./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.twocount32.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e7bb482b 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_22083354-7848-440f-9016-104776cadd7b/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22083354-7848-440f-9016-104776cadd7b/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22083354-7848-440f-9016-104776cadd7b/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22083354-7848-440f-9016-104776cadd7b/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.twocount32.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22083354-7848-440f-9016-104776cadd7b/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22083354-7848-440f-9016-104776cadd7b/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 1f88bd3867028d60c5c1c8fa67c55aaa517a9782eae2d2c8498cbbc5893e8cf0 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 21:14:51,265 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 21:14:51,383 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22083354-7848-440f-9016-104776cadd7b/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-06 21:14:51,391 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 21:14:51,392 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 21:14:51,434 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 21:14:51,435 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 21:14:51,436 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 21:14:51,437 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 21:14:51,442 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 21:14:51,443 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 21:14:51,444 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 21:14:51,444 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 21:14:51,446 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 21:14:51,447 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 21:14:51,447 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 21:14:51,448 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 21:14:51,448 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 21:14:51,449 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 21:14:51,449 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 21:14:51,450 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 21:14:51,451 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 21:14:51,452 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 21:14:51,452 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 21:14:51,453 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 21:14:51,453 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 21:14:51,454 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 21:14:51,454 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 21:14:51,455 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 21:14:51,455 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 21:14:51,457 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 21:14:51,457 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 21:14:51,458 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 21:14:51,458 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 21:14:51,458 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 21:14:51,459 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 21:14:51,459 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_22083354-7848-440f-9016-104776cadd7b/bin/uautomizer-verify-WvqO1wxjHP/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22083354-7848-440f-9016-104776cadd7b/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1f88bd3867028d60c5c1c8fa67c55aaa517a9782eae2d2c8498cbbc5893e8cf0 [2023-11-06 21:14:51,816 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 21:14:51,848 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 21:14:51,852 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 21:14:51,872 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 21:14:51,873 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 21:14:51,874 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22083354-7848-440f-9016-104776cadd7b/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.twocount32.c [2023-11-06 21:14:55,173 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 21:14:55,402 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 21:14:55,403 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22083354-7848-440f-9016-104776cadd7b/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.twocount32.c [2023-11-06 21:14:55,412 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22083354-7848-440f-9016-104776cadd7b/bin/uautomizer-verify-WvqO1wxjHP/data/94f9f7da7/845da80b09a84acea41db52409cb0690/FLAG8a9978b70 [2023-11-06 21:14:55,428 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22083354-7848-440f-9016-104776cadd7b/bin/uautomizer-verify-WvqO1wxjHP/data/94f9f7da7/845da80b09a84acea41db52409cb0690 [2023-11-06 21:14:55,431 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 21:14:55,433 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 21:14:55,434 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 21:14:55,434 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 21:14:55,440 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 21:14:55,441 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:14:55" (1/1) ... [2023-11-06 21:14:55,442 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@254f7bbe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:14:55, skipping insertion in model container [2023-11-06 21:14:55,443 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:14:55" (1/1) ... [2023-11-06 21:14:55,467 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 21:14:55,654 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_22083354-7848-440f-9016-104776cadd7b/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.twocount32.c[1260,1273] [2023-11-06 21:14:55,708 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 21:14:55,728 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 21:14:55,743 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_22083354-7848-440f-9016-104776cadd7b/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.twocount32.c[1260,1273] [2023-11-06 21:14:55,776 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 21:14:55,797 INFO L206 MainTranslator]: Completed translation [2023-11-06 21:14:55,798 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:14:55 WrapperNode [2023-11-06 21:14:55,798 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 21:14:55,799 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 21:14:55,800 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 21:14:55,800 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 21:14:55,808 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:14:55" (1/1) ... [2023-11-06 21:14:55,830 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:14:55" (1/1) ... [2023-11-06 21:14:55,880 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 144 [2023-11-06 21:14:55,880 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 21:14:55,881 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 21:14:55,882 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 21:14:55,882 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 21:14:55,892 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:14:55" (1/1) ... [2023-11-06 21:14:55,892 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:14:55" (1/1) ... [2023-11-06 21:14:55,896 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:14:55" (1/1) ... [2023-11-06 21:14:55,896 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:14:55" (1/1) ... [2023-11-06 21:14:55,906 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:14:55" (1/1) ... [2023-11-06 21:14:55,910 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:14:55" (1/1) ... [2023-11-06 21:14:55,915 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:14:55" (1/1) ... [2023-11-06 21:14:55,932 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:14:55" (1/1) ... [2023-11-06 21:14:55,939 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 21:14:55,940 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 21:14:55,941 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 21:14:55,941 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 21:14:55,942 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:14:55" (1/1) ... [2023-11-06 21:14:55,956 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 21:14:55,970 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22083354-7848-440f-9016-104776cadd7b/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:14:55,988 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22083354-7848-440f-9016-104776cadd7b/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 21:14:56,024 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22083354-7848-440f-9016-104776cadd7b/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 21:14:56,039 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 21:14:56,040 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 21:14:56,040 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 21:14:56,040 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 21:14:56,168 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 21:14:56,174 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 21:14:56,587 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 21:14:56,593 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 21:14:56,594 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-06 21:14:56,596 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:14:56 BoogieIcfgContainer [2023-11-06 21:14:56,596 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 21:14:56,599 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 21:14:56,599 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 21:14:56,603 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 21:14:56,603 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 09:14:55" (1/3) ... [2023-11-06 21:14:56,604 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22a19db1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:14:56, skipping insertion in model container [2023-11-06 21:14:56,604 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:14:55" (2/3) ... [2023-11-06 21:14:56,604 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22a19db1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:14:56, skipping insertion in model container [2023-11-06 21:14:56,605 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:14:56" (3/3) ... [2023-11-06 21:14:56,606 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.twocount32.c [2023-11-06 21:14:56,627 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 21:14:56,627 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-06 21:14:56,690 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 21:14:56,723 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=LoopsAndPotentialCycles, 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;@3f8bd634, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 21:14:56,724 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-06 21:14:56,728 INFO L276 IsEmpty]: Start isEmpty. Operand has 35 states, 33 states have (on average 1.606060606060606) internal successors, (53), 34 states have internal predecessors, (53), 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) [2023-11-06 21:14:56,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-06 21:14:56,735 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:14:56,737 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:14:56,738 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:14:56,744 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:14:56,745 INFO L85 PathProgramCache]: Analyzing trace with hash -114987766, now seen corresponding path program 1 times [2023-11-06 21:14:56,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:14:56,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441568877] [2023-11-06 21:14:56,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:14:56,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:14:56,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:14:57,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:14:57,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:14:57,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441568877] [2023-11-06 21:14:57,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441568877] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:14:57,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:14:57,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 21:14:57,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539205810] [2023-11-06 21:14:57,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:14:57,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 21:14:57,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:14:57,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 21:14:57,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 21:14:57,349 INFO L87 Difference]: Start difference. First operand has 35 states, 33 states have (on average 1.606060606060606) internal successors, (53), 34 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:14:57,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:14:57,394 INFO L93 Difference]: Finished difference Result 60 states and 94 transitions. [2023-11-06 21:14:57,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 21:14:57,397 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2023-11-06 21:14:57,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:14:57,406 INFO L225 Difference]: With dead ends: 60 [2023-11-06 21:14:57,406 INFO L226 Difference]: Without dead ends: 33 [2023-11-06 21:14:57,409 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 [2023-11-06 21:14:57,413 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 1 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 21:14:57,414 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 129 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 21:14:57,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2023-11-06 21:14:57,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2023-11-06 21:14:57,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.53125) internal successors, (49), 32 states have internal predecessors, (49), 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) [2023-11-06 21:14:57,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 49 transitions. [2023-11-06 21:14:57,450 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 49 transitions. Word has length 15 [2023-11-06 21:14:57,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:14:57,451 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 49 transitions. [2023-11-06 21:14:57,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:14:57,451 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 49 transitions. [2023-11-06 21:14:57,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-06 21:14:57,452 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:14:57,452 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:14:57,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 21:14:57,453 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:14:57,454 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:14:57,454 INFO L85 PathProgramCache]: Analyzing trace with hash 732071558, now seen corresponding path program 1 times [2023-11-06 21:14:57,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:14:57,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477604528] [2023-11-06 21:14:57,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:14:57,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:14:57,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:14:57,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:14:57,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:14:57,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477604528] [2023-11-06 21:14:57,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477604528] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:14:57,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:14:57,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 21:14:57,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714224337] [2023-11-06 21:14:57,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:14:57,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 21:14:57,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:14:57,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 21:14:57,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 21:14:57,675 INFO L87 Difference]: Start difference. First operand 33 states and 49 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 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) [2023-11-06 21:14:57,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:14:57,727 INFO L93 Difference]: Finished difference Result 61 states and 90 transitions. [2023-11-06 21:14:57,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 21:14:57,728 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 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) Word has length 16 [2023-11-06 21:14:57,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:14:57,729 INFO L225 Difference]: With dead ends: 61 [2023-11-06 21:14:57,730 INFO L226 Difference]: Without dead ends: 36 [2023-11-06 21:14:57,735 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 21:14:57,738 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 1 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 21:14:57,739 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 126 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 21:14:57,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2023-11-06 21:14:57,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2023-11-06 21:14:57,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.5) internal successors, (51), 34 states have internal predecessors, (51), 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) [2023-11-06 21:14:57,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 51 transitions. [2023-11-06 21:14:57,745 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 51 transitions. Word has length 16 [2023-11-06 21:14:57,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:14:57,748 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 51 transitions. [2023-11-06 21:14:57,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 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) [2023-11-06 21:14:57,748 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 51 transitions. [2023-11-06 21:14:57,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-06 21:14:57,750 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:14:57,751 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:14:57,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 21:14:57,751 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:14:57,752 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:14:57,752 INFO L85 PathProgramCache]: Analyzing trace with hash 1008949412, now seen corresponding path program 1 times [2023-11-06 21:14:57,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:14:57,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418283187] [2023-11-06 21:14:57,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:14:57,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:14:57,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:14:58,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:14:58,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:14:58,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418283187] [2023-11-06 21:14:58,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418283187] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:14:58,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:14:58,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-06 21:14:58,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064915267] [2023-11-06 21:14:58,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:14:58,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 21:14:58,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:14:58,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 21:14:58,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-06 21:14:58,270 INFO L87 Difference]: Start difference. First operand 35 states and 51 transitions. Second operand has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 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) [2023-11-06 21:14:58,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:14:58,403 INFO L93 Difference]: Finished difference Result 85 states and 124 transitions. [2023-11-06 21:14:58,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 21:14:58,404 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 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 [2023-11-06 21:14:58,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:14:58,405 INFO L225 Difference]: With dead ends: 85 [2023-11-06 21:14:58,406 INFO L226 Difference]: Without dead ends: 58 [2023-11-06 21:14:58,406 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-11-06 21:14:58,408 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 125 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 21:14:58,409 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 172 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 21:14:58,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2023-11-06 21:14:58,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 40. [2023-11-06 21:14:58,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 39 states have (on average 1.4871794871794872) internal successors, (58), 39 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) [2023-11-06 21:14:58,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 58 transitions. [2023-11-06 21:14:58,422 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 58 transitions. Word has length 17 [2023-11-06 21:14:58,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:14:58,423 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 58 transitions. [2023-11-06 21:14:58,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 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) [2023-11-06 21:14:58,427 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 58 transitions. [2023-11-06 21:14:58,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-11-06 21:14:58,428 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:14:58,429 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:14:58,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 21:14:58,429 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:14:58,430 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:14:58,430 INFO L85 PathProgramCache]: Analyzing trace with hash -181438892, now seen corresponding path program 1 times [2023-11-06 21:14:58,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:14:58,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579940318] [2023-11-06 21:14:58,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:14:58,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:14:58,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:14:59,098 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:14:59,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:14:59,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579940318] [2023-11-06 21:14:59,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579940318] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:14:59,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:14:59,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 21:14:59,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687740492] [2023-11-06 21:14:59,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:14:59,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 21:14:59,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:14:59,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 21:14:59,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-06 21:14:59,102 INFO L87 Difference]: Start difference. First operand 40 states and 58 transitions. Second operand has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 7 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) [2023-11-06 21:14:59,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:14:59,380 INFO L93 Difference]: Finished difference Result 97 states and 139 transitions. [2023-11-06 21:14:59,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 21:14:59,381 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 7 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 32 [2023-11-06 21:14:59,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:14:59,382 INFO L225 Difference]: With dead ends: 97 [2023-11-06 21:14:59,382 INFO L226 Difference]: Without dead ends: 70 [2023-11-06 21:14:59,383 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2023-11-06 21:14:59,384 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 131 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-06 21:14:59,385 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 118 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-06 21:14:59,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2023-11-06 21:14:59,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 48. [2023-11-06 21:14:59,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 47 states have (on average 1.4042553191489362) internal successors, (66), 47 states have internal predecessors, (66), 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) [2023-11-06 21:14:59,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 66 transitions. [2023-11-06 21:14:59,393 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 66 transitions. Word has length 32 [2023-11-06 21:14:59,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:14:59,393 INFO L495 AbstractCegarLoop]: Abstraction has 48 states and 66 transitions. [2023-11-06 21:14:59,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 7 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) [2023-11-06 21:14:59,394 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 66 transitions. [2023-11-06 21:14:59,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-11-06 21:14:59,395 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:14:59,396 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:14:59,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 21:14:59,396 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:14:59,396 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:14:59,397 INFO L85 PathProgramCache]: Analyzing trace with hash 1240964152, now seen corresponding path program 1 times [2023-11-06 21:14:59,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:14:59,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652615886] [2023-11-06 21:14:59,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:14:59,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:14:59,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:14:59,874 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:14:59,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:14:59,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652615886] [2023-11-06 21:14:59,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652615886] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:14:59,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:14:59,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-06 21:14:59,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429790813] [2023-11-06 21:14:59,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:14:59,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 21:14:59,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:14:59,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 21:14:59,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-06 21:14:59,879 INFO L87 Difference]: Start difference. First operand 48 states and 66 transitions. Second operand has 8 states, 8 states have (on average 4.125) internal successors, (33), 8 states have internal predecessors, (33), 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) [2023-11-06 21:15:00,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:15:00,178 INFO L93 Difference]: Finished difference Result 122 states and 172 transitions. [2023-11-06 21:15:00,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-06 21:15:00,178 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.125) internal successors, (33), 8 states have internal predecessors, (33), 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 33 [2023-11-06 21:15:00,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:15:00,180 INFO L225 Difference]: With dead ends: 122 [2023-11-06 21:15:00,180 INFO L226 Difference]: Without dead ends: 95 [2023-11-06 21:15:00,180 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2023-11-06 21:15:00,182 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 156 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 243 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-06 21:15:00,182 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 243 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-06 21:15:00,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2023-11-06 21:15:00,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 59. [2023-11-06 21:15:00,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 58 states have (on average 1.3793103448275863) internal successors, (80), 58 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:15:00,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 80 transitions. [2023-11-06 21:15:00,193 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 80 transitions. Word has length 33 [2023-11-06 21:15:00,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:15:00,194 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 80 transitions. [2023-11-06 21:15:00,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.125) internal successors, (33), 8 states have internal predecessors, (33), 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) [2023-11-06 21:15:00,195 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 80 transitions. [2023-11-06 21:15:00,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-11-06 21:15:00,196 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:15:00,197 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:15:00,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 21:15:00,197 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:15:00,198 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:15:00,198 INFO L85 PathProgramCache]: Analyzing trace with hash 1705375244, now seen corresponding path program 1 times [2023-11-06 21:15:00,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:15:00,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479244073] [2023-11-06 21:15:00,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:15:00,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:15:00,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:15:00,695 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:15:00,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:15:00,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479244073] [2023-11-06 21:15:00,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479244073] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:15:00,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:15:00,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 21:15:00,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685520604] [2023-11-06 21:15:00,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:15:00,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 21:15:00,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:15:00,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 21:15:00,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-06 21:15:00,698 INFO L87 Difference]: Start difference. First operand 59 states and 80 transitions. Second operand has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 7 states have internal predecessors, (33), 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) [2023-11-06 21:15:00,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:15:00,944 INFO L93 Difference]: Finished difference Result 118 states and 165 transitions. [2023-11-06 21:15:00,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 21:15:00,944 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 7 states have internal predecessors, (33), 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 33 [2023-11-06 21:15:00,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:15:00,945 INFO L225 Difference]: With dead ends: 118 [2023-11-06 21:15:00,946 INFO L226 Difference]: Without dead ends: 91 [2023-11-06 21:15:00,946 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2023-11-06 21:15:00,947 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 157 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 21:15:00,948 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 157 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 21:15:00,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2023-11-06 21:15:00,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 59. [2023-11-06 21:15:00,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 58 states have (on average 1.3793103448275863) internal successors, (80), 58 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:15:00,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 80 transitions. [2023-11-06 21:15:00,955 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 80 transitions. Word has length 33 [2023-11-06 21:15:00,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:15:00,956 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 80 transitions. [2023-11-06 21:15:00,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 7 states have internal predecessors, (33), 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) [2023-11-06 21:15:00,956 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 80 transitions. [2023-11-06 21:15:00,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-11-06 21:15:00,958 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:15:00,958 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:15:00,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-06 21:15:00,958 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:15:00,959 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:15:00,959 INFO L85 PathProgramCache]: Analyzing trace with hash 1893355322, now seen corresponding path program 1 times [2023-11-06 21:15:00,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:15:00,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520958506] [2023-11-06 21:15:00,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:15:00,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:15:00,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:15:01,480 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:15:01,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:15:01,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520958506] [2023-11-06 21:15:01,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [520958506] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:15:01,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:15:01,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 21:15:01,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589138895] [2023-11-06 21:15:01,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:15:01,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 21:15:01,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:15:01,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 21:15:01,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-06 21:15:01,483 INFO L87 Difference]: Start difference. First operand 59 states and 80 transitions. Second operand has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 7 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:15:01,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:15:01,735 INFO L93 Difference]: Finished difference Result 105 states and 147 transitions. [2023-11-06 21:15:01,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 21:15:01,736 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 7 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2023-11-06 21:15:01,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:15:01,737 INFO L225 Difference]: With dead ends: 105 [2023-11-06 21:15:01,737 INFO L226 Difference]: Without dead ends: 74 [2023-11-06 21:15:01,738 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2023-11-06 21:15:01,739 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 140 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 21:15:01,739 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 109 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 21:15:01,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2023-11-06 21:15:01,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 59. [2023-11-06 21:15:01,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 58 states have (on average 1.3620689655172413) internal successors, (79), 58 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:15:01,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 79 transitions. [2023-11-06 21:15:01,747 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 79 transitions. Word has length 34 [2023-11-06 21:15:01,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:15:01,747 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 79 transitions. [2023-11-06 21:15:01,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 7 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:15:01,747 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 79 transitions. [2023-11-06 21:15:01,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-11-06 21:15:01,749 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:15:01,749 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:15:01,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-06 21:15:01,749 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:15:01,749 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:15:01,750 INFO L85 PathProgramCache]: Analyzing trace with hash -100789384, now seen corresponding path program 1 times [2023-11-06 21:15:01,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:15:01,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322256350] [2023-11-06 21:15:01,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:15:01,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:15:01,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:15:02,079 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:15:02,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:15:02,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322256350] [2023-11-06 21:15:02,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322256350] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 21:15:02,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1202675301] [2023-11-06 21:15:02,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:15:02,080 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:15:02,080 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22083354-7848-440f-9016-104776cadd7b/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:15:02,087 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22083354-7848-440f-9016-104776cadd7b/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:15:02,110 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22083354-7848-440f-9016-104776cadd7b/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 21:15:02,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:15:02,203 WARN L260 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 100 conjunts are in the unsatisfiable core [2023-11-06 21:15:02,211 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:15:02,944 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:15:02,944 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 21:15:04,222 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:15:04,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1202675301] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 21:15:04,222 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 21:15:04,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 17, 20] total 41 [2023-11-06 21:15:04,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732866709] [2023-11-06 21:15:04,223 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 21:15:04,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2023-11-06 21:15:04,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:15:04,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2023-11-06 21:15:04,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=353, Invalid=1287, Unknown=0, NotChecked=0, Total=1640 [2023-11-06 21:15:04,226 INFO L87 Difference]: Start difference. First operand 59 states and 79 transitions. Second operand has 41 states, 41 states have (on average 2.317073170731707) internal successors, (95), 41 states have internal predecessors, (95), 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) [2023-11-06 21:15:06,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:15:06,994 INFO L93 Difference]: Finished difference Result 233 states and 331 transitions. [2023-11-06 21:15:06,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2023-11-06 21:15:06,995 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 2.317073170731707) internal successors, (95), 41 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2023-11-06 21:15:06,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:15:06,998 INFO L225 Difference]: With dead ends: 233 [2023-11-06 21:15:06,998 INFO L226 Difference]: Without dead ends: 206 [2023-11-06 21:15:07,002 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2395 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1774, Invalid=6598, Unknown=0, NotChecked=0, Total=8372 [2023-11-06 21:15:07,003 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 794 mSDsluCounter, 494 mSDsCounter, 0 mSdLazyCounter, 1044 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 794 SdHoareTripleChecker+Valid, 530 SdHoareTripleChecker+Invalid, 1082 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 1044 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-06 21:15:07,004 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [794 Valid, 530 Invalid, 1082 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 1044 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-06 21:15:07,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2023-11-06 21:15:07,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 93. [2023-11-06 21:15:07,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 92 states have (on average 1.3478260869565217) internal successors, (124), 92 states have internal predecessors, (124), 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) [2023-11-06 21:15:07,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 124 transitions. [2023-11-06 21:15:07,016 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 124 transitions. Word has length 34 [2023-11-06 21:15:07,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:15:07,017 INFO L495 AbstractCegarLoop]: Abstraction has 93 states and 124 transitions. [2023-11-06 21:15:07,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 2.317073170731707) internal successors, (95), 41 states have internal predecessors, (95), 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) [2023-11-06 21:15:07,018 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 124 transitions. [2023-11-06 21:15:07,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-11-06 21:15:07,019 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:15:07,019 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:15:07,028 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22083354-7848-440f-9016-104776cadd7b/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-06 21:15:07,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22083354-7848-440f-9016-104776cadd7b/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:15:07,226 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:15:07,226 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:15:07,227 INFO L85 PathProgramCache]: Analyzing trace with hash -1339289250, now seen corresponding path program 1 times [2023-11-06 21:15:07,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:15:07,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579642998] [2023-11-06 21:15:07,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:15:07,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:15:07,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:15:07,760 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:15:07,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:15:07,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579642998] [2023-11-06 21:15:07,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579642998] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:15:07,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:15:07,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-06 21:15:07,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756681457] [2023-11-06 21:15:07,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:15:07,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 21:15:07,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:15:07,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 21:15:07,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-06 21:15:07,769 INFO L87 Difference]: Start difference. First operand 93 states and 124 transitions. Second operand has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:15:07,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:15:07,936 INFO L93 Difference]: Finished difference Result 164 states and 222 transitions. [2023-11-06 21:15:07,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 21:15:07,937 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2023-11-06 21:15:07,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:15:07,938 INFO L225 Difference]: With dead ends: 164 [2023-11-06 21:15:07,938 INFO L226 Difference]: Without dead ends: 105 [2023-11-06 21:15:07,939 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-11-06 21:15:07,940 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 89 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 21:15:07,940 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 99 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 21:15:07,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2023-11-06 21:15:07,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 100. [2023-11-06 21:15:07,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 99 states have (on average 1.3636363636363635) internal successors, (135), 99 states have internal predecessors, (135), 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) [2023-11-06 21:15:07,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 135 transitions. [2023-11-06 21:15:07,965 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 135 transitions. Word has length 34 [2023-11-06 21:15:07,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:15:07,966 INFO L495 AbstractCegarLoop]: Abstraction has 100 states and 135 transitions. [2023-11-06 21:15:07,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:15:07,966 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 135 transitions. [2023-11-06 21:15:07,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-11-06 21:15:07,970 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:15:07,970 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:15:07,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-06 21:15:07,971 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:15:07,971 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:15:07,976 INFO L85 PathProgramCache]: Analyzing trace with hash -1926095264, now seen corresponding path program 1 times [2023-11-06 21:15:07,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:15:07,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567997322] [2023-11-06 21:15:07,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:15:07,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:15:08,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:15:08,156 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:15:08,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:15:08,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567997322] [2023-11-06 21:15:08,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567997322] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 21:15:08,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1718797426] [2023-11-06 21:15:08,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:15:08,157 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:15:08,158 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22083354-7848-440f-9016-104776cadd7b/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:15:08,159 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22083354-7848-440f-9016-104776cadd7b/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:15:08,173 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22083354-7848-440f-9016-104776cadd7b/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 21:15:08,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:15:08,258 INFO L262 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-06 21:15:08,260 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:15:08,328 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:15:08,328 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 21:15:08,439 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:15:08,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1718797426] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 21:15:08,440 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 21:15:08,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2023-11-06 21:15:08,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133248345] [2023-11-06 21:15:08,445 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 21:15:08,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-06 21:15:08,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:15:08,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-06 21:15:08,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-11-06 21:15:08,447 INFO L87 Difference]: Start difference. First operand 100 states and 135 transitions. Second operand has 10 states, 10 states have (on average 4.8) internal successors, (48), 10 states have internal predecessors, (48), 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) [2023-11-06 21:15:08,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:15:08,668 INFO L93 Difference]: Finished difference Result 358 states and 476 transitions. [2023-11-06 21:15:08,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-06 21:15:08,669 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2023-11-06 21:15:08,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:15:08,672 INFO L225 Difference]: With dead ends: 358 [2023-11-06 21:15:08,673 INFO L226 Difference]: Without dead ends: 235 [2023-11-06 21:15:08,677 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 62 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=203, Unknown=0, NotChecked=0, Total=272 [2023-11-06 21:15:08,678 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 102 mSDsluCounter, 253 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 307 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 21:15:08,679 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 307 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 21:15:08,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2023-11-06 21:15:08,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 149. [2023-11-06 21:15:08,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 148 states have (on average 1.3175675675675675) internal successors, (195), 148 states have internal predecessors, (195), 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) [2023-11-06 21:15:08,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 195 transitions. [2023-11-06 21:15:08,704 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 195 transitions. Word has length 34 [2023-11-06 21:15:08,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:15:08,705 INFO L495 AbstractCegarLoop]: Abstraction has 149 states and 195 transitions. [2023-11-06 21:15:08,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 10 states have internal predecessors, (48), 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) [2023-11-06 21:15:08,705 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 195 transitions. [2023-11-06 21:15:08,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-11-06 21:15:08,711 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:15:08,711 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:15:08,719 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22083354-7848-440f-9016-104776cadd7b/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-06 21:15:08,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22083354-7848-440f-9016-104776cadd7b/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:15:08,919 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:15:08,919 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:15:08,919 INFO L85 PathProgramCache]: Analyzing trace with hash 1579891406, now seen corresponding path program 1 times [2023-11-06 21:15:08,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:15:08,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184823453] [2023-11-06 21:15:08,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:15:08,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:15:08,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:15:09,166 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:15:09,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:15:09,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184823453] [2023-11-06 21:15:09,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184823453] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:15:09,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:15:09,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-06 21:15:09,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170459446] [2023-11-06 21:15:09,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:15:09,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 21:15:09,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:15:09,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 21:15:09,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-06 21:15:09,169 INFO L87 Difference]: Start difference. First operand 149 states and 195 transitions. Second operand has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:15:09,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:15:09,235 INFO L93 Difference]: Finished difference Result 245 states and 324 transitions. [2023-11-06 21:15:09,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 21:15:09,236 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2023-11-06 21:15:09,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:15:09,237 INFO L225 Difference]: With dead ends: 245 [2023-11-06 21:15:09,237 INFO L226 Difference]: Without dead ends: 145 [2023-11-06 21:15:09,238 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-06 21:15:09,238 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 45 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 21:15:09,239 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 107 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 21:15:09,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2023-11-06 21:15:09,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 67. [2023-11-06 21:15:09,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 66 states have (on average 1.3181818181818181) internal successors, (87), 66 states have internal predecessors, (87), 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) [2023-11-06 21:15:09,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 87 transitions. [2023-11-06 21:15:09,246 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 87 transitions. Word has length 34 [2023-11-06 21:15:09,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:15:09,246 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 87 transitions. [2023-11-06 21:15:09,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:15:09,247 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 87 transitions. [2023-11-06 21:15:09,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-11-06 21:15:09,248 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:15:09,248 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:15:09,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-06 21:15:09,248 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:15:09,249 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:15:09,249 INFO L85 PathProgramCache]: Analyzing trace with hash 402294432, now seen corresponding path program 1 times [2023-11-06 21:15:09,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:15:09,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530454938] [2023-11-06 21:15:09,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:15:09,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:15:09,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:15:09,816 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:15:09,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:15:09,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530454938] [2023-11-06 21:15:09,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530454938] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 21:15:09,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [143787356] [2023-11-06 21:15:09,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:15:09,818 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:15:09,818 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22083354-7848-440f-9016-104776cadd7b/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:15:09,821 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22083354-7848-440f-9016-104776cadd7b/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:15:09,850 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22083354-7848-440f-9016-104776cadd7b/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-06 21:15:10,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:15:10,215 INFO L262 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 50 conjunts are in the unsatisfiable core [2023-11-06 21:15:10,218 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:15:10,547 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:15:10,547 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 21:15:11,137 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:15:11,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [143787356] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 21:15:11,137 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 21:15:11,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 13, 15] total 29 [2023-11-06 21:15:11,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993779321] [2023-11-06 21:15:11,137 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 21:15:11,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-11-06 21:15:11,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:15:11,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-11-06 21:15:11,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=704, Unknown=0, NotChecked=0, Total=812 [2023-11-06 21:15:11,139 INFO L87 Difference]: Start difference. First operand 67 states and 87 transitions. Second operand has 29 states, 29 states have (on average 2.5517241379310347) internal successors, (74), 29 states have internal predecessors, (74), 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) [2023-11-06 21:15:13,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:15:13,204 INFO L93 Difference]: Finished difference Result 233 states and 305 transitions. [2023-11-06 21:15:13,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2023-11-06 21:15:13,205 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.5517241379310347) internal successors, (74), 29 states have internal predecessors, (74), 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 [2023-11-06 21:15:13,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:15:13,206 INFO L225 Difference]: With dead ends: 233 [2023-11-06 21:15:13,207 INFO L226 Difference]: Without dead ends: 200 [2023-11-06 21:15:13,208 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 51 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1052 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=797, Invalid=3235, Unknown=0, NotChecked=0, Total=4032 [2023-11-06 21:15:13,209 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 1320 mSDsluCounter, 412 mSDsCounter, 0 mSdLazyCounter, 425 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1320 SdHoareTripleChecker+Valid, 445 SdHoareTripleChecker+Invalid, 465 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 425 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-06 21:15:13,210 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1320 Valid, 445 Invalid, 465 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 425 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-06 21:15:13,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2023-11-06 21:15:13,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 92. [2023-11-06 21:15:13,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 91 states have (on average 1.3186813186813187) internal successors, (120), 91 states have internal predecessors, (120), 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) [2023-11-06 21:15:13,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 120 transitions. [2023-11-06 21:15:13,222 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 120 transitions. Word has length 35 [2023-11-06 21:15:13,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:15:13,222 INFO L495 AbstractCegarLoop]: Abstraction has 92 states and 120 transitions. [2023-11-06 21:15:13,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 2.5517241379310347) internal successors, (74), 29 states have internal predecessors, (74), 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) [2023-11-06 21:15:13,223 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 120 transitions. [2023-11-06 21:15:13,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-11-06 21:15:13,225 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:15:13,226 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:15:13,236 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22083354-7848-440f-9016-104776cadd7b/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-06 21:15:13,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22083354-7848-440f-9016-104776cadd7b/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-06 21:15:13,432 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:15:13,433 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:15:13,433 INFO L85 PathProgramCache]: Analyzing trace with hash -992809954, now seen corresponding path program 1 times [2023-11-06 21:15:13,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:15:13,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61707640] [2023-11-06 21:15:13,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:15:13,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:15:13,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:15:14,235 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 51 proven. 8 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-06 21:15:14,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:15:14,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61707640] [2023-11-06 21:15:14,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61707640] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 21:15:14,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [183455802] [2023-11-06 21:15:14,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:15:14,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:15:14,236 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22083354-7848-440f-9016-104776cadd7b/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:15:14,241 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22083354-7848-440f-9016-104776cadd7b/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:15:14,268 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22083354-7848-440f-9016-104776cadd7b/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-06 21:15:14,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:15:14,384 INFO L262 TraceCheckSpWp]: Trace formula consists of 391 conjuncts, 95 conjunts are in the unsatisfiable core [2023-11-06 21:15:14,389 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:15:14,985 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 62 proven. 8 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-06 21:15:14,985 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 21:15:16,011 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 22 proven. 49 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-06 21:15:16,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [183455802] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 21:15:16,011 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 21:15:16,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 13, 18] total 34 [2023-11-06 21:15:16,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015477885] [2023-11-06 21:15:16,017 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 21:15:16,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-11-06 21:15:16,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:15:16,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-11-06 21:15:16,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=957, Unknown=0, NotChecked=0, Total=1122 [2023-11-06 21:15:16,021 INFO L87 Difference]: Start difference. First operand 92 states and 120 transitions. Second operand has 34 states, 34 states have (on average 4.911764705882353) internal successors, (167), 34 states have internal predecessors, (167), 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) [2023-11-06 21:15:30,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:15:30,097 INFO L93 Difference]: Finished difference Result 1063 states and 1351 transitions. [2023-11-06 21:15:30,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 201 states. [2023-11-06 21:15:30,098 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 4.911764705882353) internal successors, (167), 34 states have internal predecessors, (167), 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 69 [2023-11-06 21:15:30,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:15:30,103 INFO L225 Difference]: With dead ends: 1063 [2023-11-06 21:15:30,103 INFO L226 Difference]: Without dead ends: 1005 [2023-11-06 21:15:30,125 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 344 GetRequests, 111 SyntacticMatches, 2 SemanticMatches, 231 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19859 ImplicationChecksByTransitivity, 12.8s TimeCoverageRelationStatistics Valid=6932, Invalid=47124, Unknown=0, NotChecked=0, Total=54056 [2023-11-06 21:15:30,126 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 1127 mSDsluCounter, 1095 mSDsCounter, 0 mSdLazyCounter, 1743 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1127 SdHoareTripleChecker+Valid, 1175 SdHoareTripleChecker+Invalid, 1770 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1743 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-11-06 21:15:30,127 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1127 Valid, 1175 Invalid, 1770 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1743 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-11-06 21:15:30,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1005 states. [2023-11-06 21:15:30,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1005 to 162. [2023-11-06 21:15:30,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 161 states have (on average 1.2919254658385093) internal successors, (208), 161 states have internal predecessors, (208), 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) [2023-11-06 21:15:30,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 208 transitions. [2023-11-06 21:15:30,154 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 208 transitions. Word has length 69 [2023-11-06 21:15:30,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:15:30,155 INFO L495 AbstractCegarLoop]: Abstraction has 162 states and 208 transitions. [2023-11-06 21:15:30,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 4.911764705882353) internal successors, (167), 34 states have internal predecessors, (167), 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) [2023-11-06 21:15:30,155 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 208 transitions. [2023-11-06 21:15:30,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-11-06 21:15:30,156 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:15:30,156 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:15:30,168 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22083354-7848-440f-9016-104776cadd7b/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-06 21:15:30,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22083354-7848-440f-9016-104776cadd7b/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:15:30,363 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:15:30,363 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:15:30,363 INFO L85 PathProgramCache]: Analyzing trace with hash 775620208, now seen corresponding path program 1 times [2023-11-06 21:15:30,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:15:30,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350851756] [2023-11-06 21:15:30,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:15:30,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:15:30,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:15:31,079 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 12 proven. 25 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2023-11-06 21:15:31,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:15:31,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350851756] [2023-11-06 21:15:31,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350851756] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 21:15:31,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [759376634] [2023-11-06 21:15:31,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:15:31,080 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:15:31,080 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22083354-7848-440f-9016-104776cadd7b/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:15:31,081 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22083354-7848-440f-9016-104776cadd7b/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:15:31,104 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22083354-7848-440f-9016-104776cadd7b/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-06 21:15:31,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:15:31,227 INFO L262 TraceCheckSpWp]: Trace formula consists of 391 conjuncts, 35 conjunts are in the unsatisfiable core [2023-11-06 21:15:31,230 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:15:31,579 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 12 proven. 31 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2023-11-06 21:15:31,579 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 21:15:31,935 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 28 proven. 25 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-11-06 21:15:31,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [759376634] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 21:15:31,935 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 21:15:31,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 10, 10] total 19 [2023-11-06 21:15:31,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712066522] [2023-11-06 21:15:31,936 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 21:15:31,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-06 21:15:31,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:15:31,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-06 21:15:31,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2023-11-06 21:15:31,937 INFO L87 Difference]: Start difference. First operand 162 states and 208 transitions. Second operand has 19 states, 19 states have (on average 5.105263157894737) internal successors, (97), 19 states have internal predecessors, (97), 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) [2023-11-06 21:15:33,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:15:33,289 INFO L93 Difference]: Finished difference Result 478 states and 610 transitions. [2023-11-06 21:15:33,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-11-06 21:15:33,290 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.105263157894737) internal successors, (97), 19 states have internal predecessors, (97), 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 70 [2023-11-06 21:15:33,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:15:33,293 INFO L225 Difference]: With dead ends: 478 [2023-11-06 21:15:33,293 INFO L226 Difference]: Without dead ends: 344 [2023-11-06 21:15:33,294 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 129 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 330 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=519, Invalid=1461, Unknown=0, NotChecked=0, Total=1980 [2023-11-06 21:15:33,295 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 263 mSDsluCounter, 422 mSDsCounter, 0 mSdLazyCounter, 578 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 263 SdHoareTripleChecker+Valid, 490 SdHoareTripleChecker+Invalid, 583 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 578 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-06 21:15:33,295 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [263 Valid, 490 Invalid, 583 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 578 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-06 21:15:33,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2023-11-06 21:15:33,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 145. [2023-11-06 21:15:33,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 144 states have (on average 1.2708333333333333) internal successors, (183), 144 states have internal predecessors, (183), 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) [2023-11-06 21:15:33,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 183 transitions. [2023-11-06 21:15:33,319 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 183 transitions. Word has length 70 [2023-11-06 21:15:33,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:15:33,319 INFO L495 AbstractCegarLoop]: Abstraction has 145 states and 183 transitions. [2023-11-06 21:15:33,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.105263157894737) internal successors, (97), 19 states have internal predecessors, (97), 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) [2023-11-06 21:15:33,320 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 183 transitions. [2023-11-06 21:15:33,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-11-06 21:15:33,321 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:15:33,321 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:15:33,334 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22083354-7848-440f-9016-104776cadd7b/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-06 21:15:33,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22083354-7848-440f-9016-104776cadd7b/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:15:33,528 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:15:33,528 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:15:33,528 INFO L85 PathProgramCache]: Analyzing trace with hash -913323534, now seen corresponding path program 1 times [2023-11-06 21:15:33,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:15:33,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239904931] [2023-11-06 21:15:33,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:15:33,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:15:33,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:15:35,648 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 39 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:15:35,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:15:35,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239904931] [2023-11-06 21:15:35,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239904931] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 21:15:35,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [931818445] [2023-11-06 21:15:35,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:15:35,649 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:15:35,649 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22083354-7848-440f-9016-104776cadd7b/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:15:35,657 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22083354-7848-440f-9016-104776cadd7b/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:15:35,680 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22083354-7848-440f-9016-104776cadd7b/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-06 21:15:36,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:15:36,112 INFO L262 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 118 conjunts are in the unsatisfiable core [2023-11-06 21:15:36,118 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:15:37,704 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 18 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:15:37,705 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 21:16:24,589 WARN L293 SmtUtils]: Spent 10.56s on a formula simplification that was a NOOP. DAG size: 66 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-06 21:17:51,286 WARN L293 SmtUtils]: Spent 6.93s on a formula simplification that was a NOOP. DAG size: 63 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-06 21:18:26,287 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 12 proven. 63 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:18:26,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [931818445] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 21:18:26,287 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 21:18:26,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 23, 27] total 53 [2023-11-06 21:18:26,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420987975] [2023-11-06 21:18:26,288 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 21:18:26,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2023-11-06 21:18:26,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:18:26,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2023-11-06 21:18:26,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=383, Invalid=2360, Unknown=13, NotChecked=0, Total=2756 [2023-11-06 21:18:26,291 INFO L87 Difference]: Start difference. First operand 145 states and 183 transitions. Second operand has 53 states, 53 states have (on average 3.0377358490566038) internal successors, (161), 53 states have internal predecessors, (161), 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) [2023-11-06 21:18:35,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:18:35,107 INFO L93 Difference]: Finished difference Result 705 states and 893 transitions. [2023-11-06 21:18:35,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2023-11-06 21:18:35,108 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 3.0377358490566038) internal successors, (161), 53 states have internal predecessors, (161), 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 70 [2023-11-06 21:18:35,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:18:35,112 INFO L225 Difference]: With dead ends: 705 [2023-11-06 21:18:35,112 INFO L226 Difference]: Without dead ends: 588 [2023-11-06 21:18:35,113 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 101 SyntacticMatches, 4 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2835 ImplicationChecksByTransitivity, 79.6s TimeCoverageRelationStatistics Valid=2276, Invalid=8013, Unknown=13, NotChecked=0, Total=10302 [2023-11-06 21:18:35,114 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 1384 mSDsluCounter, 1181 mSDsCounter, 0 mSdLazyCounter, 1332 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1384 SdHoareTripleChecker+Valid, 1229 SdHoareTripleChecker+Invalid, 1447 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 1332 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-11-06 21:18:35,121 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1384 Valid, 1229 Invalid, 1447 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 1332 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-11-06 21:18:35,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 588 states. [2023-11-06 21:18:35,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 588 to 184. [2023-11-06 21:18:35,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 183 states have (on average 1.2568306010928962) internal successors, (230), 183 states have internal predecessors, (230), 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) [2023-11-06 21:18:35,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 230 transitions. [2023-11-06 21:18:35,153 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 230 transitions. Word has length 70 [2023-11-06 21:18:35,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:18:35,153 INFO L495 AbstractCegarLoop]: Abstraction has 184 states and 230 transitions. [2023-11-06 21:18:35,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 3.0377358490566038) internal successors, (161), 53 states have internal predecessors, (161), 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) [2023-11-06 21:18:35,154 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 230 transitions. [2023-11-06 21:18:35,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-11-06 21:18:35,155 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:18:35,155 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:18:35,160 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22083354-7848-440f-9016-104776cadd7b/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-06 21:18:35,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22083354-7848-440f-9016-104776cadd7b/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:18:35,357 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:18:35,358 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:18:35,358 INFO L85 PathProgramCache]: Analyzing trace with hash -2001629800, now seen corresponding path program 2 times [2023-11-06 21:18:35,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:18:35,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813056629] [2023-11-06 21:18:35,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:18:35,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:18:35,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 21:18:35,516 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 21:18:35,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 21:18:35,687 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 21:18:35,687 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-06 21:18:35,688 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-06 21:18:35,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-06 21:18:35,696 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:18:35,700 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-06 21:18:35,805 WARN L316 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2023-11-06 21:18:35,806 WARN L316 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2023-11-06 21:18:35,806 WARN L316 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2023-11-06 21:18:35,807 WARN L316 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2023-11-06 21:18:35,830 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 09:18:35 BoogieIcfgContainer [2023-11-06 21:18:35,830 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-06 21:18:35,831 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-06 21:18:35,832 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-06 21:18:35,846 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-06 21:18:35,847 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:14:56" (3/4) ... [2023-11-06 21:18:35,850 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-06 21:18:35,851 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-06 21:18:35,852 INFO L158 Benchmark]: Toolchain (without parser) took 220419.12ms. Allocated memory was 167.8MB in the beginning and 383.8MB in the end (delta: 216.0MB). Free memory was 121.0MB in the beginning and 203.1MB in the end (delta: -82.2MB). Peak memory consumption was 135.1MB. Max. memory is 16.1GB. [2023-11-06 21:18:35,852 INFO L158 Benchmark]: CDTParser took 0.74ms. Allocated memory is still 167.8MB. Free memory is still 142.9MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 21:18:35,853 INFO L158 Benchmark]: CACSL2BoogieTranslator took 364.59ms. Allocated memory is still 167.8MB. Free memory was 121.0MB in the beginning and 109.3MB in the end (delta: 11.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-06 21:18:35,854 INFO L158 Benchmark]: Boogie Procedure Inliner took 81.17ms. Allocated memory is still 167.8MB. Free memory was 109.3MB in the beginning and 106.5MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 21:18:35,854 INFO L158 Benchmark]: Boogie Preprocessor took 58.08ms. Allocated memory is still 167.8MB. Free memory was 106.5MB in the beginning and 104.8MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 21:18:35,854 INFO L158 Benchmark]: RCFGBuilder took 656.03ms. Allocated memory is still 167.8MB. Free memory was 104.8MB in the beginning and 87.3MB in the end (delta: 17.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-11-06 21:18:35,855 INFO L158 Benchmark]: TraceAbstraction took 219231.28ms. Allocated memory was 167.8MB in the beginning and 383.8MB in the end (delta: 216.0MB). Free memory was 86.6MB in the beginning and 203.1MB in the end (delta: -116.5MB). Peak memory consumption was 101.6MB. Max. memory is 16.1GB. [2023-11-06 21:18:35,855 INFO L158 Benchmark]: Witness Printer took 19.53ms. Allocated memory is still 383.8MB. Free memory is still 203.1MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 21:18:35,857 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.74ms. Allocated memory is still 167.8MB. Free memory is still 142.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 364.59ms. Allocated memory is still 167.8MB. Free memory was 121.0MB in the beginning and 109.3MB in the end (delta: 11.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 81.17ms. Allocated memory is still 167.8MB. Free memory was 109.3MB in the beginning and 106.5MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 58.08ms. Allocated memory is still 167.8MB. Free memory was 106.5MB in the beginning and 104.8MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 656.03ms. Allocated memory is still 167.8MB. Free memory was 104.8MB in the beginning and 87.3MB in the end (delta: 17.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 219231.28ms. Allocated memory was 167.8MB in the beginning and 383.8MB in the end (delta: 216.0MB). Free memory was 86.6MB in the beginning and 203.1MB in the end (delta: -116.5MB). Peak memory consumption was 101.6MB. Max. memory is 16.1GB. * Witness Printer took 19.53ms. Allocated memory is still 383.8MB. Free memory is still 203.1MB. 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: 22]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: overapproximation of bitwiseAnd at line 82. Possible FailurePath: [L27] const SORT_1 mask_SORT_1 = (SORT_1)-1 >> (sizeof(SORT_1) * 8 - 1); [L28] const SORT_1 msb_SORT_1 = (SORT_1)1 << (1 - 1); [L30] const SORT_2 mask_SORT_2 = (SORT_2)-1 >> (sizeof(SORT_2) * 8 - 32); [L31] const SORT_2 msb_SORT_2 = (SORT_2)1 << (32 - 1); [L33] const SORT_2 var_4 = 0; [L34] const SORT_2 var_9 = 1; [L35] const SORT_2 var_16 = 3; [L37] SORT_1 input_3; [L39] EXPR __VERIFIER_nondet_uint() & mask_SORT_2 VAL [__VERIFIER_nondet_uint() & mask_SORT_2=0, __VERIFIER_nondet_uint()=0, mask_SORT_1=1, mask_SORT_2=4294967295, msb_SORT_1=1, msb_SORT_2=2147483648, var_16=3, var_4=0, var_9=1] [L39] SORT_2 state_5 = __VERIFIER_nondet_uint() & mask_SORT_2; [L40] EXPR __VERIFIER_nondet_uint() & mask_SORT_2 VAL [__VERIFIER_nondet_uint() & mask_SORT_2=0, __VERIFIER_nondet_uint()=0, mask_SORT_1=1, mask_SORT_2=4294967295, msb_SORT_1=1, msb_SORT_2=2147483648, state_5=0, var_16=3, var_4=0, var_9=1] [L40] SORT_2 state_6 = __VERIFIER_nondet_uint() & mask_SORT_2; [L42] SORT_2 init_7_arg_1 = var_4; [L43] state_5 = init_7_arg_1 [L44] SORT_2 init_8_arg_1 = var_4; [L45] state_6 = init_8_arg_1 VAL [init_7_arg_1=0, init_8_arg_1=0, mask_SORT_1=1, mask_SORT_2=4294967295, msb_SORT_1=1, msb_SORT_2=2147483648, state_5=0, state_6=0, var_16=3, var_4=0, var_9=1] [L48] input_3 = __VERIFIER_nondet_uchar() [L49] EXPR input_3 & mask_SORT_1 VAL [init_7_arg_1=0, init_8_arg_1=0, input_3 & mask_SORT_1=0, input_3=0, mask_SORT_1=1, mask_SORT_2=4294967295, msb_SORT_1=1, msb_SORT_2=2147483648, state_5=0, state_6=0, var_16=3, var_4=0, var_9=1] [L49] input_3 = input_3 & mask_SORT_1 [L52] SORT_2 var_17_arg_0 = state_5; [L53] SORT_2 var_17_arg_1 = var_16; [L54] SORT_1 var_17 = var_17_arg_0 == var_17_arg_1; [L55] SORT_2 var_18_arg_0 = state_6; [L56] SORT_2 var_18_arg_1 = var_16; [L57] SORT_1 var_18 = var_18_arg_0 == var_18_arg_1; [L58] SORT_1 var_19_arg_0 = var_17; [L59] SORT_1 var_19_arg_1 = var_18; VAL [init_7_arg_1=0, init_8_arg_1=0, input_3=0, mask_SORT_1=1, mask_SORT_2=4294967295, msb_SORT_1=1, msb_SORT_2=2147483648, state_5=0, state_6=0, var_16=3, var_17=0, var_17_arg_0=0, var_17_arg_1=3, var_18=0, var_18_arg_0=0, var_18_arg_1=3, var_19_arg_0=0, var_19_arg_1=0, var_4=0, var_9=1] [L60] EXPR var_19_arg_0 & var_19_arg_1 VAL [init_7_arg_1=0, init_8_arg_1=0, input_3=0, mask_SORT_1=1, mask_SORT_2=4294967295, msb_SORT_1=1, msb_SORT_2=2147483648, state_5=0, state_6=0, var_16=3, var_17=0, var_17_arg_0=0, var_17_arg_1=3, var_18=0, var_18_arg_0=0, var_18_arg_1=3, var_19_arg_0 & var_19_arg_1=0, var_19_arg_0=0, var_19_arg_1=0, var_4=0, var_9=1] [L60] SORT_1 var_19 = var_19_arg_0 & var_19_arg_1; [L61] EXPR var_19 & mask_SORT_1 VAL [init_7_arg_1=0, init_8_arg_1=0, input_3=0, mask_SORT_1=1, mask_SORT_2=4294967295, msb_SORT_1=1, msb_SORT_2=2147483648, state_5=0, state_6=0, var_16=3, var_17=0, var_17_arg_0=0, var_17_arg_1=3, var_18=0, var_18_arg_0=0, var_18_arg_1=3, var_19 & mask_SORT_1=0, var_19=0, var_19_arg_0=0, var_19_arg_1=0, var_4=0, var_9=1] [L61] var_19 = var_19 & mask_SORT_1 [L62] SORT_1 bad_20_arg_0 = var_19; [L63] CALL __VERIFIER_assert(!(bad_20_arg_0)) [L22] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L63] RET __VERIFIER_assert(!(bad_20_arg_0)) [L65] SORT_2 var_10_arg_0 = state_5; [L66] SORT_2 var_10_arg_1 = var_9; [L67] SORT_2 var_10 = var_10_arg_0 + var_10_arg_1; [L68] SORT_1 var_12_arg_0 = input_3; [L69] SORT_2 var_12_arg_1 = state_5; [L70] SORT_2 var_12_arg_2 = var_10; [L71] SORT_2 var_12 = var_12_arg_0 ? var_12_arg_1 : var_12_arg_2; VAL [bad_20_arg_0=0, init_7_arg_1=0, init_8_arg_1=0, input_3=0, mask_SORT_1=1, mask_SORT_2=4294967295, msb_SORT_1=1, msb_SORT_2=2147483648, state_5=0, state_6=0, var_10=1, var_10_arg_0=0, var_10_arg_1=1, var_12=1, var_12_arg_0=0, var_12_arg_1=0, var_12_arg_2=1, var_16=3, var_17=0, var_17_arg_0=0, var_17_arg_1=3, var_18=0, var_18_arg_0=0, var_18_arg_1=3, var_19=0, var_19_arg_0=0, var_19_arg_1=0, var_4=0, var_9=1] [L72] EXPR var_12 & mask_SORT_2 VAL [bad_20_arg_0=0, init_7_arg_1=0, init_8_arg_1=0, input_3=0, mask_SORT_1=1, mask_SORT_2=4294967295, msb_SORT_1=1, msb_SORT_2=2147483648, state_5=0, state_6=0, var_10=1, var_10_arg_0=0, var_10_arg_1=1, var_12 & mask_SORT_2=1, var_12=1, var_12_arg_0=0, var_12_arg_1=0, var_12_arg_2=1, var_16=3, var_17=0, var_17_arg_0=0, var_17_arg_1=3, var_18=0, var_18_arg_0=0, var_18_arg_1=3, var_19=0, var_19_arg_0=0, var_19_arg_1=0, var_4=0, var_9=1] [L72] var_12 = var_12 & mask_SORT_2 [L73] SORT_2 next_14_arg_1 = var_12; [L74] SORT_2 var_11_arg_0 = state_6; [L75] SORT_2 var_11_arg_1 = var_9; [L76] SORT_2 var_11 = var_11_arg_0 + var_11_arg_1; [L77] SORT_1 var_13_arg_0 = ~input_3; VAL [bad_20_arg_0=0, init_7_arg_1=0, init_8_arg_1=0, input_3=0, mask_SORT_1=1, mask_SORT_2=4294967295, msb_SORT_1=1, msb_SORT_2=2147483648, next_14_arg_1=1, state_5=0, state_6=0, var_10=1, var_10_arg_0=0, var_10_arg_1=1, var_11=1, var_11_arg_0=0, var_11_arg_1=1, var_12=1, var_12_arg_0=0, var_12_arg_1=0, var_12_arg_2=1, var_13_arg_0=255, var_16=3, var_17=0, var_17_arg_0=0, var_17_arg_1=3, var_18=0, var_18_arg_0=0, var_18_arg_1=3, var_19=0, var_19_arg_0=0, var_19_arg_1=0, var_4=0, var_9=1] [L78] EXPR var_13_arg_0 & mask_SORT_1 VAL [bad_20_arg_0=0, init_7_arg_1=0, init_8_arg_1=0, input_3=0, mask_SORT_1=1, mask_SORT_2=4294967295, msb_SORT_1=1, msb_SORT_2=2147483648, next_14_arg_1=1, state_5=0, state_6=0, var_10=1, var_10_arg_0=0, var_10_arg_1=1, var_11=1, var_11_arg_0=0, var_11_arg_1=1, var_12=1, var_12_arg_0=0, var_12_arg_1=0, var_12_arg_2=1, var_13_arg_0 & mask_SORT_1=0, var_13_arg_0=255, var_16=3, var_17=0, var_17_arg_0=0, var_17_arg_1=3, var_18=0, var_18_arg_0=0, var_18_arg_1=3, var_19=0, var_19_arg_0=0, var_19_arg_1=0, var_4=0, var_9=1] [L78] var_13_arg_0 = var_13_arg_0 & mask_SORT_1 [L79] SORT_2 var_13_arg_1 = state_6; [L80] SORT_2 var_13_arg_2 = var_11; [L81] SORT_2 var_13 = var_13_arg_0 ? var_13_arg_1 : var_13_arg_2; VAL [bad_20_arg_0=0, init_7_arg_1=0, init_8_arg_1=0, input_3=0, mask_SORT_1=1, mask_SORT_2=4294967295, msb_SORT_1=1, msb_SORT_2=2147483648, next_14_arg_1=1, state_5=0, state_6=0, var_10=1, var_10_arg_0=0, var_10_arg_1=1, var_11=1, var_11_arg_0=0, var_11_arg_1=1, var_12=1, var_12_arg_0=0, var_12_arg_1=0, var_12_arg_2=1, var_13=1, var_13_arg_0=0, var_13_arg_1=0, var_13_arg_2=1, var_16=3, var_17=0, var_17_arg_0=0, var_17_arg_1=3, var_18=0, var_18_arg_0=0, var_18_arg_1=3, var_19=0, var_19_arg_0=0, var_19_arg_1=0, var_4=0, var_9=1] [L82] EXPR var_13 & mask_SORT_2 VAL [bad_20_arg_0=0, init_7_arg_1=0, init_8_arg_1=0, input_3=0, mask_SORT_1=1, mask_SORT_2=4294967295, msb_SORT_1=1, msb_SORT_2=2147483648, next_14_arg_1=1, state_5=0, state_6=0, var_10=1, var_10_arg_0=0, var_10_arg_1=1, var_11=1, var_11_arg_0=0, var_11_arg_1=1, var_12=1, var_12_arg_0=0, var_12_arg_1=0, var_12_arg_2=1, var_13 & mask_SORT_2=4294967297, var_13=1, var_13_arg_0=0, var_13_arg_1=0, var_13_arg_2=1, var_16=3, var_17=0, var_17_arg_0=0, var_17_arg_1=3, var_18=0, var_18_arg_0=0, var_18_arg_1=3, var_19=0, var_19_arg_0=0, var_19_arg_1=0, var_4=0, var_9=1] [L82] var_13 = var_13 & mask_SORT_2 [L83] SORT_2 next_15_arg_1 = var_13; [L85] state_5 = next_14_arg_1 [L86] state_6 = next_15_arg_1 VAL [bad_20_arg_0=0, init_7_arg_1=0, init_8_arg_1=0, input_3=0, mask_SORT_1=1, mask_SORT_2=4294967295, msb_SORT_1=1, msb_SORT_2=2147483648, next_14_arg_1=1, next_15_arg_1=1, state_5=1, state_6=1, var_10=1, var_10_arg_0=0, var_10_arg_1=1, var_11=1, var_11_arg_0=0, var_11_arg_1=1, var_12=1, var_12_arg_0=0, var_12_arg_1=0, var_12_arg_2=1, var_13=1, var_13_arg_0=0, var_13_arg_1=0, var_13_arg_2=1, var_16=3, var_17=0, var_17_arg_0=0, var_17_arg_1=3, var_18=0, var_18_arg_0=0, var_18_arg_1=3, var_19=0, var_19_arg_0=0, var_19_arg_1=0, var_4=0, var_9=1] [L48] input_3 = __VERIFIER_nondet_uchar() [L49] EXPR input_3 & mask_SORT_1 VAL [bad_20_arg_0=0, init_7_arg_1=0, init_8_arg_1=0, input_3 & mask_SORT_1=0, input_3=0, mask_SORT_1=1, mask_SORT_2=4294967295, msb_SORT_1=1, msb_SORT_2=2147483648, next_14_arg_1=1, next_15_arg_1=1, state_5=1, state_6=1, var_10=1, var_10_arg_0=0, var_10_arg_1=1, var_11=1, var_11_arg_0=0, var_11_arg_1=1, var_12=1, var_12_arg_0=0, var_12_arg_1=0, var_12_arg_2=1, var_13=1, var_13_arg_0=0, var_13_arg_1=0, var_13_arg_2=1, var_16=3, var_17=0, var_17_arg_0=0, var_17_arg_1=3, var_18=0, var_18_arg_0=0, var_18_arg_1=3, var_19=0, var_19_arg_0=0, var_19_arg_1=0, var_4=0, var_9=1] [L49] input_3 = input_3 & mask_SORT_1 [L52] SORT_2 var_17_arg_0 = state_5; [L53] SORT_2 var_17_arg_1 = var_16; [L54] SORT_1 var_17 = var_17_arg_0 == var_17_arg_1; [L55] SORT_2 var_18_arg_0 = state_6; [L56] SORT_2 var_18_arg_1 = var_16; [L57] SORT_1 var_18 = var_18_arg_0 == var_18_arg_1; [L58] SORT_1 var_19_arg_0 = var_17; [L59] SORT_1 var_19_arg_1 = var_18; VAL [bad_20_arg_0=0, init_7_arg_1=0, init_8_arg_1=0, input_3=0, mask_SORT_1=1, mask_SORT_2=4294967295, msb_SORT_1=1, msb_SORT_2=2147483648, next_14_arg_1=1, next_15_arg_1=1, state_5=1, state_6=1, var_10=1, var_10_arg_0=0, var_10_arg_1=1, var_11=1, var_11_arg_0=0, var_11_arg_1=1, var_12=1, var_12_arg_0=0, var_12_arg_1=0, var_12_arg_2=1, var_13=1, var_13_arg_0=0, var_13_arg_1=0, var_13_arg_2=1, var_16=3, var_17=0, var_17_arg_0=1, var_17_arg_1=3, var_18=0, var_18_arg_0=1, var_18_arg_1=3, var_19=0, var_19_arg_0=0, var_19_arg_1=0, var_4=0, var_9=1] [L60] EXPR var_19_arg_0 & var_19_arg_1 VAL [bad_20_arg_0=0, init_7_arg_1=0, init_8_arg_1=0, input_3=0, mask_SORT_1=1, mask_SORT_2=4294967295, msb_SORT_1=1, msb_SORT_2=2147483648, next_14_arg_1=1, next_15_arg_1=1, state_5=1, state_6=1, var_10=1, var_10_arg_0=0, var_10_arg_1=1, var_11=1, var_11_arg_0=0, var_11_arg_1=1, var_12=1, var_12_arg_0=0, var_12_arg_1=0, var_12_arg_2=1, var_13=1, var_13_arg_0=0, var_13_arg_1=0, var_13_arg_2=1, var_16=3, var_17=0, var_17_arg_0=1, var_17_arg_1=3, var_18=0, var_18_arg_0=1, var_18_arg_1=3, var_19=0, var_19_arg_0 & var_19_arg_1=0, var_19_arg_0=0, var_19_arg_1=0, var_4=0, var_9=1] [L60] SORT_1 var_19 = var_19_arg_0 & var_19_arg_1; [L61] EXPR var_19 & mask_SORT_1 VAL [bad_20_arg_0=0, init_7_arg_1=0, init_8_arg_1=0, input_3=0, mask_SORT_1=1, mask_SORT_2=4294967295, msb_SORT_1=1, msb_SORT_2=2147483648, next_14_arg_1=1, next_15_arg_1=1, state_5=1, state_6=1, var_10=1, var_10_arg_0=0, var_10_arg_1=1, var_11=1, var_11_arg_0=0, var_11_arg_1=1, var_12=1, var_12_arg_0=0, var_12_arg_1=0, var_12_arg_2=1, var_13=1, var_13_arg_0=0, var_13_arg_1=0, var_13_arg_2=1, var_16=3, var_17=0, var_17_arg_0=1, var_17_arg_1=3, var_18=0, var_18_arg_0=1, var_18_arg_1=3, var_19 & mask_SORT_1=0, var_19=0, var_19_arg_0=0, var_19_arg_1=0, var_4=0, var_9=1] [L61] var_19 = var_19 & mask_SORT_1 [L62] SORT_1 bad_20_arg_0 = var_19; [L63] CALL __VERIFIER_assert(!(bad_20_arg_0)) [L22] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L63] RET __VERIFIER_assert(!(bad_20_arg_0)) [L65] SORT_2 var_10_arg_0 = state_5; [L66] SORT_2 var_10_arg_1 = var_9; [L67] SORT_2 var_10 = var_10_arg_0 + var_10_arg_1; [L68] SORT_1 var_12_arg_0 = input_3; [L69] SORT_2 var_12_arg_1 = state_5; [L70] SORT_2 var_12_arg_2 = var_10; [L71] SORT_2 var_12 = var_12_arg_0 ? var_12_arg_1 : var_12_arg_2; VAL [bad_20_arg_0=0, init_7_arg_1=0, init_8_arg_1=0, input_3=0, mask_SORT_1=1, mask_SORT_2=4294967295, msb_SORT_1=1, msb_SORT_2=2147483648, next_14_arg_1=1, next_15_arg_1=1, state_5=1, state_6=1, var_10=2, var_10_arg_0=1, var_10_arg_1=1, var_11=1, var_11_arg_0=0, var_11_arg_1=1, var_12=2, var_12_arg_0=0, var_12_arg_1=1, var_12_arg_2=2, var_13=1, var_13_arg_0=0, var_13_arg_1=0, var_13_arg_2=1, var_16=3, var_17=0, var_17_arg_0=1, var_17_arg_1=3, var_18=0, var_18_arg_0=1, var_18_arg_1=3, var_19=0, var_19_arg_0=0, var_19_arg_1=0, var_4=0, var_9=1] [L72] EXPR var_12 & mask_SORT_2 VAL [bad_20_arg_0=0, init_7_arg_1=0, init_8_arg_1=0, input_3=0, mask_SORT_1=1, mask_SORT_2=4294967295, msb_SORT_1=1, msb_SORT_2=2147483648, next_14_arg_1=1, next_15_arg_1=1, state_5=1, state_6=1, var_10=2, var_10_arg_0=1, var_10_arg_1=1, var_11=1, var_11_arg_0=0, var_11_arg_1=1, var_12 & mask_SORT_2=-4294967294, var_12=2, var_12_arg_0=0, var_12_arg_1=1, var_12_arg_2=2, var_13=1, var_13_arg_0=0, var_13_arg_1=0, var_13_arg_2=1, var_16=3, var_17=0, var_17_arg_0=1, var_17_arg_1=3, var_18=0, var_18_arg_0=1, var_18_arg_1=3, var_19=0, var_19_arg_0=0, var_19_arg_1=0, var_4=0, var_9=1] [L72] var_12 = var_12 & mask_SORT_2 [L73] SORT_2 next_14_arg_1 = var_12; [L74] SORT_2 var_11_arg_0 = state_6; [L75] SORT_2 var_11_arg_1 = var_9; [L76] SORT_2 var_11 = var_11_arg_0 + var_11_arg_1; [L77] SORT_1 var_13_arg_0 = ~input_3; VAL [bad_20_arg_0=0, init_7_arg_1=0, init_8_arg_1=0, input_3=0, mask_SORT_1=1, mask_SORT_2=4294967295, msb_SORT_1=1, msb_SORT_2=2147483648, next_14_arg_1=2, next_15_arg_1=1, state_5=1, state_6=1, var_10=2, var_10_arg_0=1, var_10_arg_1=1, var_11=2, var_11_arg_0=1, var_11_arg_1=1, var_12=2, var_12_arg_0=0, var_12_arg_1=1, var_12_arg_2=2, var_13=1, var_13_arg_0=255, var_13_arg_1=0, var_13_arg_2=1, var_16=3, var_17=0, var_17_arg_0=1, var_17_arg_1=3, var_18=0, var_18_arg_0=1, var_18_arg_1=3, var_19=0, var_19_arg_0=0, var_19_arg_1=0, var_4=0, var_9=1] [L78] EXPR var_13_arg_0 & mask_SORT_1 VAL [bad_20_arg_0=0, init_7_arg_1=0, init_8_arg_1=0, input_3=0, mask_SORT_1=1, mask_SORT_2=4294967295, msb_SORT_1=1, msb_SORT_2=2147483648, next_14_arg_1=2, next_15_arg_1=1, state_5=1, state_6=1, var_10=2, var_10_arg_0=1, var_10_arg_1=1, var_11=2, var_11_arg_0=1, var_11_arg_1=1, var_12=2, var_12_arg_0=0, var_12_arg_1=1, var_12_arg_2=2, var_13=1, var_13_arg_0 & mask_SORT_1=0, var_13_arg_0=255, var_13_arg_1=0, var_13_arg_2=1, var_16=3, var_17=0, var_17_arg_0=1, var_17_arg_1=3, var_18=0, var_18_arg_0=1, var_18_arg_1=3, var_19=0, var_19_arg_0=0, var_19_arg_1=0, var_4=0, var_9=1] [L78] var_13_arg_0 = var_13_arg_0 & mask_SORT_1 [L79] SORT_2 var_13_arg_1 = state_6; [L80] SORT_2 var_13_arg_2 = var_11; [L81] SORT_2 var_13 = var_13_arg_0 ? var_13_arg_1 : var_13_arg_2; VAL [bad_20_arg_0=0, init_7_arg_1=0, init_8_arg_1=0, input_3=0, mask_SORT_1=1, mask_SORT_2=4294967295, msb_SORT_1=1, msb_SORT_2=2147483648, next_14_arg_1=2, next_15_arg_1=1, state_5=1, state_6=1, var_10=2, var_10_arg_0=1, var_10_arg_1=1, var_11=2, var_11_arg_0=1, var_11_arg_1=1, var_12=2, var_12_arg_0=0, var_12_arg_1=1, var_12_arg_2=2, var_13=2, var_13_arg_0=0, var_13_arg_1=1, var_13_arg_2=2, var_16=3, var_17=0, var_17_arg_0=1, var_17_arg_1=3, var_18=0, var_18_arg_0=1, var_18_arg_1=3, var_19=0, var_19_arg_0=0, var_19_arg_1=0, var_4=0, var_9=1] [L82] EXPR var_13 & mask_SORT_2 VAL [bad_20_arg_0=0, init_7_arg_1=0, init_8_arg_1=0, input_3=0, mask_SORT_1=1, mask_SORT_2=4294967295, msb_SORT_1=1, msb_SORT_2=2147483648, next_14_arg_1=2, next_15_arg_1=1, state_5=1, state_6=1, var_10=2, var_10_arg_0=1, var_10_arg_1=1, var_11=2, var_11_arg_0=1, var_11_arg_1=1, var_12=2, var_12_arg_0=0, var_12_arg_1=1, var_12_arg_2=2, var_13 & mask_SORT_2=2, var_13=2, var_13_arg_0=0, var_13_arg_1=1, var_13_arg_2=2, var_16=3, var_17=0, var_17_arg_0=1, var_17_arg_1=3, var_18=0, var_18_arg_0=1, var_18_arg_1=3, var_19=0, var_19_arg_0=0, var_19_arg_1=0, var_4=0, var_9=1] [L82] var_13 = var_13 & mask_SORT_2 [L83] SORT_2 next_15_arg_1 = var_13; [L85] state_5 = next_14_arg_1 [L86] state_6 = next_15_arg_1 VAL [bad_20_arg_0=0, init_7_arg_1=0, init_8_arg_1=0, input_3=0, mask_SORT_1=1, mask_SORT_2=4294967295, msb_SORT_1=1, msb_SORT_2=2147483648, next_14_arg_1=2, next_15_arg_1=2, state_5=2, state_6=2, var_10=2, var_10_arg_0=1, var_10_arg_1=1, var_11=2, var_11_arg_0=1, var_11_arg_1=1, var_12=2, var_12_arg_0=0, var_12_arg_1=1, var_12_arg_2=2, var_13=2, var_13_arg_0=0, var_13_arg_1=1, var_13_arg_2=2, var_16=3, var_17=0, var_17_arg_0=1, var_17_arg_1=3, var_18=0, var_18_arg_0=1, var_18_arg_1=3, var_19=0, var_19_arg_0=0, var_19_arg_1=0, var_4=0, var_9=1] [L48] input_3 = __VERIFIER_nondet_uchar() [L49] EXPR input_3 & mask_SORT_1 VAL [bad_20_arg_0=0, init_7_arg_1=0, init_8_arg_1=0, input_3 & mask_SORT_1=0, input_3=0, mask_SORT_1=1, mask_SORT_2=4294967295, msb_SORT_1=1, msb_SORT_2=2147483648, next_14_arg_1=2, next_15_arg_1=2, state_5=2, state_6=2, var_10=2, var_10_arg_0=1, var_10_arg_1=1, var_11=2, var_11_arg_0=1, var_11_arg_1=1, var_12=2, var_12_arg_0=0, var_12_arg_1=1, var_12_arg_2=2, var_13=2, var_13_arg_0=0, var_13_arg_1=1, var_13_arg_2=2, var_16=3, var_17=0, var_17_arg_0=1, var_17_arg_1=3, var_18=0, var_18_arg_0=1, var_18_arg_1=3, var_19=0, var_19_arg_0=0, var_19_arg_1=0, var_4=0, var_9=1] [L49] input_3 = input_3 & mask_SORT_1 [L52] SORT_2 var_17_arg_0 = state_5; [L53] SORT_2 var_17_arg_1 = var_16; [L54] SORT_1 var_17 = var_17_arg_0 == var_17_arg_1; [L55] SORT_2 var_18_arg_0 = state_6; [L56] SORT_2 var_18_arg_1 = var_16; [L57] SORT_1 var_18 = var_18_arg_0 == var_18_arg_1; [L58] SORT_1 var_19_arg_0 = var_17; [L59] SORT_1 var_19_arg_1 = var_18; VAL [bad_20_arg_0=0, init_7_arg_1=0, init_8_arg_1=0, input_3=0, mask_SORT_1=1, mask_SORT_2=4294967295, msb_SORT_1=1, msb_SORT_2=2147483648, next_14_arg_1=2, next_15_arg_1=2, state_5=2, state_6=2, var_10=2, var_10_arg_0=1, var_10_arg_1=1, var_11=2, var_11_arg_0=1, var_11_arg_1=1, var_12=2, var_12_arg_0=0, var_12_arg_1=1, var_12_arg_2=2, var_13=2, var_13_arg_0=0, var_13_arg_1=1, var_13_arg_2=2, var_16=3, var_17=0, var_17_arg_0=2, var_17_arg_1=3, var_18=0, var_18_arg_0=2, var_18_arg_1=3, var_19=0, var_19_arg_0=0, var_19_arg_1=0, var_4=0, var_9=1] [L60] EXPR var_19_arg_0 & var_19_arg_1 VAL [bad_20_arg_0=0, init_7_arg_1=0, init_8_arg_1=0, input_3=0, mask_SORT_1=1, mask_SORT_2=4294967295, msb_SORT_1=1, msb_SORT_2=2147483648, next_14_arg_1=2, next_15_arg_1=2, state_5=2, state_6=2, var_10=2, var_10_arg_0=1, var_10_arg_1=1, var_11=2, var_11_arg_0=1, var_11_arg_1=1, var_12=2, var_12_arg_0=0, var_12_arg_1=1, var_12_arg_2=2, var_13=2, var_13_arg_0=0, var_13_arg_1=1, var_13_arg_2=2, var_16=3, var_17=0, var_17_arg_0=2, var_17_arg_1=3, var_18=0, var_18_arg_0=2, var_18_arg_1=3, var_19=0, var_19_arg_0 & var_19_arg_1=0, var_19_arg_0=0, var_19_arg_1=0, var_4=0, var_9=1] [L60] SORT_1 var_19 = var_19_arg_0 & var_19_arg_1; [L61] EXPR var_19 & mask_SORT_1 VAL [bad_20_arg_0=0, init_7_arg_1=0, init_8_arg_1=0, input_3=0, mask_SORT_1=1, mask_SORT_2=4294967295, msb_SORT_1=1, msb_SORT_2=2147483648, next_14_arg_1=2, next_15_arg_1=2, state_5=2, state_6=2, var_10=2, var_10_arg_0=1, var_10_arg_1=1, var_11=2, var_11_arg_0=1, var_11_arg_1=1, var_12=2, var_12_arg_0=0, var_12_arg_1=1, var_12_arg_2=2, var_13=2, var_13_arg_0=0, var_13_arg_1=1, var_13_arg_2=2, var_16=3, var_17=0, var_17_arg_0=2, var_17_arg_1=3, var_18=0, var_18_arg_0=2, var_18_arg_1=3, var_19 & mask_SORT_1=0, var_19=0, var_19_arg_0=0, var_19_arg_1=0, var_4=0, var_9=1] [L61] var_19 = var_19 & mask_SORT_1 [L62] SORT_1 bad_20_arg_0 = var_19; [L63] CALL __VERIFIER_assert(!(bad_20_arg_0)) [L22] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L63] RET __VERIFIER_assert(!(bad_20_arg_0)) [L65] SORT_2 var_10_arg_0 = state_5; [L66] SORT_2 var_10_arg_1 = var_9; [L67] SORT_2 var_10 = var_10_arg_0 + var_10_arg_1; [L68] SORT_1 var_12_arg_0 = input_3; [L69] SORT_2 var_12_arg_1 = state_5; [L70] SORT_2 var_12_arg_2 = var_10; [L71] SORT_2 var_12 = var_12_arg_0 ? var_12_arg_1 : var_12_arg_2; VAL [bad_20_arg_0=0, init_7_arg_1=0, init_8_arg_1=0, input_3=0, mask_SORT_1=1, mask_SORT_2=4294967295, msb_SORT_1=1, msb_SORT_2=2147483648, next_14_arg_1=2, next_15_arg_1=2, state_5=2, state_6=2, var_10=3, var_10_arg_0=2, var_10_arg_1=1, var_11=2, var_11_arg_0=1, var_11_arg_1=1, var_12=3, var_12_arg_0=0, var_12_arg_1=2, var_12_arg_2=3, var_13=2, var_13_arg_0=0, var_13_arg_1=1, var_13_arg_2=2, var_16=3, var_17=0, var_17_arg_0=2, var_17_arg_1=3, var_18=0, var_18_arg_0=2, var_18_arg_1=3, var_19=0, var_19_arg_0=0, var_19_arg_1=0, var_4=0, var_9=1] [L72] EXPR var_12 & mask_SORT_2 VAL [bad_20_arg_0=0, init_7_arg_1=0, init_8_arg_1=0, input_3=0, mask_SORT_1=1, mask_SORT_2=4294967295, msb_SORT_1=1, msb_SORT_2=2147483648, next_14_arg_1=2, next_15_arg_1=2, state_5=2, state_6=2, var_10=3, var_10_arg_0=2, var_10_arg_1=1, var_11=2, var_11_arg_0=1, var_11_arg_1=1, var_12 & mask_SORT_2=-4294967293, var_12=3, var_12_arg_0=0, var_12_arg_1=2, var_12_arg_2=3, var_13=2, var_13_arg_0=0, var_13_arg_1=1, var_13_arg_2=2, var_16=3, var_17=0, var_17_arg_0=2, var_17_arg_1=3, var_18=0, var_18_arg_0=2, var_18_arg_1=3, var_19=0, var_19_arg_0=0, var_19_arg_1=0, var_4=0, var_9=1] [L72] var_12 = var_12 & mask_SORT_2 [L73] SORT_2 next_14_arg_1 = var_12; [L74] SORT_2 var_11_arg_0 = state_6; [L75] SORT_2 var_11_arg_1 = var_9; [L76] SORT_2 var_11 = var_11_arg_0 + var_11_arg_1; [L77] SORT_1 var_13_arg_0 = ~input_3; VAL [bad_20_arg_0=0, init_7_arg_1=0, init_8_arg_1=0, input_3=0, mask_SORT_1=1, mask_SORT_2=4294967295, msb_SORT_1=1, msb_SORT_2=2147483648, next_14_arg_1=3, next_15_arg_1=2, state_5=2, state_6=2, var_10=3, var_10_arg_0=2, var_10_arg_1=1, var_11=3, var_11_arg_0=2, var_11_arg_1=1, var_12=3, var_12_arg_0=0, var_12_arg_1=2, var_12_arg_2=3, var_13=2, var_13_arg_0=255, var_13_arg_1=1, var_13_arg_2=2, var_16=3, var_17=0, var_17_arg_0=2, var_17_arg_1=3, var_18=0, var_18_arg_0=2, var_18_arg_1=3, var_19=0, var_19_arg_0=0, var_19_arg_1=0, var_4=0, var_9=1] [L78] EXPR var_13_arg_0 & mask_SORT_1 VAL [bad_20_arg_0=0, init_7_arg_1=0, init_8_arg_1=0, input_3=0, mask_SORT_1=1, mask_SORT_2=4294967295, msb_SORT_1=1, msb_SORT_2=2147483648, next_14_arg_1=3, next_15_arg_1=2, state_5=2, state_6=2, var_10=3, var_10_arg_0=2, var_10_arg_1=1, var_11=3, var_11_arg_0=2, var_11_arg_1=1, var_12=3, var_12_arg_0=0, var_12_arg_1=2, var_12_arg_2=3, var_13=2, var_13_arg_0 & mask_SORT_1=0, var_13_arg_0=255, var_13_arg_1=1, var_13_arg_2=2, var_16=3, var_17=0, var_17_arg_0=2, var_17_arg_1=3, var_18=0, var_18_arg_0=2, var_18_arg_1=3, var_19=0, var_19_arg_0=0, var_19_arg_1=0, var_4=0, var_9=1] [L78] var_13_arg_0 = var_13_arg_0 & mask_SORT_1 [L79] SORT_2 var_13_arg_1 = state_6; [L80] SORT_2 var_13_arg_2 = var_11; [L81] SORT_2 var_13 = var_13_arg_0 ? var_13_arg_1 : var_13_arg_2; VAL [bad_20_arg_0=0, init_7_arg_1=0, init_8_arg_1=0, input_3=0, mask_SORT_1=1, mask_SORT_2=4294967295, msb_SORT_1=1, msb_SORT_2=2147483648, next_14_arg_1=3, next_15_arg_1=2, state_5=2, state_6=2, var_10=3, var_10_arg_0=2, var_10_arg_1=1, var_11=3, var_11_arg_0=2, var_11_arg_1=1, var_12=3, var_12_arg_0=0, var_12_arg_1=2, var_12_arg_2=3, var_13=3, var_13_arg_0=0, var_13_arg_1=2, var_13_arg_2=3, var_16=3, var_17=0, var_17_arg_0=2, var_17_arg_1=3, var_18=0, var_18_arg_0=2, var_18_arg_1=3, var_19=0, var_19_arg_0=0, var_19_arg_1=0, var_4=0, var_9=1] [L82] EXPR var_13 & mask_SORT_2 VAL [bad_20_arg_0=0, init_7_arg_1=0, init_8_arg_1=0, input_3=0, mask_SORT_1=1, mask_SORT_2=4294967295, msb_SORT_1=1, msb_SORT_2=2147483648, next_14_arg_1=3, next_15_arg_1=2, state_5=2, state_6=2, var_10=3, var_10_arg_0=2, var_10_arg_1=1, var_11=3, var_11_arg_0=2, var_11_arg_1=1, var_12=3, var_12_arg_0=0, var_12_arg_1=2, var_12_arg_2=3, var_13 & mask_SORT_2=-8589934589, var_13=3, var_13_arg_0=0, var_13_arg_1=2, var_13_arg_2=3, var_16=3, var_17=0, var_17_arg_0=2, var_17_arg_1=3, var_18=0, var_18_arg_0=2, var_18_arg_1=3, var_19=0, var_19_arg_0=0, var_19_arg_1=0, var_4=0, var_9=1] [L82] var_13 = var_13 & mask_SORT_2 [L83] SORT_2 next_15_arg_1 = var_13; [L85] state_5 = next_14_arg_1 [L86] state_6 = next_15_arg_1 VAL [bad_20_arg_0=0, init_7_arg_1=0, init_8_arg_1=0, input_3=0, mask_SORT_1=1, mask_SORT_2=4294967295, msb_SORT_1=1, msb_SORT_2=2147483648, next_14_arg_1=3, next_15_arg_1=3, state_5=3, state_6=3, var_10=3, var_10_arg_0=2, var_10_arg_1=1, var_11=3, var_11_arg_0=2, var_11_arg_1=1, var_12=3, var_12_arg_0=0, var_12_arg_1=2, var_12_arg_2=3, var_13=3, var_13_arg_0=0, var_13_arg_1=2, var_13_arg_2=3, var_16=3, var_17=0, var_17_arg_0=2, var_17_arg_1=3, var_18=0, var_18_arg_0=2, var_18_arg_1=3, var_19=0, var_19_arg_0=0, var_19_arg_1=0, var_4=0, var_9=1] [L48] input_3 = __VERIFIER_nondet_uchar() [L49] EXPR input_3 & mask_SORT_1 VAL [bad_20_arg_0=0, init_7_arg_1=0, init_8_arg_1=0, input_3 & mask_SORT_1=0, input_3=0, mask_SORT_1=1, mask_SORT_2=4294967295, msb_SORT_1=1, msb_SORT_2=2147483648, next_14_arg_1=3, next_15_arg_1=3, state_5=3, state_6=3, var_10=3, var_10_arg_0=2, var_10_arg_1=1, var_11=3, var_11_arg_0=2, var_11_arg_1=1, var_12=3, var_12_arg_0=0, var_12_arg_1=2, var_12_arg_2=3, var_13=3, var_13_arg_0=0, var_13_arg_1=2, var_13_arg_2=3, var_16=3, var_17=0, var_17_arg_0=2, var_17_arg_1=3, var_18=0, var_18_arg_0=2, var_18_arg_1=3, var_19=0, var_19_arg_0=0, var_19_arg_1=0, var_4=0, var_9=1] [L49] input_3 = input_3 & mask_SORT_1 [L52] SORT_2 var_17_arg_0 = state_5; [L53] SORT_2 var_17_arg_1 = var_16; [L54] SORT_1 var_17 = var_17_arg_0 == var_17_arg_1; [L55] SORT_2 var_18_arg_0 = state_6; [L56] SORT_2 var_18_arg_1 = var_16; [L57] SORT_1 var_18 = var_18_arg_0 == var_18_arg_1; [L58] SORT_1 var_19_arg_0 = var_17; [L59] SORT_1 var_19_arg_1 = var_18; VAL [bad_20_arg_0=0, init_7_arg_1=0, init_8_arg_1=0, input_3=0, mask_SORT_1=1, mask_SORT_2=4294967295, msb_SORT_1=1, msb_SORT_2=2147483648, next_14_arg_1=3, next_15_arg_1=3, state_5=3, state_6=3, var_10=3, var_10_arg_0=2, var_10_arg_1=1, var_11=3, var_11_arg_0=2, var_11_arg_1=1, var_12=3, var_12_arg_0=0, var_12_arg_1=2, var_12_arg_2=3, var_13=3, var_13_arg_0=0, var_13_arg_1=2, var_13_arg_2=3, var_16=3, var_17=1, var_17_arg_0=3, var_17_arg_1=3, var_18=1, var_18_arg_0=3, var_18_arg_1=3, var_19=0, var_19_arg_0=1, var_19_arg_1=1, var_4=0, var_9=1] [L60] EXPR var_19_arg_0 & var_19_arg_1 VAL [bad_20_arg_0=0, init_7_arg_1=0, init_8_arg_1=0, input_3=0, mask_SORT_1=1, mask_SORT_2=4294967295, msb_SORT_1=1, msb_SORT_2=2147483648, next_14_arg_1=3, next_15_arg_1=3, state_5=3, state_6=3, var_10=3, var_10_arg_0=2, var_10_arg_1=1, var_11=3, var_11_arg_0=2, var_11_arg_1=1, var_12=3, var_12_arg_0=0, var_12_arg_1=2, var_12_arg_2=3, var_13=3, var_13_arg_0=0, var_13_arg_1=2, var_13_arg_2=3, var_16=3, var_17=1, var_17_arg_0=3, var_17_arg_1=3, var_18=1, var_18_arg_0=3, var_18_arg_1=3, var_19=0, var_19_arg_0 & var_19_arg_1=1, var_19_arg_0=1, var_19_arg_1=1, var_4=0, var_9=1] [L60] SORT_1 var_19 = var_19_arg_0 & var_19_arg_1; [L61] EXPR var_19 & mask_SORT_1 VAL [bad_20_arg_0=0, init_7_arg_1=0, init_8_arg_1=0, input_3=0, mask_SORT_1=1, mask_SORT_2=4294967295, msb_SORT_1=1, msb_SORT_2=2147483648, next_14_arg_1=3, next_15_arg_1=3, state_5=3, state_6=3, var_10=3, var_10_arg_0=2, var_10_arg_1=1, var_11=3, var_11_arg_0=2, var_11_arg_1=1, var_12=3, var_12_arg_0=0, var_12_arg_1=2, var_12_arg_2=3, var_13=3, var_13_arg_0=0, var_13_arg_1=2, var_13_arg_2=3, var_16=3, var_17=1, var_17_arg_0=3, var_17_arg_1=3, var_18=1, var_18_arg_0=3, var_18_arg_1=3, var_19 & mask_SORT_1=1, var_19=1, var_19_arg_0=1, var_19_arg_1=1, var_4=0, var_9=1] [L61] var_19 = var_19 & mask_SORT_1 [L62] SORT_1 bad_20_arg_0 = var_19; [L63] CALL __VERIFIER_assert(!(bad_20_arg_0)) [L22] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L22] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 35 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 219.0s, OverallIterations: 16, TraceHistogramMax: 4, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 31.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 5835 SdHoareTripleChecker+Valid, 6.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5835 mSDsluCounter, 5436 SdHoareTripleChecker+Invalid, 5.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4771 mSDsCounter, 236 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5892 IncrementalHoareTripleChecker+Invalid, 6128 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 236 mSolverCounterUnsat, 665 mSDtfsCounter, 5892 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1133 GetRequests, 514 SyntacticMatches, 14 SemanticMatches, 605 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26541 ImplicationChecksByTransitivity, 99.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=184occurred in iteration=15, InterpolantAutomatonStates: 450, 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, 15 MinimizatonAttempts, 1960 StatesRemovedByMinimization, 14 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.8s SatisfiabilityAnalysisTime, 183.6s InterpolantComputationTime, 943 NumberOfCodeBlocks, 943 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 1157 ConstructedInterpolants, 0 QuantifiedInterpolants, 19054 SizeOfPredicates, 164 NumberOfNonLiveVariables, 1753 ConjunctsInSsa, 406 ConjunctsInUnsatCore, 27 InterpolantComputations, 9 PerfectInterpolantSequences, 462/801 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 [2023-11-06 21:18:35,887 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22083354-7848-440f-9016-104776cadd7b/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22083354-7848-440f-9016-104776cadd7b/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22083354-7848-440f-9016-104776cadd7b/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22083354-7848-440f-9016-104776cadd7b/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22083354-7848-440f-9016-104776cadd7b/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.twocount32.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22083354-7848-440f-9016-104776cadd7b/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22083354-7848-440f-9016-104776cadd7b/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 1f88bd3867028d60c5c1c8fa67c55aaa517a9782eae2d2c8498cbbc5893e8cf0 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 21:18:38,560 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 21:18:38,705 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22083354-7848-440f-9016-104776cadd7b/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2023-11-06 21:18:38,714 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 21:18:38,715 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 21:18:38,770 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 21:18:38,771 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 21:18:38,772 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 21:18:38,773 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 21:18:38,778 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 21:18:38,779 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 21:18:38,780 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 21:18:38,780 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 21:18:38,783 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 21:18:38,783 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 21:18:38,784 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 21:18:38,784 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 21:18:38,785 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 21:18:38,785 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 21:18:38,786 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-06 21:18:38,787 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-06 21:18:38,787 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-06 21:18:38,788 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 21:18:38,788 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 21:18:38,789 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 21:18:38,789 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 21:18:38,790 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 21:18:38,790 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 21:18:38,791 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 21:18:38,791 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 21:18:38,793 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 21:18:38,793 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-06 21:18:38,793 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-06 21:18:38,794 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 21:18:38,794 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 21:18:38,794 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 21:18:38,795 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 21:18:38,795 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-06 21:18:38,795 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 21:18:38,797 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_22083354-7848-440f-9016-104776cadd7b/bin/uautomizer-verify-WvqO1wxjHP/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22083354-7848-440f-9016-104776cadd7b/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1f88bd3867028d60c5c1c8fa67c55aaa517a9782eae2d2c8498cbbc5893e8cf0 [2023-11-06 21:18:39,241 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 21:18:39,266 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 21:18:39,269 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 21:18:39,270 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 21:18:39,271 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 21:18:39,273 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22083354-7848-440f-9016-104776cadd7b/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.twocount32.c [2023-11-06 21:18:42,730 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 21:18:42,969 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 21:18:42,970 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22083354-7848-440f-9016-104776cadd7b/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.twocount32.c [2023-11-06 21:18:42,983 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22083354-7848-440f-9016-104776cadd7b/bin/uautomizer-verify-WvqO1wxjHP/data/f4b0622c7/bad5da43add9483e952750e0e7072752/FLAGe3a1a8e93 [2023-11-06 21:18:42,999 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22083354-7848-440f-9016-104776cadd7b/bin/uautomizer-verify-WvqO1wxjHP/data/f4b0622c7/bad5da43add9483e952750e0e7072752 [2023-11-06 21:18:43,002 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 21:18:43,004 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 21:18:43,006 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 21:18:43,006 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 21:18:43,012 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 21:18:43,013 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:18:43" (1/1) ... [2023-11-06 21:18:43,014 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@668f5579 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:18:43, skipping insertion in model container [2023-11-06 21:18:43,014 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:18:43" (1/1) ... [2023-11-06 21:18:43,039 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 21:18:43,217 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_22083354-7848-440f-9016-104776cadd7b/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.twocount32.c[1260,1273] [2023-11-06 21:18:43,274 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 21:18:43,294 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 21:18:43,314 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_22083354-7848-440f-9016-104776cadd7b/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.twocount32.c[1260,1273] [2023-11-06 21:18:43,353 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 21:18:43,371 INFO L206 MainTranslator]: Completed translation [2023-11-06 21:18:43,372 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:18:43 WrapperNode [2023-11-06 21:18:43,372 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 21:18:43,374 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 21:18:43,374 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 21:18:43,374 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 21:18:43,382 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:18:43" (1/1) ... [2023-11-06 21:18:43,395 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:18:43" (1/1) ... [2023-11-06 21:18:43,432 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 76 [2023-11-06 21:18:43,432 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 21:18:43,434 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 21:18:43,434 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 21:18:43,435 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 21:18:43,445 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:18:43" (1/1) ... [2023-11-06 21:18:43,445 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:18:43" (1/1) ... [2023-11-06 21:18:43,459 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:18:43" (1/1) ... [2023-11-06 21:18:43,460 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:18:43" (1/1) ... [2023-11-06 21:18:43,472 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:18:43" (1/1) ... [2023-11-06 21:18:43,481 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:18:43" (1/1) ... [2023-11-06 21:18:43,483 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:18:43" (1/1) ... [2023-11-06 21:18:43,485 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:18:43" (1/1) ... [2023-11-06 21:18:43,489 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 21:18:43,495 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 21:18:43,496 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 21:18:43,496 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 21:18:43,497 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:18:43" (1/1) ... [2023-11-06 21:18:43,503 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 21:18:43,525 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22083354-7848-440f-9016-104776cadd7b/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:18:43,549 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22083354-7848-440f-9016-104776cadd7b/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 21:18:43,565 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22083354-7848-440f-9016-104776cadd7b/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 21:18:43,592 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 21:18:43,592 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-06 21:18:43,593 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 21:18:43,593 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 21:18:43,710 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 21:18:43,712 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 21:18:43,933 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 21:18:43,960 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 21:18:43,960 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-06 21:18:43,962 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:18:43 BoogieIcfgContainer [2023-11-06 21:18:43,969 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 21:18:43,972 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 21:18:43,972 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 21:18:43,977 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 21:18:43,978 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 09:18:43" (1/3) ... [2023-11-06 21:18:43,979 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c735b90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:18:43, skipping insertion in model container [2023-11-06 21:18:43,979 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:18:43" (2/3) ... [2023-11-06 21:18:43,980 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c735b90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:18:43, skipping insertion in model container [2023-11-06 21:18:43,980 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:18:43" (3/3) ... [2023-11-06 21:18:43,985 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.twocount32.c [2023-11-06 21:18:44,020 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 21:18:44,021 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-06 21:18:44,067 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 21:18:44,074 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=LoopsAndPotentialCycles, 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;@158e4978, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 21:18:44,075 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-06 21:18:44,079 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) [2023-11-06 21:18:44,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-06 21:18:44,085 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:18:44,086 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-06 21:18:44,086 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:18:44,092 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:18:44,092 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2023-11-06 21:18:44,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 21:18:44,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1758952267] [2023-11-06 21:18:44,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:18:44,111 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 [2023-11-06 21:18:44,112 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22083354-7848-440f-9016-104776cadd7b/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 21:18:44,115 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22083354-7848-440f-9016-104776cadd7b/bin/uautomizer-verify-WvqO1wxjHP/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) [2023-11-06 21:18:44,120 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22083354-7848-440f-9016-104776cadd7b/bin/uautomizer-verify-WvqO1wxjHP/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 [2023-11-06 21:18:44,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:18:44,210 INFO L262 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-06 21:18:44,217 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:18:44,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:18:44,400 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 21:18:44,401 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 21:18:44,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1758952267] [2023-11-06 21:18:44,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1758952267] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:18:44,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:18:44,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 21:18:44,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300800182] [2023-11-06 21:18:44,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:18:44,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 21:18:44,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 21:18:44,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 21:18:44,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 21:18:44,440 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) [2023-11-06 21:18:44,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:18:44,498 INFO L93 Difference]: Finished difference Result 19 states and 27 transitions. [2023-11-06 21:18:44,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 21:18:44,500 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 [2023-11-06 21:18:44,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:18:44,508 INFO L225 Difference]: With dead ends: 19 [2023-11-06 21:18:44,508 INFO L226 Difference]: Without dead ends: 10 [2023-11-06 21:18:44,511 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 21:18:44,514 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 3 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 21:18:44,515 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 11 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 21:18:44,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2023-11-06 21:18:44,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9. [2023-11-06 21:18:44,545 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) [2023-11-06 21:18:44,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2023-11-06 21:18:44,547 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2023-11-06 21:18:44,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:18:44,547 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2023-11-06 21:18:44,548 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) [2023-11-06 21:18:44,548 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2023-11-06 21:18:44,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-06 21:18:44,548 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:18:44,549 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2023-11-06 21:18:44,560 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22083354-7848-440f-9016-104776cadd7b/bin/uautomizer-verify-WvqO1wxjHP/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 [2023-11-06 21:18:44,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22083354-7848-440f-9016-104776cadd7b/bin/uautomizer-verify-WvqO1wxjHP/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 [2023-11-06 21:18:44,760 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:18:44,761 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:18:44,761 INFO L85 PathProgramCache]: Analyzing trace with hash 271073635, now seen corresponding path program 1 times [2023-11-06 21:18:44,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 21:18:44,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1238279716] [2023-11-06 21:18:44,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:18:44,763 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 [2023-11-06 21:18:44,763 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22083354-7848-440f-9016-104776cadd7b/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 21:18:44,765 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22083354-7848-440f-9016-104776cadd7b/bin/uautomizer-verify-WvqO1wxjHP/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) [2023-11-06 21:18:44,766 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22083354-7848-440f-9016-104776cadd7b/bin/uautomizer-verify-WvqO1wxjHP/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 [2023-11-06 21:18:44,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:18:44,915 INFO L262 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-06 21:18:44,918 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:18:45,411 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:18:45,411 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 21:18:45,629 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:18:45,629 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 21:18:45,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1238279716] [2023-11-06 21:18:45,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1238279716] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 21:18:45,630 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 21:18:45,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-11-06 21:18:45,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375442429] [2023-11-06 21:18:45,631 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 21:18:45,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 21:18:45,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 21:18:45,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 21:18:45,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-11-06 21:18:45,634 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 8 states, 8 states have (on average 1.75) internal successors, (14), 8 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) [2023-11-06 21:18:45,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:18:45,874 INFO L93 Difference]: Finished difference Result 18 states and 19 transitions. [2023-11-06 21:18:45,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-06 21:18:45,875 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-11-06 21:18:45,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:18:45,876 INFO L225 Difference]: With dead ends: 18 [2023-11-06 21:18:45,876 INFO L226 Difference]: Without dead ends: 16 [2023-11-06 21:18:45,877 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2023-11-06 21:18:45,878 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 7 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 21:18:45,879 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 17 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 21:18:45,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2023-11-06 21:18:45,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 15. [2023-11-06 21:18:45,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.0714285714285714) internal successors, (15), 14 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:18:45,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2023-11-06 21:18:45,886 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 8 [2023-11-06 21:18:45,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:18:45,887 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2023-11-06 21:18:45,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.75) internal successors, (14), 8 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) [2023-11-06 21:18:45,897 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2023-11-06 21:18:45,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-06 21:18:45,897 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:18:45,898 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1] [2023-11-06 21:18:45,918 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22083354-7848-440f-9016-104776cadd7b/bin/uautomizer-verify-WvqO1wxjHP/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 [2023-11-06 21:18:46,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22083354-7848-440f-9016-104776cadd7b/bin/uautomizer-verify-WvqO1wxjHP/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 [2023-11-06 21:18:46,109 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:18:46,110 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:18:46,110 INFO L85 PathProgramCache]: Analyzing trace with hash 1580781475, now seen corresponding path program 2 times [2023-11-06 21:18:46,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 21:18:46,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2144902039] [2023-11-06 21:18:46,112 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 21:18:46,112 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 [2023-11-06 21:18:46,112 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22083354-7848-440f-9016-104776cadd7b/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 21:18:46,117 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22083354-7848-440f-9016-104776cadd7b/bin/uautomizer-verify-WvqO1wxjHP/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) [2023-11-06 21:18:46,118 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22083354-7848-440f-9016-104776cadd7b/bin/uautomizer-verify-WvqO1wxjHP/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 [2023-11-06 21:18:46,233 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 21:18:46,233 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 21:18:46,241 INFO L262 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 66 conjunts are in the unsatisfiable core [2023-11-06 21:18:46,247 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:18:48,250 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:18:48,250 INFO L327 TraceCheckSpWp]: Computing backward predicates...