./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/bitvector/jain_5-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5b8b694-fe17-4794-b042-99df47ef9a7a/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5b8b694-fe17-4794-b042-99df47ef9a7a/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5b8b694-fe17-4794-b042-99df47ef9a7a/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5b8b694-fe17-4794-b042-99df47ef9a7a/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/bitvector/jain_5-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5b8b694-fe17-4794-b042-99df47ef9a7a/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5b8b694-fe17-4794-b042-99df47ef9a7a/bin/uautomizer-verify-uCwYo4JHxu --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 51f18e80b5b0f6da04af12e6407c1afb08dc9b5e98545aeafa4f330f4ac3434e --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:37:52,274 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:37:52,348 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5b8b694-fe17-4794-b042-99df47ef9a7a/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-19 07:37:52,354 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:37:52,355 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:37:52,381 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:37:52,382 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:37:52,383 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:37:52,384 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:37:52,384 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:37:52,385 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:37:52,386 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:37:52,386 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:37:52,387 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:37:52,388 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:37:52,388 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:37:52,389 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:37:52,389 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:37:52,389 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:37:52,390 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:37:52,390 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:37:52,391 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:37:52,391 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:37:52,392 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:37:52,392 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:37:52,393 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:37:52,393 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:37:52,394 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:37:52,394 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:37:52,395 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:37:52,395 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:37:52,395 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:37:52,396 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:37:52,396 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:37:52,396 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:37:52,397 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:37:52,397 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:37:52,397 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:37:52,397 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:37:52,397 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_d5b8b694-fe17-4794-b042-99df47ef9a7a/bin/uautomizer-verify-uCwYo4JHxu/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5b8b694-fe17-4794-b042-99df47ef9a7a/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 51f18e80b5b0f6da04af12e6407c1afb08dc9b5e98545aeafa4f330f4ac3434e [2023-11-19 07:37:52,661 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:37:52,693 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:37:52,696 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:37:52,698 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:37:52,698 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:37:52,700 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5b8b694-fe17-4794-b042-99df47ef9a7a/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/bitvector/jain_5-2.c [2023-11-19 07:37:56,034 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:37:56,276 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:37:56,277 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5b8b694-fe17-4794-b042-99df47ef9a7a/sv-benchmarks/c/bitvector/jain_5-2.c [2023-11-19 07:37:56,288 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5b8b694-fe17-4794-b042-99df47ef9a7a/bin/uautomizer-verify-uCwYo4JHxu/data/dd05e5eac/0f0e1ee293a247db9f6d6a43bad21127/FLAG9516bdbfc [2023-11-19 07:37:56,308 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5b8b694-fe17-4794-b042-99df47ef9a7a/bin/uautomizer-verify-uCwYo4JHxu/data/dd05e5eac/0f0e1ee293a247db9f6d6a43bad21127 [2023-11-19 07:37:56,317 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:37:56,320 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:37:56,321 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:37:56,322 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:37:56,328 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:37:56,331 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:37:56" (1/1) ... [2023-11-19 07:37:56,332 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@108928 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:56, skipping insertion in model container [2023-11-19 07:37:56,332 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:37:56" (1/1) ... [2023-11-19 07:37:56,361 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:37:56,568 WARN L240 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_d5b8b694-fe17-4794-b042-99df47ef9a7a/sv-benchmarks/c/bitvector/jain_5-2.c[665,678] [2023-11-19 07:37:56,580 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:37:56,594 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:37:56,608 WARN L240 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_d5b8b694-fe17-4794-b042-99df47ef9a7a/sv-benchmarks/c/bitvector/jain_5-2.c[665,678] [2023-11-19 07:37:56,611 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:37:56,628 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:37:56,629 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:56 WrapperNode [2023-11-19 07:37:56,629 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:37:56,630 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:37:56,631 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:37:56,631 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:37:56,640 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:56" (1/1) ... [2023-11-19 07:37:56,651 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:56" (1/1) ... [2023-11-19 07:37:56,676 INFO L138 Inliner]: procedures = 13, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 28 [2023-11-19 07:37:56,676 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:37:56,678 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:37:56,678 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:37:56,678 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:37:56,689 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:56" (1/1) ... [2023-11-19 07:37:56,689 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:56" (1/1) ... [2023-11-19 07:37:56,691 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:56" (1/1) ... [2023-11-19 07:37:56,692 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:56" (1/1) ... [2023-11-19 07:37:56,695 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:56" (1/1) ... [2023-11-19 07:37:56,699 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:56" (1/1) ... [2023-11-19 07:37:56,700 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:56" (1/1) ... [2023-11-19 07:37:56,701 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:56" (1/1) ... [2023-11-19 07:37:56,709 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:37:56,710 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:37:56,710 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:37:56,711 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:37:56,712 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:56" (1/1) ... [2023-11-19 07:37:56,719 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:37:56,731 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5b8b694-fe17-4794-b042-99df47ef9a7a/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:37:56,747 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5b8b694-fe17-4794-b042-99df47ef9a7a/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:37:56,750 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5b8b694-fe17-4794-b042-99df47ef9a7a/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:37:56,787 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:37:56,787 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:37:56,788 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:37:56,789 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:37:56,870 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:37:56,873 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:37:56,976 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:37:56,984 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:37:56,984 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 07:37:56,987 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:37:56 BoogieIcfgContainer [2023-11-19 07:37:56,988 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:37:56,990 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:37:56,991 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:37:56,994 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:37:56,994 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:37:56" (1/3) ... [2023-11-19 07:37:56,995 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ad7bcec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:37:56, skipping insertion in model container [2023-11-19 07:37:56,995 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:56" (2/3) ... [2023-11-19 07:37:56,996 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ad7bcec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:37:56, skipping insertion in model container [2023-11-19 07:37:56,996 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:37:56" (3/3) ... [2023-11-19 07:37:56,997 INFO L112 eAbstractionObserver]: Analyzing ICFG jain_5-2.c [2023-11-19 07:37:57,032 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:37:57,032 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 07:37:57,094 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:37:57,104 INFO L357 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, mHoare=true, 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;@2a0a6ef, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:37:57,105 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 07:37:57,111 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:37:57,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-19 07:37:57,118 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:37:57,119 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 07:37:57,120 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:37:57,126 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:37:57,126 INFO L85 PathProgramCache]: Analyzing trace with hash 28699754, now seen corresponding path program 1 times [2023-11-19 07:37:57,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:37:57,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766181864] [2023-11-19 07:37:57,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:57,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:37:57,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:37:57,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:37:57,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:37:57,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766181864] [2023-11-19 07:37:57,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766181864] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:37:57,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:37:57,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:37:57,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458393785] [2023-11-19 07:37:57,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:37:57,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:37:57,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:37:57,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:37:57,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:37:57,676 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:37:57,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:37:57,735 INFO L93 Difference]: Finished difference Result 18 states and 26 transitions. [2023-11-19 07:37:57,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:37:57,738 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2023-11-19 07:37:57,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:37:57,747 INFO L225 Difference]: With dead ends: 18 [2023-11-19 07:37:57,747 INFO L226 Difference]: Without dead ends: 9 [2023-11-19 07:37:57,750 INFO L412 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 [2023-11-19 07:37:57,753 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 1 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:37:57,754 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 12 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:37:57,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2023-11-19 07:37:57,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2023-11-19 07:37:57,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:37:57,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2023-11-19 07:37:57,783 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2023-11-19 07:37:57,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:37:57,784 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2023-11-19 07:37:57,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:37:57,784 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2023-11-19 07:37:57,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-19 07:37:57,785 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:37:57,785 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2023-11-19 07:37:57,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:37:57,785 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:37:57,786 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:37:57,786 INFO L85 PathProgramCache]: Analyzing trace with hash 300686882, now seen corresponding path program 1 times [2023-11-19 07:37:57,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:37:57,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189754106] [2023-11-19 07:37:57,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:57,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:37:57,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:37:57,989 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:37:57,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:37:57,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189754106] [2023-11-19 07:37:57,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189754106] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:37:57,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2028962163] [2023-11-19 07:37:57,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:57,991 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:37:57,991 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5b8b694-fe17-4794-b042-99df47ef9a7a/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:37:57,994 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5b8b694-fe17-4794-b042-99df47ef9a7a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:37:58,004 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5b8b694-fe17-4794-b042-99df47ef9a7a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 07:37:58,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:37:58,059 INFO L262 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-19 07:37:58,065 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:37:58,200 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:37:58,201 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:37:58,288 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:37:58,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2028962163] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:37:58,289 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:37:58,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2023-11-19 07:37:58,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149844190] [2023-11-19 07:37:58,291 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:37:58,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-19 07:37:58,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:37:58,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-19 07:37:58,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-11-19 07:37:58,293 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 9 states, 9 states have (on average 2.0) internal successors, (18), 9 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:37:58,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:37:58,416 INFO L93 Difference]: Finished difference Result 21 states and 23 transitions. [2023-11-19 07:37:58,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-19 07:37:58,417 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.0) internal successors, (18), 9 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-11-19 07:37:58,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:37:58,418 INFO L225 Difference]: With dead ends: 21 [2023-11-19 07:37:58,418 INFO L226 Difference]: Without dead ends: 19 [2023-11-19 07:37:58,419 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2023-11-19 07:37:58,420 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 6 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:37:58,421 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 24 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:37:58,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2023-11-19 07:37:58,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 18. [2023-11-19 07:37:58,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.0588235294117647) internal successors, (18), 17 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:37:58,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2023-11-19 07:37:58,428 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 8 [2023-11-19 07:37:58,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:37:58,429 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2023-11-19 07:37:58,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.0) internal successors, (18), 9 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:37:58,429 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2023-11-19 07:37:58,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-19 07:37:58,431 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:37:58,431 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1] [2023-11-19 07:37:58,458 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5b8b694-fe17-4794-b042-99df47ef9a7a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 07:37:58,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5b8b694-fe17-4794-b042-99df47ef9a7a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-11-19 07:37:58,647 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:37:58,648 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:37:58,648 INFO L85 PathProgramCache]: Analyzing trace with hash -1156434326, now seen corresponding path program 2 times [2023-11-19 07:37:58,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:37:58,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837742793] [2023-11-19 07:37:58,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:58,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:37:58,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:37:58,939 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:37:58,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:37:58,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837742793] [2023-11-19 07:37:58,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1837742793] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:37:58,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [586671258] [2023-11-19 07:37:58,940 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 07:37:58,940 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:37:58,941 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5b8b694-fe17-4794-b042-99df47ef9a7a/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:37:58,942 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5b8b694-fe17-4794-b042-99df47ef9a7a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:37:58,947 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5b8b694-fe17-4794-b042-99df47ef9a7a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 07:37:59,013 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-19 07:37:59,013 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:37:59,021 INFO L262 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 33 conjunts are in the unsatisfiable core [2023-11-19 07:37:59,024 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:37:59,253 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:37:59,254 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:37:59,770 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:37:59,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [586671258] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:37:59,771 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:37:59,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 20 [2023-11-19 07:37:59,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300067975] [2023-11-19 07:37:59,772 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:37:59,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-19 07:37:59,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:37:59,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-19 07:37:59,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=291, Unknown=0, NotChecked=0, Total=380 [2023-11-19 07:37:59,775 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand has 20 states, 20 states have (on average 2.25) internal successors, (45), 20 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:38:04,145 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-19 07:38:04,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:38:04,923 INFO L93 Difference]: Finished difference Result 39 states and 44 transitions. [2023-11-19 07:38:04,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-19 07:38:04,925 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.25) internal successors, (45), 20 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2023-11-19 07:38:04,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:38:04,926 INFO L225 Difference]: With dead ends: 39 [2023-11-19 07:38:04,926 INFO L226 Difference]: Without dead ends: 37 [2023-11-19 07:38:04,927 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 212 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=273, Invalid=719, Unknown=0, NotChecked=0, Total=992 [2023-11-19 07:38:04,929 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 22 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 16 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-11-19 07:38:04,930 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 62 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 91 Invalid, 1 Unknown, 0 Unchecked, 2.7s Time] [2023-11-19 07:38:04,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2023-11-19 07:38:04,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 36. [2023-11-19 07:38:04,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.0285714285714285) internal successors, (36), 35 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:38:04,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 36 transitions. [2023-11-19 07:38:04,944 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 36 transitions. Word has length 17 [2023-11-19 07:38:04,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:38:04,945 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 36 transitions. [2023-11-19 07:38:04,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.25) internal successors, (45), 20 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:38:04,946 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 36 transitions. [2023-11-19 07:38:04,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-11-19 07:38:04,948 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:38:04,948 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 1, 1, 1, 1] [2023-11-19 07:38:04,973 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5b8b694-fe17-4794-b042-99df47ef9a7a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-19 07:38:05,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5b8b694-fe17-4794-b042-99df47ef9a7a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:38:05,167 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:38:05,168 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:38:05,168 INFO L85 PathProgramCache]: Analyzing trace with hash 1353352554, now seen corresponding path program 3 times [2023-11-19 07:38:05,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:38:05,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730999505] [2023-11-19 07:38:05,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:38:05,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:38:05,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:05,841 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 0 proven. 155 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:38:05,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:38:05,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730999505] [2023-11-19 07:38:05,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730999505] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:38:05,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1012403016] [2023-11-19 07:38:05,848 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-19 07:38:05,849 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:38:05,849 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5b8b694-fe17-4794-b042-99df47ef9a7a/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:38:05,851 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5b8b694-fe17-4794-b042-99df47ef9a7a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:38:05,875 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5b8b694-fe17-4794-b042-99df47ef9a7a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 07:38:06,189 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2023-11-19 07:38:06,189 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:38:06,191 INFO L262 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 57 conjunts are in the unsatisfiable core [2023-11-19 07:38:06,195 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:38:06,655 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 0 proven. 155 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:38:06,656 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:38:12,925 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 0 proven. 155 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:38:12,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1012403016] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:38:12,925 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:38:12,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 15] total 38 [2023-11-19 07:38:12,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770741117] [2023-11-19 07:38:12,926 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:38:12,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-11-19 07:38:12,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:38:12,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-11-19 07:38:12,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=264, Invalid=1142, Unknown=0, NotChecked=0, Total=1406 [2023-11-19 07:38:12,930 INFO L87 Difference]: Start difference. First operand 36 states and 36 transitions. Second operand has 38 states, 38 states have (on average 2.6052631578947367) internal successors, (99), 38 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:38:15,336 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 (= (mod (+ 40 |c_ULTIMATE.start_main_~x~0#1| (* |c_ULTIMATE.start_main_~y~0#1| 5)) 4294967296) 30)) (.cse5 (= (mod (+ |c_ULTIMATE.start_main_~x~0#1| (* |c_ULTIMATE.start_main_~y~0#1| 2) 4) 4294967296) 30)) (.cse1 (= (mod (+ |c_ULTIMATE.start_main_~x~0#1| (* |c_ULTIMATE.start_main_~y~0#1| 6) 60) 4294967296) 30)) (.cse2 (= 30 (mod (+ |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~x~0#1|) 4294967296))) (.cse4 (= (mod (+ |c_ULTIMATE.start_main_~x~0#1| 12 (* |c_ULTIMATE.start_main_~y~0#1| 3)) 4294967296) 30)) (.cse3 (= 30 (mod (+ |c_ULTIMATE.start_main_~x~0#1| (* |c_ULTIMATE.start_main_~y~0#1| 4) 24) 4294967296)))) (and (= |c_ULTIMATE.start___VERIFIER_assert_~cond#1| 1) (or .cse0 (not (= (mod (+ (* |c_ULTIMATE.start_main_~y~0#1| 10) |c_ULTIMATE.start_main_~x~0#1| 180) 4294967296) 30))) (or (not (= (mod (+ |c_ULTIMATE.start_main_~x~0#1| (* |c_ULTIMATE.start_main_~y~0#1| 11) 220) 4294967296) 30)) .cse1) (not .cse2) (or (not (= 30 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 144 (* |c_ULTIMATE.start_main_~y~0#1| 9)) 4294967296))) .cse3) (or (not (= 30 (mod (+ 112 |c_ULTIMATE.start_main_~x~0#1| (* |c_ULTIMATE.start_main_~y~0#1| 8)) 4294967296))) .cse4) (or .cse5 (not (= (mod (+ |c_ULTIMATE.start_main_~x~0#1| (* |c_ULTIMATE.start_main_~y~0#1| 7) 84) 4294967296) 30))) (not .cse0) (not .cse5) (or (not .cse1) .cse2) (not .cse4) (not .cse3))) is different from false [2023-11-19 07:38:17,351 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 (= (mod (+ 40 |c_ULTIMATE.start_main_~x~0#1| (* |c_ULTIMATE.start_main_~y~0#1| 5)) 4294967296) 30)) (.cse4 (= (mod (+ |c_ULTIMATE.start_main_~x~0#1| (* |c_ULTIMATE.start_main_~y~0#1| 2) 4) 4294967296) 30)) (.cse1 (= 30 (mod (+ |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~x~0#1|) 4294967296))) (.cse3 (= (mod (+ |c_ULTIMATE.start_main_~x~0#1| 12 (* |c_ULTIMATE.start_main_~y~0#1| 3)) 4294967296) 30)) (.cse2 (= 30 (mod (+ |c_ULTIMATE.start_main_~x~0#1| (* |c_ULTIMATE.start_main_~y~0#1| 4) 24) 4294967296)))) (and (or .cse0 (not (= (mod (+ (* |c_ULTIMATE.start_main_~y~0#1| 10) |c_ULTIMATE.start_main_~x~0#1| 180) 4294967296) 30))) (not .cse1) (or (not (= 30 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 144 (* |c_ULTIMATE.start_main_~y~0#1| 9)) 4294967296))) .cse2) (or (not (= 30 (mod (+ 112 |c_ULTIMATE.start_main_~x~0#1| (* |c_ULTIMATE.start_main_~y~0#1| 8)) 4294967296))) .cse3) (or .cse4 (not (= (mod (+ |c_ULTIMATE.start_main_~x~0#1| (* |c_ULTIMATE.start_main_~y~0#1| 7) 84) 4294967296) 30))) (not .cse0) (not .cse4) (or (not (= (mod (+ |c_ULTIMATE.start_main_~x~0#1| (* |c_ULTIMATE.start_main_~y~0#1| 6) 60) 4294967296) 30)) .cse1) (not .cse3) (not .cse2))) is different from false [2023-11-19 07:38:50,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:38:50,001 INFO L93 Difference]: Finished difference Result 42 states and 44 transitions. [2023-11-19 07:38:50,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-11-19 07:38:50,001 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 2.6052631578947367) internal successors, (99), 38 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2023-11-19 07:38:50,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:38:50,002 INFO L225 Difference]: With dead ends: 42 [2023-11-19 07:38:50,002 INFO L226 Difference]: Without dead ends: 0 [2023-11-19 07:38:50,004 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 443 ImplicationChecksByTransitivity, 43.2s TimeCoverageRelationStatistics Valid=430, Invalid=1738, Unknown=2, NotChecked=182, Total=2352 [2023-11-19 07:38:50,005 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 20 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 412 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 504 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 412 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 81 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 07:38:50,005 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 198 Invalid, 504 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 412 Invalid, 0 Unknown, 81 Unchecked, 0.2s Time] [2023-11-19 07:38:50,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-19 07:38:50,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-19 07:38:50,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:38:50,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-19 07:38:50,007 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 35 [2023-11-19 07:38:50,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:38:50,007 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-19 07:38:50,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 2.6052631578947367) internal successors, (99), 38 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:38:50,008 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-19 07:38:50,008 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-19 07:38:50,010 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-19 07:38:50,023 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5b8b694-fe17-4794-b042-99df47ef9a7a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-19 07:38:50,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5b8b694-fe17-4794-b042-99df47ef9a7a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:38:50,219 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.