./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/bitvector/num_conversion_2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4fc63b2a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00be407e-773f-4f0e-932f-60276e2476e2/bin/uautomizer-verify-4GaUIPS5ZU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00be407e-773f-4f0e-932f-60276e2476e2/bin/uautomizer-verify-4GaUIPS5ZU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00be407e-773f-4f0e-932f-60276e2476e2/bin/uautomizer-verify-4GaUIPS5ZU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00be407e-773f-4f0e-932f-60276e2476e2/bin/uautomizer-verify-4GaUIPS5ZU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/bitvector/num_conversion_2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00be407e-773f-4f0e-932f-60276e2476e2/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00be407e-773f-4f0e-932f-60276e2476e2/bin/uautomizer-verify-4GaUIPS5ZU --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7e0da033eb6b5a3b4db0394198751cf880534ee28b64f0bd7b196bfba1d785e1 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-10-31 22:09:09,180 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-31 22:09:09,276 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00be407e-773f-4f0e-932f-60276e2476e2/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-31 22:09:09,288 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-31 22:09:09,288 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-31 22:09:09,326 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-31 22:09:09,327 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-31 22:09:09,328 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-31 22:09:09,328 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-31 22:09:09,330 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-31 22:09:09,330 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-31 22:09:09,331 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-31 22:09:09,331 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-31 22:09:09,332 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-31 22:09:09,334 INFO L153 SettingsManager]: * Use SBE=true [2024-10-31 22:09:09,335 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-31 22:09:09,335 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-31 22:09:09,335 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-31 22:09:09,336 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-31 22:09:09,336 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-31 22:09:09,337 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-31 22:09:09,341 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-31 22:09:09,341 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-31 22:09:09,342 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-31 22:09:09,342 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-31 22:09:09,342 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-31 22:09:09,342 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-31 22:09:09,343 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-31 22:09:09,343 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-31 22:09:09,344 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-31 22:09:09,344 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-31 22:09:09,344 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-31 22:09:09,344 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:09:09,345 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-31 22:09:09,345 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-31 22:09:09,345 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-31 22:09:09,345 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-31 22:09:09,346 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-31 22:09:09,346 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-31 22:09:09,346 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-31 22:09:09,346 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-31 22:09:09,348 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-31 22:09:09,349 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_00be407e-773f-4f0e-932f-60276e2476e2/bin/uautomizer-verify-4GaUIPS5ZU/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00be407e-773f-4f0e-932f-60276e2476e2/bin/uautomizer-verify-4GaUIPS5ZU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7e0da033eb6b5a3b4db0394198751cf880534ee28b64f0bd7b196bfba1d785e1 [2024-10-31 22:09:09,621 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-31 22:09:09,652 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-31 22:09:09,655 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-31 22:09:09,657 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-31 22:09:09,657 INFO L274 PluginConnector]: CDTParser initialized [2024-10-31 22:09:09,659 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00be407e-773f-4f0e-932f-60276e2476e2/bin/uautomizer-verify-4GaUIPS5ZU/../../sv-benchmarks/c/bitvector/num_conversion_2.c Unable to find full path for "g++" [2024-10-31 22:09:11,812 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-31 22:09:12,018 INFO L384 CDTParser]: Found 1 translation units. [2024-10-31 22:09:12,019 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00be407e-773f-4f0e-932f-60276e2476e2/sv-benchmarks/c/bitvector/num_conversion_2.c [2024-10-31 22:09:12,026 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00be407e-773f-4f0e-932f-60276e2476e2/bin/uautomizer-verify-4GaUIPS5ZU/data/4f0855641/24755e0b53074cc8a66059c30cdd75d1/FLAGafe8d246c [2024-10-31 22:09:12,040 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00be407e-773f-4f0e-932f-60276e2476e2/bin/uautomizer-verify-4GaUIPS5ZU/data/4f0855641/24755e0b53074cc8a66059c30cdd75d1 [2024-10-31 22:09:12,042 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-31 22:09:12,044 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-31 22:09:12,046 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-31 22:09:12,046 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-31 22:09:12,052 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-31 22:09:12,053 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:09:12" (1/1) ... [2024-10-31 22:09:12,054 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@fff0338 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:09:12, skipping insertion in model container [2024-10-31 22:09:12,055 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:09:12" (1/1) ... [2024-10-31 22:09:12,078 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-31 22:09:12,263 WARN L251 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00be407e-773f-4f0e-932f-60276e2476e2/sv-benchmarks/c/bitvector/num_conversion_2.c[685,698] [2024-10-31 22:09:12,284 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:09:12,306 INFO L200 MainTranslator]: Completed pre-run [2024-10-31 22:09:12,319 WARN L251 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00be407e-773f-4f0e-932f-60276e2476e2/sv-benchmarks/c/bitvector/num_conversion_2.c[685,698] [2024-10-31 22:09:12,331 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:09:12,353 INFO L204 MainTranslator]: Completed translation [2024-10-31 22:09:12,354 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:09:12 WrapperNode [2024-10-31 22:09:12,354 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-31 22:09:12,356 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-31 22:09:12,356 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-31 22:09:12,356 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-31 22:09:12,365 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:09:12" (1/1) ... [2024-10-31 22:09:12,373 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:09:12" (1/1) ... [2024-10-31 22:09:12,401 INFO L138 Inliner]: procedures = 13, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 49 [2024-10-31 22:09:12,402 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-31 22:09:12,406 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-31 22:09:12,407 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-31 22:09:12,407 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-31 22:09:12,430 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:09:12" (1/1) ... [2024-10-31 22:09:12,431 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:09:12" (1/1) ... [2024-10-31 22:09:12,432 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:09:12" (1/1) ... [2024-10-31 22:09:12,457 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-10-31 22:09:12,457 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:09:12" (1/1) ... [2024-10-31 22:09:12,458 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:09:12" (1/1) ... [2024-10-31 22:09:12,463 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:09:12" (1/1) ... [2024-10-31 22:09:12,471 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:09:12" (1/1) ... [2024-10-31 22:09:12,472 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:09:12" (1/1) ... [2024-10-31 22:09:12,473 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:09:12" (1/1) ... [2024-10-31 22:09:12,479 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-31 22:09:12,480 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-31 22:09:12,480 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-31 22:09:12,480 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-31 22:09:12,481 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:09:12" (1/1) ... [2024-10-31 22:09:12,493 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:09:12,508 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00be407e-773f-4f0e-932f-60276e2476e2/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:09:12,523 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00be407e-773f-4f0e-932f-60276e2476e2/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-31 22:09:12,529 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00be407e-773f-4f0e-932f-60276e2476e2/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-31 22:09:12,563 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-31 22:09:12,563 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-31 22:09:12,563 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-31 22:09:12,564 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-31 22:09:12,640 INFO L238 CfgBuilder]: Building ICFG [2024-10-31 22:09:12,645 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-31 22:09:12,866 INFO L? ?]: Removed 11 outVars from TransFormulas that were not future-live. [2024-10-31 22:09:12,866 INFO L287 CfgBuilder]: Performing block encoding [2024-10-31 22:09:12,878 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-31 22:09:12,879 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-31 22:09:12,879 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:09:12 BoogieIcfgContainer [2024-10-31 22:09:12,880 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-31 22:09:12,883 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-31 22:09:12,883 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-31 22:09:12,887 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-31 22:09:12,887 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.10 10:09:12" (1/3) ... [2024-10-31 22:09:12,889 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@de4fe84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:09:12, skipping insertion in model container [2024-10-31 22:09:12,890 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:09:12" (2/3) ... [2024-10-31 22:09:12,890 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@de4fe84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:09:12, skipping insertion in model container [2024-10-31 22:09:12,891 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:09:12" (3/3) ... [2024-10-31 22:09:12,893 INFO L112 eAbstractionObserver]: Analyzing ICFG num_conversion_2.c [2024-10-31 22:09:12,912 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-31 22:09:12,913 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-31 22:09:13,005 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 22:09:13,015 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;@41f928b3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 22:09:13,017 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-31 22:09:13,022 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 18 states have (on average 1.4444444444444444) internal successors, (26), 19 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:09:13,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-10-31 22:09:13,031 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:09:13,032 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-10-31 22:09:13,033 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:09:13,040 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:09:13,041 INFO L85 PathProgramCache]: Analyzing trace with hash 889661639, now seen corresponding path program 1 times [2024-10-31 22:09:13,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:09:13,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754120322] [2024-10-31 22:09:13,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:09:13,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:09:13,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:13,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:09:13,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:09:13,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754120322] [2024-10-31 22:09:13,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754120322] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:09:13,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:09:13,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:09:13,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833125493] [2024-10-31 22:09:13,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:09:13,405 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:09:13,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:09:13,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:09:13,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:09:13,436 INFO L87 Difference]: Start difference. First operand has 20 states, 18 states have (on average 1.4444444444444444) internal successors, (26), 19 states have internal predecessors, (26), 0 states have call successors, (0), 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 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:09:13,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:09:13,478 INFO L93 Difference]: Finished difference Result 47 states and 65 transitions. [2024-10-31 22:09:13,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:09:13,481 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 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 6 [2024-10-31 22:09:13,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:09:13,490 INFO L225 Difference]: With dead ends: 47 [2024-10-31 22:09:13,490 INFO L226 Difference]: Without dead ends: 25 [2024-10-31 22:09:13,494 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:09:13,498 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 11 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-31 22:09:13,499 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 38 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-31 22:09:13,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2024-10-31 22:09:13,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 18. [2024-10-31 22:09:13,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 17 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:09:13,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2024-10-31 22:09:13,536 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 22 transitions. Word has length 6 [2024-10-31 22:09:13,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:09:13,536 INFO L471 AbstractCegarLoop]: Abstraction has 18 states and 22 transitions. [2024-10-31 22:09:13,537 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:09:13,537 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2024-10-31 22:09:13,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-10-31 22:09:13,540 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:09:13,540 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:09:13,540 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-31 22:09:13,541 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:09:13,543 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:09:13,544 INFO L85 PathProgramCache]: Analyzing trace with hash 2083677087, now seen corresponding path program 1 times [2024-10-31 22:09:13,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:09:13,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798783035] [2024-10-31 22:09:13,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:09:13,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:09:13,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:13,787 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:09:13,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:09:13,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798783035] [2024-10-31 22:09:13,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [798783035] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:09:13,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:09:13,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-31 22:09:13,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30836963] [2024-10-31 22:09:13,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:09:13,791 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:09:13,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:09:13,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:09:13,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:09:13,796 INFO L87 Difference]: Start difference. First operand 18 states and 22 transitions. 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) [2024-10-31 22:09:13,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:09:13,828 INFO L93 Difference]: Finished difference Result 34 states and 43 transitions. [2024-10-31 22:09:13,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 22:09:13,829 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 [2024-10-31 22:09:13,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:09:13,830 INFO L225 Difference]: With dead ends: 34 [2024-10-31 22:09:13,830 INFO L226 Difference]: Without dead ends: 20 [2024-10-31 22:09:13,831 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:09:13,832 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 0 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-31 22:09:13,833 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 47 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-31 22:09:13,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2024-10-31 22:09:13,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2024-10-31 22:09:13,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.263157894736842) internal successors, (24), 19 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:09:13,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 24 transitions. [2024-10-31 22:09:13,838 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 24 transitions. Word has length 13 [2024-10-31 22:09:13,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:09:13,839 INFO L471 AbstractCegarLoop]: Abstraction has 20 states and 24 transitions. [2024-10-31 22:09:13,839 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) [2024-10-31 22:09:13,839 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 24 transitions. [2024-10-31 22:09:13,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-10-31 22:09:13,840 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:09:13,840 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:09:13,841 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-31 22:09:13,841 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:09:13,842 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:09:13,842 INFO L85 PathProgramCache]: Analyzing trace with hash 2140935389, now seen corresponding path program 1 times [2024-10-31 22:09:13,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:09:13,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927684146] [2024-10-31 22:09:13,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:09:13,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:09:13,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:13,947 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:09:13,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:09:13,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927684146] [2024-10-31 22:09:13,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927684146] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:09:13,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1251266386] [2024-10-31 22:09:13,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:09:13,949 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:09:13,949 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00be407e-773f-4f0e-932f-60276e2476e2/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:09:13,952 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00be407e-773f-4f0e-932f-60276e2476e2/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:09:13,957 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00be407e-773f-4f0e-932f-60276e2476e2/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-31 22:09:14,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:14,032 INFO L255 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-31 22:09:14,039 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:09:14,261 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:09:14,261 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:09:14,685 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:09:14,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1251266386] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-31 22:09:14,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-31 22:09:14,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [4, 7] total 15 [2024-10-31 22:09:14,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093480407] [2024-10-31 22:09:14,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:09:14,690 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-31 22:09:14,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:09:14,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-31 22:09:14,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2024-10-31 22:09:14,692 INFO L87 Difference]: Start difference. First operand 20 states and 24 transitions. Second operand has 8 states, 8 states have (on average 1.625) internal successors, (13), 8 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) [2024-10-31 22:09:14,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:09:14,962 INFO L93 Difference]: Finished difference Result 36 states and 43 transitions. [2024-10-31 22:09:14,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-31 22:09:14,963 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.625) internal successors, (13), 8 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 [2024-10-31 22:09:14,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:09:14,964 INFO L225 Difference]: With dead ends: 36 [2024-10-31 22:09:14,964 INFO L226 Difference]: Without dead ends: 32 [2024-10-31 22:09:14,965 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=98, Invalid=174, Unknown=0, NotChecked=0, Total=272 [2024-10-31 22:09:14,966 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 44 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-31 22:09:14,966 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 42 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-31 22:09:14,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-10-31 22:09:14,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2024-10-31 22:09:14,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.2758620689655173) internal successors, (37), 29 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) [2024-10-31 22:09:14,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 37 transitions. [2024-10-31 22:09:14,972 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 37 transitions. Word has length 13 [2024-10-31 22:09:14,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:09:14,972 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 37 transitions. [2024-10-31 22:09:14,973 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.625) internal successors, (13), 8 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) [2024-10-31 22:09:14,973 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 37 transitions. [2024-10-31 22:09:14,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-10-31 22:09:14,973 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:09:14,974 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:09:14,996 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00be407e-773f-4f0e-932f-60276e2476e2/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-31 22:09:15,178 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00be407e-773f-4f0e-932f-60276e2476e2/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:09:15,181 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:09:15,185 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:09:15,185 INFO L85 PathProgramCache]: Analyzing trace with hash -2024916264, now seen corresponding path program 1 times [2024-10-31 22:09:15,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:09:15,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017320097] [2024-10-31 22:09:15,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:09:15,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:09:15,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:15,350 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:09:15,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:09:15,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017320097] [2024-10-31 22:09:15,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017320097] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:09:15,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [933157950] [2024-10-31 22:09:15,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:09:15,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:09:15,352 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00be407e-773f-4f0e-932f-60276e2476e2/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:09:15,353 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00be407e-773f-4f0e-932f-60276e2476e2/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:09:15,357 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00be407e-773f-4f0e-932f-60276e2476e2/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-31 22:09:15,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:15,414 INFO L255 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-31 22:09:15,415 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:09:15,547 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:09:15,547 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-31 22:09:15,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [933157950] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:09:15,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-31 22:09:15,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [4] total 8 [2024-10-31 22:09:15,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300816246] [2024-10-31 22:09:15,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:09:15,549 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 22:09:15,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:09:15,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 22:09:15,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-10-31 22:09:15,554 INFO L87 Difference]: Start difference. First operand 30 states and 37 transitions. Second operand has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 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) [2024-10-31 22:09:15,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:09:15,628 INFO L93 Difference]: Finished difference Result 69 states and 88 transitions. [2024-10-31 22:09:15,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-31 22:09:15,629 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 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 [2024-10-31 22:09:15,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:09:15,630 INFO L225 Difference]: With dead ends: 69 [2024-10-31 22:09:15,630 INFO L226 Difference]: Without dead ends: 43 [2024-10-31 22:09:15,631 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-10-31 22:09:15,632 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 23 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-31 22:09:15,633 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 41 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-31 22:09:15,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2024-10-31 22:09:15,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 31. [2024-10-31 22:09:15,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.2666666666666666) internal successors, (38), 30 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) [2024-10-31 22:09:15,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 38 transitions. [2024-10-31 22:09:15,646 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 38 transitions. Word has length 14 [2024-10-31 22:09:15,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:09:15,646 INFO L471 AbstractCegarLoop]: Abstraction has 31 states and 38 transitions. [2024-10-31 22:09:15,649 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 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) [2024-10-31 22:09:15,649 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 38 transitions. [2024-10-31 22:09:15,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-10-31 22:09:15,650 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:09:15,650 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:09:15,671 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00be407e-773f-4f0e-932f-60276e2476e2/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-31 22:09:15,850 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00be407e-773f-4f0e-932f-60276e2476e2/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:09:15,851 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:09:15,852 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:09:15,852 INFO L85 PathProgramCache]: Analyzing trace with hash 704436752, now seen corresponding path program 1 times [2024-10-31 22:09:15,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:09:15,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789431070] [2024-10-31 22:09:15,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:09:15,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:09:15,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:16,090 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:09:16,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:09:16,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789431070] [2024-10-31 22:09:16,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789431070] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:09:16,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1232941709] [2024-10-31 22:09:16,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:09:16,091 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:09:16,092 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00be407e-773f-4f0e-932f-60276e2476e2/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:09:16,095 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00be407e-773f-4f0e-932f-60276e2476e2/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:09:16,097 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00be407e-773f-4f0e-932f-60276e2476e2/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-31 22:09:16,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:16,149 INFO L255 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-31 22:09:16,151 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:09:16,449 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:09:16,449 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:09:16,855 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:09:16,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1232941709] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:09:16,858 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:09:16,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 9] total 18 [2024-10-31 22:09:16,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608754773] [2024-10-31 22:09:16,859 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:09:16,860 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-10-31 22:09:16,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:09:16,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-10-31 22:09:16,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2024-10-31 22:09:16,864 INFO L87 Difference]: Start difference. First operand 31 states and 38 transitions. Second operand has 18 states, 18 states have (on average 3.2222222222222223) internal successors, (58), 18 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:09:17,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:09:17,561 INFO L93 Difference]: Finished difference Result 165 states and 211 transitions. [2024-10-31 22:09:17,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-10-31 22:09:17,562 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.2222222222222223) internal successors, (58), 18 states have internal predecessors, (58), 0 states have call successors, (0), 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 21 [2024-10-31 22:09:17,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:09:17,563 INFO L225 Difference]: With dead ends: 165 [2024-10-31 22:09:17,564 INFO L226 Difference]: Without dead ends: 101 [2024-10-31 22:09:17,564 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 213 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=211, Invalid=601, Unknown=0, NotChecked=0, Total=812 [2024-10-31 22:09:17,565 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 218 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-31 22:09:17,566 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [218 Valid, 93 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 230 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-31 22:09:17,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2024-10-31 22:09:17,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 89. [2024-10-31 22:09:17,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 88 states have (on average 1.3068181818181819) internal successors, (115), 88 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:09:17,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 115 transitions. [2024-10-31 22:09:17,578 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 115 transitions. Word has length 21 [2024-10-31 22:09:17,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:09:17,578 INFO L471 AbstractCegarLoop]: Abstraction has 89 states and 115 transitions. [2024-10-31 22:09:17,578 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.2222222222222223) internal successors, (58), 18 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:09:17,579 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 115 transitions. [2024-10-31 22:09:17,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-10-31 22:09:17,580 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:09:17,580 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:09:17,600 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00be407e-773f-4f0e-932f-60276e2476e2/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-31 22:09:17,784 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00be407e-773f-4f0e-932f-60276e2476e2/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:09:17,785 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:09:17,785 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:09:17,786 INFO L85 PathProgramCache]: Analyzing trace with hash -1363178434, now seen corresponding path program 1 times [2024-10-31 22:09:17,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:09:17,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567516280] [2024-10-31 22:09:17,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:09:17,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:09:17,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:17,970 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:09:17,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:09:17,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567516280] [2024-10-31 22:09:17,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567516280] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:09:17,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [120611532] [2024-10-31 22:09:17,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:09:17,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:09:17,972 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00be407e-773f-4f0e-932f-60276e2476e2/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:09:17,974 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00be407e-773f-4f0e-932f-60276e2476e2/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:09:17,975 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00be407e-773f-4f0e-932f-60276e2476e2/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-31 22:09:18,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:18,039 INFO L255 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-31 22:09:18,041 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:09:18,339 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-31 22:09:18,339 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:09:18,945 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-31 22:09:18,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [120611532] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:09:18,946 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:09:18,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 7] total 16 [2024-10-31 22:09:18,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476313626] [2024-10-31 22:09:18,947 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:09:18,947 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-10-31 22:09:18,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:09:18,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-10-31 22:09:18,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2024-10-31 22:09:18,949 INFO L87 Difference]: Start difference. First operand 89 states and 115 transitions. Second operand has 16 states, 16 states have (on average 4.1875) internal successors, (67), 16 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:09:20,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:09:20,347 INFO L93 Difference]: Finished difference Result 397 states and 521 transitions. [2024-10-31 22:09:20,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-10-31 22:09:20,348 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.1875) internal successors, (67), 16 states have internal predecessors, (67), 0 states have call successors, (0), 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 30 [2024-10-31 22:09:20,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:09:20,351 INFO L225 Difference]: With dead ends: 397 [2024-10-31 22:09:20,355 INFO L226 Difference]: Without dead ends: 342 [2024-10-31 22:09:20,356 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 47 SyntacticMatches, 3 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 443 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=321, Invalid=1319, Unknown=0, NotChecked=0, Total=1640 [2024-10-31 22:09:20,357 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 315 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 489 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 315 SdHoareTripleChecker+Valid, 258 SdHoareTripleChecker+Invalid, 518 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 489 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-31 22:09:20,357 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [315 Valid, 258 Invalid, 518 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 489 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-31 22:09:20,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2024-10-31 22:09:20,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 231. [2024-10-31 22:09:20,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 230 states have (on average 1.3130434782608695) internal successors, (302), 230 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:09:20,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 302 transitions. [2024-10-31 22:09:20,398 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 302 transitions. Word has length 30 [2024-10-31 22:09:20,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:09:20,398 INFO L471 AbstractCegarLoop]: Abstraction has 231 states and 302 transitions. [2024-10-31 22:09:20,398 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.1875) internal successors, (67), 16 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:09:20,399 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 302 transitions. [2024-10-31 22:09:20,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-10-31 22:09:20,400 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:09:20,400 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:09:20,423 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00be407e-773f-4f0e-932f-60276e2476e2/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-31 22:09:20,604 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00be407e-773f-4f0e-932f-60276e2476e2/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:09:20,605 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:09:20,606 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:09:20,607 INFO L85 PathProgramCache]: Analyzing trace with hash -2063550545, now seen corresponding path program 1 times [2024-10-31 22:09:20,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:09:20,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210016989] [2024-10-31 22:09:20,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:09:20,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:09:20,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:20,809 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-10-31 22:09:20,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:09:20,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210016989] [2024-10-31 22:09:20,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210016989] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:09:20,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:09:20,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-31 22:09:20,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524198367] [2024-10-31 22:09:20,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:09:20,810 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 22:09:20,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:09:20,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 22:09:20,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:09:20,812 INFO L87 Difference]: Start difference. First operand 231 states and 302 transitions. Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:09:20,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:09:20,859 INFO L93 Difference]: Finished difference Result 446 states and 589 transitions. [2024-10-31 22:09:20,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-31 22:09:20,860 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 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 [2024-10-31 22:09:20,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:09:20,862 INFO L225 Difference]: With dead ends: 446 [2024-10-31 22:09:20,862 INFO L226 Difference]: Without dead ends: 251 [2024-10-31 22:09:20,863 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:09:20,864 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 14 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-31 22:09:20,866 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 36 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-31 22:09:20,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2024-10-31 22:09:20,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 235. [2024-10-31 22:09:20,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 234 states have (on average 1.2735042735042734) internal successors, (298), 234 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:09:20,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 298 transitions. [2024-10-31 22:09:20,898 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 298 transitions. Word has length 38 [2024-10-31 22:09:20,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:09:20,898 INFO L471 AbstractCegarLoop]: Abstraction has 235 states and 298 transitions. [2024-10-31 22:09:20,899 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:09:20,899 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 298 transitions. [2024-10-31 22:09:20,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-10-31 22:09:20,900 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:09:20,900 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:09:20,901 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-31 22:09:20,905 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:09:20,906 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:09:20,906 INFO L85 PathProgramCache]: Analyzing trace with hash 78406084, now seen corresponding path program 2 times [2024-10-31 22:09:20,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:09:20,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098586607] [2024-10-31 22:09:20,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:09:20,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:09:20,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:21,118 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:09:21,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:09:21,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098586607] [2024-10-31 22:09:21,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098586607] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:09:21,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1430855488] [2024-10-31 22:09:21,123 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-31 22:09:21,124 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:09:21,124 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00be407e-773f-4f0e-932f-60276e2476e2/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:09:21,128 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00be407e-773f-4f0e-932f-60276e2476e2/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:09:21,132 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00be407e-773f-4f0e-932f-60276e2476e2/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-31 22:09:21,211 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-31 22:09:21,211 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-31 22:09:21,216 INFO L255 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-10-31 22:09:21,217 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:09:21,369 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 7 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:09:21,369 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:09:21,719 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 7 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:09:21,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1430855488] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:09:21,719 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:09:21,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 19 [2024-10-31 22:09:21,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080842140] [2024-10-31 22:09:21,720 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:09:21,720 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-10-31 22:09:21,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:09:21,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-10-31 22:09:21,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=227, Unknown=0, NotChecked=0, Total=342 [2024-10-31 22:09:21,722 INFO L87 Difference]: Start difference. First operand 235 states and 298 transitions. Second operand has 19 states, 19 states have (on average 5.631578947368421) internal successors, (107), 19 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:09:22,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:09:22,070 INFO L93 Difference]: Finished difference Result 640 states and 834 transitions. [2024-10-31 22:09:22,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-31 22:09:22,071 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.631578947368421) internal successors, (107), 19 states have internal predecessors, (107), 0 states have call successors, (0), 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 [2024-10-31 22:09:22,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:09:22,073 INFO L225 Difference]: With dead ends: 640 [2024-10-31 22:09:22,073 INFO L226 Difference]: Without dead ends: 534 [2024-10-31 22:09:22,077 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=198, Invalid=354, Unknown=0, NotChecked=0, Total=552 [2024-10-31 22:09:22,078 INFO L432 NwaCegarLoop]: 53 mSDtfsCounter, 236 mSDsluCounter, 332 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 385 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-31 22:09:22,078 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [236 Valid, 385 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-31 22:09:22,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534 states. [2024-10-31 22:09:22,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534 to 398. [2024-10-31 22:09:22,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 398 states, 397 states have (on average 1.2745591939546599) internal successors, (506), 397 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:09:22,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398 states to 398 states and 506 transitions. [2024-10-31 22:09:22,109 INFO L78 Accepts]: Start accepts. Automaton has 398 states and 506 transitions. Word has length 39 [2024-10-31 22:09:22,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:09:22,109 INFO L471 AbstractCegarLoop]: Abstraction has 398 states and 506 transitions. [2024-10-31 22:09:22,110 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.631578947368421) internal successors, (107), 19 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:09:22,110 INFO L276 IsEmpty]: Start isEmpty. Operand 398 states and 506 transitions. [2024-10-31 22:09:22,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-10-31 22:09:22,118 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:09:22,118 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 6, 6, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:09:22,139 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00be407e-773f-4f0e-932f-60276e2476e2/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-31 22:09:22,318 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00be407e-773f-4f0e-932f-60276e2476e2/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-10-31 22:09:22,319 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:09:22,320 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:09:22,320 INFO L85 PathProgramCache]: Analyzing trace with hash 303057016, now seen corresponding path program 3 times [2024-10-31 22:09:22,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:09:22,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887510834] [2024-10-31 22:09:22,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:09:22,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:09:22,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:09:22,393 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-31 22:09:22,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:09:22,470 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-31 22:09:22,471 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-31 22:09:22,472 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-10-31 22:09:22,474 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-31 22:09:22,478 INFO L407 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1, 1, 1, 1] [2024-10-31 22:09:22,513 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-10-31 22:09:22,517 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.10 10:09:22 BoogieIcfgContainer [2024-10-31 22:09:22,518 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-31 22:09:22,519 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-31 22:09:22,519 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-31 22:09:22,519 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-31 22:09:22,520 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:09:12" (3/4) ... [2024-10-31 22:09:22,523 INFO L145 WitnessPrinter]: No result that supports witness generation found [2024-10-31 22:09:22,524 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-31 22:09:22,525 INFO L158 Benchmark]: Toolchain (without parser) took 10480.63ms. Allocated memory was 136.3MB in the beginning and 211.8MB in the end (delta: 75.5MB). Free memory was 99.6MB in the beginning and 143.7MB in the end (delta: -44.1MB). Peak memory consumption was 33.5MB. Max. memory is 16.1GB. [2024-10-31 22:09:22,525 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 136.3MB. Free memory is still 83.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-31 22:09:22,525 INFO L158 Benchmark]: CACSL2BoogieTranslator took 309.41ms. Allocated memory is still 136.3MB. Free memory was 99.6MB in the beginning and 87.0MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-10-31 22:09:22,526 INFO L158 Benchmark]: Boogie Procedure Inliner took 45.95ms. Allocated memory is still 136.3MB. Free memory was 87.0MB in the beginning and 85.4MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-31 22:09:22,526 INFO L158 Benchmark]: Boogie Preprocessor took 72.65ms. Allocated memory is still 136.3MB. Free memory was 85.4MB in the beginning and 83.6MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-31 22:09:22,526 INFO L158 Benchmark]: RCFGBuilder took 400.01ms. Allocated memory is still 136.3MB. Free memory was 83.2MB in the beginning and 72.4MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-10-31 22:09:22,527 INFO L158 Benchmark]: TraceAbstraction took 9634.81ms. Allocated memory was 136.3MB in the beginning and 211.8MB in the end (delta: 75.5MB). Free memory was 71.5MB in the beginning and 144.7MB in the end (delta: -73.2MB). Peak memory consumption was 4.1MB. Max. memory is 16.1GB. [2024-10-31 22:09:22,527 INFO L158 Benchmark]: Witness Printer took 5.22ms. Allocated memory is still 211.8MB. Free memory was 144.7MB in the beginning and 143.7MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-31 22:09:22,530 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 136.3MB. Free memory is still 83.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 309.41ms. Allocated memory is still 136.3MB. Free memory was 99.6MB in the beginning and 87.0MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 45.95ms. Allocated memory is still 136.3MB. Free memory was 87.0MB in the beginning and 85.4MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 72.65ms. Allocated memory is still 136.3MB. Free memory was 85.4MB in the beginning and 83.6MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 400.01ms. Allocated memory is still 136.3MB. Free memory was 83.2MB in the beginning and 72.4MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 9634.81ms. Allocated memory was 136.3MB in the beginning and 211.8MB in the end (delta: 75.5MB). Free memory was 71.5MB in the beginning and 144.7MB in the end (delta: -73.2MB). Peak memory consumption was 4.1MB. Max. memory is 16.1GB. * Witness Printer took 5.22ms. Allocated memory is still 211.8MB. Free memory was 144.7MB in the beginning and 143.7MB in the end (delta: 1.0MB). 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: 16]: 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 shiftLeft at line 31. Possible FailurePath: [L24] unsigned char x = __VERIFIER_nondet_uchar(); [L25] unsigned char y; [L26] unsigned char c; [L28] y = 0 [L29] c = 0 VAL [c=0, y=0] [L30] COND TRUE c < (unsigned char)8 VAL [c=0, y=0] [L31] EXPR ((unsigned char)1) << c VAL [c=0, y=0] [L31] unsigned char i = ((unsigned char)1) << c; [L32] EXPR x & i VAL [c=0, i=1, x=1, y=0] [L32] unsigned char bit = x & i; [L33] COND TRUE bit != (unsigned char)0 [L34] y = y + i VAL [c=0, x=1, y=1] [L36] c = c + ((unsigned char)1) [L30] COND TRUE c < (unsigned char)8 VAL [c=1, x=1, y=1] [L31] EXPR ((unsigned char)1) << c VAL [c=1, x=1, y=1] [L31] unsigned char i = ((unsigned char)1) << c; [L32] EXPR x & i VAL [c=1, i=256, x=1, y=1] [L32] unsigned char bit = x & i; [L33] COND FALSE !(bit != (unsigned char)0) VAL [c=1, i=256, x=1, y=1] [L36] c = c + ((unsigned char)1) [L30] COND TRUE c < (unsigned char)8 VAL [c=2, x=1, y=1] [L31] EXPR ((unsigned char)1) << c VAL [c=2, x=1, y=1] [L31] unsigned char i = ((unsigned char)1) << c; [L32] EXPR x & i VAL [c=2, i=256, x=1, y=1] [L32] unsigned char bit = x & i; [L33] COND FALSE !(bit != (unsigned char)0) VAL [c=2, i=256, x=1, y=1] [L36] c = c + ((unsigned char)1) [L30] COND TRUE c < (unsigned char)8 VAL [c=3, x=1, y=1] [L31] EXPR ((unsigned char)1) << c VAL [c=3, x=1, y=1] [L31] unsigned char i = ((unsigned char)1) << c; [L32] EXPR x & i VAL [c=3, i=256, x=1, y=1] [L32] unsigned char bit = x & i; [L33] COND FALSE !(bit != (unsigned char)0) VAL [c=3, i=256, x=1, y=1] [L36] c = c + ((unsigned char)1) [L30] COND TRUE c < (unsigned char)8 VAL [c=4, x=1, y=1] [L31] EXPR ((unsigned char)1) << c VAL [c=4, x=1, y=1] [L31] unsigned char i = ((unsigned char)1) << c; [L32] EXPR x & i VAL [c=4, i=256, x=1, y=1] [L32] unsigned char bit = x & i; [L33] COND FALSE !(bit != (unsigned char)0) VAL [c=4, i=256, x=1, y=1] [L36] c = c + ((unsigned char)1) [L30] COND TRUE c < (unsigned char)8 VAL [c=5, x=1, y=1] [L31] EXPR ((unsigned char)1) << c VAL [c=5, x=1, y=1] [L31] unsigned char i = ((unsigned char)1) << c; [L32] EXPR x & i VAL [c=5, i=256, x=1, y=1] [L32] unsigned char bit = x & i; [L33] COND FALSE !(bit != (unsigned char)0) VAL [c=5, i=256, x=1, y=1] [L36] c = c + ((unsigned char)1) [L30] COND TRUE c < (unsigned char)8 VAL [c=6, x=1, y=1] [L31] EXPR ((unsigned char)1) << c VAL [c=6, x=1, y=1] [L31] unsigned char i = ((unsigned char)1) << c; [L32] EXPR x & i VAL [c=6, i=256, x=1, y=1] [L32] unsigned char bit = x & i; [L33] COND FALSE !(bit != (unsigned char)0) VAL [c=6, i=256, x=1, y=1] [L36] c = c + ((unsigned char)1) [L30] COND TRUE c < (unsigned char)8 VAL [c=7, x=1, y=1] [L31] EXPR ((unsigned char)1) << c VAL [c=7, x=1, y=1] [L31] unsigned char i = ((unsigned char)1) << c; [L32] EXPR x & i VAL [c=7, i=257, x=1, y=1] [L32] unsigned char bit = x & i; [L33] COND TRUE bit != (unsigned char)0 [L34] y = y + i VAL [c=7, x=1, y=2] [L36] c = c + ((unsigned char)1) [L30] COND FALSE !(c < (unsigned char)8) VAL [x=1, y=2] [L38] CALL __VERIFIER_assert(x == y) [L15] COND TRUE !(cond) [L16] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 20 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 9.5s, OverallIterations: 9, TraceHistogramMax: 8, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 3.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 861 SdHoareTripleChecker+Valid, 1.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 861 mSDsluCounter, 940 SdHoareTripleChecker+Invalid, 1.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 759 mSDsCounter, 67 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1030 IncrementalHoareTripleChecker+Invalid, 1097 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 67 mSolverCounterUnsat, 181 mSDtfsCounter, 1030 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 298 GetRequests, 179 SyntacticMatches, 4 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 907 ImplicationChecksByTransitivity, 2.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=398occurred in iteration=8, 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: 0.2s AutomataMinimizationTime, 8 MinimizatonAttempts, 296 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 4.2s InterpolantComputationTime, 362 NumberOfCodeBlocks, 362 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 377 ConstructedInterpolants, 0 QuantifiedInterpolants, 2334 SizeOfPredicates, 14 NumberOfNonLiveVariables, 345 ConjunctsInSsa, 72 ConjunctsInUnsatCore, 17 InterpolantComputations, 5 PerfectInterpolantSequences, 94/307 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 [2024-10-31 22:09:22,566 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00be407e-773f-4f0e-932f-60276e2476e2/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with 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_00be407e-773f-4f0e-932f-60276e2476e2/bin/uautomizer-verify-4GaUIPS5ZU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00be407e-773f-4f0e-932f-60276e2476e2/bin/uautomizer-verify-4GaUIPS5ZU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00be407e-773f-4f0e-932f-60276e2476e2/bin/uautomizer-verify-4GaUIPS5ZU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00be407e-773f-4f0e-932f-60276e2476e2/bin/uautomizer-verify-4GaUIPS5ZU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/bitvector/num_conversion_2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00be407e-773f-4f0e-932f-60276e2476e2/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00be407e-773f-4f0e-932f-60276e2476e2/bin/uautomizer-verify-4GaUIPS5ZU --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7e0da033eb6b5a3b4db0394198751cf880534ee28b64f0bd7b196bfba1d785e1 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-10-31 22:09:25,060 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-31 22:09:25,175 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00be407e-773f-4f0e-932f-60276e2476e2/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2024-10-31 22:09:25,183 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-31 22:09:25,187 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-31 22:09:25,227 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-31 22:09:25,228 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-31 22:09:25,229 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-31 22:09:25,230 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-31 22:09:25,231 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-31 22:09:25,231 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-31 22:09:25,232 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-31 22:09:25,233 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-31 22:09:25,233 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-31 22:09:25,235 INFO L153 SettingsManager]: * Use SBE=true [2024-10-31 22:09:25,236 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-31 22:09:25,236 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-31 22:09:25,237 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-31 22:09:25,237 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-31 22:09:25,238 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-31 22:09:25,238 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-31 22:09:25,243 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-31 22:09:25,243 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-31 22:09:25,243 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-31 22:09:25,244 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-10-31 22:09:25,244 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-31 22:09:25,244 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-10-31 22:09:25,245 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-31 22:09:25,245 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-31 22:09:25,245 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-31 22:09:25,246 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-31 22:09:25,246 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-31 22:09:25,248 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-31 22:09:25,248 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-31 22:09:25,249 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:09:25,249 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-31 22:09:25,249 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-31 22:09:25,250 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-31 22:09:25,251 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-10-31 22:09:25,251 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-10-31 22:09:25,251 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-31 22:09:25,252 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-31 22:09:25,252 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-31 22:09:25,253 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-31 22:09:25,253 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2024-10-31 22:09:25,254 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_00be407e-773f-4f0e-932f-60276e2476e2/bin/uautomizer-verify-4GaUIPS5ZU/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00be407e-773f-4f0e-932f-60276e2476e2/bin/uautomizer-verify-4GaUIPS5ZU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7e0da033eb6b5a3b4db0394198751cf880534ee28b64f0bd7b196bfba1d785e1 [2024-10-31 22:09:25,675 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-31 22:09:25,706 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-31 22:09:25,709 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-31 22:09:25,710 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-31 22:09:25,711 INFO L274 PluginConnector]: CDTParser initialized [2024-10-31 22:09:25,713 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00be407e-773f-4f0e-932f-60276e2476e2/bin/uautomizer-verify-4GaUIPS5ZU/../../sv-benchmarks/c/bitvector/num_conversion_2.c Unable to find full path for "g++" [2024-10-31 22:09:27,749 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-31 22:09:27,990 INFO L384 CDTParser]: Found 1 translation units. [2024-10-31 22:09:27,991 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00be407e-773f-4f0e-932f-60276e2476e2/sv-benchmarks/c/bitvector/num_conversion_2.c [2024-10-31 22:09:28,000 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00be407e-773f-4f0e-932f-60276e2476e2/bin/uautomizer-verify-4GaUIPS5ZU/data/02ff16f45/842b7a0d1ba04265a0bdd7df25c00361/FLAG827d900ea [2024-10-31 22:09:28,335 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00be407e-773f-4f0e-932f-60276e2476e2/bin/uautomizer-verify-4GaUIPS5ZU/data/02ff16f45/842b7a0d1ba04265a0bdd7df25c00361 [2024-10-31 22:09:28,338 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-31 22:09:28,344 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-31 22:09:28,346 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-31 22:09:28,347 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-31 22:09:28,355 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-31 22:09:28,356 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:09:28" (1/1) ... [2024-10-31 22:09:28,360 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49e2ad42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:09:28, skipping insertion in model container [2024-10-31 22:09:28,360 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:09:28" (1/1) ... [2024-10-31 22:09:28,388 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-31 22:09:28,628 WARN L251 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00be407e-773f-4f0e-932f-60276e2476e2/sv-benchmarks/c/bitvector/num_conversion_2.c[685,698] [2024-10-31 22:09:28,655 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:09:28,672 INFO L200 MainTranslator]: Completed pre-run [2024-10-31 22:09:28,685 WARN L251 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00be407e-773f-4f0e-932f-60276e2476e2/sv-benchmarks/c/bitvector/num_conversion_2.c[685,698] [2024-10-31 22:09:28,696 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:09:28,718 INFO L204 MainTranslator]: Completed translation [2024-10-31 22:09:28,718 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:09:28 WrapperNode [2024-10-31 22:09:28,719 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-31 22:09:28,720 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-31 22:09:28,720 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-31 22:09:28,720 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-31 22:09:28,729 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:09:28" (1/1) ... [2024-10-31 22:09:28,738 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:09:28" (1/1) ... [2024-10-31 22:09:28,756 INFO L138 Inliner]: procedures = 13, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 35 [2024-10-31 22:09:28,757 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-31 22:09:28,758 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-31 22:09:28,759 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-31 22:09:28,759 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-31 22:09:28,772 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:09:28" (1/1) ... [2024-10-31 22:09:28,773 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:09:28" (1/1) ... [2024-10-31 22:09:28,776 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:09:28" (1/1) ... [2024-10-31 22:09:28,792 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-10-31 22:09:28,799 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:09:28" (1/1) ... [2024-10-31 22:09:28,800 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:09:28" (1/1) ... [2024-10-31 22:09:28,807 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:09:28" (1/1) ... [2024-10-31 22:09:28,812 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:09:28" (1/1) ... [2024-10-31 22:09:28,814 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:09:28" (1/1) ... [2024-10-31 22:09:28,816 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:09:28" (1/1) ... [2024-10-31 22:09:28,820 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-31 22:09:28,821 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-31 22:09:28,822 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-31 22:09:28,823 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-31 22:09:28,824 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:09:28" (1/1) ... [2024-10-31 22:09:28,832 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:09:28,849 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00be407e-773f-4f0e-932f-60276e2476e2/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:09:28,880 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00be407e-773f-4f0e-932f-60276e2476e2/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-31 22:09:28,895 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00be407e-773f-4f0e-932f-60276e2476e2/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-31 22:09:28,939 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-31 22:09:28,940 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-31 22:09:28,940 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-31 22:09:28,944 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-10-31 22:09:29,048 INFO L238 CfgBuilder]: Building ICFG [2024-10-31 22:09:29,053 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-31 22:09:29,293 INFO L? ?]: Removed 11 outVars from TransFormulas that were not future-live. [2024-10-31 22:09:29,295 INFO L287 CfgBuilder]: Performing block encoding [2024-10-31 22:09:29,309 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-31 22:09:29,309 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-31 22:09:29,310 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:09:29 BoogieIcfgContainer [2024-10-31 22:09:29,310 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-31 22:09:29,313 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-31 22:09:29,314 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-31 22:09:29,317 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-31 22:09:29,318 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.10 10:09:28" (1/3) ... [2024-10-31 22:09:29,319 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6deedc1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:09:29, skipping insertion in model container [2024-10-31 22:09:29,320 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:09:28" (2/3) ... [2024-10-31 22:09:29,321 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6deedc1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:09:29, skipping insertion in model container [2024-10-31 22:09:29,321 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:09:29" (3/3) ... [2024-10-31 22:09:29,323 INFO L112 eAbstractionObserver]: Analyzing ICFG num_conversion_2.c [2024-10-31 22:09:29,345 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-31 22:09:29,346 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-31 22:09:29,434 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 22:09:29,443 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;@2c72cac, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 22:09:29,444 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-31 22:09:29,449 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:09:29,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-10-31 22:09:29,458 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:09:29,459 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-10-31 22:09:29,460 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:09:29,469 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:09:29,470 INFO L85 PathProgramCache]: Analyzing trace with hash 889968487, now seen corresponding path program 1 times [2024-10-31 22:09:29,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-31 22:09:29,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1414834054] [2024-10-31 22:09:29,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:09:29,487 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-31 22:09:29,487 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00be407e-773f-4f0e-932f-60276e2476e2/bin/uautomizer-verify-4GaUIPS5ZU/mathsat [2024-10-31 22:09:29,491 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00be407e-773f-4f0e-932f-60276e2476e2/bin/uautomizer-verify-4GaUIPS5ZU/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-31 22:09:29,493 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00be407e-773f-4f0e-932f-60276e2476e2/bin/uautomizer-verify-4GaUIPS5ZU/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2024-10-31 22:09:29,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:29,584 INFO L255 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-10-31 22:09:29,589 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:09:29,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:09:29,611 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-31 22:09:29,612 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-31 22:09:29,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1414834054] [2024-10-31 22:09:29,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1414834054] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:09:29,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:09:29,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:09:29,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821191871] [2024-10-31 22:09:29,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:09:29,622 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-31 22:09:29,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-31 22:09:29,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-31 22:09:29,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-31 22:09:29,659 INFO L87 Difference]: Start difference. First operand has 13 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:09:29,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:09:29,674 INFO L93 Difference]: Finished difference Result 21 states and 24 transitions. [2024-10-31 22:09:29,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-31 22:09:29,677 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 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 6 [2024-10-31 22:09:29,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:09:29,685 INFO L225 Difference]: With dead ends: 21 [2024-10-31 22:09:29,686 INFO L226 Difference]: Without dead ends: 9 [2024-10-31 22:09:29,689 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-31 22:09:29,695 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-31 22:09:29,697 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-31 22:09:29,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2024-10-31 22:09:29,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2024-10-31 22:09:29,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.25) internal successors, (10), 8 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:09:29,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2024-10-31 22:09:29,732 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 10 transitions. Word has length 6 [2024-10-31 22:09:29,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:09:29,733 INFO L471 AbstractCegarLoop]: Abstraction has 9 states and 10 transitions. [2024-10-31 22:09:29,734 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:09:29,734 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 10 transitions. [2024-10-31 22:09:29,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-10-31 22:09:29,735 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:09:29,735 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-10-31 22:09:29,739 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00be407e-773f-4f0e-932f-60276e2476e2/bin/uautomizer-verify-4GaUIPS5ZU/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2024-10-31 22:09:29,937 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00be407e-773f-4f0e-932f-60276e2476e2/bin/uautomizer-verify-4GaUIPS5ZU/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-31 22:09:29,937 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:09:29,938 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:09:29,938 INFO L85 PathProgramCache]: Analyzing trace with hash 889640786, now seen corresponding path program 1 times [2024-10-31 22:09:29,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-31 22:09:29,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [714285443] [2024-10-31 22:09:29,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:09:29,940 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-31 22:09:29,940 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00be407e-773f-4f0e-932f-60276e2476e2/bin/uautomizer-verify-4GaUIPS5ZU/mathsat [2024-10-31 22:09:29,942 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00be407e-773f-4f0e-932f-60276e2476e2/bin/uautomizer-verify-4GaUIPS5ZU/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-31 22:09:29,943 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00be407e-773f-4f0e-932f-60276e2476e2/bin/uautomizer-verify-4GaUIPS5ZU/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2024-10-31 22:09:29,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:30,002 INFO L255 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-31 22:09:30,003 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:09:30,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:09:30,042 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-31 22:09:30,043 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-31 22:09:30,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [714285443] [2024-10-31 22:09:30,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [714285443] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:09:30,043 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:09:30,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:09:30,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306292766] [2024-10-31 22:09:30,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:09:30,047 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:09:30,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-31 22:09:30,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:09:30,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:09:30,050 INFO L87 Difference]: Start difference. First operand 9 states and 10 transitions. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:09:30,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:09:30,077 INFO L93 Difference]: Finished difference Result 16 states and 18 transitions. [2024-10-31 22:09:30,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:09:30,078 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 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 6 [2024-10-31 22:09:30,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:09:30,079 INFO L225 Difference]: With dead ends: 16 [2024-10-31 22:09:30,079 INFO L226 Difference]: Without dead ends: 12 [2024-10-31 22:09:30,079 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:09:30,082 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 3 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-31 22:09:30,083 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 14 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-31 22:09:30,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2024-10-31 22:09:30,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 10. [2024-10-31 22:09:30,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 9 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:09:30,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2024-10-31 22:09:30,091 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 11 transitions. Word has length 6 [2024-10-31 22:09:30,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:09:30,091 INFO L471 AbstractCegarLoop]: Abstraction has 10 states and 11 transitions. [2024-10-31 22:09:30,092 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:09:30,093 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2024-10-31 22:09:30,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-10-31 22:09:30,094 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:09:30,094 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:09:30,099 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00be407e-773f-4f0e-932f-60276e2476e2/bin/uautomizer-verify-4GaUIPS5ZU/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2024-10-31 22:09:30,296 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00be407e-773f-4f0e-932f-60276e2476e2/bin/uautomizer-verify-4GaUIPS5ZU/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-31 22:09:30,297 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:09:30,298 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:09:30,298 INFO L85 PathProgramCache]: Analyzing trace with hash 641725625, now seen corresponding path program 1 times [2024-10-31 22:09:30,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-31 22:09:30,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [652797402] [2024-10-31 22:09:30,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:09:30,299 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-31 22:09:30,300 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00be407e-773f-4f0e-932f-60276e2476e2/bin/uautomizer-verify-4GaUIPS5ZU/mathsat [2024-10-31 22:09:30,301 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00be407e-773f-4f0e-932f-60276e2476e2/bin/uautomizer-verify-4GaUIPS5ZU/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-31 22:09:30,303 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00be407e-773f-4f0e-932f-60276e2476e2/bin/uautomizer-verify-4GaUIPS5ZU/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2024-10-31 22:09:30,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:30,354 INFO L255 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-31 22:09:30,356 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:09:30,438 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:09:30,439 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:09:30,497 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:09:30,497 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-31 22:09:30,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [652797402] [2024-10-31 22:09:30,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [652797402] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:09:30,498 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-31 22:09:30,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2024-10-31 22:09:30,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458191040] [2024-10-31 22:09:30,502 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-31 22:09:30,503 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 22:09:30,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-31 22:09:30,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 22:09:30,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-10-31 22:09:30,504 INFO L87 Difference]: Start difference. First operand 10 states and 11 transitions. Second operand has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 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) [2024-10-31 22:09:30,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:09:30,577 INFO L93 Difference]: Finished difference Result 23 states and 29 transitions. [2024-10-31 22:09:30,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-31 22:09:30,580 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 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 9 [2024-10-31 22:09:30,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:09:30,580 INFO L225 Difference]: With dead ends: 23 [2024-10-31 22:09:30,581 INFO L226 Difference]: Without dead ends: 19 [2024-10-31 22:09:30,581 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2024-10-31 22:09:30,582 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 11 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-31 22:09:30,583 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 32 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-31 22:09:30,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2024-10-31 22:09:30,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2024-10-31 22:09:30,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 18 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:09:30,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2024-10-31 22:09:30,591 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 9 [2024-10-31 22:09:30,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:09:30,591 INFO L471 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions. [2024-10-31 22:09:30,592 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 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) [2024-10-31 22:09:30,592 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2024-10-31 22:09:30,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-10-31 22:09:30,593 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:09:30,593 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1] [2024-10-31 22:09:30,597 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00be407e-773f-4f0e-932f-60276e2476e2/bin/uautomizer-verify-4GaUIPS5ZU/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2024-10-31 22:09:30,794 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00be407e-773f-4f0e-932f-60276e2476e2/bin/uautomizer-verify-4GaUIPS5ZU/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-31 22:09:30,794 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:09:30,795 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:09:30,795 INFO L85 PathProgramCache]: Analyzing trace with hash 1171899538, now seen corresponding path program 2 times [2024-10-31 22:09:30,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-31 22:09:30,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1307914328] [2024-10-31 22:09:30,796 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-31 22:09:30,796 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-31 22:09:30,796 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00be407e-773f-4f0e-932f-60276e2476e2/bin/uautomizer-verify-4GaUIPS5ZU/mathsat [2024-10-31 22:09:30,799 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00be407e-773f-4f0e-932f-60276e2476e2/bin/uautomizer-verify-4GaUIPS5ZU/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-31 22:09:30,801 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00be407e-773f-4f0e-932f-60276e2476e2/bin/uautomizer-verify-4GaUIPS5ZU/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2024-10-31 22:09:30,839 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-31 22:09:30,839 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-31 22:09:30,841 INFO L255 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-31 22:09:30,843 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:09:30,955 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:09:30,959 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:09:31,149 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:09:31,149 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-31 22:09:31,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1307914328] [2024-10-31 22:09:31,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1307914328] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:09:31,150 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-31 22:09:31,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2024-10-31 22:09:31,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74107568] [2024-10-31 22:09:31,151 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-31 22:09:31,151 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-31 22:09:31,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-31 22:09:31,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-31 22:09:31,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2024-10-31 22:09:31,156 INFO L87 Difference]: Start difference. First operand 19 states and 23 transitions. Second operand has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 12 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) [2024-10-31 22:09:31,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:09:31,317 INFO L93 Difference]: Finished difference Result 35 states and 46 transitions. [2024-10-31 22:09:31,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-31 22:09:31,317 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 12 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 18 [2024-10-31 22:09:31,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:09:31,318 INFO L225 Difference]: With dead ends: 35 [2024-10-31 22:09:31,319 INFO L226 Difference]: Without dead ends: 31 [2024-10-31 22:09:31,319 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2024-10-31 22:09:31,321 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 30 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-31 22:09:31,321 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 86 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-31 22:09:31,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2024-10-31 22:09:31,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2024-10-31 22:09:31,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.3) internal successors, (39), 30 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) [2024-10-31 22:09:31,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 39 transitions. [2024-10-31 22:09:31,329 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 39 transitions. Word has length 18 [2024-10-31 22:09:31,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:09:31,330 INFO L471 AbstractCegarLoop]: Abstraction has 31 states and 39 transitions. [2024-10-31 22:09:31,330 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 12 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) [2024-10-31 22:09:31,330 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 39 transitions. [2024-10-31 22:09:31,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-10-31 22:09:31,331 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:09:31,331 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1] [2024-10-31 22:09:31,335 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00be407e-773f-4f0e-932f-60276e2476e2/bin/uautomizer-verify-4GaUIPS5ZU/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2024-10-31 22:09:31,535 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00be407e-773f-4f0e-932f-60276e2476e2/bin/uautomizer-verify-4GaUIPS5ZU/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-31 22:09:31,535 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:09:31,536 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:09:31,536 INFO L85 PathProgramCache]: Analyzing trace with hash -1720528430, now seen corresponding path program 3 times [2024-10-31 22:09:31,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-31 22:09:31,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1904499675] [2024-10-31 22:09:31,537 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-31 22:09:31,537 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-31 22:09:31,538 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00be407e-773f-4f0e-932f-60276e2476e2/bin/uautomizer-verify-4GaUIPS5ZU/mathsat [2024-10-31 22:09:31,541 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00be407e-773f-4f0e-932f-60276e2476e2/bin/uautomizer-verify-4GaUIPS5ZU/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-31 22:09:31,543 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00be407e-773f-4f0e-932f-60276e2476e2/bin/uautomizer-verify-4GaUIPS5ZU/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2024-10-31 22:09:31,612 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2024-10-31 22:09:31,612 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-31 22:09:31,614 WARN L253 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-10-31 22:09:31,626 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:09:35,740 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 40 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:09:35,740 INFO L311 TraceCheckSpWp]: Computing backward predicates...