with hash 1751935148, now seen corresponding path program 1 times [2024-10-31 22:08:08,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:08:08,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854738304] [2024-10-31 22:08:08,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:08:08,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:08:08,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:08:10,745 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 22:08:10,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:08:10,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854738304] [2024-10-31 22:08:10,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854738304] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:08:10,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:08:10,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-10-31 22:08:10,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428314572] [2024-10-31 22:08:10,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:08:10,749 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-31 22:08:10,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:08:10,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-31 22:08:10,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-10-31 22:08:10,751 INFO L87 Difference]: Start difference. First operand 174 states and 252 transitions. Second operand has 9 states, 9 states have (on average 9.222222222222221) internal successors, (83), 9 states have internal predecessors, (83), 0 states have call successors, (0), 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 22:08:11,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:08:11,181 INFO L93 Difference]: Finished difference Result 475 states and 691 transitions. [2024-10-31 22:08:11,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-31 22:08:11,182 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.222222222222221) internal successors, (83), 9 states have internal predecessors, (83), 0 states have call successors, (0), 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 83 [2024-10-31 22:08:11,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:08:11,184 INFO L225 Difference]: With dead ends: 475 [2024-10-31 22:08:11,184 INFO L226 Difference]: Without dead ends: 327 [2024-10-31 22:08:11,185 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-10-31 22:08:11,186 INFO L432 NwaCegarLoop]: 198 mSDtfsCounter, 635 mSDsluCounter, 1140 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 635 SdHoareTripleChecker+Valid, 1338 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-31 22:08:11,187 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [635 Valid, 1338 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-31 22:08:11,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2024-10-31 22:08:11,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 187. [2024-10-31 22:08:11,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 186 states have (on average 1.456989247311828) internal successors, (271), 186 states have internal predecessors, (271), 0 states have call successors, (0), 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 22:08:11,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 271 transitions. [2024-10-31 22:08:11,197 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 271 transitions. Word has length 83 [2024-10-31 22:08:11,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:08:11,197 INFO L471 AbstractCegarLoop]: Abstraction has 187 states and 271 transitions. [2024-10-31 22:08:11,198 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.222222222222221) internal successors, (83), 9 states have internal predecessors, (83), 0 states have call successors, (0), 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 22:08:11,198 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 271 transitions. [2024-10-31 22:08:11,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-10-31 22:08:11,199 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:08:11,199 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] [2024-10-31 22:08:11,200 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-31 22:08:11,200 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:08:11,201 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:08:11,201 INFO L85 PathProgramCache]: Analyzing trace with hash -2009296888, now seen corresponding path program 1 times [2024-10-31 22:08:11,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:08:11,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698467416] [2024-10-31 22:08:11,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:08:11,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:08:11,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:08:12,713 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 22:08:12,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:08:12,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698467416] [2024-10-31 22:08:12,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698467416] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:08:12,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:08:12,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-10-31 22:08:12,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685705421] [2024-10-31 22:08:12,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:08:12,715 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-31 22:08:12,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:08:12,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-31 22:08:12,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-10-31 22:08:12,717 INFO L87 Difference]: Start difference. First operand 187 states and 271 transitions. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 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 22:08:13,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:08:13,013 INFO L93 Difference]: Finished difference Result 480 states and 698 transitions. [2024-10-31 22:08:13,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-31 22:08:13,014 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 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 84 [2024-10-31 22:08:13,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:08:13,015 INFO L225 Difference]: With dead ends: 480 [2024-10-31 22:08:13,015 INFO L226 Difference]: Without dead ends: 332 [2024-10-31 22:08:13,016 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-10-31 22:08:13,020 INFO L432 NwaCegarLoop]: 199 mSDtfsCounter, 424 mSDsluCounter, 1144 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 424 SdHoareTripleChecker+Valid, 1343 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-31 22:08:13,020 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [424 Valid, 1343 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-31 22:08:13,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2024-10-31 22:08:13,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 200. [2024-10-31 22:08:13,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 199 states have (on average 1.4522613065326633) internal successors, (289), 199 states have internal predecessors, (289), 0 states have call successors, (0), 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 22:08:13,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 289 transitions. [2024-10-31 22:08:13,036 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 289 transitions. Word has length 84 [2024-10-31 22:08:13,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:08:13,037 INFO L471 AbstractCegarLoop]: Abstraction has 200 states and 289 transitions. [2024-10-31 22:08:13,037 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 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 22:08:13,037 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 289 transitions. [2024-10-31 22:08:13,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-10-31 22:08:13,038 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:08:13,038 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] [2024-10-31 22:08:13,038 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-31 22:08:13,038 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:08:13,042 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:08:13,042 INFO L85 PathProgramCache]: Analyzing trace with hash -2015780803, now seen corresponding path program 1 times [2024-10-31 22:08:13,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:08:13,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650741469] [2024-10-31 22:08:13,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:08:13,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:08:13,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:08:14,266 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 22:08:14,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:08:14,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650741469] [2024-10-31 22:08:14,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650741469] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:08:14,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:08:14,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-31 22:08:14,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009317025] [2024-10-31 22:08:14,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:08:14,268 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-31 22:08:14,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:08:14,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-31 22:08:14,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-10-31 22:08:14,270 INFO L87 Difference]: Start difference. First operand 200 states and 289 transitions. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 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 22:08:14,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:08:14,411 INFO L93 Difference]: Finished difference Result 370 states and 537 transitions. [2024-10-31 22:08:14,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-31 22:08:14,412 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 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 84 [2024-10-31 22:08:14,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:08:14,413 INFO L225 Difference]: With dead ends: 370 [2024-10-31 22:08:14,414 INFO L226 Difference]: Without dead ends: 209 [2024-10-31 22:08:14,414 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-10-31 22:08:14,415 INFO L432 NwaCegarLoop]: 216 mSDtfsCounter, 4 mSDsluCounter, 1276 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 1492 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-31 22:08:14,415 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 1492 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-31 22:08:14,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2024-10-31 22:08:14,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 206. [2024-10-31 22:08:14,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 205 states have (on average 1.448780487804878) internal successors, (297), 205 states have internal predecessors, (297), 0 states have call successors, (0), 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 22:08:14,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 297 transitions. [2024-10-31 22:08:14,422 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 297 transitions. Word has length 84 [2024-10-31 22:08:14,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:08:14,422 INFO L471 AbstractCegarLoop]: Abstraction has 206 states and 297 transitions. [2024-10-31 22:08:14,423 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 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 22:08:14,423 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 297 transitions. [2024-10-31 22:08:14,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-10-31 22:08:14,424 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:08:14,424 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] [2024-10-31 22:08:14,424 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-31 22:08:14,424 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:08:14,425 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:08:14,425 INFO L85 PathProgramCache]: Analyzing trace with hash 268254877, now seen corresponding path program 1 times [2024-10-31 22:08:14,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:08:14,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138140029] [2024-10-31 22:08:14,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:08:14,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:08:14,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:08:15,265 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 22:08:15,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:08:15,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138140029] [2024-10-31 22:08:15,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138140029] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:08:15,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:08:15,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-31 22:08:15,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189423834] [2024-10-31 22:08:15,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:08:15,268 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:08:15,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:08:15,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:08:15,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:08:15,269 INFO L87 Difference]: Start difference. First operand 206 states and 297 transitions. Second operand has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 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 22:08:15,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:08:15,291 INFO L93 Difference]: Finished difference Result 379 states and 549 transitions. [2024-10-31 22:08:15,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 22:08:15,292 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 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 84 [2024-10-31 22:08:15,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:08:15,293 INFO L225 Difference]: With dead ends: 379 [2024-10-31 22:08:15,293 INFO L226 Difference]: Without dead ends: 203 [2024-10-31 22:08:15,293 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:08:15,294 INFO L432 NwaCegarLoop]: 224 mSDtfsCounter, 0 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 445 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-31 22:08:15,295 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 445 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-31 22:08:15,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2024-10-31 22:08:15,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 203. [2024-10-31 22:08:15,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 202 states have (on average 1.4405940594059405) internal successors, (291), 202 states have internal predecessors, (291), 0 states have call successors, (0), 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 22:08:15,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 291 transitions. [2024-10-31 22:08:15,304 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 291 transitions. Word has length 84 [2024-10-31 22:08:15,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:08:15,304 INFO L471 AbstractCegarLoop]: Abstraction has 203 states and 291 transitions. [2024-10-31 22:08:15,309 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 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 22:08:15,309 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 291 transitions. [2024-10-31 22:08:15,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-10-31 22:08:15,314 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:08:15,314 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] [2024-10-31 22:08:15,314 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-31 22:08:15,315 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:08:15,315 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:08:15,315 INFO L85 PathProgramCache]: Analyzing trace with hash 498255101, now seen corresponding path program 1 times [2024-10-31 22:08:15,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:08:15,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249863496] [2024-10-31 22:08:15,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:08:15,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:08:15,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:08:16,221 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 22:08:16,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:08:16,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249863496] [2024-10-31 22:08:16,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249863496] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:08:16,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:08:16,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-31 22:08:16,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542268921] [2024-10-31 22:08:16,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:08:16,223 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:08:16,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:08:16,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:08:16,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:08:16,224 INFO L87 Difference]: Start difference. First operand 203 states and 291 transitions. Second operand has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 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 22:08:16,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:08:16,253 INFO L93 Difference]: Finished difference Result 368 states and 530 transitions. [2024-10-31 22:08:16,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 22:08:16,254 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 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 84 [2024-10-31 22:08:16,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:08:16,255 INFO L225 Difference]: With dead ends: 368 [2024-10-31 22:08:16,258 INFO L226 Difference]: Without dead ends: 190 [2024-10-31 22:08:16,259 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:08:16,259 INFO L432 NwaCegarLoop]: 222 mSDtfsCounter, 0 mSDsluCounter, 438 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 660 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-31 22:08:16,260 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 660 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-31 22:08:16,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2024-10-31 22:08:16,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 190. [2024-10-31 22:08:16,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 189 states have (on average 1.433862433862434) internal successors, (271), 189 states have internal predecessors, (271), 0 states have call successors, (0), 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 22:08:16,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 271 transitions. [2024-10-31 22:08:16,267 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 271 transitions. Word has length 84 [2024-10-31 22:08:16,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:08:16,268 INFO L471 AbstractCegarLoop]: Abstraction has 190 states and 271 transitions. [2024-10-31 22:08:16,268 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 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 22:08:16,268 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 271 transitions. [2024-10-31 22:08:16,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-10-31 22:08:16,271 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:08:16,271 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] [2024-10-31 22:08:16,272 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-31 22:08:16,272 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:08:16,272 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:08:16,272 INFO L85 PathProgramCache]: Analyzing trace with hash -1636798918, now seen corresponding path program 1 times [2024-10-31 22:08:16,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:08:16,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711486986] [2024-10-31 22:08:16,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:08:16,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:08:16,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:08:17,731 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 22:08:17,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:08:17,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711486986] [2024-10-31 22:08:17,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711486986] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:08:17,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:08:17,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-10-31 22:08:17,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90876380] [2024-10-31 22:08:17,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:08:17,734 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-31 22:08:17,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:08:17,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-31 22:08:17,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-10-31 22:08:17,735 INFO L87 Difference]: Start difference. First operand 190 states and 271 transitions. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 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 22:08:18,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:08:18,052 INFO L93 Difference]: Finished difference Result 478 states and 689 transitions. [2024-10-31 22:08:18,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-31 22:08:18,053 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 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 85 [2024-10-31 22:08:18,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:08:18,054 INFO L225 Difference]: With dead ends: 478 [2024-10-31 22:08:18,054 INFO L226 Difference]: Without dead ends: 327 [2024-10-31 22:08:18,055 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-10-31 22:08:18,056 INFO L432 NwaCegarLoop]: 195 mSDtfsCounter, 405 mSDsluCounter, 1108 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 405 SdHoareTripleChecker+Valid, 1303 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-31 22:08:18,057 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [405 Valid, 1303 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-31 22:08:18,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2024-10-31 22:08:18,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 203. [2024-10-31 22:08:18,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 202 states have (on average 1.4306930693069306) internal successors, (289), 202 states have internal predecessors, (289), 0 states have call successors, (0), 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 22:08:18,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 289 transitions. [2024-10-31 22:08:18,064 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 289 transitions. Word has length 85 [2024-10-31 22:08:18,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:08:18,065 INFO L471 AbstractCegarLoop]: Abstraction has 203 states and 289 transitions. [2024-10-31 22:08:18,065 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 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 22:08:18,065 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 289 transitions. [2024-10-31 22:08:18,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-10-31 22:08:18,066 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:08:18,066 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] [2024-10-31 22:08:18,067 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-31 22:08:18,067 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:08:18,067 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:08:18,068 INFO L85 PathProgramCache]: Analyzing trace with hash 1025499375, now seen corresponding path program 1 times [2024-10-31 22:08:18,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:08:18,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319160893] [2024-10-31 22:08:18,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:08:18,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:08:18,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:08:19,433 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 22:08:19,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:08:19,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319160893] [2024-10-31 22:08:19,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319160893] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:08:19,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:08:19,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-10-31 22:08:19,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180191274] [2024-10-31 22:08:19,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:08:19,435 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-31 22:08:19,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:08:19,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-31 22:08:19,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2024-10-31 22:08:19,436 INFO L87 Difference]: Start difference. First operand 203 states and 289 transitions. Second operand has 11 states, 11 states have (on average 7.7272727272727275) internal successors, (85), 11 states have internal predecessors, (85), 0 states have call successors, (0), 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 22:08:19,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:08:19,641 INFO L93 Difference]: Finished difference Result 382 states and 548 transitions. [2024-10-31 22:08:19,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-31 22:08:19,642 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.7272727272727275) internal successors, (85), 11 states have internal predecessors, (85), 0 states have call successors, (0), 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 85 [2024-10-31 22:08:19,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:08:19,644 INFO L225 Difference]: With dead ends: 382 [2024-10-31 22:08:19,644 INFO L226 Difference]: Without dead ends: 218 [2024-10-31 22:08:19,645 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2024-10-31 22:08:19,646 INFO L432 NwaCegarLoop]: 206 mSDtfsCounter, 6 mSDsluCounter, 1630 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 1836 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-31 22:08:19,646 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 1836 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-31 22:08:19,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2024-10-31 22:08:19,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 216. [2024-10-31 22:08:19,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 215 states have (on average 1.4232558139534883) internal successors, (306), 215 states have internal predecessors, (306), 0 states have call successors, (0), 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 22:08:19,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 306 transitions. [2024-10-31 22:08:19,652 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 306 transitions. Word has length 85 [2024-10-31 22:08:19,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:08:19,653 INFO L471 AbstractCegarLoop]: Abstraction has 216 states and 306 transitions. [2024-10-31 22:08:19,653 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.7272727272727275) internal successors, (85), 11 states have internal predecessors, (85), 0 states have call successors, (0), 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 22:08:19,653 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 306 transitions. [2024-10-31 22:08:19,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-10-31 22:08:19,654 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:08:19,654 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] [2024-10-31 22:08:19,654 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-31 22:08:19,655 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:08:19,655 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:08:19,655 INFO L85 PathProgramCache]: Analyzing trace with hash 160542543, now seen corresponding path program 1 times [2024-10-31 22:08:19,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:08:19,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778587071] [2024-10-31 22:08:19,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:08:19,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:08:19,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:08:20,803 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 22:08:20,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:08:20,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778587071] [2024-10-31 22:08:20,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778587071] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:08:20,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:08:20,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-31 22:08:20,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668419049] [2024-10-31 22:08:20,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:08:20,806 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-31 22:08:20,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:08:20,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-31 22:08:20,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-10-31 22:08:20,807 INFO L87 Difference]: Start difference. First operand 216 states and 306 transitions. Second operand has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 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 22:08:20,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:08:20,913 INFO L93 Difference]: Finished difference Result 399 states and 571 transitions. [2024-10-31 22:08:20,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-31 22:08:20,913 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 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 85 [2024-10-31 22:08:20,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:08:20,914 INFO L225 Difference]: With dead ends: 399 [2024-10-31 22:08:20,915 INFO L226 Difference]: Without dead ends: 226 [2024-10-31 22:08:20,915 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-10-31 22:08:20,916 INFO L432 NwaCegarLoop]: 214 mSDtfsCounter, 3 mSDsluCounter, 1051 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1265 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-31 22:08:20,919 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 1265 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-31 22:08:20,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2024-10-31 22:08:20,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 222. [2024-10-31 22:08:20,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 221 states have (on average 1.420814479638009) internal successors, (314), 221 states have internal predecessors, (314), 0 states have call successors, (0), 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 22:08:20,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 314 transitions. [2024-10-31 22:08:20,930 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 314 transitions. Word has length 85 [2024-10-31 22:08:20,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:08:20,930 INFO L471 AbstractCegarLoop]: Abstraction has 222 states and 314 transitions. [2024-10-31 22:08:20,931 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 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 22:08:20,931 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 314 transitions. [2024-10-31 22:08:20,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-10-31 22:08:20,932 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:08:20,932 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:08:20,932 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-31 22:08:20,932 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:08:20,937 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:08:20,940 INFO L85 PathProgramCache]: Analyzing trace with hash -802047253, now seen corresponding path program 1 times [2024-10-31 22:08:20,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:08:20,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586256287] [2024-10-31 22:08:20,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:08:20,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:08:21,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:08:22,120 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 22:08:22,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:08:22,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586256287] [2024-10-31 22:08:22,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586256287] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:08:22,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:08:22,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-31 22:08:22,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882836288] [2024-10-31 22:08:22,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:08:22,124 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-31 22:08:22,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:08:22,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-31 22:08:22,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-10-31 22:08:22,125 INFO L87 Difference]: Start difference. First operand 222 states and 314 transitions. Second operand has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)