./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cav14_example.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a0165632 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_b074a510-5cb8-4783-be92-024dadbdf25f/bin/uautomizer-verify-jihMAELWvX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b074a510-5cb8-4783-be92-024dadbdf25f/bin/uautomizer-verify-jihMAELWvX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b074a510-5cb8-4783-be92-024dadbdf25f/bin/uautomizer-verify-jihMAELWvX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b074a510-5cb8-4783-be92-024dadbdf25f/bin/uautomizer-verify-jihMAELWvX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cav14_example.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b074a510-5cb8-4783-be92-024dadbdf25f/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b074a510-5cb8-4783-be92-024dadbdf25f/bin/uautomizer-verify-jihMAELWvX --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 da271682498909c2f25abbd0acdfd9a043f664f7a7cb078f9b27fc5caa97b14c --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-08 19:08:38,189 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 19:08:38,285 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b074a510-5cb8-4783-be92-024dadbdf25f/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-11-08 19:08:38,292 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 19:08:38,294 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 19:08:38,330 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 19:08:38,331 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 19:08:38,331 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 19:08:38,332 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 19:08:38,332 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 19:08:38,332 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 19:08:38,333 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 19:08:38,334 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 19:08:38,334 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 19:08:38,335 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 19:08:38,335 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 19:08:38,335 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 19:08:38,336 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 19:08:38,336 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 19:08:38,337 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 19:08:38,340 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 19:08:38,341 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 19:08:38,341 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 19:08:38,341 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 19:08:38,342 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 19:08:38,346 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 19:08:38,347 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 19:08:38,347 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 19:08:38,347 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 19:08:38,347 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 19:08:38,348 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 19:08:38,348 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 19:08:38,348 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 19:08:38,348 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 19:08:38,349 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 19:08:38,349 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 19:08:38,349 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 19:08:38,350 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 19:08:38,350 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 19:08:38,352 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_b074a510-5cb8-4783-be92-024dadbdf25f/bin/uautomizer-verify-jihMAELWvX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b074a510-5cb8-4783-be92-024dadbdf25f/bin/uautomizer-verify-jihMAELWvX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> da271682498909c2f25abbd0acdfd9a043f664f7a7cb078f9b27fc5caa97b14c [2024-11-08 19:08:38,709 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 19:08:38,746 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 19:08:38,750 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 19:08:38,752 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 19:08:38,752 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 19:08:38,754 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b074a510-5cb8-4783-be92-024dadbdf25f/bin/uautomizer-verify-jihMAELWvX/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cav14_example.c Unable to find full path for "g++" [2024-11-08 19:08:40,932 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 19:08:41,189 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 19:08:41,190 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b074a510-5cb8-4783-be92-024dadbdf25f/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cav14_example.c [2024-11-08 19:08:41,200 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b074a510-5cb8-4783-be92-024dadbdf25f/bin/uautomizer-verify-jihMAELWvX/data/535dd7167/ff15e787abce4f94b17131e116423e48/FLAG739adc2eb [2024-11-08 19:08:41,538 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b074a510-5cb8-4783-be92-024dadbdf25f/bin/uautomizer-verify-jihMAELWvX/data/535dd7167/ff15e787abce4f94b17131e116423e48 [2024-11-08 19:08:41,541 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 19:08:41,543 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 19:08:41,545 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 19:08:41,545 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 19:08:41,554 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 19:08:41,555 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 07:08:41" (1/1) ... [2024-11-08 19:08:41,559 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5acab7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:08:41, skipping insertion in model container [2024-11-08 19:08:41,559 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 07:08:41" (1/1) ... [2024-11-08 19:08:41,597 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 19:08:41,810 WARN L250 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_b074a510-5cb8-4783-be92-024dadbdf25f/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cav14_example.c[1253,1266] [2024-11-08 19:08:41,907 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 19:08:41,921 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 19:08:41,936 WARN L250 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_b074a510-5cb8-4783-be92-024dadbdf25f/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cav14_example.c[1253,1266] [2024-11-08 19:08:42,001 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 19:08:42,031 INFO L204 MainTranslator]: Completed translation [2024-11-08 19:08:42,031 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:08:42 WrapperNode [2024-11-08 19:08:42,032 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 19:08:42,033 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 19:08:42,033 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 19:08:42,034 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 19:08:42,043 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:08:42" (1/1) ... [2024-11-08 19:08:42,060 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:08:42" (1/1) ... [2024-11-08 19:08:42,137 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 189 [2024-11-08 19:08:42,137 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 19:08:42,138 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 19:08:42,138 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 19:08:42,138 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 19:08:42,153 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:08:42" (1/1) ... [2024-11-08 19:08:42,154 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:08:42" (1/1) ... [2024-11-08 19:08:42,161 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:08:42" (1/1) ... [2024-11-08 19:08:42,201 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]. [2024-11-08 19:08:42,202 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:08:42" (1/1) ... [2024-11-08 19:08:42,202 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:08:42" (1/1) ... [2024-11-08 19:08:42,218 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:08:42" (1/1) ... [2024-11-08 19:08:42,227 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:08:42" (1/1) ... [2024-11-08 19:08:42,233 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:08:42" (1/1) ... [2024-11-08 19:08:42,238 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:08:42" (1/1) ... [2024-11-08 19:08:42,245 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 19:08:42,248 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 19:08:42,248 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 19:08:42,249 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 19:08:42,250 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:08:42" (1/1) ... [2024-11-08 19:08:42,257 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 19:08:42,271 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b074a510-5cb8-4783-be92-024dadbdf25f/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 19:08:42,293 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b074a510-5cb8-4783-be92-024dadbdf25f/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-08 19:08:42,299 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b074a510-5cb8-4783-be92-024dadbdf25f/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-08 19:08:42,343 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 19:08:42,344 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 19:08:42,344 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 19:08:42,345 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 19:08:42,445 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 19:08:42,448 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 19:08:43,003 INFO L? ?]: Removed 105 outVars from TransFormulas that were not future-live. [2024-11-08 19:08:43,003 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 19:08:43,017 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 19:08:43,018 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-08 19:08:43,018 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 07:08:43 BoogieIcfgContainer [2024-11-08 19:08:43,018 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 19:08:43,021 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 19:08:43,022 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 19:08:43,026 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 19:08:43,026 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 07:08:41" (1/3) ... [2024-11-08 19:08:43,027 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@627b9df2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 07:08:43, skipping insertion in model container [2024-11-08 19:08:43,027 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:08:42" (2/3) ... [2024-11-08 19:08:43,028 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@627b9df2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 07:08:43, skipping insertion in model container [2024-11-08 19:08:43,028 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 07:08:43" (3/3) ... [2024-11-08 19:08:43,030 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.cav14_example.c [2024-11-08 19:08:43,051 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 19:08:43,052 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-08 19:08:43,172 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 19:08:43,179 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;@3e5b77d6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 19:08:43,180 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-08 19:08:43,185 INFO L276 IsEmpty]: Start isEmpty. Operand has 51 states, 49 states have (on average 1.489795918367347) internal successors, (73), 50 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:08:43,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-08 19:08:43,193 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:08:43,194 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:08:43,194 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 19:08:43,201 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:08:43,201 INFO L85 PathProgramCache]: Analyzing trace with hash -1456516445, now seen corresponding path program 1 times [2024-11-08 19:08:43,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:08:43,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94363521] [2024-11-08 19:08:43,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:08:43,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:08:43,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:08:43,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:08:43,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:08:43,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94363521] [2024-11-08 19:08:43,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94363521] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 19:08:43,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 19:08:43,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 19:08:43,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923307969] [2024-11-08 19:08:43,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 19:08:43,889 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 19:08:43,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:08:43,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 19:08:43,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 19:08:43,933 INFO L87 Difference]: Start difference. First operand has 51 states, 49 states have (on average 1.489795918367347) internal successors, (73), 50 states have internal predecessors, (73), 0 states have call successors, (0), 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 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:08:43,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 19:08:43,999 INFO L93 Difference]: Finished difference Result 90 states and 132 transitions. [2024-11-08 19:08:44,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 19:08:44,002 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 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 13 [2024-11-08 19:08:44,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 19:08:44,009 INFO L225 Difference]: With dead ends: 90 [2024-11-08 19:08:44,009 INFO L226 Difference]: Without dead ends: 49 [2024-11-08 19:08:44,012 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 [2024-11-08 19:08:44,016 INFO L432 NwaCegarLoop]: 65 mSDtfsCounter, 0 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 189 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 [2024-11-08 19:08:44,017 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 189 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 19:08:44,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2024-11-08 19:08:44,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2024-11-08 19:08:44,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 48 states have (on average 1.4375) internal successors, (69), 48 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:08:44,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 69 transitions. [2024-11-08 19:08:44,055 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 69 transitions. Word has length 13 [2024-11-08 19:08:44,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 19:08:44,056 INFO L471 AbstractCegarLoop]: Abstraction has 49 states and 69 transitions. [2024-11-08 19:08:44,056 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:08:44,056 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 69 transitions. [2024-11-08 19:08:44,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-08 19:08:44,057 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:08:44,058 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:08:44,058 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 19:08:44,058 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 19:08:44,059 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:08:44,059 INFO L85 PathProgramCache]: Analyzing trace with hash 2094325670, now seen corresponding path program 1 times [2024-11-08 19:08:44,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:08:44,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121053425] [2024-11-08 19:08:44,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:08:44,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:08:44,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:08:44,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:08:44,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:08:44,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121053425] [2024-11-08 19:08:44,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121053425] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 19:08:44,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 19:08:44,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 19:08:44,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004863497] [2024-11-08 19:08:44,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 19:08:44,279 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 19:08:44,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:08:44,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 19:08:44,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 19:08:44,281 INFO L87 Difference]: Start difference. First operand 49 states and 69 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:08:44,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 19:08:44,329 INFO L93 Difference]: Finished difference Result 90 states and 127 transitions. [2024-11-08 19:08:44,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 19:08:44,329 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 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 14 [2024-11-08 19:08:44,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 19:08:44,330 INFO L225 Difference]: With dead ends: 90 [2024-11-08 19:08:44,331 INFO L226 Difference]: Without dead ends: 51 [2024-11-08 19:08:44,331 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 19:08:44,333 INFO L432 NwaCegarLoop]: 65 mSDtfsCounter, 0 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 19:08:44,333 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 185 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 19:08:44,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2024-11-08 19:08:44,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2024-11-08 19:08:44,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 50 states have (on average 1.42) internal successors, (71), 50 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:08:44,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 71 transitions. [2024-11-08 19:08:44,340 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 71 transitions. Word has length 14 [2024-11-08 19:08:44,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 19:08:44,340 INFO L471 AbstractCegarLoop]: Abstraction has 51 states and 71 transitions. [2024-11-08 19:08:44,341 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:08:44,341 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 71 transitions. [2024-11-08 19:08:44,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-08 19:08:44,341 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:08:44,342 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:08:44,342 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-08 19:08:44,342 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 19:08:44,343 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:08:44,343 INFO L85 PathProgramCache]: Analyzing trace with hash -598379556, now seen corresponding path program 1 times [2024-11-08 19:08:44,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:08:44,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521165535] [2024-11-08 19:08:44,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:08:44,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:08:44,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:08:44,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:08:44,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:08:44,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521165535] [2024-11-08 19:08:44,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1521165535] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 19:08:44,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 19:08:44,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-08 19:08:44,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364435933] [2024-11-08 19:08:44,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 19:08:44,787 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 19:08:44,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:08:44,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 19:08:44,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-08 19:08:44,792 INFO L87 Difference]: Start difference. First operand 51 states and 71 transitions. Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:08:44,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 19:08:44,924 INFO L93 Difference]: Finished difference Result 119 states and 166 transitions. [2024-11-08 19:08:44,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 19:08:44,925 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 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 15 [2024-11-08 19:08:44,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 19:08:44,926 INFO L225 Difference]: With dead ends: 119 [2024-11-08 19:08:44,926 INFO L226 Difference]: Without dead ends: 78 [2024-11-08 19:08:44,927 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-08 19:08:44,928 INFO L432 NwaCegarLoop]: 60 mSDtfsCounter, 44 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 221 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 19:08:44,929 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 221 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 19:08:44,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2024-11-08 19:08:44,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 53. [2024-11-08 19:08:44,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 52 states have (on average 1.4038461538461537) internal successors, (73), 52 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:08:44,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 73 transitions. [2024-11-08 19:08:44,943 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 73 transitions. Word has length 15 [2024-11-08 19:08:44,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 19:08:44,944 INFO L471 AbstractCegarLoop]: Abstraction has 53 states and 73 transitions. [2024-11-08 19:08:44,944 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:08:44,944 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 73 transitions. [2024-11-08 19:08:44,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-11-08 19:08:44,945 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:08:44,947 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:08:44,947 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-08 19:08:44,948 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 19:08:44,948 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:08:44,948 INFO L85 PathProgramCache]: Analyzing trace with hash 1328443764, now seen corresponding path program 1 times [2024-11-08 19:08:44,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:08:44,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351476371] [2024-11-08 19:08:44,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:08:44,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:08:45,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:08:45,646 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:08:45,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:08:45,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351476371] [2024-11-08 19:08:45,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351476371] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 19:08:45,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [374731864] [2024-11-08 19:08:45,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:08:45,648 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:08:45,649 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b074a510-5cb8-4783-be92-024dadbdf25f/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 19:08:45,651 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b074a510-5cb8-4783-be92-024dadbdf25f/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 19:08:45,654 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b074a510-5cb8-4783-be92-024dadbdf25f/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-08 19:08:45,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:08:45,853 INFO L255 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-08 19:08:45,861 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 19:08:46,235 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:08:46,236 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 19:08:46,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [374731864] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 19:08:46,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 19:08:46,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2024-11-08 19:08:46,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791920220] [2024-11-08 19:08:46,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 19:08:46,238 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-08 19:08:46,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:08:46,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-08 19:08:46,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-11-08 19:08:46,243 INFO L87 Difference]: Start difference. First operand 53 states and 73 transitions. Second operand has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 7 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:08:46,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 19:08:46,533 INFO L93 Difference]: Finished difference Result 122 states and 170 transitions. [2024-11-08 19:08:46,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-08 19:08:46,534 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 7 states have internal predecessors, (34), 0 states have call successors, (0), 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 34 [2024-11-08 19:08:46,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 19:08:46,537 INFO L225 Difference]: With dead ends: 122 [2024-11-08 19:08:46,537 INFO L226 Difference]: Without dead ends: 81 [2024-11-08 19:08:46,538 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2024-11-08 19:08:46,539 INFO L432 NwaCegarLoop]: 45 mSDtfsCounter, 43 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 19:08:46,539 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 234 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 19:08:46,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2024-11-08 19:08:46,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 63. [2024-11-08 19:08:46,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 62 states have (on average 1.3548387096774193) internal successors, (84), 62 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) [2024-11-08 19:08:46,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 84 transitions. [2024-11-08 19:08:46,548 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 84 transitions. Word has length 34 [2024-11-08 19:08:46,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 19:08:46,548 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 84 transitions. [2024-11-08 19:08:46,548 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 7 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:08:46,549 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 84 transitions. [2024-11-08 19:08:46,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-08 19:08:46,550 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:08:46,550 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:08:46,575 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b074a510-5cb8-4783-be92-024dadbdf25f/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-08 19:08:46,754 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b074a510-5cb8-4783-be92-024dadbdf25f/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:08:46,755 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 19:08:46,755 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:08:46,756 INFO L85 PathProgramCache]: Analyzing trace with hash -2118477799, now seen corresponding path program 1 times [2024-11-08 19:08:46,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:08:46,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454918962] [2024-11-08 19:08:46,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:08:46,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:08:46,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:08:47,439 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:08:47,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:08:47,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454918962] [2024-11-08 19:08:47,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [454918962] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 19:08:47,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 19:08:47,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-08 19:08:47,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372119351] [2024-11-08 19:08:47,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 19:08:47,442 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-08 19:08:47,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:08:47,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-08 19:08:47,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-08 19:08:47,447 INFO L87 Difference]: Start difference. First operand 63 states and 84 transitions. Second operand has 7 states, 7 states have (on average 5.0) internal successors, (35), 7 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:08:47,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 19:08:47,596 INFO L93 Difference]: Finished difference Result 154 states and 212 transitions. [2024-11-08 19:08:47,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-08 19:08:47,597 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.0) internal successors, (35), 7 states have internal predecessors, (35), 0 states have call successors, (0), 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 35 [2024-11-08 19:08:47,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 19:08:47,598 INFO L225 Difference]: With dead ends: 154 [2024-11-08 19:08:47,598 INFO L226 Difference]: Without dead ends: 113 [2024-11-08 19:08:47,599 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-11-08 19:08:47,600 INFO L432 NwaCegarLoop]: 95 mSDtfsCounter, 60 mSDsluCounter, 420 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 515 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 19:08:47,604 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 515 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 19:08:47,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2024-11-08 19:08:47,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 76. [2024-11-08 19:08:47,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 75 states have (on average 1.36) internal successors, (102), 75 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:08:47,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 102 transitions. [2024-11-08 19:08:47,622 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 102 transitions. Word has length 35 [2024-11-08 19:08:47,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 19:08:47,622 INFO L471 AbstractCegarLoop]: Abstraction has 76 states and 102 transitions. [2024-11-08 19:08:47,623 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.0) internal successors, (35), 7 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:08:47,623 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 102 transitions. [2024-11-08 19:08:47,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-08 19:08:47,624 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:08:47,627 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:08:47,628 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-08 19:08:47,628 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 19:08:47,629 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:08:47,629 INFO L85 PathProgramCache]: Analyzing trace with hash 1997204272, now seen corresponding path program 1 times [2024-11-08 19:08:47,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:08:47,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359608063] [2024-11-08 19:08:47,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:08:47,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:08:47,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:08:48,570 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:08:48,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:08:48,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359608063] [2024-11-08 19:08:48,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359608063] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 19:08:48,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 19:08:48,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-08 19:08:48,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175584578] [2024-11-08 19:08:48,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 19:08:48,575 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-08 19:08:48,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:08:48,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-08 19:08:48,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-08 19:08:48,577 INFO L87 Difference]: Start difference. First operand 76 states and 102 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:08:48,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 19:08:48,789 INFO L93 Difference]: Finished difference Result 163 states and 225 transitions. [2024-11-08 19:08:48,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-08 19:08:48,790 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2024-11-08 19:08:48,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 19:08:48,791 INFO L225 Difference]: With dead ends: 163 [2024-11-08 19:08:48,791 INFO L226 Difference]: Without dead ends: 109 [2024-11-08 19:08:48,792 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-08 19:08:48,793 INFO L432 NwaCegarLoop]: 42 mSDtfsCounter, 39 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 19:08:48,793 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 234 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 19:08:48,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2024-11-08 19:08:48,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 102. [2024-11-08 19:08:48,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 101 states have (on average 1.386138613861386) internal successors, (140), 101 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:08:48,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 140 transitions. [2024-11-08 19:08:48,806 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 140 transitions. Word has length 36 [2024-11-08 19:08:48,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 19:08:48,807 INFO L471 AbstractCegarLoop]: Abstraction has 102 states and 140 transitions. [2024-11-08 19:08:48,807 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:08:48,807 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 140 transitions. [2024-11-08 19:08:48,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-08 19:08:48,808 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:08:48,808 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:08:48,809 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-08 19:08:48,809 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 19:08:48,810 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:08:48,810 INFO L85 PathProgramCache]: Analyzing trace with hash 1072579259, now seen corresponding path program 1 times [2024-11-08 19:08:48,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:08:48,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229194335] [2024-11-08 19:08:48,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:08:48,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:08:48,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:08:49,287 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:08:49,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:08:49,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229194335] [2024-11-08 19:08:49,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229194335] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 19:08:49,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 19:08:49,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-08 19:08:49,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816610160] [2024-11-08 19:08:49,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 19:08:49,290 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-08 19:08:49,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:08:49,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-08 19:08:49,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-08 19:08:49,291 INFO L87 Difference]: Start difference. First operand 102 states and 140 transitions. Second operand has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:08:49,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 19:08:49,533 INFO L93 Difference]: Finished difference Result 193 states and 268 transitions. [2024-11-08 19:08:49,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-08 19:08:49,534 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2024-11-08 19:08:49,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 19:08:49,536 INFO L225 Difference]: With dead ends: 193 [2024-11-08 19:08:49,536 INFO L226 Difference]: Without dead ends: 130 [2024-11-08 19:08:49,537 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-11-08 19:08:49,538 INFO L432 NwaCegarLoop]: 49 mSDtfsCounter, 64 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 278 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 19:08:49,538 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 278 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 19:08:49,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2024-11-08 19:08:49,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 116. [2024-11-08 19:08:49,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 115 states have (on average 1.373913043478261) internal successors, (158), 115 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:08:49,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 158 transitions. [2024-11-08 19:08:49,547 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 158 transitions. Word has length 36 [2024-11-08 19:08:49,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 19:08:49,547 INFO L471 AbstractCegarLoop]: Abstraction has 116 states and 158 transitions. [2024-11-08 19:08:49,547 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:08:49,548 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 158 transitions. [2024-11-08 19:08:49,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-08 19:08:49,549 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:08:49,549 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:08:49,549 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-08 19:08:49,550 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 19:08:49,550 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:08:49,550 INFO L85 PathProgramCache]: Analyzing trace with hash -1491106816, now seen corresponding path program 1 times [2024-11-08 19:08:49,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:08:49,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885356625] [2024-11-08 19:08:49,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:08:49,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:08:49,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:08:50,550 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:08:50,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:08:50,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885356625] [2024-11-08 19:08:50,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885356625] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 19:08:50,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 19:08:50,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-08 19:08:50,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609131826] [2024-11-08 19:08:50,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 19:08:50,553 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-08 19:08:50,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:08:50,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-08 19:08:50,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-08 19:08:50,554 INFO L87 Difference]: Start difference. First operand 116 states and 158 transitions. Second operand has 8 states, 8 states have (on average 4.625) internal successors, (37), 8 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:08:50,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 19:08:50,877 INFO L93 Difference]: Finished difference Result 196 states and 268 transitions. [2024-11-08 19:08:50,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-08 19:08:50,878 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 8 states have internal predecessors, (37), 0 states have call successors, (0), 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 37 [2024-11-08 19:08:50,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 19:08:50,879 INFO L225 Difference]: With dead ends: 196 [2024-11-08 19:08:50,879 INFO L226 Difference]: Without dead ends: 142 [2024-11-08 19:08:50,880 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-08 19:08:50,880 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 53 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 191 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-08 19:08:50,881 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 191 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-08 19:08:50,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2024-11-08 19:08:50,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 120. [2024-11-08 19:08:50,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 119 states have (on average 1.3781512605042017) internal successors, (164), 119 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:08:50,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 164 transitions. [2024-11-08 19:08:50,888 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 164 transitions. Word has length 37 [2024-11-08 19:08:50,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 19:08:50,889 INFO L471 AbstractCegarLoop]: Abstraction has 120 states and 164 transitions. [2024-11-08 19:08:50,889 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 8 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:08:50,889 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 164 transitions. [2024-11-08 19:08:50,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-08 19:08:50,890 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:08:50,890 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:08:50,890 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-08 19:08:50,891 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 19:08:50,891 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:08:50,891 INFO L85 PathProgramCache]: Analyzing trace with hash -1953935641, now seen corresponding path program 1 times [2024-11-08 19:08:50,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:08:50,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286448821] [2024-11-08 19:08:50,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:08:50,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:08:50,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:08:51,693 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:08:51,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:08:51,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286448821] [2024-11-08 19:08:51,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286448821] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 19:08:51,694 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 19:08:51,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-08 19:08:51,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034905101] [2024-11-08 19:08:51,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 19:08:51,697 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-08 19:08:51,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:08:51,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-08 19:08:51,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-08 19:08:51,699 INFO L87 Difference]: Start difference. First operand 120 states and 164 transitions. Second operand has 8 states, 8 states have (on average 4.625) internal successors, (37), 8 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:08:52,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 19:08:52,025 INFO L93 Difference]: Finished difference Result 191 states and 262 transitions. [2024-11-08 19:08:52,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-08 19:08:52,026 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 8 states have internal predecessors, (37), 0 states have call successors, (0), 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 37 [2024-11-08 19:08:52,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 19:08:52,027 INFO L225 Difference]: With dead ends: 191 [2024-11-08 19:08:52,028 INFO L226 Difference]: Without dead ends: 124 [2024-11-08 19:08:52,028 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-11-08 19:08:52,029 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 51 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 19:08:52,030 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 222 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 19:08:52,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2024-11-08 19:08:52,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 123. [2024-11-08 19:08:52,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 122 states have (on average 1.3770491803278688) internal successors, (168), 122 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:08:52,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 168 transitions. [2024-11-08 19:08:52,038 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 168 transitions. Word has length 37 [2024-11-08 19:08:52,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 19:08:52,038 INFO L471 AbstractCegarLoop]: Abstraction has 123 states and 168 transitions. [2024-11-08 19:08:52,039 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 8 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:08:52,039 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 168 transitions. [2024-11-08 19:08:52,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-08 19:08:52,040 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:08:52,040 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:08:52,041 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-08 19:08:52,041 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 19:08:52,041 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:08:52,042 INFO L85 PathProgramCache]: Analyzing trace with hash 1739506909, now seen corresponding path program 1 times [2024-11-08 19:08:52,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:08:52,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114804273] [2024-11-08 19:08:52,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:08:52,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:08:52,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:08:52,397 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:08:52,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:08:52,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114804273] [2024-11-08 19:08:52,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114804273] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 19:08:52,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 19:08:52,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 19:08:52,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296177157] [2024-11-08 19:08:52,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 19:08:52,399 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 19:08:52,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:08:52,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 19:08:52,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 19:08:52,400 INFO L87 Difference]: Start difference. First operand 123 states and 168 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:08:52,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 19:08:52,467 INFO L93 Difference]: Finished difference Result 206 states and 281 transitions. [2024-11-08 19:08:52,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 19:08:52,468 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 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 37 [2024-11-08 19:08:52,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 19:08:52,469 INFO L225 Difference]: With dead ends: 206 [2024-11-08 19:08:52,469 INFO L226 Difference]: Without dead ends: 104 [2024-11-08 19:08:52,469 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-08 19:08:52,470 INFO L432 NwaCegarLoop]: 60 mSDtfsCounter, 29 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 19:08:52,470 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 222 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 19:08:52,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2024-11-08 19:08:52,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2024-11-08 19:08:52,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 103 states have (on average 1.3398058252427185) internal successors, (138), 103 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:08:52,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 138 transitions. [2024-11-08 19:08:52,482 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 138 transitions. Word has length 37 [2024-11-08 19:08:52,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 19:08:52,482 INFO L471 AbstractCegarLoop]: Abstraction has 104 states and 138 transitions. [2024-11-08 19:08:52,483 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:08:52,483 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 138 transitions. [2024-11-08 19:08:52,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-08 19:08:52,484 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:08:52,484 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:08:52,484 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-08 19:08:52,484 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 19:08:52,484 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:08:52,485 INFO L85 PathProgramCache]: Analyzing trace with hash -1125018516, now seen corresponding path program 1 times [2024-11-08 19:08:52,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:08:52,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490434003] [2024-11-08 19:08:52,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:08:52,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:08:52,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:08:53,076 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:08:53,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:08:53,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490434003] [2024-11-08 19:08:53,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490434003] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 19:08:53,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 19:08:53,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-08 19:08:53,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895464131] [2024-11-08 19:08:53,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 19:08:53,078 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-08 19:08:53,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:08:53,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-08 19:08:53,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-08 19:08:53,079 INFO L87 Difference]: Start difference. First operand 104 states and 138 transitions. Second operand has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 7 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:08:53,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 19:08:53,215 INFO L93 Difference]: Finished difference Result 198 states and 269 transitions. [2024-11-08 19:08:53,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-08 19:08:53,216 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 7 states have internal predecessors, (38), 0 states have call successors, (0), 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 38 [2024-11-08 19:08:53,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 19:08:53,218 INFO L225 Difference]: With dead ends: 198 [2024-11-08 19:08:53,218 INFO L226 Difference]: Without dead ends: 144 [2024-11-08 19:08:53,219 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-11-08 19:08:53,220 INFO L432 NwaCegarLoop]: 87 mSDtfsCounter, 58 mSDsluCounter, 330 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 417 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 19:08:53,220 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 417 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 19:08:53,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2024-11-08 19:08:53,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 107. [2024-11-08 19:08:53,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 106 states have (on average 1.3396226415094339) internal successors, (142), 106 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:08:53,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 142 transitions. [2024-11-08 19:08:53,230 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 142 transitions. Word has length 38 [2024-11-08 19:08:53,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 19:08:53,230 INFO L471 AbstractCegarLoop]: Abstraction has 107 states and 142 transitions. [2024-11-08 19:08:53,231 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 7 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:08:53,231 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 142 transitions. [2024-11-08 19:08:53,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-08 19:08:53,232 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:08:53,232 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:08:53,232 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-08 19:08:53,233 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 19:08:53,233 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:08:53,233 INFO L85 PathProgramCache]: Analyzing trace with hash -651002010, now seen corresponding path program 1 times [2024-11-08 19:08:53,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:08:53,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157027265] [2024-11-08 19:08:53,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:08:53,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:08:53,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:08:54,199 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:08:54,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:08:54,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157027265] [2024-11-08 19:08:54,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157027265] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 19:08:54,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 19:08:54,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-08 19:08:54,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802190280] [2024-11-08 19:08:54,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 19:08:54,201 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-08 19:08:54,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:08:54,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-08 19:08:54,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-11-08 19:08:54,204 INFO L87 Difference]: Start difference. First operand 107 states and 142 transitions. Second operand has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:08:54,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 19:08:54,502 INFO L93 Difference]: Finished difference Result 165 states and 223 transitions. [2024-11-08 19:08:54,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-08 19:08:54,503 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 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 38 [2024-11-08 19:08:54,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 19:08:54,504 INFO L225 Difference]: With dead ends: 165 [2024-11-08 19:08:54,504 INFO L226 Difference]: Without dead ends: 109 [2024-11-08 19:08:54,505 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-11-08 19:08:54,505 INFO L432 NwaCegarLoop]: 55 mSDtfsCounter, 50 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 251 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 19:08:54,506 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 251 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 19:08:54,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2024-11-08 19:08:54,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2024-11-08 19:08:54,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 108 states have (on average 1.3333333333333333) internal successors, (144), 108 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:08:54,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 144 transitions. [2024-11-08 19:08:54,510 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 144 transitions. Word has length 38 [2024-11-08 19:08:54,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 19:08:54,511 INFO L471 AbstractCegarLoop]: Abstraction has 109 states and 144 transitions. [2024-11-08 19:08:54,512 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:08:54,512 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 144 transitions. [2024-11-08 19:08:54,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-08 19:08:54,516 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:08:54,516 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:08:54,517 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-08 19:08:54,517 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 19:08:54,517 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:08:54,517 INFO L85 PathProgramCache]: Analyzing trace with hash -430589153, now seen corresponding path program 1 times [2024-11-08 19:08:54,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:08:54,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387868647] [2024-11-08 19:08:54,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:08:54,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:08:54,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:08:55,435 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:08:55,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:08:55,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387868647] [2024-11-08 19:08:55,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387868647] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 19:08:55,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 19:08:55,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-08 19:08:55,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476353700] [2024-11-08 19:08:55,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 19:08:55,437 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-08 19:08:55,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:08:55,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-08 19:08:55,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-11-08 19:08:55,438 INFO L87 Difference]: Start difference. First operand 109 states and 144 transitions. Second operand has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 11 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:08:55,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 19:08:55,744 INFO L93 Difference]: Finished difference Result 185 states and 252 transitions. [2024-11-08 19:08:55,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-08 19:08:55,744 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 11 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2024-11-08 19:08:55,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 19:08:55,745 INFO L225 Difference]: With dead ends: 185 [2024-11-08 19:08:55,745 INFO L226 Difference]: Without dead ends: 121 [2024-11-08 19:08:55,746 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2024-11-08 19:08:55,747 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 71 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 306 SdHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 19:08:55,747 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 306 Invalid, 232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 230 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 19:08:55,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2024-11-08 19:08:55,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 117. [2024-11-08 19:08:55,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 116 states have (on average 1.3275862068965518) internal successors, (154), 116 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:08:55,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 154 transitions. [2024-11-08 19:08:55,753 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 154 transitions. Word has length 39 [2024-11-08 19:08:55,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 19:08:55,754 INFO L471 AbstractCegarLoop]: Abstraction has 117 states and 154 transitions. [2024-11-08 19:08:55,754 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 11 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:08:55,755 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 154 transitions. [2024-11-08 19:08:55,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-08 19:08:55,755 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:08:55,756 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:08:55,756 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-08 19:08:55,756 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 19:08:55,756 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:08:55,757 INFO L85 PathProgramCache]: Analyzing trace with hash 657580415, now seen corresponding path program 1 times [2024-11-08 19:08:55,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:08:55,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568353197] [2024-11-08 19:08:55,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:08:55,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:08:55,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:08:56,502 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:08:56,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:08:56,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568353197] [2024-11-08 19:08:56,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568353197] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 19:08:56,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 19:08:56,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-08 19:08:56,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99677837] [2024-11-08 19:08:56,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 19:08:56,504 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-08 19:08:56,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:08:56,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-08 19:08:56,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-08 19:08:56,506 INFO L87 Difference]: Start difference. First operand 117 states and 154 transitions. Second operand has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:08:56,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 19:08:56,816 INFO L93 Difference]: Finished difference Result 185 states and 248 transitions. [2024-11-08 19:08:56,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-08 19:08:56,817 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2024-11-08 19:08:56,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 19:08:56,818 INFO L225 Difference]: With dead ends: 185 [2024-11-08 19:08:56,818 INFO L226 Difference]: Without dead ends: 117 [2024-11-08 19:08:56,819 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2024-11-08 19:08:56,819 INFO L432 NwaCegarLoop]: 52 mSDtfsCounter, 21 mSDsluCounter, 296 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 348 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 19:08:56,820 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 348 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 19:08:56,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2024-11-08 19:08:56,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2024-11-08 19:08:56,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 116 states have (on average 1.3103448275862069) internal successors, (152), 116 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:08:56,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 152 transitions. [2024-11-08 19:08:56,824 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 152 transitions. Word has length 39 [2024-11-08 19:08:56,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 19:08:56,824 INFO L471 AbstractCegarLoop]: Abstraction has 117 states and 152 transitions. [2024-11-08 19:08:56,825 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:08:56,825 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 152 transitions. [2024-11-08 19:08:56,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-08 19:08:56,826 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:08:56,826 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:08:56,826 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-08 19:08:56,826 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 19:08:56,827 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:08:56,827 INFO L85 PathProgramCache]: Analyzing trace with hash 1133402953, now seen corresponding path program 1 times [2024-11-08 19:08:56,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:08:56,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267496850] [2024-11-08 19:08:56,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:08:56,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:08:56,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 19:08:56,944 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-08 19:08:57,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 19:08:57,057 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-08 19:08:57,058 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-08 19:08:57,059 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-08 19:08:57,061 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-08 19:08:57,065 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:08:57,092 WARN L290 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2024-11-08 19:08:57,092 WARN L290 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2024-11-08 19:08:57,101 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-08 19:08:57,104 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.11 07:08:57 BoogieIcfgContainer [2024-11-08 19:08:57,105 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-08 19:08:57,105 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-08 19:08:57,105 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-08 19:08:57,106 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-08 19:08:57,106 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 07:08:43" (3/4) ... [2024-11-08 19:08:57,109 INFO L145 WitnessPrinter]: No result that supports witness generation found [2024-11-08 19:08:57,110 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-08 19:08:57,111 INFO L158 Benchmark]: Toolchain (without parser) took 15568.56ms. Allocated memory was 146.8MB in the beginning and 343.9MB in the end (delta: 197.1MB). Free memory was 103.7MB in the beginning and 301.8MB in the end (delta: -198.1MB). Peak memory consumption was 1.3MB. Max. memory is 16.1GB. [2024-11-08 19:08:57,111 INFO L158 Benchmark]: CDTParser took 0.35ms. Allocated memory is still 146.8MB. Free memory is still 116.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-08 19:08:57,112 INFO L158 Benchmark]: CACSL2BoogieTranslator took 487.57ms. Allocated memory is still 146.8MB. Free memory was 103.7MB in the beginning and 89.0MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-11-08 19:08:57,112 INFO L158 Benchmark]: Boogie Procedure Inliner took 104.49ms. Allocated memory is still 146.8MB. Free memory was 89.0MB in the beginning and 83.9MB in the end (delta: 5.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-08 19:08:57,112 INFO L158 Benchmark]: Boogie Preprocessor took 107.20ms. Allocated memory is still 146.8MB. Free memory was 83.9MB in the beginning and 80.0MB in the end (delta: 3.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-08 19:08:57,113 INFO L158 Benchmark]: RCFGBuilder took 770.49ms. Allocated memory is still 146.8MB. Free memory was 80.0MB in the beginning and 51.2MB in the end (delta: 28.7MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2024-11-08 19:08:57,113 INFO L158 Benchmark]: TraceAbstraction took 14083.43ms. Allocated memory was 146.8MB in the beginning and 343.9MB in the end (delta: 197.1MB). Free memory was 50.6MB in the beginning and 301.8MB in the end (delta: -251.2MB). Peak memory consumption was 141.8MB. Max. memory is 16.1GB. [2024-11-08 19:08:57,113 INFO L158 Benchmark]: Witness Printer took 5.34ms. Allocated memory is still 343.9MB. Free memory is still 301.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-08 19:08:57,115 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35ms. Allocated memory is still 146.8MB. Free memory is still 116.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 487.57ms. Allocated memory is still 146.8MB. Free memory was 103.7MB in the beginning and 89.0MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 104.49ms. Allocated memory is still 146.8MB. Free memory was 89.0MB in the beginning and 83.9MB in the end (delta: 5.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 107.20ms. Allocated memory is still 146.8MB. Free memory was 83.9MB in the beginning and 80.0MB in the end (delta: 3.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 770.49ms. Allocated memory is still 146.8MB. Free memory was 80.0MB in the beginning and 51.2MB in the end (delta: 28.7MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. * TraceAbstraction took 14083.43ms. Allocated memory was 146.8MB in the beginning and 343.9MB in the end (delta: 197.1MB). Free memory was 50.6MB in the beginning and 301.8MB in the end (delta: -251.2MB). Peak memory consumption was 141.8MB. Max. memory is 16.1GB. * Witness Printer took 5.34ms. Allocated memory is still 343.9MB. Free memory is still 301.8MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 21]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: overapproximation of bitwiseAnd at line 115. Possible FailurePath: [L26] const SORT_1 mask_SORT_1 = (SORT_1)-1 >> (sizeof(SORT_1) * 8 - 1); [L27] const SORT_1 msb_SORT_1 = (SORT_1)1 << (1 - 1); [L29] const SORT_3 mask_SORT_3 = (SORT_3)-1 >> (sizeof(SORT_3) * 8 - 3); [L30] const SORT_3 msb_SORT_3 = (SORT_3)1 << (3 - 1); [L32] const SORT_3 var_4 = 0; [L33] const SORT_1 var_13 = 1; [L34] const SORT_3 var_19 = 7; [L35] const SORT_3 var_23 = 1; [L37] SORT_1 input_2; [L39] EXPR __VERIFIER_nondet_uchar() & mask_SORT_3 VAL [mask_SORT_1=1, mask_SORT_3=7, var_13=1, var_19=7, var_23=1, var_4=0] [L39] SORT_3 state_5 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L40] EXPR __VERIFIER_nondet_uchar() & mask_SORT_3 VAL [mask_SORT_1=1, mask_SORT_3=7, var_13=1, var_19=7, var_23=1, var_4=0] [L40] SORT_3 state_7 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L42] SORT_3 init_6_arg_1 = var_4; [L43] state_5 = init_6_arg_1 [L44] SORT_3 init_8_arg_1 = var_4; [L45] state_7 = init_8_arg_1 VAL [mask_SORT_1=1, mask_SORT_3=7, state_5=0, state_7=0, var_13=1, var_19=7, var_23=1] [L48] input_2 = __VERIFIER_nondet_uchar() [L51] SORT_3 var_9_arg_0 = state_5; [L52] SORT_3 var_9_arg_1 = state_7; [L53] SORT_1 var_9 = var_9_arg_0 > var_9_arg_1; [L54] SORT_1 var_10_arg_0 = var_9; [L55] SORT_1 var_10 = ~var_10_arg_0; [L56] SORT_1 var_14_arg_0 = var_10; [L57] SORT_1 var_14 = ~var_14_arg_0; [L58] SORT_1 var_15_arg_0 = var_13; [L59] SORT_1 var_15_arg_1 = var_14; VAL [mask_SORT_1=1, mask_SORT_3=7, state_5=0, state_7=0, var_13=1, var_15_arg_0=1, var_15_arg_1=-256, var_19=7, var_23=1] [L60] EXPR var_15_arg_0 & var_15_arg_1 VAL [mask_SORT_1=1, mask_SORT_3=7, state_5=0, state_7=0, var_13=1, var_19=7, var_23=1] [L60] SORT_1 var_15 = var_15_arg_0 & var_15_arg_1; [L61] EXPR var_15 & mask_SORT_1 VAL [mask_SORT_1=1, mask_SORT_3=7, state_5=0, state_7=0, var_13=1, var_19=7, var_23=1] [L61] var_15 = var_15 & mask_SORT_1 [L62] SORT_1 bad_16_arg_0 = var_15; [L63] CALL __VERIFIER_assert(!(bad_16_arg_0)) [L21] COND FALSE !(!(cond)) [L63] RET __VERIFIER_assert(!(bad_16_arg_0)) [L65] SORT_3 var_25_arg_0 = state_5; [L66] SORT_3 var_25_arg_1 = state_7; [L67] SORT_1 var_25 = var_25_arg_0 == var_25_arg_1; [L68] SORT_3 var_24_arg_0 = state_5; [L69] SORT_3 var_24_arg_1 = var_23; [L70] SORT_3 var_24 = var_24_arg_0 + var_24_arg_1; [L71] SORT_3 var_18_arg_0 = state_5; [L72] SORT_3 var_18_arg_1 = state_7; [L73] SORT_1 var_18 = var_18_arg_0 > var_18_arg_1; [L74] SORT_3 var_20_arg_0 = state_7; [L75] SORT_3 var_20_arg_1 = var_19; [L76] SORT_1 var_20 = var_20_arg_0 != var_20_arg_1; [L77] SORT_1 var_21_arg_0 = var_18; [L78] SORT_1 var_21_arg_1 = var_20; VAL [mask_SORT_1=1, mask_SORT_3=7, state_5=0, state_7=0, var_13=1, var_19=7, var_21_arg_0=0, var_21_arg_1=1, var_23=1, var_24=1, var_25=1] [L79] EXPR var_21_arg_0 | var_21_arg_1 VAL [mask_SORT_1=1, mask_SORT_3=7, state_5=0, state_7=0, var_13=1, var_19=7, var_23=1, var_24=1, var_25=1] [L79] SORT_1 var_21 = var_21_arg_0 | var_21_arg_1; [L80] EXPR var_21 & mask_SORT_1 VAL [mask_SORT_1=1, mask_SORT_3=7, state_5=0, state_7=0, var_13=1, var_19=7, var_23=1, var_24=1, var_25=1] [L80] var_21 = var_21 & mask_SORT_1 [L81] SORT_1 var_22_arg_0 = var_21; [L82] SORT_3 var_22_arg_1 = state_5; [L83] SORT_3 var_22_arg_2 = state_7; [L84] SORT_3 var_22 = var_22_arg_0 ? var_22_arg_1 : var_22_arg_2; [L85] SORT_1 var_26_arg_0 = var_25; [L86] SORT_3 var_26_arg_1 = var_24; [L87] SORT_3 var_26_arg_2 = var_22; [L88] SORT_3 var_26 = var_26_arg_0 ? var_26_arg_1 : var_26_arg_2; VAL [mask_SORT_1=1, mask_SORT_3=7, state_5=0, state_7=0, var_13=1, var_19=7, var_23=1, var_26=1] [L89] EXPR var_26 & mask_SORT_3 VAL [mask_SORT_1=1, mask_SORT_3=7, state_5=0, state_7=0, var_13=1, var_19=7, var_23=1] [L89] var_26 = var_26 & mask_SORT_3 [L90] SORT_3 next_27_arg_1 = var_26; [L91] SORT_3 var_33_arg_0 = state_5; [L92] SORT_3 var_33_arg_1 = state_7; [L93] SORT_1 var_33 = var_33_arg_0 > var_33_arg_1; [L94] SORT_3 var_29_arg_0 = state_5; [L95] SORT_3 var_29_arg_1 = state_7; [L96] SORT_1 var_29 = var_29_arg_0 == var_29_arg_1; [L97] SORT_3 var_30_arg_0 = state_7; [L98] SORT_3 var_30_arg_1 = var_19; [L99] SORT_1 var_30 = var_30_arg_0 != var_30_arg_1; [L100] SORT_1 var_31_arg_0 = var_29; [L101] SORT_1 var_31_arg_1 = var_30; VAL [mask_SORT_1=1, mask_SORT_3=7, next_27_arg_1=1, state_5=0, state_7=0, var_13=1, var_19=7, var_23=1, var_31_arg_0=1, var_31_arg_1=1, var_33=0] [L102] EXPR var_31_arg_0 | var_31_arg_1 VAL [mask_SORT_1=1, mask_SORT_3=7, next_27_arg_1=1, state_5=0, state_7=0, var_13=1, var_19=7, var_23=1, var_33=0] [L102] SORT_1 var_31 = var_31_arg_0 | var_31_arg_1; [L103] EXPR var_31 & mask_SORT_1 VAL [mask_SORT_1=1, mask_SORT_3=7, next_27_arg_1=1, state_5=0, state_7=0, var_13=1, var_19=7, var_23=1, var_33=0] [L103] var_31 = var_31 & mask_SORT_1 [L104] SORT_3 var_28_arg_0 = state_7; [L105] SORT_3 var_28_arg_1 = var_23; [L106] SORT_3 var_28 = var_28_arg_0 + var_28_arg_1; [L107] SORT_1 var_32_arg_0 = var_31; [L108] SORT_3 var_32_arg_1 = var_28; [L109] SORT_3 var_32_arg_2 = state_5; [L110] SORT_3 var_32 = var_32_arg_0 ? var_32_arg_1 : var_32_arg_2; [L111] SORT_1 var_34_arg_0 = var_33; [L112] SORT_3 var_34_arg_1 = state_7; [L113] SORT_3 var_34_arg_2 = var_32; [L114] SORT_3 var_34 = var_34_arg_0 ? var_34_arg_1 : var_34_arg_2; VAL [mask_SORT_1=1, mask_SORT_3=7, next_27_arg_1=1, var_13=1, var_19=7, var_23=1, var_34=1] [L115] EXPR var_34 & mask_SORT_3 VAL [mask_SORT_1=1, mask_SORT_3=7, next_27_arg_1=1, var_13=1, var_19=7, var_23=1] [L115] var_34 = var_34 & mask_SORT_3 [L116] SORT_3 next_35_arg_1 = var_34; [L118] state_5 = next_27_arg_1 [L119] state_7 = next_35_arg_1 [L48] input_2 = __VERIFIER_nondet_uchar() [L51] SORT_3 var_9_arg_0 = state_5; [L52] SORT_3 var_9_arg_1 = state_7; [L53] SORT_1 var_9 = var_9_arg_0 > var_9_arg_1; [L54] SORT_1 var_10_arg_0 = var_9; [L55] SORT_1 var_10 = ~var_10_arg_0; [L56] SORT_1 var_14_arg_0 = var_10; [L57] SORT_1 var_14 = ~var_14_arg_0; [L58] SORT_1 var_15_arg_0 = var_13; [L59] SORT_1 var_15_arg_1 = var_14; VAL [mask_SORT_1=1, mask_SORT_3=7, state_5=1, state_7=0, var_13=1, var_15_arg_0=1, var_15_arg_1=-255, var_19=7, var_23=1] [L60] EXPR var_15_arg_0 & var_15_arg_1 VAL [mask_SORT_1=1, mask_SORT_3=7, state_5=1, state_7=0, var_13=1, var_19=7, var_23=1] [L60] SORT_1 var_15 = var_15_arg_0 & var_15_arg_1; [L61] EXPR var_15 & mask_SORT_1 VAL [mask_SORT_1=1, mask_SORT_3=7, state_5=1, state_7=0, var_13=1, var_19=7, var_23=1] [L61] var_15 = var_15 & mask_SORT_1 [L62] SORT_1 bad_16_arg_0 = var_15; [L63] CALL __VERIFIER_assert(!(bad_16_arg_0)) [L21] COND TRUE !(cond) [L21] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 51 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 13.9s, OverallIterations: 15, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 3.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 583 SdHoareTripleChecker+Valid, 2.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 583 mSDsluCounter, 3813 SdHoareTripleChecker+Invalid, 1.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3020 mSDsCounter, 16 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1666 IncrementalHoareTripleChecker+Invalid, 1682 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 16 mSolverCounterUnsat, 793 mSDtfsCounter, 1666 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 181 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 1.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=123occurred in iteration=9, InterpolantAutomatonStates: 104, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 14 MinimizatonAttempts, 165 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 8.5s InterpolantComputationTime, 522 NumberOfCodeBlocks, 522 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 467 ConstructedInterpolants, 0 QuantifiedInterpolants, 2639 SizeOfPredicates, 3 NumberOfNonLiveVariables, 253 ConjunctsInSsa, 30 ConjunctsInUnsatCore, 15 InterpolantComputations, 14 PerfectInterpolantSequences, 68/72 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2024-11-08 19:08:57,149 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b074a510-5cb8-4783-be92-024dadbdf25f/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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_b074a510-5cb8-4783-be92-024dadbdf25f/bin/uautomizer-verify-jihMAELWvX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b074a510-5cb8-4783-be92-024dadbdf25f/bin/uautomizer-verify-jihMAELWvX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b074a510-5cb8-4783-be92-024dadbdf25f/bin/uautomizer-verify-jihMAELWvX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b074a510-5cb8-4783-be92-024dadbdf25f/bin/uautomizer-verify-jihMAELWvX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cav14_example.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b074a510-5cb8-4783-be92-024dadbdf25f/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Reach-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b074a510-5cb8-4783-be92-024dadbdf25f/bin/uautomizer-verify-jihMAELWvX --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 da271682498909c2f25abbd0acdfd9a043f664f7a7cb078f9b27fc5caa97b14c --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-08 19:08:59,948 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 19:09:00,055 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b074a510-5cb8-4783-be92-024dadbdf25f/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2024-11-08 19:09:00,062 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 19:09:00,063 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 19:09:00,110 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 19:09:00,111 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 19:09:00,111 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 19:09:00,112 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 19:09:00,114 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 19:09:00,115 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 19:09:00,116 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 19:09:00,117 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 19:09:00,121 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 19:09:00,121 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 19:09:00,122 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 19:09:00,122 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 19:09:00,123 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 19:09:00,123 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 19:09:00,123 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 19:09:00,124 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 19:09:00,124 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-08 19:09:00,124 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-08 19:09:00,125 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 19:09:00,125 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-08 19:09:00,125 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 19:09:00,126 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 19:09:00,126 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 19:09:00,126 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 19:09:00,126 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 19:09:00,128 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 19:09:00,129 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 19:09:00,130 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 19:09:00,130 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 19:09:00,130 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 19:09:00,131 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2024-11-08 19:09:00,131 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-08 19:09:00,131 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 19:09:00,132 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 19:09:00,133 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 19:09:00,133 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 19:09:00,133 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_b074a510-5cb8-4783-be92-024dadbdf25f/bin/uautomizer-verify-jihMAELWvX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b074a510-5cb8-4783-be92-024dadbdf25f/bin/uautomizer-verify-jihMAELWvX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> da271682498909c2f25abbd0acdfd9a043f664f7a7cb078f9b27fc5caa97b14c [2024-11-08 19:09:00,530 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 19:09:00,561 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 19:09:00,564 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 19:09:00,566 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 19:09:00,566 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 19:09:00,568 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b074a510-5cb8-4783-be92-024dadbdf25f/bin/uautomizer-verify-jihMAELWvX/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cav14_example.c Unable to find full path for "g++" [2024-11-08 19:09:02,998 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 19:09:03,243 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 19:09:03,244 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b074a510-5cb8-4783-be92-024dadbdf25f/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cav14_example.c [2024-11-08 19:09:03,254 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b074a510-5cb8-4783-be92-024dadbdf25f/bin/uautomizer-verify-jihMAELWvX/data/0b12fee20/0766d1267f5d4232858e35d99b22eca1/FLAGa943a5d12 [2024-11-08 19:09:03,607 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b074a510-5cb8-4783-be92-024dadbdf25f/bin/uautomizer-verify-jihMAELWvX/data/0b12fee20/0766d1267f5d4232858e35d99b22eca1 [2024-11-08 19:09:03,610 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 19:09:03,612 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 19:09:03,614 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 19:09:03,614 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 19:09:03,622 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 19:09:03,623 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 07:09:03" (1/1) ... [2024-11-08 19:09:03,624 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4cb65f2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:09:03, skipping insertion in model container [2024-11-08 19:09:03,625 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 07:09:03" (1/1) ... [2024-11-08 19:09:03,657 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 19:09:03,902 WARN L250 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_b074a510-5cb8-4783-be92-024dadbdf25f/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cav14_example.c[1253,1266] [2024-11-08 19:09:03,962 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 19:09:03,987 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 19:09:04,007 WARN L250 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_b074a510-5cb8-4783-be92-024dadbdf25f/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cav14_example.c[1253,1266] [2024-11-08 19:09:04,071 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 19:09:04,100 INFO L204 MainTranslator]: Completed translation [2024-11-08 19:09:04,101 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:09:04 WrapperNode [2024-11-08 19:09:04,102 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 19:09:04,104 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 19:09:04,106 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 19:09:04,106 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 19:09:04,115 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:09:04" (1/1) ... [2024-11-08 19:09:04,130 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:09:04" (1/1) ... [2024-11-08 19:09:04,170 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 109 [2024-11-08 19:09:04,170 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 19:09:04,174 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 19:09:04,175 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 19:09:04,175 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 19:09:04,191 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:09:04" (1/1) ... [2024-11-08 19:09:04,191 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:09:04" (1/1) ... [2024-11-08 19:09:04,199 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:09:04" (1/1) ... [2024-11-08 19:09:04,228 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]. [2024-11-08 19:09:04,229 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:09:04" (1/1) ... [2024-11-08 19:09:04,229 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:09:04" (1/1) ... [2024-11-08 19:09:04,242 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:09:04" (1/1) ... [2024-11-08 19:09:04,250 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:09:04" (1/1) ... [2024-11-08 19:09:04,252 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:09:04" (1/1) ... [2024-11-08 19:09:04,258 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:09:04" (1/1) ... [2024-11-08 19:09:04,260 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 19:09:04,265 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 19:09:04,266 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 19:09:04,266 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 19:09:04,267 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:09:04" (1/1) ... [2024-11-08 19:09:04,275 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 19:09:04,292 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b074a510-5cb8-4783-be92-024dadbdf25f/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 19:09:04,311 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b074a510-5cb8-4783-be92-024dadbdf25f/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-08 19:09:04,323 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b074a510-5cb8-4783-be92-024dadbdf25f/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-08 19:09:04,361 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 19:09:04,361 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-08 19:09:04,361 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 19:09:04,362 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 19:09:04,501 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 19:09:04,503 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 19:09:04,762 INFO L? ?]: Removed 21 outVars from TransFormulas that were not future-live. [2024-11-08 19:09:04,762 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 19:09:04,775 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 19:09:04,776 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-08 19:09:04,776 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 07:09:04 BoogieIcfgContainer [2024-11-08 19:09:04,777 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 19:09:04,779 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 19:09:04,780 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 19:09:04,788 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 19:09:04,788 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 07:09:03" (1/3) ... [2024-11-08 19:09:04,789 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e53b23c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 07:09:04, skipping insertion in model container [2024-11-08 19:09:04,789 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:09:04" (2/3) ... [2024-11-08 19:09:04,790 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e53b23c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 07:09:04, skipping insertion in model container [2024-11-08 19:09:04,793 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 07:09:04" (3/3) ... [2024-11-08 19:09:04,799 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.cav14_example.c [2024-11-08 19:09:04,826 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 19:09:04,826 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-08 19:09:04,900 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 19:09:04,909 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;@f737642, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 19:09:04,909 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-08 19:09:04,915 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:09:04,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-11-08 19:09:04,922 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:09:04,923 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-11-08 19:09:04,924 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 19:09:04,930 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:09:04,931 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2024-11-08 19:09:04,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 19:09:04,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1917721598] [2024-11-08 19:09:04,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:09:04,947 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:09:04,948 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b074a510-5cb8-4783-be92-024dadbdf25f/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 19:09:04,950 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b074a510-5cb8-4783-be92-024dadbdf25f/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 19:09:04,952 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b074a510-5cb8-4783-be92-024dadbdf25f/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-08 19:09:05,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:09:05,107 INFO L255 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-08 19:09:05,119 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 19:09:05,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:09:05,487 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 19:09:05,488 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 19:09:05,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1917721598] [2024-11-08 19:09:05,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1917721598] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 19:09:05,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 19:09:05,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 19:09:05,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671106091] [2024-11-08 19:09:05,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 19:09:05,499 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 19:09:05,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 19:09:05,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 19:09:05,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 19:09:05,535 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 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 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:09:05,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 19:09:05,599 INFO L93 Difference]: Finished difference Result 19 states and 27 transitions. [2024-11-08 19:09:05,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 19:09:05,602 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 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 5 [2024-11-08 19:09:05,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 19:09:05,612 INFO L225 Difference]: With dead ends: 19 [2024-11-08 19:09:05,612 INFO L226 Difference]: Without dead ends: 10 [2024-11-08 19:09:05,615 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-08 19:09:05,622 INFO L432 NwaCegarLoop]: 4 mSDtfsCounter, 2 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 19:09:05,624 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 11 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 19:09:05,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2024-11-08 19:09:05,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9. [2024-11-08 19:09:05,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:09:05,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2024-11-08 19:09:05,662 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2024-11-08 19:09:05,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 19:09:05,663 INFO L471 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2024-11-08 19:09:05,663 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:09:05,664 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2024-11-08 19:09:05,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-08 19:09:05,665 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:09:05,665 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2024-11-08 19:09:05,690 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b074a510-5cb8-4783-be92-024dadbdf25f/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-08 19:09:05,869 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b074a510-5cb8-4783-be92-024dadbdf25f/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:09:05,870 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 19:09:05,871 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:09:05,871 INFO L85 PathProgramCache]: Analyzing trace with hash 271073635, now seen corresponding path program 1 times [2024-11-08 19:09:05,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 19:09:05,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1650824240] [2024-11-08 19:09:05,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:09:05,872 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:09:05,872 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b074a510-5cb8-4783-be92-024dadbdf25f/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 19:09:05,875 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b074a510-5cb8-4783-be92-024dadbdf25f/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 19:09:05,877 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b074a510-5cb8-4783-be92-024dadbdf25f/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-08 19:09:05,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:09:05,995 INFO L255 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-08 19:09:06,002 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 19:09:06,452 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:09:06,453 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 19:09:09,052 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:09:09,054 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 19:09:09,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1650824240] [2024-11-08 19:09:09,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1650824240] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 19:09:09,055 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-08 19:09:09,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2024-11-08 19:09:09,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711120798] [2024-11-08 19:09:09,056 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-08 19:09:09,059 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-08 19:09:09,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 19:09:09,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-08 19:09:09,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-11-08 19:09:09,061 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 10 states, 10 states have (on average 1.4) internal successors, (14), 10 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:09:09,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 19:09:09,478 INFO L93 Difference]: Finished difference Result 21 states and 23 transitions. [2024-11-08 19:09:09,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-08 19:09:09,479 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.4) internal successors, (14), 10 states have internal predecessors, (14), 0 states have call successors, (0), 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 8 [2024-11-08 19:09:09,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 19:09:09,480 INFO L225 Difference]: With dead ends: 21 [2024-11-08 19:09:09,480 INFO L226 Difference]: Without dead ends: 19 [2024-11-08 19:09:09,481 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2024-11-08 19:09:09,483 INFO L432 NwaCegarLoop]: 4 mSDtfsCounter, 9 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 19:09:09,483 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 19 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 19:09:09,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2024-11-08 19:09:09,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 18. [2024-11-08 19:09:09,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.0588235294117647) internal successors, (18), 17 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:09:09,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2024-11-08 19:09:09,490 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 8 [2024-11-08 19:09:09,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 19:09:09,491 INFO L471 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2024-11-08 19:09:09,491 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.4) internal successors, (14), 10 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:09:09,491 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2024-11-08 19:09:09,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-08 19:09:09,492 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:09:09,492 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1] [2024-11-08 19:09:09,519 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b074a510-5cb8-4783-be92-024dadbdf25f/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-08 19:09:09,693 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b074a510-5cb8-4783-be92-024dadbdf25f/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:09:09,693 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 19:09:09,694 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:09:09,694 INFO L85 PathProgramCache]: Analyzing trace with hash -1250702327, now seen corresponding path program 2 times [2024-11-08 19:09:09,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 19:09:09,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1034480078] [2024-11-08 19:09:09,696 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 19:09:09,696 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:09:09,696 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b074a510-5cb8-4783-be92-024dadbdf25f/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 19:09:09,698 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b074a510-5cb8-4783-be92-024dadbdf25f/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 19:09:09,700 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b074a510-5cb8-4783-be92-024dadbdf25f/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-08 19:09:09,848 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 19:09:09,849 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 19:09:09,852 INFO L255 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-08 19:09:09,859 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 19:09:10,507 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:09:10,508 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 19:09:27,178 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:09:27,178 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 19:09:27,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1034480078] [2024-11-08 19:09:27,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1034480078] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 19:09:27,179 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-08 19:09:27,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2024-11-08 19:09:27,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430503602] [2024-11-08 19:09:27,180 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-08 19:09:27,181 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-08 19:09:27,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 19:09:27,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-08 19:09:27,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2024-11-08 19:09:27,183 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 14 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:09:29,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 19:09:29,984 INFO L93 Difference]: Finished difference Result 39 states and 44 transitions. [2024-11-08 19:09:29,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-08 19:09:29,985 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 14 states have internal predecessors, (32), 0 states have call successors, (0), 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 17 [2024-11-08 19:09:29,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 19:09:29,987 INFO L225 Difference]: With dead ends: 39 [2024-11-08 19:09:29,987 INFO L226 Difference]: Without dead ends: 37 [2024-11-08 19:09:29,988 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=255, Invalid=501, Unknown=0, NotChecked=0, Total=756 [2024-11-08 19:09:29,989 INFO L432 NwaCegarLoop]: 4 mSDtfsCounter, 14 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-08 19:09:29,990 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 17 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-08 19:09:29,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2024-11-08 19:09:30,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 36. [2024-11-08 19:09:30,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.0285714285714285) internal successors, (36), 35 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:09:30,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 36 transitions. [2024-11-08 19:09:30,006 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 36 transitions. Word has length 17 [2024-11-08 19:09:30,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 19:09:30,007 INFO L471 AbstractCegarLoop]: Abstraction has 36 states and 36 transitions. [2024-11-08 19:09:30,007 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 14 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:09:30,007 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 36 transitions. [2024-11-08 19:09:30,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-08 19:09:30,008 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:09:30,009 INFO L215 NwaCegarLoop]: trace histogram [11, 10, 10, 1, 1, 1, 1] [2024-11-08 19:09:30,028 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b074a510-5cb8-4783-be92-024dadbdf25f/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-08 19:09:30,209 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b074a510-5cb8-4783-be92-024dadbdf25f/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:09:30,210 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 19:09:30,211 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:09:30,211 INFO L85 PathProgramCache]: Analyzing trace with hash 282806601, now seen corresponding path program 3 times [2024-11-08 19:09:30,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 19:09:30,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1616720001] [2024-11-08 19:09:30,213 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-08 19:09:30,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:09:30,214 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b074a510-5cb8-4783-be92-024dadbdf25f/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 19:09:30,216 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b074a510-5cb8-4783-be92-024dadbdf25f/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 19:09:30,218 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b074a510-5cb8-4783-be92-024dadbdf25f/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-08 19:09:30,545 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-11-08 19:09:30,545 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 19:09:30,551 INFO L255 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 71 conjuncts are in the unsatisfiable core [2024-11-08 19:09:30,574 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 19:09:32,041 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 19:09:32,041 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 19:12:37,167 WARN L286 SmtUtils]: Spent 5.96s on a formula simplification. DAG size of input: 978 DAG size of output: 777 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-08 19:12:54,446 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 0 proven. 155 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:12:54,447 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 19:12:54,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1616720001] [2024-11-08 19:12:54,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1616720001] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 19:12:54,449 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-08 19:12:54,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 18] total 32 [2024-11-08 19:12:54,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753559755] [2024-11-08 19:12:54,452 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-08 19:12:54,453 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-08 19:12:54,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 19:12:54,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-08 19:12:54,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=271, Invalid=721, Unknown=0, NotChecked=0, Total=992 [2024-11-08 19:12:54,464 INFO L87 Difference]: Start difference. First operand 36 states and 36 transitions. Second operand has 32 states, 32 states have (on average 2.125) internal successors, (68), 32 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:12:55,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 19:12:55,122 INFO L93 Difference]: Finished difference Result 57 states and 64 transitions. [2024-11-08 19:12:55,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-08 19:12:55,123 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.125) internal successors, (68), 32 states have internal predecessors, (68), 0 states have call successors, (0), 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 35 [2024-11-08 19:12:55,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 19:12:55,124 INFO L225 Difference]: With dead ends: 57 [2024-11-08 19:12:55,124 INFO L226 Difference]: Without dead ends: 0 [2024-11-08 19:12:55,125 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 28.9s TimeCoverageRelationStatistics Valid=415, Invalid=1067, Unknown=0, NotChecked=0, Total=1482 [2024-11-08 19:12:55,126 INFO L432 NwaCegarLoop]: 2 mSDtfsCounter, 0 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 267 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-08 19:12:55,127 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 21 Invalid, 272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 267 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-08 19:12:55,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-08 19:12:55,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-08 19:12:55,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:12:55,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-08 19:12:55,129 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 35 [2024-11-08 19:12:55,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 19:12:55,129 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-08 19:12:55,129 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.125) internal successors, (68), 32 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:12:55,130 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-08 19:12:55,130 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-08 19:12:55,133 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-08 19:12:55,150 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b074a510-5cb8-4783-be92-024dadbdf25f/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-08 19:12:55,334 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b074a510-5cb8-4783-be92-024dadbdf25f/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:12:55,337 INFO L407 BasicCegarLoop]: Path program histogram: [3, 1] [2024-11-08 19:12:55,339 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-08 19:12:55,529 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-08 19:12:55,552 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.11 07:12:55 BoogieIcfgContainer [2024-11-08 19:12:55,552 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-08 19:12:55,553 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-08 19:12:55,553 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-08 19:12:55,554 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-08 19:12:55,554 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 07:09:04" (3/4) ... [2024-11-08 19:12:55,557 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-08 19:12:55,569 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2024-11-08 19:12:55,569 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-11-08 19:12:55,570 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-08 19:12:55,570 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-08 19:12:55,619 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.witnessprinter has thrown an exception: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSLBacktranslationValueProvider.getStringFromIASTNode(CACSLBacktranslationValueProvider.java:80) at de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSLBacktranslationValueProvider.getStringFromStep(CACSLBacktranslationValueProvider.java:61) at de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSLBacktranslationValueProvider.getStringFromStep(CACSLBacktranslationValueProvider.java:1) at de.uni_freiburg.informatik.ultimate.witnessprinter.graphml.GeneratedWitnessEdge.getSourceCode(GeneratedWitnessEdge.java:156) at de.uni_freiburg.informatik.ultimate.witnessprinter.graphml.GraphMLCorrectnessWitnessGenerator.lambda$2(GraphMLCorrectnessWitnessGenerator.java:91) at edu.uci.ics.jung.io.GraphMLWriter.writeEdgeData(GraphMLWriter.java:237) at de.uni_freiburg.informatik.ultimate.witnessprinter.graphml.UltimateGraphMLWriter.save(UltimateGraphMLWriter.java:106) at de.uni_freiburg.informatik.ultimate.witnessprinter.graphml.GraphMLCorrectnessWitnessGenerator.makeGraphMLString(GraphMLCorrectnessWitnessGenerator.java:111) at de.uni_freiburg.informatik.ultimate.witnessprinter.WitnessPrinter.generateProofWitness(WitnessPrinter.java:168) at de.uni_freiburg.informatik.ultimate.witnessprinter.WitnessPrinter.finish(WitnessPrinter.java:143) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:130) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-08 19:12:55,626 INFO L158 Benchmark]: Toolchain (without parser) took 232013.96ms. Allocated memory was 60.8MB in the beginning and 1.7GB in the end (delta: 1.6GB). Free memory was 30.4MB in the beginning and 998.6MB in the end (delta: -968.1MB). Peak memory consumption was 663.4MB. Max. memory is 16.1GB. [2024-11-08 19:12:55,626 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 60.8MB. Free memory was 37.0MB in the beginning and 36.9MB in the end (delta: 81.6kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-08 19:12:55,627 INFO L158 Benchmark]: CACSL2BoogieTranslator took 488.49ms. Allocated memory was 60.8MB in the beginning and 81.8MB in the end (delta: 21.0MB). Free memory was 30.3MB in the beginning and 51.6MB in the end (delta: -21.3MB). Peak memory consumption was 7.5MB. Max. memory is 16.1GB. [2024-11-08 19:12:55,627 INFO L158 Benchmark]: Boogie Procedure Inliner took 69.28ms. Allocated memory is still 81.8MB. Free memory was 51.6MB in the beginning and 49.7MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-08 19:12:55,627 INFO L158 Benchmark]: Boogie Preprocessor took 89.71ms. Allocated memory is still 81.8MB. Free memory was 49.7MB in the beginning and 47.1MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-08 19:12:55,628 INFO L158 Benchmark]: RCFGBuilder took 512.05ms. Allocated memory is still 81.8MB. Free memory was 47.1MB in the beginning and 52.6MB in the end (delta: -5.5MB). Peak memory consumption was 12.2MB. Max. memory is 16.1GB. [2024-11-08 19:12:55,628 INFO L158 Benchmark]: TraceAbstraction took 230772.90ms. Allocated memory was 81.8MB in the beginning and 1.7GB in the end (delta: 1.6GB). Free memory was 51.8MB in the beginning and 1.0GB in the end (delta: -949.9MB). Peak memory consumption was 660.5MB. Max. memory is 16.1GB. [2024-11-08 19:12:55,629 INFO L158 Benchmark]: Witness Printer took 72.16ms. Allocated memory is still 1.7GB. Free memory was 1.0GB in the beginning and 998.6MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-08 19:12:55,631 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 60.8MB. Free memory was 37.0MB in the beginning and 36.9MB in the end (delta: 81.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 488.49ms. Allocated memory was 60.8MB in the beginning and 81.8MB in the end (delta: 21.0MB). Free memory was 30.3MB in the beginning and 51.6MB in the end (delta: -21.3MB). Peak memory consumption was 7.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 69.28ms. Allocated memory is still 81.8MB. Free memory was 51.6MB in the beginning and 49.7MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 89.71ms. Allocated memory is still 81.8MB. Free memory was 49.7MB in the beginning and 47.1MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 512.05ms. Allocated memory is still 81.8MB. Free memory was 47.1MB in the beginning and 52.6MB in the end (delta: -5.5MB). Peak memory consumption was 12.2MB. Max. memory is 16.1GB. * TraceAbstraction took 230772.90ms. Allocated memory was 81.8MB in the beginning and 1.7GB in the end (delta: 1.6GB). Free memory was 51.8MB in the beginning and 1.0GB in the end (delta: -949.9MB). Peak memory consumption was 660.5MB. Max. memory is 16.1GB. * Witness Printer took 72.16ms. Allocated memory is still 1.7GB. Free memory was 1.0GB in the beginning and 998.6MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 21]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 230.5s, OverallIterations: 4, TraceHistogramMax: 11, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 4.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 25 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 25 mSDsluCounter, 68 SdHoareTripleChecker+Invalid, 0.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 54 mSDsCounter, 20 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 416 IncrementalHoareTripleChecker+Invalid, 436 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 20 mSolverCounterUnsat, 14 mSDtfsCounter, 416 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 145 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 287 ImplicationChecksByTransitivity, 34.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=36occurred in iteration=3, InterpolantAutomatonStates: 54, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 3 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 224.7s InterpolantComputationTime, 65 NumberOfCodeBlocks, 65 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 118 ConstructedInterpolants, 48 QuantifiedInterpolants, 192172 SizeOfPredicates, 23 NumberOfNonLiveVariables, 396 ConjunctsInSsa, 142 ConjunctsInUnsatCore, 7 InterpolantComputations, 1 PerfectInterpolantSequences, 1/366 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 46]: Loop Invariant Derived loop invariant: ((((((((((((((7 == var_19) && (3 == state_7)) && (7 == mask_SORT_3)) && (1 == var_23)) && (1 == var_13)) && (1 == mask_SORT_1)) && (3 == state_5)) || (((((((7 == state_5) && (7 == var_19)) && (7 == mask_SORT_3)) && (1 == var_23)) && (1 == var_13)) && (7 == state_7)) && (1 == mask_SORT_1))) || (((((((7 == var_19) && (7 == mask_SORT_3)) && (6 == state_5)) && (1 == var_23)) && (1 == var_13)) && (1 == mask_SORT_1)) && (6 == state_7))) || (((((((0 == state_7) && (7 == var_19)) && (7 == mask_SORT_3)) && (0 == state_5)) && (1 == var_23)) && (1 == var_13)) && (1 == mask_SORT_1))) || (((((((7 == var_19) && (7 == mask_SORT_3)) && (2 == state_5)) && (1 == var_23)) && (2 == state_7)) && (1 == var_13)) && (1 == mask_SORT_1))) || (((((((7 == var_19) && (7 == mask_SORT_3)) && (1 == var_23)) && (1 == var_13)) && (1 == state_7)) && (1 == mask_SORT_1)) && (1 == state_5))) || (((((((7 == var_19) && (7 == mask_SORT_3)) && (5 == state_7)) && (1 == var_23)) && (1 == var_13)) && (5 == state_5)) && (1 == mask_SORT_1))) || (((((((4 == state_5) && (7 == var_19)) && (7 == mask_SORT_3)) && (1 == var_23)) && (1 == var_13)) && (4 == state_7)) && (1 == mask_SORT_1))) * Results from de.uni_freiburg.informatik.ultimate.witnessprinter: - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.witnessprinter: NullPointerException: null: de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSLBacktranslationValueProvider.getStringFromIASTNode(CACSLBacktranslationValueProvider.java:80) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2024-11-08 19:12:55,774 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b074a510-5cb8-4783-be92-024dadbdf25f/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: NullPointerException: null