./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.swap_three.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_156c75a9-873f-4e34-be92-f603188ef106/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_156c75a9-873f-4e34-be92-f603188ef106/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_156c75a9-873f-4e34-be92-f603188ef106/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_156c75a9-873f-4e34-be92-f603188ef106/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.swap_three.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_156c75a9-873f-4e34-be92-f603188ef106/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_156c75a9-873f-4e34-be92-f603188ef106/bin/uautomizer-verify-uCwYo4JHxu --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash a995c16e34c6a8c947423a8daf73fb5637408e6de846a052a4473f47c82db47d --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:32:52,954 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:32:53,036 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_156c75a9-873f-4e34-be92-f603188ef106/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-19 07:32:53,042 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:32:53,043 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:32:53,069 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:32:53,070 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:32:53,070 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:32:53,071 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:32:53,072 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:32:53,073 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:32:53,074 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:32:53,074 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:32:53,075 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:32:53,076 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:32:53,076 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:32:53,077 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:32:53,077 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:32:53,078 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:32:53,079 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:32:53,079 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:32:53,082 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:32:53,082 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:32:53,083 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:32:53,083 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:32:53,084 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:32:53,084 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:32:53,085 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:32:53,087 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:32:53,087 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:32:53,088 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:32:53,089 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:32:53,089 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:32:53,089 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:32:53,090 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:32:53,090 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:32:53,090 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_156c75a9-873f-4e34-be92-f603188ef106/bin/uautomizer-verify-uCwYo4JHxu/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_156c75a9-873f-4e34-be92-f603188ef106/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a995c16e34c6a8c947423a8daf73fb5637408e6de846a052a4473f47c82db47d [2023-11-19 07:32:53,439 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:32:53,473 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:32:53,476 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:32:53,478 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:32:53,479 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:32:53,480 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_156c75a9-873f-4e34-be92-f603188ef106/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.swap_three.c [2023-11-19 07:32:56,691 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:32:56,907 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:32:56,908 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_156c75a9-873f-4e34-be92-f603188ef106/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.swap_three.c [2023-11-19 07:32:56,918 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_156c75a9-873f-4e34-be92-f603188ef106/bin/uautomizer-verify-uCwYo4JHxu/data/4b772a07b/0742db766cb04955bee91b1c37a2117c/FLAG781440fa6 [2023-11-19 07:32:56,934 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_156c75a9-873f-4e34-be92-f603188ef106/bin/uautomizer-verify-uCwYo4JHxu/data/4b772a07b/0742db766cb04955bee91b1c37a2117c [2023-11-19 07:32:56,937 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:32:56,938 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:32:56,940 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:32:56,940 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:32:56,954 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:32:56,955 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:32:56" (1/1) ... [2023-11-19 07:32:56,959 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@121c2e2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:32:56, skipping insertion in model container [2023-11-19 07:32:56,960 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:32:56" (1/1) ... [2023-11-19 07:32:56,998 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:32:57,162 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_156c75a9-873f-4e34-be92-f603188ef106/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.swap_three.c[1250,1263] [2023-11-19 07:32:57,211 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:32:57,231 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:32:57,253 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_156c75a9-873f-4e34-be92-f603188ef106/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.swap_three.c[1250,1263] [2023-11-19 07:32:57,307 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:32:57,332 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:32:57,333 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:32:57 WrapperNode [2023-11-19 07:32:57,333 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:32:57,334 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:32:57,335 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:32:57,335 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:32:57,344 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:32:57" (1/1) ... [2023-11-19 07:32:57,367 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:32:57" (1/1) ... [2023-11-19 07:32:57,411 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 177 [2023-11-19 07:32:57,411 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:32:57,412 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:32:57,413 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:32:57,413 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:32:57,433 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:32:57" (1/1) ... [2023-11-19 07:32:57,433 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:32:57" (1/1) ... [2023-11-19 07:32:57,437 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:32:57" (1/1) ... [2023-11-19 07:32:57,437 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:32:57" (1/1) ... [2023-11-19 07:32:57,460 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:32:57" (1/1) ... [2023-11-19 07:32:57,464 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:32:57" (1/1) ... [2023-11-19 07:32:57,466 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:32:57" (1/1) ... [2023-11-19 07:32:57,469 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:32:57" (1/1) ... [2023-11-19 07:32:57,478 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:32:57,481 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:32:57,482 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:32:57,482 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:32:57,483 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:32:57" (1/1) ... [2023-11-19 07:32:57,489 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:32:57,502 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_156c75a9-873f-4e34-be92-f603188ef106/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:32:57,518 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_156c75a9-873f-4e34-be92-f603188ef106/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:32:57,553 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_156c75a9-873f-4e34-be92-f603188ef106/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:32:57,570 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:32:57,571 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:32:57,571 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:32:57,571 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:32:57,668 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:32:57,671 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:32:58,101 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:32:58,118 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:32:58,118 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 07:32:58,122 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:32:58 BoogieIcfgContainer [2023-11-19 07:32:58,129 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:32:58,132 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:32:58,132 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:32:58,137 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:32:58,138 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:32:56" (1/3) ... [2023-11-19 07:32:58,139 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@645a0dbb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:32:58, skipping insertion in model container [2023-11-19 07:32:58,139 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:32:57" (2/3) ... [2023-11-19 07:32:58,140 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@645a0dbb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:32:58, skipping insertion in model container [2023-11-19 07:32:58,141 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:32:58" (3/3) ... [2023-11-19 07:32:58,143 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.swap_three.c [2023-11-19 07:32:58,164 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:32:58,164 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 07:32:58,233 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:32:58,242 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@6b395d94, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:32:58,243 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 07:32:58,247 INFO L276 IsEmpty]: Start isEmpty. Operand has 41 states, 39 states have (on average 1.6153846153846154) internal successors, (63), 40 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:32:58,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-11-19 07:32:58,256 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:32:58,257 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:32:58,259 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:32:58,268 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:32:58,268 INFO L85 PathProgramCache]: Analyzing trace with hash 609282801, now seen corresponding path program 1 times [2023-11-19 07:32:58,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:32:58,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2242711] [2023-11-19 07:32:58,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:32:58,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:32:58,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:32:59,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:32:59,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:32:59,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2242711] [2023-11-19 07:32:59,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2242711] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:32:59,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:32:59,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:32:59,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476733834] [2023-11-19 07:32:59,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:32:59,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:32:59,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:32:59,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:32:59,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:32:59,148 INFO L87 Difference]: Start difference. First operand has 41 states, 39 states have (on average 1.6153846153846154) internal successors, (63), 40 states have internal predecessors, (63), 0 states have call successors, (0), 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 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:32:59,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:32:59,227 INFO L93 Difference]: Finished difference Result 69 states and 109 transitions. [2023-11-19 07:32:59,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:32:59,234 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 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 25 [2023-11-19 07:32:59,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:32:59,243 INFO L225 Difference]: With dead ends: 69 [2023-11-19 07:32:59,243 INFO L226 Difference]: Without dead ends: 39 [2023-11-19 07:32:59,246 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:32:59,250 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 1 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 159 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 [2023-11-19 07:32:59,251 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 159 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:32:59,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2023-11-19 07:32:59,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2023-11-19 07:32:59,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.5526315789473684) internal successors, (59), 38 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:32:59,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 59 transitions. [2023-11-19 07:32:59,288 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 59 transitions. Word has length 25 [2023-11-19 07:32:59,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:32:59,289 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 59 transitions. [2023-11-19 07:32:59,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:32:59,290 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 59 transitions. [2023-11-19 07:32:59,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-11-19 07:32:59,291 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:32:59,291 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:32:59,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:32:59,292 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:32:59,293 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:32:59,293 INFO L85 PathProgramCache]: Analyzing trace with hash 1709682297, now seen corresponding path program 1 times [2023-11-19 07:32:59,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:32:59,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330833507] [2023-11-19 07:32:59,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:32:59,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:32:59,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:32:59,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:32:59,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:32:59,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330833507] [2023-11-19 07:32:59,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330833507] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:32:59,506 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:32:59,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:32:59,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391994847] [2023-11-19 07:32:59,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:32:59,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:32:59,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:32:59,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:32:59,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:32:59,514 INFO L87 Difference]: Start difference. First operand 39 states and 59 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:32:59,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:32:59,568 INFO L93 Difference]: Finished difference Result 70 states and 105 transitions. [2023-11-19 07:32:59,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:32:59,569 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2023-11-19 07:32:59,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:32:59,573 INFO L225 Difference]: With dead ends: 70 [2023-11-19 07:32:59,573 INFO L226 Difference]: Without dead ends: 42 [2023-11-19 07:32:59,577 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 [2023-11-19 07:32:59,580 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 1 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 156 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 [2023-11-19 07:32:59,581 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 156 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:32:59,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2023-11-19 07:32:59,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2023-11-19 07:32:59,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 40 states have (on average 1.525) internal successors, (61), 40 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:32:59,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 61 transitions. [2023-11-19 07:32:59,589 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 61 transitions. Word has length 26 [2023-11-19 07:32:59,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:32:59,591 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 61 transitions. [2023-11-19 07:32:59,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:32:59,591 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 61 transitions. [2023-11-19 07:32:59,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-19 07:32:59,594 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:32:59,594 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:32:59,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 07:32:59,595 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:32:59,595 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:32:59,601 INFO L85 PathProgramCache]: Analyzing trace with hash 1248323849, now seen corresponding path program 1 times [2023-11-19 07:32:59,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:32:59,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487587889] [2023-11-19 07:32:59,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:32:59,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:32:59,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:32:59,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:32:59,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:32:59,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487587889] [2023-11-19 07:32:59,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487587889] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:32:59,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:32:59,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:32:59,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821652766] [2023-11-19 07:32:59,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:32:59,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:32:59,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:32:59,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:32:59,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:32:59,878 INFO L87 Difference]: Start difference. First operand 41 states and 61 transitions. Second operand has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:33:00,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:33:00,022 INFO L93 Difference]: Finished difference Result 101 states and 149 transitions. [2023-11-19 07:33:00,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:33:00,023 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 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 27 [2023-11-19 07:33:00,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:33:00,025 INFO L225 Difference]: With dead ends: 101 [2023-11-19 07:33:00,025 INFO L226 Difference]: Without dead ends: 71 [2023-11-19 07:33:00,026 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:33:00,027 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 127 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:33:00,028 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 82 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:33:00,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2023-11-19 07:33:00,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 44. [2023-11-19 07:33:00,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 43 states have (on average 1.4883720930232558) internal successors, (64), 43 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:33:00,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 64 transitions. [2023-11-19 07:33:00,036 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 64 transitions. Word has length 27 [2023-11-19 07:33:00,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:33:00,037 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 64 transitions. [2023-11-19 07:33:00,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:33:00,037 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 64 transitions. [2023-11-19 07:33:00,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-11-19 07:33:00,038 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:33:00,039 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:33:00,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 07:33:00,039 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:33:00,040 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:33:00,040 INFO L85 PathProgramCache]: Analyzing trace with hash -690208267, now seen corresponding path program 1 times [2023-11-19 07:33:00,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:33:00,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822266491] [2023-11-19 07:33:00,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:33:00,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:33:00,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:00,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:33:00,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:33:00,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822266491] [2023-11-19 07:33:00,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822266491] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:33:00,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:33:00,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 07:33:00,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523430555] [2023-11-19 07:33:00,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:33:00,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:33:00,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:33:00,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:33:00,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:33:00,230 INFO L87 Difference]: Start difference. First operand 44 states and 64 transitions. Second operand has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 6 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:33:00,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:33:00,357 INFO L93 Difference]: Finished difference Result 101 states and 147 transitions. [2023-11-19 07:33:00,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:33:00,358 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 6 states have internal predecessors, (28), 0 states have call successors, (0), 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 28 [2023-11-19 07:33:00,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:33:00,359 INFO L225 Difference]: With dead ends: 101 [2023-11-19 07:33:00,359 INFO L226 Difference]: Without dead ends: 71 [2023-11-19 07:33:00,360 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-11-19 07:33:00,361 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 123 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:33:00,362 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 147 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:33:00,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2023-11-19 07:33:00,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 46. [2023-11-19 07:33:00,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 1.4666666666666666) internal successors, (66), 45 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) [2023-11-19 07:33:00,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 66 transitions. [2023-11-19 07:33:00,370 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 66 transitions. Word has length 28 [2023-11-19 07:33:00,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:33:00,371 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 66 transitions. [2023-11-19 07:33:00,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 6 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:33:00,372 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 66 transitions. [2023-11-19 07:33:00,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-11-19 07:33:00,373 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:33:00,373 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:33:00,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 07:33:00,373 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:33:00,374 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:33:00,374 INFO L85 PathProgramCache]: Analyzing trace with hash -1041452379, now seen corresponding path program 1 times [2023-11-19 07:33:00,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:33:00,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485483084] [2023-11-19 07:33:00,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:33:00,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:33:00,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:00,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:33:00,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:33:00,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485483084] [2023-11-19 07:33:00,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485483084] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:33:00,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:33:00,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 07:33:00,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208507175] [2023-11-19 07:33:00,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:33:00,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:33:00,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:33:00,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:33:00,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:33:00,598 INFO L87 Difference]: Start difference. First operand 46 states and 66 transitions. Second operand has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:33:00,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:33:00,715 INFO L93 Difference]: Finished difference Result 101 states and 146 transitions. [2023-11-19 07:33:00,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:33:00,717 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 0 states have call successors, (0), 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 29 [2023-11-19 07:33:00,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:33:00,721 INFO L225 Difference]: With dead ends: 101 [2023-11-19 07:33:00,721 INFO L226 Difference]: Without dead ends: 71 [2023-11-19 07:33:00,723 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-11-19 07:33:00,730 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 143 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:33:00,730 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 122 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:33:00,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2023-11-19 07:33:00,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 52. [2023-11-19 07:33:00,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 1.4705882352941178) internal successors, (75), 51 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:33:00,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 75 transitions. [2023-11-19 07:33:00,746 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 75 transitions. Word has length 29 [2023-11-19 07:33:00,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:33:00,747 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 75 transitions. [2023-11-19 07:33:00,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:33:00,747 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 75 transitions. [2023-11-19 07:33:00,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-11-19 07:33:00,751 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:33:00,751 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:33:00,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 07:33:00,751 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:33:00,752 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:33:00,753 INFO L85 PathProgramCache]: Analyzing trace with hash -347880407, now seen corresponding path program 1 times [2023-11-19 07:33:00,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:33:00,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005268142] [2023-11-19 07:33:00,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:33:00,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:33:00,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:00,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:33:00,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:33:00,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005268142] [2023-11-19 07:33:00,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005268142] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:33:00,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:33:00,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:33:00,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870135498] [2023-11-19 07:33:00,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:33:00,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:33:00,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:33:00,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:33:00,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:33:01,000 INFO L87 Difference]: Start difference. First operand 52 states and 75 transitions. Second operand has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:33:01,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:33:01,136 INFO L93 Difference]: Finished difference Result 106 states and 152 transitions. [2023-11-19 07:33:01,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:33:01,137 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2023-11-19 07:33:01,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:33:01,138 INFO L225 Difference]: With dead ends: 106 [2023-11-19 07:33:01,138 INFO L226 Difference]: Without dead ends: 71 [2023-11-19 07:33:01,138 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:33:01,139 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 117 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:33:01,140 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 81 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:33:01,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2023-11-19 07:33:01,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 52. [2023-11-19 07:33:01,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 1.4509803921568627) internal successors, (74), 51 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) [2023-11-19 07:33:01,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 74 transitions. [2023-11-19 07:33:01,147 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 74 transitions. Word has length 30 [2023-11-19 07:33:01,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:33:01,147 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 74 transitions. [2023-11-19 07:33:01,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:33:01,148 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 74 transitions. [2023-11-19 07:33:01,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-11-19 07:33:01,149 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:33:01,149 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:33:01,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 07:33:01,149 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:33:01,150 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:33:01,150 INFO L85 PathProgramCache]: Analyzing trace with hash -1936228309, now seen corresponding path program 1 times [2023-11-19 07:33:01,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:33:01,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551465560] [2023-11-19 07:33:01,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:33:01,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:33:01,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:01,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:33:01,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:33:01,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551465560] [2023-11-19 07:33:01,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551465560] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:33:01,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:33:01,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:33:01,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413287144] [2023-11-19 07:33:01,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:33:01,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:33:01,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:33:01,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:33:01,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:33:01,339 INFO L87 Difference]: Start difference. First operand 52 states and 74 transitions. Second operand has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:33:01,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:33:01,461 INFO L93 Difference]: Finished difference Result 101 states and 144 transitions. [2023-11-19 07:33:01,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:33:01,461 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2023-11-19 07:33:01,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:33:01,463 INFO L225 Difference]: With dead ends: 101 [2023-11-19 07:33:01,463 INFO L226 Difference]: Without dead ends: 71 [2023-11-19 07:33:01,464 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:33:01,467 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 110 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:33:01,467 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 81 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:33:01,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2023-11-19 07:33:01,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 53. [2023-11-19 07:33:01,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 52 states have (on average 1.4423076923076923) internal successors, (75), 52 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:33:01,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 75 transitions. [2023-11-19 07:33:01,477 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 75 transitions. Word has length 30 [2023-11-19 07:33:01,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:33:01,477 INFO L495 AbstractCegarLoop]: Abstraction has 53 states and 75 transitions. [2023-11-19 07:33:01,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:33:01,478 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 75 transitions. [2023-11-19 07:33:01,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-11-19 07:33:01,479 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:33:01,479 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:33:01,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 07:33:01,480 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:33:01,480 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:33:01,481 INFO L85 PathProgramCache]: Analyzing trace with hash -1678062871, now seen corresponding path program 1 times [2023-11-19 07:33:01,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:33:01,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889225598] [2023-11-19 07:33:01,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:33:01,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:33:01,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:01,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:33:01,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:33:01,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889225598] [2023-11-19 07:33:01,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889225598] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:33:01,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:33:01,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 07:33:01,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149047487] [2023-11-19 07:33:01,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:33:01,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:33:01,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:33:01,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:33:01,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:33:01,801 INFO L87 Difference]: Start difference. First operand 53 states and 75 transitions. Second operand has 6 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:33:01,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:33:01,918 INFO L93 Difference]: Finished difference Result 114 states and 164 transitions. [2023-11-19 07:33:01,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:33:01,919 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2023-11-19 07:33:01,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:33:01,920 INFO L225 Difference]: With dead ends: 114 [2023-11-19 07:33:01,920 INFO L226 Difference]: Without dead ends: 84 [2023-11-19 07:33:01,921 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2023-11-19 07:33:01,921 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 163 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 220 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:33:01,922 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 220 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:33:01,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2023-11-19 07:33:01,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 56. [2023-11-19 07:33:01,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 1.4181818181818182) internal successors, (78), 55 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:33:01,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 78 transitions. [2023-11-19 07:33:01,928 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 78 transitions. Word has length 30 [2023-11-19 07:33:01,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:33:01,929 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 78 transitions. [2023-11-19 07:33:01,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:33:01,929 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 78 transitions. [2023-11-19 07:33:01,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-11-19 07:33:01,930 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:33:01,930 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:33:01,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-19 07:33:01,931 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:33:01,931 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:33:01,931 INFO L85 PathProgramCache]: Analyzing trace with hash 96944491, now seen corresponding path program 1 times [2023-11-19 07:33:01,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:33:01,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165523629] [2023-11-19 07:33:01,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:33:01,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:33:01,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:02,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:33:02,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:33:02,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165523629] [2023-11-19 07:33:02,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165523629] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:33:02,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:33:02,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-19 07:33:02,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830380416] [2023-11-19 07:33:02,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:33:02,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:33:02,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:33:02,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:33:02,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:33:02,268 INFO L87 Difference]: Start difference. First operand 56 states and 78 transitions. Second operand has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:33:02,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:33:02,370 INFO L93 Difference]: Finished difference Result 94 states and 132 transitions. [2023-11-19 07:33:02,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:33:02,371 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2023-11-19 07:33:02,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:33:02,373 INFO L225 Difference]: With dead ends: 94 [2023-11-19 07:33:02,374 INFO L226 Difference]: Without dead ends: 61 [2023-11-19 07:33:02,377 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-11-19 07:33:02,380 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 74 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 297 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:33:02,381 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 297 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:33:02,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2023-11-19 07:33:02,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 56. [2023-11-19 07:33:02,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 1.4) internal successors, (77), 55 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:33:02,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 77 transitions. [2023-11-19 07:33:02,397 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 77 transitions. Word has length 30 [2023-11-19 07:33:02,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:33:02,397 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 77 transitions. [2023-11-19 07:33:02,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:33:02,398 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 77 transitions. [2023-11-19 07:33:02,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-11-19 07:33:02,403 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:33:02,403 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:33:02,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-19 07:33:02,404 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:33:02,405 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:33:02,410 INFO L85 PathProgramCache]: Analyzing trace with hash 96884909, now seen corresponding path program 1 times [2023-11-19 07:33:02,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:33:02,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565937881] [2023-11-19 07:33:02,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:33:02,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:33:02,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:33:02,442 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:33:02,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:33:02,503 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:33:02,505 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 07:33:02,506 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-19 07:33:02,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-19 07:33:02,512 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:33:02,515 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-19 07:33:02,560 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet5 could not be translated [2023-11-19 07:33:02,561 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet4 could not be translated [2023-11-19 07:33:02,562 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet6 could not be translated [2023-11-19 07:33:02,563 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet7 could not be translated [2023-11-19 07:33:02,563 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet9 could not be translated [2023-11-19 07:33:02,564 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet8 could not be translated [2023-11-19 07:33:02,567 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet12 could not be translated [2023-11-19 07:33:02,577 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet13 could not be translated [2023-11-19 07:33:02,581 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet14 could not be translated [2023-11-19 07:33:02,583 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet15 could not be translated [2023-11-19 07:33:02,585 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet16 could not be translated [2023-11-19 07:33:02,590 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet17 could not be translated [2023-11-19 07:33:02,598 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet18 could not be translated [2023-11-19 07:33:02,598 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2023-11-19 07:33:02,611 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 07:33:02 BoogieIcfgContainer [2023-11-19 07:33:02,614 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-19 07:33:02,615 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 07:33:02,615 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 07:33:02,615 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 07:33:02,616 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:32:58" (3/4) ... [2023-11-19 07:33:02,619 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-19 07:33:02,620 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 07:33:02,621 INFO L158 Benchmark]: Toolchain (without parser) took 5682.38ms. Allocated memory was 178.3MB in the beginning and 213.9MB in the end (delta: 35.7MB). Free memory was 132.2MB in the beginning and 131.0MB in the end (delta: 1.2MB). Peak memory consumption was 39.0MB. Max. memory is 16.1GB. [2023-11-19 07:33:02,621 INFO L158 Benchmark]: CDTParser took 0.71ms. Allocated memory is still 134.2MB. Free memory is still 80.1MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 07:33:02,621 INFO L158 Benchmark]: CACSL2BoogieTranslator took 393.64ms. Allocated memory is still 178.3MB. Free memory was 131.6MB in the beginning and 119.6MB in the end (delta: 12.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-19 07:33:02,622 INFO L158 Benchmark]: Boogie Procedure Inliner took 77.32ms. Allocated memory is still 178.3MB. Free memory was 119.6MB in the beginning and 116.6MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 07:33:02,622 INFO L158 Benchmark]: Boogie Preprocessor took 67.69ms. Allocated memory is still 178.3MB. Free memory was 116.6MB in the beginning and 114.8MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 07:33:02,623 INFO L158 Benchmark]: RCFGBuilder took 648.27ms. Allocated memory is still 178.3MB. Free memory was 114.8MB in the beginning and 95.6MB in the end (delta: 19.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-19 07:33:02,623 INFO L158 Benchmark]: TraceAbstraction took 4482.18ms. Allocated memory was 178.3MB in the beginning and 213.9MB in the end (delta: 35.7MB). Free memory was 95.0MB in the beginning and 132.1MB in the end (delta: -37.0MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 07:33:02,624 INFO L158 Benchmark]: Witness Printer took 5.21ms. Allocated memory is still 213.9MB. Free memory was 132.1MB in the beginning and 131.0MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 07:33:02,626 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.71ms. Allocated memory is still 134.2MB. Free memory is still 80.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 393.64ms. Allocated memory is still 178.3MB. Free memory was 131.6MB in the beginning and 119.6MB in the end (delta: 12.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 77.32ms. Allocated memory is still 178.3MB. Free memory was 119.6MB in the beginning and 116.6MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 67.69ms. Allocated memory is still 178.3MB. Free memory was 116.6MB in the beginning and 114.8MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 648.27ms. Allocated memory is still 178.3MB. Free memory was 114.8MB in the beginning and 95.6MB in the end (delta: 19.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 4482.18ms. Allocated memory was 178.3MB in the beginning and 213.9MB in the end (delta: 35.7MB). Free memory was 95.0MB in the beginning and 132.1MB in the end (delta: -37.0MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 5.21ms. Allocated memory is still 213.9MB. Free memory was 132.1MB in the beginning and 131.0MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet5 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet4 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet6 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet7 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet9 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet8 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet12 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet13 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet14 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet15 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet16 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet17 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet18 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 21]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: overapproximation of bitwiseAnd at line 90. Possible FailurePath: [L26] const SORT_1 mask_SORT_1 = (SORT_1)-1 >> (sizeof(SORT_1) * 8 - 1); [L27] const SORT_1 msb_SORT_1 = (SORT_1)1 << (1 - 1); [L29] const SORT_4 mask_SORT_4 = (SORT_4)-1 >> (sizeof(SORT_4) * 8 - 20); [L30] const SORT_4 msb_SORT_4 = (SORT_4)1 << (20 - 1); [L32] const SORT_8 mask_SORT_8 = (SORT_8)-1 >> (sizeof(SORT_8) * 8 - 32); [L33] const SORT_8 msb_SORT_8 = (SORT_8)1 << (32 - 1); [L35] const SORT_4 var_5 = 1; [L36] const SORT_8 var_10 = 1; [L37] const SORT_8 var_13 = 5; [L38] const SORT_8 var_17 = 7; [L39] const SORT_1 var_22 = 1; [L40] const SORT_4 var_26 = 5; [L41] const SORT_4 var_29 = 7; [L43] SORT_1 input_2; [L44] SORT_1 input_3; [L46] EXPR __VERIFIER_nondet_uint() & mask_SORT_4 VAL [mask_SORT_1=1, mask_SORT_4=1048575, mask_SORT_8=4294967295, msb_SORT_1=1, msb_SORT_4=524288, msb_SORT_8=2147483648, var_10=1, var_13=5, var_17=7, var_22=1, var_26=5, var_29=7, var_5=1] [L46] SORT_4 state_6 = __VERIFIER_nondet_uint() & mask_SORT_4; [L47] EXPR __VERIFIER_nondet_uint() & mask_SORT_4 VAL [mask_SORT_1=1, mask_SORT_4=1048575, mask_SORT_8=4294967295, msb_SORT_1=1, msb_SORT_4=524288, msb_SORT_8=2147483648, state_6=0, var_10=1, var_13=5, var_17=7, var_22=1, var_26=5, var_29=7, var_5=1] [L47] SORT_4 state_27 = __VERIFIER_nondet_uint() & mask_SORT_4; [L48] EXPR __VERIFIER_nondet_uint() & mask_SORT_4 VAL [mask_SORT_1=1, mask_SORT_4=1048575, mask_SORT_8=4294967295, msb_SORT_1=1, msb_SORT_4=524288, msb_SORT_8=2147483648, state_27=0, state_6=0, var_10=1, var_13=5, var_17=7, var_22=1, var_26=5, var_29=7, var_5=1] [L48] SORT_4 state_30 = __VERIFIER_nondet_uint() & mask_SORT_4; [L50] SORT_4 init_7_arg_1 = var_5; [L51] state_6 = init_7_arg_1 [L52] SORT_4 init_28_arg_1 = var_26; [L53] state_27 = init_28_arg_1 [L54] SORT_4 init_31_arg_1 = var_29; [L55] state_30 = init_31_arg_1 VAL [init_28_arg_1=5, init_31_arg_1=7, init_7_arg_1=1, mask_SORT_1=1, mask_SORT_4=1048575, mask_SORT_8=4294967295, msb_SORT_1=1, msb_SORT_4=524288, msb_SORT_8=2147483648, state_27=5, state_30=7, state_6=1, var_10=1, var_13=5, var_17=7, var_22=1, var_26=5, var_29=7, var_5=1] [L58] input_2 = __VERIFIER_nondet_uchar() [L59] input_3 = __VERIFIER_nondet_uchar() [L62] SORT_4 var_9_arg_0 = state_6; VAL [init_28_arg_1=5, init_31_arg_1=7, init_7_arg_1=1, mask_SORT_1=1, mask_SORT_4=1048575, mask_SORT_8=4294967295, msb_SORT_1=1, msb_SORT_4=524288, msb_SORT_8=2147483648, state_27=5, state_30=7, state_6=1, var_10=1, var_13=5, var_17=7, var_22=1, var_26=5, var_29=7, var_5=1, var_9_arg_0=1] [L63] EXPR var_9_arg_0 & mask_SORT_4 VAL [init_28_arg_1=5, init_31_arg_1=7, init_7_arg_1=1, mask_SORT_1=1, mask_SORT_4=1048575, mask_SORT_8=4294967295, msb_SORT_1=1, msb_SORT_4=524288, msb_SORT_8=2147483648, state_27=5, state_30=7, state_6=1, var_10=1, var_13=5, var_17=7, var_22=1, var_26=5, var_29=7, var_5=1, var_9_arg_0=1] [L63] var_9_arg_0 = var_9_arg_0 & mask_SORT_4 [L64] SORT_8 var_9 = var_9_arg_0; [L65] SORT_8 var_11_arg_0 = var_9; [L66] SORT_8 var_11_arg_1 = var_10; [L67] SORT_1 var_11 = var_11_arg_0 == var_11_arg_1; [L68] SORT_4 var_12_arg_0 = state_6; VAL [init_28_arg_1=5, init_31_arg_1=7, init_7_arg_1=1, mask_SORT_1=1, mask_SORT_4=1048575, mask_SORT_8=4294967295, msb_SORT_1=1, msb_SORT_4=524288, msb_SORT_8=2147483648, state_27=5, state_30=7, state_6=1, var_10=1, var_11=0, var_11_arg_0=0, var_11_arg_1=1, var_12_arg_0=1, var_13=5, var_17=7, var_22=1, var_26=5, var_29=7, var_5=1, var_9=0, var_9_arg_0=0] [L69] EXPR var_12_arg_0 & mask_SORT_4 VAL [init_28_arg_1=5, init_31_arg_1=7, init_7_arg_1=1, mask_SORT_1=1, mask_SORT_4=1048575, mask_SORT_8=4294967295, msb_SORT_1=1, msb_SORT_4=524288, msb_SORT_8=2147483648, state_27=5, state_30=7, state_6=1, var_10=1, var_11=0, var_11_arg_0=0, var_11_arg_1=1, var_12_arg_0=1, var_13=5, var_17=7, var_22=1, var_26=5, var_29=7, var_5=1, var_9=0, var_9_arg_0=0] [L69] var_12_arg_0 = var_12_arg_0 & mask_SORT_4 [L70] SORT_8 var_12 = var_12_arg_0; [L71] SORT_8 var_14_arg_0 = var_12; [L72] SORT_8 var_14_arg_1 = var_13; [L73] SORT_1 var_14 = var_14_arg_0 == var_14_arg_1; [L74] SORT_1 var_15_arg_0 = var_11; [L75] SORT_1 var_15_arg_1 = var_14; VAL [init_28_arg_1=5, init_31_arg_1=7, init_7_arg_1=1, mask_SORT_1=1, mask_SORT_4=1048575, mask_SORT_8=4294967295, msb_SORT_1=1, msb_SORT_4=524288, msb_SORT_8=2147483648, state_27=5, state_30=7, state_6=1, var_10=1, var_11=0, var_11_arg_0=0, var_11_arg_1=1, var_12=0, var_12_arg_0=0, var_13=5, var_14=0, var_14_arg_0=0, var_14_arg_1=5, var_15_arg_0=0, var_15_arg_1=0, var_17=7, var_22=1, var_26=5, var_29=7, var_5=1, var_9=0, var_9_arg_0=0] [L76] EXPR var_15_arg_0 | var_15_arg_1 VAL [init_28_arg_1=5, init_31_arg_1=7, init_7_arg_1=1, mask_SORT_1=1, mask_SORT_4=1048575, mask_SORT_8=4294967295, msb_SORT_1=1, msb_SORT_4=524288, msb_SORT_8=2147483648, state_27=5, state_30=7, state_6=1, var_10=1, var_11=0, var_11_arg_0=0, var_11_arg_1=1, var_12=0, var_12_arg_0=0, var_13=5, var_14=0, var_14_arg_0=0, var_14_arg_1=5, var_15_arg_0=0, var_15_arg_1=0, var_17=7, var_22=1, var_26=5, var_29=7, var_5=1, var_9=0, var_9_arg_0=0] [L76] SORT_1 var_15 = var_15_arg_0 | var_15_arg_1; [L77] SORT_4 var_16_arg_0 = state_6; VAL [init_28_arg_1=5, init_31_arg_1=7, init_7_arg_1=1, mask_SORT_1=1, mask_SORT_4=1048575, mask_SORT_8=4294967295, msb_SORT_1=1, msb_SORT_4=524288, msb_SORT_8=2147483648, state_27=5, state_30=7, state_6=1, var_10=1, var_11=0, var_11_arg_0=0, var_11_arg_1=1, var_12=0, var_12_arg_0=0, var_13=5, var_14=0, var_14_arg_0=0, var_14_arg_1=5, var_15=0, var_15_arg_0=0, var_15_arg_1=0, var_16_arg_0=1, var_17=7, var_22=1, var_26=5, var_29=7, var_5=1, var_9=0, var_9_arg_0=0] [L78] EXPR var_16_arg_0 & mask_SORT_4 VAL [init_28_arg_1=5, init_31_arg_1=7, init_7_arg_1=1, mask_SORT_1=1, mask_SORT_4=1048575, mask_SORT_8=4294967295, msb_SORT_1=1, msb_SORT_4=524288, msb_SORT_8=2147483648, state_27=5, state_30=7, state_6=1, var_10=1, var_11=0, var_11_arg_0=0, var_11_arg_1=1, var_12=0, var_12_arg_0=0, var_13=5, var_14=0, var_14_arg_0=0, var_14_arg_1=5, var_15=0, var_15_arg_0=0, var_15_arg_1=0, var_16_arg_0=1, var_17=7, var_22=1, var_26=5, var_29=7, var_5=1, var_9=0, var_9_arg_0=0] [L78] var_16_arg_0 = var_16_arg_0 & mask_SORT_4 [L79] SORT_8 var_16 = var_16_arg_0; [L80] SORT_8 var_18_arg_0 = var_16; [L81] SORT_8 var_18_arg_1 = var_17; [L82] SORT_1 var_18 = var_18_arg_0 == var_18_arg_1; [L83] SORT_1 var_19_arg_0 = var_15; [L84] SORT_1 var_19_arg_1 = var_18; VAL [init_28_arg_1=5, init_31_arg_1=7, init_7_arg_1=1, mask_SORT_1=1, mask_SORT_4=1048575, mask_SORT_8=4294967295, msb_SORT_1=1, msb_SORT_4=524288, msb_SORT_8=2147483648, state_27=5, state_30=7, state_6=1, var_10=1, var_11=0, var_11_arg_0=0, var_11_arg_1=1, var_12=0, var_12_arg_0=0, var_13=5, var_14=0, var_14_arg_0=0, var_14_arg_1=5, var_15=0, var_15_arg_0=0, var_15_arg_1=0, var_16=0, var_16_arg_0=0, var_17=7, var_18=0, var_18_arg_0=0, var_18_arg_1=7, var_19_arg_0=0, var_19_arg_1=0, var_22=1, var_26=5, var_29=7, var_5=1, var_9=0, var_9_arg_0=0] [L85] EXPR var_19_arg_0 | var_19_arg_1 VAL [init_28_arg_1=5, init_31_arg_1=7, init_7_arg_1=1, mask_SORT_1=1, mask_SORT_4=1048575, mask_SORT_8=4294967295, msb_SORT_1=1, msb_SORT_4=524288, msb_SORT_8=2147483648, state_27=5, state_30=7, state_6=1, var_10=1, var_11=0, var_11_arg_0=0, var_11_arg_1=1, var_12=0, var_12_arg_0=0, var_13=5, var_14=0, var_14_arg_0=0, var_14_arg_1=5, var_15=0, var_15_arg_0=0, var_15_arg_1=0, var_16=0, var_16_arg_0=0, var_17=7, var_18=0, var_18_arg_0=0, var_18_arg_1=7, var_19_arg_0=0, var_19_arg_1=0, var_22=1, var_26=5, var_29=7, var_5=1, var_9=0, var_9_arg_0=0] [L85] SORT_1 var_19 = var_19_arg_0 | var_19_arg_1; [L86] SORT_1 var_23_arg_0 = var_19; [L87] SORT_1 var_23 = ~var_23_arg_0; [L88] SORT_1 var_24_arg_0 = var_22; [L89] SORT_1 var_24_arg_1 = var_23; VAL [init_28_arg_1=5, init_31_arg_1=7, init_7_arg_1=1, mask_SORT_1=1, mask_SORT_4=1048575, mask_SORT_8=4294967295, msb_SORT_1=1, msb_SORT_4=524288, msb_SORT_8=2147483648, state_27=5, state_30=7, state_6=1, var_10=1, var_11=0, var_11_arg_0=0, var_11_arg_1=1, var_12=0, var_12_arg_0=0, var_13=5, var_14=0, var_14_arg_0=0, var_14_arg_1=5, var_15=0, var_15_arg_0=0, var_15_arg_1=0, var_16=0, var_16_arg_0=0, var_17=7, var_18=0, var_18_arg_0=0, var_18_arg_1=7, var_19=0, var_19_arg_0=0, var_19_arg_1=0, var_22=1, var_23=255, var_23_arg_0=0, var_24_arg_0=1, var_24_arg_1=255, var_26=5, var_29=7, var_5=1, var_9=0, var_9_arg_0=0] [L90] EXPR var_24_arg_0 & var_24_arg_1 VAL [init_28_arg_1=5, init_31_arg_1=7, init_7_arg_1=1, mask_SORT_1=1, mask_SORT_4=1048575, mask_SORT_8=4294967295, msb_SORT_1=1, msb_SORT_4=524288, msb_SORT_8=2147483648, state_27=5, state_30=7, state_6=1, var_10=1, var_11=0, var_11_arg_0=0, var_11_arg_1=1, var_12=0, var_12_arg_0=0, var_13=5, var_14=0, var_14_arg_0=0, var_14_arg_1=5, var_15=0, var_15_arg_0=0, var_15_arg_1=0, var_16=0, var_16_arg_0=0, var_17=7, var_18=0, var_18_arg_0=0, var_18_arg_1=7, var_19=0, var_19_arg_0=0, var_19_arg_1=0, var_22=1, var_23=255, var_23_arg_0=0, var_24_arg_0=1, var_24_arg_1=255, var_26=5, var_29=7, var_5=1, var_9=0, var_9_arg_0=0] [L90] SORT_1 var_24 = var_24_arg_0 & var_24_arg_1; [L91] EXPR var_24 & mask_SORT_1 VAL [init_28_arg_1=5, init_31_arg_1=7, init_7_arg_1=1, mask_SORT_1=1, mask_SORT_4=1048575, mask_SORT_8=4294967295, msb_SORT_1=1, msb_SORT_4=524288, msb_SORT_8=2147483648, state_27=5, state_30=7, state_6=1, var_10=1, var_11=0, var_11_arg_0=0, var_11_arg_1=1, var_12=0, var_12_arg_0=0, var_13=5, var_14=0, var_14_arg_0=0, var_14_arg_1=5, var_15=0, var_15_arg_0=0, var_15_arg_1=0, var_16=0, var_16_arg_0=0, var_17=7, var_18=0, var_18_arg_0=0, var_18_arg_1=7, var_19=0, var_19_arg_0=0, var_19_arg_1=0, var_22=1, var_23=255, var_23_arg_0=0, var_24=1, var_24_arg_0=1, var_24_arg_1=255, var_26=5, var_29=7, var_5=1, var_9=0, var_9_arg_0=0] [L91] var_24 = var_24 & mask_SORT_1 [L92] SORT_1 bad_25_arg_0 = var_24; [L93] CALL __VERIFIER_assert(!(bad_25_arg_0)) [L21] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L21] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 41 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 4.3s, OverallIterations: 10, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 859 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 859 mSDsluCounter, 1345 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 930 mSDsCounter, 5 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 499 IncrementalHoareTripleChecker+Invalid, 504 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5 mSolverCounterUnsat, 415 mSDtfsCounter, 499 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 71 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=56occurred in iteration=8, InterpolantAutomatonStates: 49, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 142 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 2.2s InterpolantComputationTime, 285 NumberOfCodeBlocks, 285 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 246 ConstructedInterpolants, 0 QuantifiedInterpolants, 946 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 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 [2023-11-19 07:33:02,686 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_156c75a9-873f-4e34-be92-f603188ef106/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_156c75a9-873f-4e34-be92-f603188ef106/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_156c75a9-873f-4e34-be92-f603188ef106/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_156c75a9-873f-4e34-be92-f603188ef106/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_156c75a9-873f-4e34-be92-f603188ef106/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.swap_three.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_156c75a9-873f-4e34-be92-f603188ef106/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_156c75a9-873f-4e34-be92-f603188ef106/bin/uautomizer-verify-uCwYo4JHxu --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash a995c16e34c6a8c947423a8daf73fb5637408e6de846a052a4473f47c82db47d --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:33:05,429 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:33:05,557 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_156c75a9-873f-4e34-be92-f603188ef106/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2023-11-19 07:33:05,566 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:33:05,569 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:33:05,616 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:33:05,617 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:33:05,618 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:33:05,619 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:33:05,624 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:33:05,626 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:33:05,626 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:33:05,627 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:33:05,629 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:33:05,630 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:33:05,630 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:33:05,631 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:33:05,631 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:33:05,632 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:33:05,633 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 07:33:05,634 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-19 07:33:05,634 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-19 07:33:05,635 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:33:05,635 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:33:05,636 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:33:05,636 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:33:05,637 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:33:05,637 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:33:05,638 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:33:05,638 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:33:05,640 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:33:05,640 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-19 07:33:05,640 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-19 07:33:05,641 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:33:05,641 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:33:05,641 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:33:05,642 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:33:05,642 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-19 07:33:05,642 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:33:05,643 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_156c75a9-873f-4e34-be92-f603188ef106/bin/uautomizer-verify-uCwYo4JHxu/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_156c75a9-873f-4e34-be92-f603188ef106/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a995c16e34c6a8c947423a8daf73fb5637408e6de846a052a4473f47c82db47d [2023-11-19 07:33:06,120 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:33:06,157 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:33:06,160 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:33:06,162 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:33:06,163 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:33:06,164 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_156c75a9-873f-4e34-be92-f603188ef106/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.swap_three.c [2023-11-19 07:33:09,376 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:33:09,717 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:33:09,718 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_156c75a9-873f-4e34-be92-f603188ef106/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.swap_three.c [2023-11-19 07:33:09,733 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_156c75a9-873f-4e34-be92-f603188ef106/bin/uautomizer-verify-uCwYo4JHxu/data/9d22ff7a7/fe6bdbe48db04a2bbee21626d53d9097/FLAG469f92de4 [2023-11-19 07:33:09,748 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_156c75a9-873f-4e34-be92-f603188ef106/bin/uautomizer-verify-uCwYo4JHxu/data/9d22ff7a7/fe6bdbe48db04a2bbee21626d53d9097 [2023-11-19 07:33:09,751 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:33:09,752 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:33:09,754 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:33:09,754 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:33:09,763 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:33:09,764 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:33:09" (1/1) ... [2023-11-19 07:33:09,765 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e19a188 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:09, skipping insertion in model container [2023-11-19 07:33:09,765 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:33:09" (1/1) ... [2023-11-19 07:33:09,791 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:33:09,980 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_156c75a9-873f-4e34-be92-f603188ef106/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.swap_three.c[1250,1263] [2023-11-19 07:33:10,027 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:33:10,049 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:33:10,072 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_156c75a9-873f-4e34-be92-f603188ef106/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.swap_three.c[1250,1263] [2023-11-19 07:33:10,121 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:33:10,164 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:33:10,165 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:10 WrapperNode [2023-11-19 07:33:10,165 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:33:10,166 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:33:10,168 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:33:10,168 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:33:10,177 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:10" (1/1) ... [2023-11-19 07:33:10,194 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:10" (1/1) ... [2023-11-19 07:33:10,233 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 95 [2023-11-19 07:33:10,234 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:33:10,235 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:33:10,236 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:33:10,236 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:33:10,246 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:10" (1/1) ... [2023-11-19 07:33:10,247 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:10" (1/1) ... [2023-11-19 07:33:10,265 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:10" (1/1) ... [2023-11-19 07:33:10,266 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:10" (1/1) ... [2023-11-19 07:33:10,272 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:10" (1/1) ... [2023-11-19 07:33:10,284 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:10" (1/1) ... [2023-11-19 07:33:10,289 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:10" (1/1) ... [2023-11-19 07:33:10,291 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:10" (1/1) ... [2023-11-19 07:33:10,294 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:33:10,296 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:33:10,296 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:33:10,296 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:33:10,297 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:10" (1/1) ... [2023-11-19 07:33:10,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:33:10,317 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_156c75a9-873f-4e34-be92-f603188ef106/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:33:10,335 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_156c75a9-873f-4e34-be92-f603188ef106/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:33:10,384 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_156c75a9-873f-4e34-be92-f603188ef106/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:33:10,403 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:33:10,404 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-19 07:33:10,404 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:33:10,405 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:33:10,533 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:33:10,537 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:33:10,776 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:33:10,784 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:33:10,784 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 07:33:10,799 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:33:10 BoogieIcfgContainer [2023-11-19 07:33:10,800 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:33:10,804 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:33:10,805 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:33:10,809 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:33:10,811 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:33:09" (1/3) ... [2023-11-19 07:33:10,812 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@491b887 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:33:10, skipping insertion in model container [2023-11-19 07:33:10,812 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:10" (2/3) ... [2023-11-19 07:33:10,813 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@491b887 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:33:10, skipping insertion in model container [2023-11-19 07:33:10,813 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:33:10" (3/3) ... [2023-11-19 07:33:10,814 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.swap_three.c [2023-11-19 07:33:10,837 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:33:10,837 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 07:33:10,904 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:33:10,914 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@6f75b295, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:33:10,915 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 07:33:10,920 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:33:10,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-19 07:33:10,929 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:33:10,929 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 07:33:10,930 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:33:10,939 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:33:10,939 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2023-11-19 07:33:10,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:33:10,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [170870563] [2023-11-19 07:33:10,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:33:10,958 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 [2023-11-19 07:33:10,959 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_156c75a9-873f-4e34-be92-f603188ef106/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:33:10,965 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_156c75a9-873f-4e34-be92-f603188ef106/bin/uautomizer-verify-uCwYo4JHxu/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) [2023-11-19 07:33:10,984 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_156c75a9-873f-4e34-be92-f603188ef106/bin/uautomizer-verify-uCwYo4JHxu/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 [2023-11-19 07:33:11,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:11,123 INFO L262 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-19 07:33:11,141 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:33:11,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:33:11,518 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:33:11,519 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:33:11,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [170870563] [2023-11-19 07:33:11,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [170870563] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:33:11,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:33:11,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:33:11,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920681342] [2023-11-19 07:33:11,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:33:11,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:33:11,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:33:11,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:33:11,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:33:11,579 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:33:11,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:33:11,655 INFO L93 Difference]: Finished difference Result 19 states and 27 transitions. [2023-11-19 07:33:11,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:33:11,658 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2023-11-19 07:33:11,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:33:11,666 INFO L225 Difference]: With dead ends: 19 [2023-11-19 07:33:11,667 INFO L226 Difference]: Without dead ends: 10 [2023-11-19 07:33:11,670 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:33:11,674 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 [2023-11-19 07:33:11,676 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] [2023-11-19 07:33:11,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2023-11-19 07:33:11,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9. [2023-11-19 07:33:11,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:33:11,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2023-11-19 07:33:11,714 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2023-11-19 07:33:11,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:33:11,714 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2023-11-19 07:33:11,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:33:11,716 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2023-11-19 07:33:11,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-19 07:33:11,716 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:33:11,716 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2023-11-19 07:33:11,728 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_156c75a9-873f-4e34-be92-f603188ef106/bin/uautomizer-verify-uCwYo4JHxu/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)] Forceful destruction successful, exit code 0 [2023-11-19 07:33:11,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_156c75a9-873f-4e34-be92-f603188ef106/bin/uautomizer-verify-uCwYo4JHxu/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 [2023-11-19 07:33:11,918 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:33:11,918 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:33:11,918 INFO L85 PathProgramCache]: Analyzing trace with hash 271073635, now seen corresponding path program 1 times [2023-11-19 07:33:11,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:33:11,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1185810477] [2023-11-19 07:33:11,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:33:11,920 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 [2023-11-19 07:33:11,920 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_156c75a9-873f-4e34-be92-f603188ef106/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:33:11,922 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_156c75a9-873f-4e34-be92-f603188ef106/bin/uautomizer-verify-uCwYo4JHxu/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) [2023-11-19 07:33:11,926 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_156c75a9-873f-4e34-be92-f603188ef106/bin/uautomizer-verify-uCwYo4JHxu/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 [2023-11-19 07:33:12,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:12,067 INFO L262 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-19 07:33:12,076 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:33:12,399 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:33:12,399 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:33:12,788 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:33:12,789 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:33:12,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1185810477] [2023-11-19 07:33:12,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1185810477] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:33:12,790 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:33:12,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-11-19 07:33:12,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358001671] [2023-11-19 07:33:12,795 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 07:33:12,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 07:33:12,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:33:12,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 07:33:12,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:33:12,799 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) [2023-11-19 07:33:12,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:33:12,934 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2023-11-19 07:33:12,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:33:12,935 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 [2023-11-19 07:33:12,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:33:12,936 INFO L225 Difference]: With dead ends: 15 [2023-11-19 07:33:12,936 INFO L226 Difference]: Without dead ends: 13 [2023-11-19 07:33:12,937 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-11-19 07:33:12,940 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 6 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:33:12,941 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 18 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:33:12,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2023-11-19 07:33:12,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2023-11-19 07:33:12,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:33:12,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2023-11-19 07:33:12,953 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 8 [2023-11-19 07:33:12,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:33:12,954 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2023-11-19 07:33:12,955 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) [2023-11-19 07:33:12,955 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2023-11-19 07:33:12,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-19 07:33:12,956 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:33:12,956 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-11-19 07:33:12,959 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_156c75a9-873f-4e34-be92-f603188ef106/bin/uautomizer-verify-uCwYo4JHxu/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 [2023-11-19 07:33:13,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_156c75a9-873f-4e34-be92-f603188ef106/bin/uautomizer-verify-uCwYo4JHxu/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 [2023-11-19 07:33:13,159 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:33:13,160 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:33:13,160 INFO L85 PathProgramCache]: Analyzing trace with hash 1020920393, now seen corresponding path program 2 times [2023-11-19 07:33:13,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:33:13,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1314169976] [2023-11-19 07:33:13,161 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 07:33:13,161 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 [2023-11-19 07:33:13,162 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_156c75a9-873f-4e34-be92-f603188ef106/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:33:13,165 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_156c75a9-873f-4e34-be92-f603188ef106/bin/uautomizer-verify-uCwYo4JHxu/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) [2023-11-19 07:33:13,168 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_156c75a9-873f-4e34-be92-f603188ef106/bin/uautomizer-verify-uCwYo4JHxu/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 [2023-11-19 07:33:13,307 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-19 07:33:13,307 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:33:13,312 INFO L262 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-19 07:33:13,315 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:33:13,591 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:33:13,591 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:33:14,029 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:33:14,030 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:33:14,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1314169976] [2023-11-19 07:33:14,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1314169976] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:33:14,031 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:33:14,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-11-19 07:33:14,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259412447] [2023-11-19 07:33:14,031 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 07:33:14,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-19 07:33:14,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:33:14,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-19 07:33:14,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-11-19 07:33:14,034 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand has 10 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:33:14,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:33:14,248 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2023-11-19 07:33:14,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 07:33:14,249 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 0 states have call successors, (0), 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 11 [2023-11-19 07:33:14,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:33:14,250 INFO L225 Difference]: With dead ends: 22 [2023-11-19 07:33:14,251 INFO L226 Difference]: Without dead ends: 20 [2023-11-19 07:33:14,251 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2023-11-19 07:33:14,253 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 8 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:33:14,253 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 42 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:33:14,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2023-11-19 07:33:14,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 18. [2023-11-19 07:33:14,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 17 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:33:14,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2023-11-19 07:33:14,260 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 11 [2023-11-19 07:33:14,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:33:14,261 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2023-11-19 07:33:14,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:33:14,261 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2023-11-19 07:33:14,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-19 07:33:14,262 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:33:14,262 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1] [2023-11-19 07:33:14,272 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_156c75a9-873f-4e34-be92-f603188ef106/bin/uautomizer-verify-uCwYo4JHxu/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)] Forceful destruction successful, exit code 0 [2023-11-19 07:33:14,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_156c75a9-873f-4e34-be92-f603188ef106/bin/uautomizer-verify-uCwYo4JHxu/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 [2023-11-19 07:33:14,466 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:33:14,466 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:33:14,466 INFO L85 PathProgramCache]: Analyzing trace with hash 1580781475, now seen corresponding path program 3 times [2023-11-19 07:33:14,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:33:14,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [866020875] [2023-11-19 07:33:14,467 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-19 07:33:14,467 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 [2023-11-19 07:33:14,468 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_156c75a9-873f-4e34-be92-f603188ef106/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:33:14,469 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_156c75a9-873f-4e34-be92-f603188ef106/bin/uautomizer-verify-uCwYo4JHxu/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) [2023-11-19 07:33:14,475 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_156c75a9-873f-4e34-be92-f603188ef106/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-11-19 07:33:14,588 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-11-19 07:33:14,588 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:33:14,593 INFO L262 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 29 conjunts are in the unsatisfiable core [2023-11-19 07:33:14,596 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:33:14,871 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 07:33:14,871 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:33:15,340 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 07:33:15,340 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:33:15,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [866020875] [2023-11-19 07:33:15,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [866020875] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:33:15,341 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:33:15,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-11-19 07:33:15,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451997301] [2023-11-19 07:33:15,342 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 07:33:15,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-19 07:33:15,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:33:15,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-19 07:33:15,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-11-19 07:33:15,344 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:33:15,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:33:15,510 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2023-11-19 07:33:15,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 07:33:15,511 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2023-11-19 07:33:15,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:33:15,512 INFO L225 Difference]: With dead ends: 20 [2023-11-19 07:33:15,512 INFO L226 Difference]: Without dead ends: 18 [2023-11-19 07:33:15,512 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2023-11-19 07:33:15,514 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 6 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:33:15,514 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 25 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:33:15,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2023-11-19 07:33:15,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2023-11-19 07:33:15,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.0588235294117647) internal successors, (18), 17 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:33:15,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2023-11-19 07:33:15,521 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 14 [2023-11-19 07:33:15,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:33:15,521 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2023-11-19 07:33:15,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:33:15,522 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2023-11-19 07:33:15,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-19 07:33:15,522 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:33:15,523 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1] [2023-11-19 07:33:15,528 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_156c75a9-873f-4e34-be92-f603188ef106/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2023-11-19 07:33:15,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_156c75a9-873f-4e34-be92-f603188ef106/bin/uautomizer-verify-uCwYo4JHxu/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 [2023-11-19 07:33:15,726 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:33:15,727 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:33:15,727 INFO L85 PathProgramCache]: Analyzing trace with hash -1250702327, now seen corresponding path program 4 times [2023-11-19 07:33:15,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:33:15,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1665002696] [2023-11-19 07:33:15,727 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-19 07:33:15,728 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 [2023-11-19 07:33:15,728 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_156c75a9-873f-4e34-be92-f603188ef106/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:33:15,731 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_156c75a9-873f-4e34-be92-f603188ef106/bin/uautomizer-verify-uCwYo4JHxu/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) [2023-11-19 07:33:15,736 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_156c75a9-873f-4e34-be92-f603188ef106/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-11-19 07:33:15,880 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-19 07:33:15,881 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:33:15,888 INFO L262 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 31 conjunts are in the unsatisfiable core [2023-11-19 07:33:15,891 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:33:16,182 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-19 07:33:16,183 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:33:16,766 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-19 07:33:16,767 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:33:16,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1665002696] [2023-11-19 07:33:16,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1665002696] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:33:16,767 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:33:16,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-11-19 07:33:16,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104724333] [2023-11-19 07:33:16,768 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 07:33:16,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-19 07:33:16,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:33:16,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-19 07:33:16,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-11-19 07:33:16,770 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:33:16,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:33:16,950 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2023-11-19 07:33:16,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 07:33:16,954 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2023-11-19 07:33:16,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:33:16,954 INFO L225 Difference]: With dead ends: 18 [2023-11-19 07:33:16,954 INFO L226 Difference]: Without dead ends: 0 [2023-11-19 07:33:16,955 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2023-11-19 07:33:16,956 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 1 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:33:16,956 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 20 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:33:16,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-19 07:33:16,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-19 07:33:16,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:33:16,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-19 07:33:16,958 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2023-11-19 07:33:16,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:33:16,958 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-19 07:33:16,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:33:16,958 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-19 07:33:16,958 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-19 07:33:16,965 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-19 07:33:16,978 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_156c75a9-873f-4e34-be92-f603188ef106/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2023-11-19 07:33:17,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_156c75a9-873f-4e34-be92-f603188ef106/bin/uautomizer-verify-uCwYo4JHxu/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 [2023-11-19 07:33:17,172 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-11-19 07:33:17,251 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-11-19 07:33:17,252 INFO L895 garLoopResultBuilder]: At program point L56-2(lines 56 102) the Hoare annotation is: (let ((.cse0 (= (_ bv1 8) |ULTIMATE.start_main_~mask_SORT_1~0#1|)) (.cse1 (= |ULTIMATE.start_main_~var_13~0#1| (_ bv5 32))) (.cse2 (= (_ bv1048575 32) |ULTIMATE.start_main_~mask_SORT_4~0#1|)) (.cse3 (= (_ bv7 32) |ULTIMATE.start_main_~var_17~0#1|)) (.cse4 (= |ULTIMATE.start_main_~var_10~0#1| (_ bv1 32)))) (or (and .cse0 .cse1 (= (_ bv5 32) |ULTIMATE.start_main_~state_27~0#1|) (= (_ bv7 32) |ULTIMATE.start_main_~state_30~0#1|) .cse2 .cse3 (= |ULTIMATE.start_main_~state_6~0#1| (_ bv1 32)) .cse4) (and .cse0 .cse1 (= |ULTIMATE.start_main_~state_6~0#1| (_ bv7 32)) (= (_ bv5 32) |ULTIMATE.start_main_~state_30~0#1|) (= (_ bv1 32) |ULTIMATE.start_main_~state_27~0#1|) .cse2 .cse3 .cse4) (and .cse0 (= |ULTIMATE.start_main_~state_6~0#1| (_ bv5 32)) .cse1 .cse2 .cse3 (= (_ bv7 32) |ULTIMATE.start_main_~state_27~0#1|) (= (_ bv1 32) |ULTIMATE.start_main_~state_30~0#1|) .cse4))) [2023-11-19 07:33:17,252 INFO L899 garLoopResultBuilder]: For program point L21(line 21) no Hoare annotation was computed. [2023-11-19 07:33:17,252 INFO L899 garLoopResultBuilder]: For program point L56-3(lines 56 102) no Hoare annotation was computed. [2023-11-19 07:33:17,252 INFO L899 garLoopResultBuilder]: For program point L21-1(line 21) no Hoare annotation was computed. [2023-11-19 07:33:17,253 INFO L899 garLoopResultBuilder]: For program point L21-3(line 21) no Hoare annotation was computed. [2023-11-19 07:33:17,253 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-11-19 07:33:17,253 INFO L899 garLoopResultBuilder]: For program point main_returnLabel#1(lines 23 104) no Hoare annotation was computed. [2023-11-19 07:33:17,253 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2023-11-19 07:33:17,253 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2023-11-19 07:33:17,253 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 21) no Hoare annotation was computed. [2023-11-19 07:33:17,256 INFO L445 BasicCegarLoop]: Path program histogram: [4, 1] [2023-11-19 07:33:17,258 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-19 07:33:17,273 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 07:33:17 BoogieIcfgContainer [2023-11-19 07:33:17,273 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-19 07:33:17,274 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 07:33:17,274 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 07:33:17,275 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 07:33:17,275 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:33:10" (3/4) ... [2023-11-19 07:33:17,277 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-19 07:33:17,287 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2023-11-19 07:33:17,287 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-11-19 07:33:17,288 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-19 07:33:17,288 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-19 07:33:17,385 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_156c75a9-873f-4e34-be92-f603188ef106/bin/uautomizer-verify-uCwYo4JHxu/witness.graphml [2023-11-19 07:33:17,385 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_156c75a9-873f-4e34-be92-f603188ef106/bin/uautomizer-verify-uCwYo4JHxu/witness.yml [2023-11-19 07:33:17,386 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 07:33:17,387 INFO L158 Benchmark]: Toolchain (without parser) took 7634.10ms. Allocated memory was 121.6MB in the beginning and 176.2MB in the end (delta: 54.5MB). Free memory was 97.5MB in the beginning and 84.6MB in the end (delta: 12.9MB). Peak memory consumption was 68.6MB. Max. memory is 16.1GB. [2023-11-19 07:33:17,387 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 79.7MB. Free memory was 56.6MB in the beginning and 56.5MB in the end (delta: 95.3kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 07:33:17,387 INFO L158 Benchmark]: CACSL2BoogieTranslator took 411.58ms. Allocated memory is still 121.6MB. Free memory was 97.2MB in the beginning and 85.2MB in the end (delta: 12.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-19 07:33:17,388 INFO L158 Benchmark]: Boogie Procedure Inliner took 67.60ms. Allocated memory is still 121.6MB. Free memory was 84.9MB in the beginning and 83.2MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 07:33:17,388 INFO L158 Benchmark]: Boogie Preprocessor took 59.52ms. Allocated memory is still 121.6MB. Free memory was 83.2MB in the beginning and 81.9MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 07:33:17,389 INFO L158 Benchmark]: RCFGBuilder took 504.75ms. Allocated memory is still 121.6MB. Free memory was 81.9MB in the beginning and 100.0MB in the end (delta: -18.1MB). Peak memory consumption was 19.1MB. Max. memory is 16.1GB. [2023-11-19 07:33:17,389 INFO L158 Benchmark]: TraceAbstraction took 6469.26ms. Allocated memory was 121.6MB in the beginning and 176.2MB in the end (delta: 54.5MB). Free memory was 99.6MB in the beginning and 89.9MB in the end (delta: 9.7MB). Peak memory consumption was 64.2MB. Max. memory is 16.1GB. [2023-11-19 07:33:17,390 INFO L158 Benchmark]: Witness Printer took 111.85ms. Allocated memory is still 176.2MB. Free memory was 89.9MB in the beginning and 84.6MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-19 07:33:17,392 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 79.7MB. Free memory was 56.6MB in the beginning and 56.5MB in the end (delta: 95.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 411.58ms. Allocated memory is still 121.6MB. Free memory was 97.2MB in the beginning and 85.2MB in the end (delta: 12.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 67.60ms. Allocated memory is still 121.6MB. Free memory was 84.9MB in the beginning and 83.2MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 59.52ms. Allocated memory is still 121.6MB. Free memory was 83.2MB in the beginning and 81.9MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 504.75ms. Allocated memory is still 121.6MB. Free memory was 81.9MB in the beginning and 100.0MB in the end (delta: -18.1MB). Peak memory consumption was 19.1MB. Max. memory is 16.1GB. * TraceAbstraction took 6469.26ms. Allocated memory was 121.6MB in the beginning and 176.2MB in the end (delta: 54.5MB). Free memory was 99.6MB in the beginning and 89.9MB in the end (delta: 9.7MB). Peak memory consumption was 64.2MB. Max. memory is 16.1GB. * Witness Printer took 111.85ms. Allocated memory is still 176.2MB. Free memory was 89.9MB in the beginning and 84.6MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 21]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 6.4s, OverallIterations: 5, TraceHistogramMax: 5, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 24 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 24 mSDsluCounter, 116 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 89 mSDsCounter, 9 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 159 IncrementalHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 9 mSolverCounterUnsat, 27 mSDtfsCounter, 159 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 108 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=3, InterpolantAutomatonStates: 35, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 4 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 1 LocationsWithAnnotation, 1 PreInvPairs, 4 NumberOfFragments, 76 HoareAnnotationTreeSize, 1 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 1 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 3.5s InterpolantComputationTime, 55 NumberOfCodeBlocks, 55 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 96 ConstructedInterpolants, 34 QuantifiedInterpolants, 2678 SizeOfPredicates, 127 NumberOfNonLiveVariables, 670 ConjunctsInSsa, 133 ConjunctsInUnsatCore, 9 InterpolantComputations, 1 PerfectInterpolantSequences, 10/100 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 56]: Loop Invariant Derived loop invariant: ((((((((((1 == mask_SORT_1) && (var_13 == 5)) && (5 == state_27)) && (7 == state_30)) && (1048575 == mask_SORT_4)) && (7 == var_17)) && (state_6 == 1)) && (var_10 == 1)) || ((((((((1 == mask_SORT_1) && (var_13 == 5)) && (state_6 == 7)) && (5 == state_30)) && (1 == state_27)) && (1048575 == mask_SORT_4)) && (7 == var_17)) && (var_10 == 1))) || ((((((((1 == mask_SORT_1) && (state_6 == 5)) && (var_13 == 5)) && (1048575 == mask_SORT_4)) && (7 == var_17)) && (7 == state_27)) && (1 == state_30)) && (var_10 == 1))) RESULT: Ultimate proved your program to be correct! [2023-11-19 07:33:17,426 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_156c75a9-873f-4e34-be92-f603188ef106/bin/uautomizer-verify-uCwYo4JHxu/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 Writing output log to file Ultimate.log Result: TRUE