./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/recursive-simple/sum_10x0-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e875a28-644a-4827-aea1-2323cb168560/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e875a28-644a-4827-aea1-2323cb168560/bin/uautomizer-verify-qhAvR1uOyd/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e875a28-644a-4827-aea1-2323cb168560/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e875a28-644a-4827-aea1-2323cb168560/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursive-simple/sum_10x0-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e875a28-644a-4827-aea1-2323cb168560/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e875a28-644a-4827-aea1-2323cb168560/bin/uautomizer-verify-qhAvR1uOyd --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 68d0cd7d514b491e1404560081afc21267eb1b3dae98cdb9832a8634357d65e4 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 13:23:36,844 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 13:23:36,940 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e875a28-644a-4827-aea1-2323cb168560/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-13 13:23:36,947 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 13:23:36,947 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 13:23:36,980 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 13:23:36,981 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 13:23:36,981 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 13:23:36,982 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 13:23:36,982 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 13:23:36,983 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 13:23:36,983 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 13:23:36,983 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 13:23:36,983 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 13:23:36,983 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 13:23:36,984 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 13:23:36,985 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-13 13:23:36,985 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 13:23:36,985 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 13:23:36,985 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 13:23:36,985 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 13:23:36,985 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-13 13:23:36,985 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 13:23:36,986 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-13 13:23:36,986 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 13:23:36,986 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 13:23:36,986 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-13 13:23:36,986 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 13:23:36,986 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 13:23:36,986 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 13:23:36,986 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 13:23:36,986 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 13:23:36,986 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 13:23:36,987 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 13:23:36,987 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 13:23:36,987 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-13 13:23:36,987 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-13 13:23:36,987 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 13:23:36,987 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 13:23:36,987 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 13:23:36,987 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 13:23:36,987 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 13:23:36,987 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_9e875a28-644a-4827-aea1-2323cb168560/bin/uautomizer-verify-qhAvR1uOyd Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 68d0cd7d514b491e1404560081afc21267eb1b3dae98cdb9832a8634357d65e4 [2024-11-13 13:23:37,276 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 13:23:37,290 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 13:23:37,293 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 13:23:37,295 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 13:23:37,295 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 13:23:37,296 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e875a28-644a-4827-aea1-2323cb168560/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/recursive-simple/sum_10x0-1.c Unable to find full path for "g++" [2024-11-13 13:23:39,193 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 13:23:39,443 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 13:23:39,445 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e875a28-644a-4827-aea1-2323cb168560/sv-benchmarks/c/recursive-simple/sum_10x0-1.c [2024-11-13 13:23:39,453 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e875a28-644a-4827-aea1-2323cb168560/bin/uautomizer-verify-qhAvR1uOyd/data/78928461a/3a329cdbdea34417b0e0ce8bc04123fc/FLAGee8732ff6 [2024-11-13 13:23:39,497 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e875a28-644a-4827-aea1-2323cb168560/bin/uautomizer-verify-qhAvR1uOyd/data/78928461a/3a329cdbdea34417b0e0ce8bc04123fc [2024-11-13 13:23:39,499 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 13:23:39,502 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 13:23:39,505 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 13:23:39,505 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 13:23:39,510 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 13:23:39,511 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:23:39" (1/1) ... [2024-11-13 13:23:39,512 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77416a3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:23:39, skipping insertion in model container [2024-11-13 13:23:39,513 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:23:39" (1/1) ... [2024-11-13 13:23:39,529 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 13:23:39,752 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e875a28-644a-4827-aea1-2323cb168560/sv-benchmarks/c/recursive-simple/sum_10x0-1.c[481,494] [2024-11-13 13:23:39,755 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 13:23:39,771 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 13:23:39,786 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e875a28-644a-4827-aea1-2323cb168560/sv-benchmarks/c/recursive-simple/sum_10x0-1.c[481,494] [2024-11-13 13:23:39,788 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 13:23:39,806 INFO L204 MainTranslator]: Completed translation [2024-11-13 13:23:39,806 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:23:39 WrapperNode [2024-11-13 13:23:39,808 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 13:23:39,810 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 13:23:39,810 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 13:23:39,810 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 13:23:39,819 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:23:39" (1/1) ... [2024-11-13 13:23:39,826 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:23:39" (1/1) ... [2024-11-13 13:23:39,850 INFO L138 Inliner]: procedures = 12, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 19 [2024-11-13 13:23:39,851 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 13:23:39,852 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 13:23:39,854 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 13:23:39,855 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 13:23:39,865 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:23:39" (1/1) ... [2024-11-13 13:23:39,865 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:23:39" (1/1) ... [2024-11-13 13:23:39,866 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:23:39" (1/1) ... [2024-11-13 13:23:39,879 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-13 13:23:39,880 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:23:39" (1/1) ... [2024-11-13 13:23:39,880 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:23:39" (1/1) ... [2024-11-13 13:23:39,888 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:23:39" (1/1) ... [2024-11-13 13:23:39,890 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:23:39" (1/1) ... [2024-11-13 13:23:39,894 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:23:39" (1/1) ... [2024-11-13 13:23:39,894 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:23:39" (1/1) ... [2024-11-13 13:23:39,896 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 13:23:39,898 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 13:23:39,899 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 13:23:39,899 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 13:23:39,900 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:23:39" (1/1) ... [2024-11-13 13:23:39,911 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 13:23:39,928 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e875a28-644a-4827-aea1-2323cb168560/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:23:39,947 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e875a28-644a-4827-aea1-2323cb168560/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 13:23:39,952 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e875a28-644a-4827-aea1-2323cb168560/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 13:23:39,984 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 13:23:39,985 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 13:23:39,985 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 13:23:39,985 INFO L130 BoogieDeclarations]: Found specification of procedure sum [2024-11-13 13:23:39,985 INFO L138 BoogieDeclarations]: Found implementation of procedure sum [2024-11-13 13:23:39,985 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-13 13:23:40,052 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 13:23:40,054 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 13:23:40,155 INFO L? ?]: Removed 10 outVars from TransFormulas that were not future-live. [2024-11-13 13:23:40,155 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 13:23:40,168 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 13:23:40,169 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-13 13:23:40,169 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:23:40 BoogieIcfgContainer [2024-11-13 13:23:40,170 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 13:23:40,172 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 13:23:40,173 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 13:23:40,178 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 13:23:40,178 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 01:23:39" (1/3) ... [2024-11-13 13:23:40,179 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@501a0b77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 01:23:40, skipping insertion in model container [2024-11-13 13:23:40,179 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:23:39" (2/3) ... [2024-11-13 13:23:40,179 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@501a0b77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 01:23:40, skipping insertion in model container [2024-11-13 13:23:40,180 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:23:40" (3/3) ... [2024-11-13 13:23:40,181 INFO L112 eAbstractionObserver]: Analyzing ICFG sum_10x0-1.c [2024-11-13 13:23:40,199 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 13:23:40,201 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG sum_10x0-1.c that has 2 procedures, 16 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2024-11-13 13:23:40,269 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 13:23:40,285 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@178515fd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 13:23:40,285 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-13 13:23:40,291 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 13:23:40,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-13 13:23:40,300 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:23:40,301 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:23:40,301 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:23:40,307 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:23:40,308 INFO L85 PathProgramCache]: Analyzing trace with hash -358017204, now seen corresponding path program 1 times [2024-11-13 13:23:40,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:23:40,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215155060] [2024-11-13 13:23:40,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:23:40,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:23:40,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:23:40,518 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 13:23:40,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:23:40,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:23:40,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:23:40,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215155060] [2024-11-13 13:23:40,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1215155060] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:23:40,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:23:40,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 13:23:40,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26063198] [2024-11-13 13:23:40,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:23:40,663 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 13:23:40,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:23:40,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 13:23:40,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 13:23:40,690 INFO L87 Difference]: Start difference. First operand has 16 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 13:23:40,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:23:40,798 INFO L93 Difference]: Finished difference Result 25 states and 28 transitions. [2024-11-13 13:23:40,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 13:23:40,801 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2024-11-13 13:23:40,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:23:40,808 INFO L225 Difference]: With dead ends: 25 [2024-11-13 13:23:40,808 INFO L226 Difference]: Without dead ends: 15 [2024-11-13 13:23:40,812 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 13:23:40,817 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 4 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 13:23:40,817 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 35 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 13:23:40,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2024-11-13 13:23:40,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2024-11-13 13:23:40,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 10 states have (on average 1.1) internal successors, (11), 11 states have internal predecessors, (11), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-13 13:23:40,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2024-11-13 13:23:40,865 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 10 [2024-11-13 13:23:40,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:23:40,865 INFO L471 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2024-11-13 13:23:40,865 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 13:23:40,865 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2024-11-13 13:23:40,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-13 13:23:40,869 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:23:40,869 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:23:40,869 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-13 13:23:40,869 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:23:40,870 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:23:40,870 INFO L85 PathProgramCache]: Analyzing trace with hash 679465686, now seen corresponding path program 1 times [2024-11-13 13:23:40,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:23:40,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492100989] [2024-11-13 13:23:40,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:23:40,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:23:40,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:23:41,036 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 13:23:41,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:23:41,203 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 13:23:41,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:23:41,249 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 13:23:41,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:23:41,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492100989] [2024-11-13 13:23:41,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492100989] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:23:41,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [894346098] [2024-11-13 13:23:41,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:23:41,250 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:23:41,250 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e875a28-644a-4827-aea1-2323cb168560/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:23:41,253 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e875a28-644a-4827-aea1-2323cb168560/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:23:41,256 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e875a28-644a-4827-aea1-2323cb168560/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 13:23:41,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:23:41,328 INFO L255 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-13 13:23:41,333 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:23:41,448 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 13:23:41,449 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:23:41,759 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 13:23:41,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [894346098] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:23:41,759 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:23:41,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 7] total 10 [2024-11-13 13:23:41,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35008657] [2024-11-13 13:23:41,760 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:23:41,761 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-13 13:23:41,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:23:41,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-13 13:23:41,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-13 13:23:41,763 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand has 10 states, 8 states have (on average 2.375) internal successors, (19), 10 states have internal predecessors, (19), 5 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-13 13:23:41,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:23:41,834 INFO L93 Difference]: Finished difference Result 22 states and 23 transitions. [2024-11-13 13:23:41,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 13:23:41,835 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 2.375) internal successors, (19), 10 states have internal predecessors, (19), 5 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 5 states have call successors, (5) Word has length 16 [2024-11-13 13:23:41,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:23:41,836 INFO L225 Difference]: With dead ends: 22 [2024-11-13 13:23:41,836 INFO L226 Difference]: Without dead ends: 18 [2024-11-13 13:23:41,836 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 29 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2024-11-13 13:23:41,837 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 11 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 13:23:41,837 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 37 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 13:23:41,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2024-11-13 13:23:41,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2024-11-13 13:23:41,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 12 states have (on average 1.0833333333333333) internal successors, (13), 13 states have internal predecessors, (13), 2 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-13 13:23:41,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2024-11-13 13:23:41,847 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 16 [2024-11-13 13:23:41,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:23:41,848 INFO L471 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2024-11-13 13:23:41,848 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 2.375) internal successors, (19), 10 states have internal predecessors, (19), 5 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-13 13:23:41,848 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2024-11-13 13:23:41,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-13 13:23:41,850 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:23:41,850 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:23:41,871 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e875a28-644a-4827-aea1-2323cb168560/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-13 13:23:42,055 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e875a28-644a-4827-aea1-2323cb168560/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:23:42,056 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:23:42,056 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:23:42,056 INFO L85 PathProgramCache]: Analyzing trace with hash -41010676, now seen corresponding path program 2 times [2024-11-13 13:23:42,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:23:42,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645163708] [2024-11-13 13:23:42,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:23:42,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:23:42,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:23:42,144 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 13:23:42,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:23:42,293 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 13:23:42,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:23:42,371 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 13:23:42,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:23:42,416 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-13 13:23:42,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:23:42,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645163708] [2024-11-13 13:23:42,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645163708] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:23:42,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [54878191] [2024-11-13 13:23:42,418 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 13:23:42,418 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:23:42,418 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e875a28-644a-4827-aea1-2323cb168560/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:23:42,421 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e875a28-644a-4827-aea1-2323cb168560/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:23:42,423 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e875a28-644a-4827-aea1-2323cb168560/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-13 13:23:42,491 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 13:23:42,492 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 13:23:42,493 INFO L255 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-13 13:23:42,494 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:23:42,573 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-13 13:23:42,573 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:23:43,046 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-13 13:23:43,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [54878191] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:23:43,046 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:23:43,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 9] total 12 [2024-11-13 13:23:43,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879547434] [2024-11-13 13:23:43,047 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:23:43,047 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-13 13:23:43,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:23:43,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-13 13:23:43,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-11-13 13:23:43,048 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand has 12 states, 10 states have (on average 2.3) internal successors, (23), 12 states have internal predecessors, (23), 6 states have call successors, (6), 1 states have call predecessors, (6), 3 states have return successors, (8), 3 states have call predecessors, (8), 6 states have call successors, (8) [2024-11-13 13:23:43,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:23:43,116 INFO L93 Difference]: Finished difference Result 25 states and 26 transitions. [2024-11-13 13:23:43,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 13:23:43,116 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 2.3) internal successors, (23), 12 states have internal predecessors, (23), 6 states have call successors, (6), 1 states have call predecessors, (6), 3 states have return successors, (8), 3 states have call predecessors, (8), 6 states have call successors, (8) Word has length 22 [2024-11-13 13:23:43,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:23:43,117 INFO L225 Difference]: With dead ends: 25 [2024-11-13 13:23:43,117 INFO L226 Difference]: Without dead ends: 21 [2024-11-13 13:23:43,117 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 41 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2024-11-13 13:23:43,118 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 14 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 13:23:43,118 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 44 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 13:23:43,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2024-11-13 13:23:43,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2024-11-13 13:23:43,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 14 states have (on average 1.0714285714285714) internal successors, (15), 15 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-13 13:23:43,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2024-11-13 13:23:43,123 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 22 [2024-11-13 13:23:43,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:23:43,123 INFO L471 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2024-11-13 13:23:43,124 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 2.3) internal successors, (23), 12 states have internal predecessors, (23), 6 states have call successors, (6), 1 states have call predecessors, (6), 3 states have return successors, (8), 3 states have call predecessors, (8), 6 states have call successors, (8) [2024-11-13 13:23:43,124 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2024-11-13 13:23:43,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-13 13:23:43,124 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:23:43,124 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:23:43,147 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e875a28-644a-4827-aea1-2323cb168560/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-13 13:23:43,328 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e875a28-644a-4827-aea1-2323cb168560/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:23:43,328 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:23:43,329 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:23:43,329 INFO L85 PathProgramCache]: Analyzing trace with hash 1769866774, now seen corresponding path program 3 times [2024-11-13 13:23:43,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:23:43,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219315818] [2024-11-13 13:23:43,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:23:43,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:23:43,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:23:43,397 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 13:23:43,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:23:43,499 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 13:23:43,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:23:43,570 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 13:23:43,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:23:43,607 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 13:23:43,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:23:43,650 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-13 13:23:43,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:23:43,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219315818] [2024-11-13 13:23:43,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219315818] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:23:43,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [874336249] [2024-11-13 13:23:43,650 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 13:23:43,650 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:23:43,650 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e875a28-644a-4827-aea1-2323cb168560/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:23:43,654 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e875a28-644a-4827-aea1-2323cb168560/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:23:43,660 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e875a28-644a-4827-aea1-2323cb168560/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-13 13:23:43,717 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-13 13:23:43,717 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 13:23:43,718 INFO L255 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-13 13:23:43,720 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:23:43,776 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-13 13:23:43,776 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:23:44,429 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-13 13:23:44,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [874336249] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:23:44,429 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:23:44,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 11] total 14 [2024-11-13 13:23:44,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614879224] [2024-11-13 13:23:44,430 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:23:44,430 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-13 13:23:44,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:23:44,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-13 13:23:44,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2024-11-13 13:23:44,434 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand has 14 states, 12 states have (on average 2.25) internal successors, (27), 14 states have internal predecessors, (27), 7 states have call successors, (7), 1 states have call predecessors, (7), 4 states have return successors, (11), 4 states have call predecessors, (11), 7 states have call successors, (11) [2024-11-13 13:23:44,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:23:44,541 INFO L93 Difference]: Finished difference Result 28 states and 29 transitions. [2024-11-13 13:23:44,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-13 13:23:44,542 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 2.25) internal successors, (27), 14 states have internal predecessors, (27), 7 states have call successors, (7), 1 states have call predecessors, (7), 4 states have return successors, (11), 4 states have call predecessors, (11), 7 states have call successors, (11) Word has length 28 [2024-11-13 13:23:44,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:23:44,543 INFO L225 Difference]: With dead ends: 28 [2024-11-13 13:23:44,543 INFO L226 Difference]: Without dead ends: 24 [2024-11-13 13:23:44,543 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 53 SyntacticMatches, 4 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=188, Unknown=0, NotChecked=0, Total=272 [2024-11-13 13:23:44,544 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 16 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 13:23:44,544 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 51 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 13:23:44,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2024-11-13 13:23:44,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2024-11-13 13:23:44,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 16 states have (on average 1.0625) internal successors, (17), 17 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 5 states have return successors, (6), 5 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-13 13:23:44,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2024-11-13 13:23:44,549 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 28 [2024-11-13 13:23:44,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:23:44,549 INFO L471 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2024-11-13 13:23:44,550 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 2.25) internal successors, (27), 14 states have internal predecessors, (27), 7 states have call successors, (7), 1 states have call predecessors, (7), 4 states have return successors, (11), 4 states have call predecessors, (11), 7 states have call successors, (11) [2024-11-13 13:23:44,550 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2024-11-13 13:23:44,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-11-13 13:23:44,551 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:23:44,551 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:23:44,571 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e875a28-644a-4827-aea1-2323cb168560/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-13 13:23:44,751 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e875a28-644a-4827-aea1-2323cb168560/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:23:44,752 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:23:44,752 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:23:44,752 INFO L85 PathProgramCache]: Analyzing trace with hash 371264716, now seen corresponding path program 4 times [2024-11-13 13:23:44,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:23:44,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50842206] [2024-11-13 13:23:44,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:23:44,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:23:44,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:23:44,843 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 13:23:44,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:23:44,958 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 13:23:44,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:23:45,012 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 13:23:45,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:23:45,050 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 13:23:45,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:23:45,081 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 13:23:45,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:23:45,104 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-13 13:23:45,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:23:45,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50842206] [2024-11-13 13:23:45,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50842206] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:23:45,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1067160353] [2024-11-13 13:23:45,105 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-13 13:23:45,105 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:23:45,105 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e875a28-644a-4827-aea1-2323cb168560/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:23:45,107 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e875a28-644a-4827-aea1-2323cb168560/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:23:45,109 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e875a28-644a-4827-aea1-2323cb168560/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-13 13:23:45,167 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-13 13:23:45,167 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 13:23:45,168 INFO L255 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-13 13:23:45,170 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:23:45,242 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-13 13:23:45,242 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:23:46,227 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-13 13:23:46,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1067160353] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:23:46,227 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:23:46,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 13] total 16 [2024-11-13 13:23:46,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112462903] [2024-11-13 13:23:46,227 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:23:46,228 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-13 13:23:46,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:23:46,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-13 13:23:46,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2024-11-13 13:23:46,229 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand has 16 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 16 states have internal predecessors, (31), 8 states have call successors, (8), 1 states have call predecessors, (8), 5 states have return successors, (14), 5 states have call predecessors, (14), 8 states have call successors, (14) [2024-11-13 13:23:46,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:23:46,344 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2024-11-13 13:23:46,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-13 13:23:46,345 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 16 states have internal predecessors, (31), 8 states have call successors, (8), 1 states have call predecessors, (8), 5 states have return successors, (14), 5 states have call predecessors, (14), 8 states have call successors, (14) Word has length 34 [2024-11-13 13:23:46,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:23:46,345 INFO L225 Difference]: With dead ends: 31 [2024-11-13 13:23:46,346 INFO L226 Difference]: Without dead ends: 27 [2024-11-13 13:23:46,346 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 65 SyntacticMatches, 5 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=118, Invalid=262, Unknown=0, NotChecked=0, Total=380 [2024-11-13 13:23:46,347 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 41 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 13:23:46,347 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 60 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 13:23:46,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-11-13 13:23:46,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2024-11-13 13:23:46,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 18 states have (on average 1.0555555555555556) internal successors, (19), 19 states have internal predecessors, (19), 2 states have call successors, (2), 1 states have call predecessors, (2), 6 states have return successors, (7), 6 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-13 13:23:46,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2024-11-13 13:23:46,353 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 34 [2024-11-13 13:23:46,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:23:46,353 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2024-11-13 13:23:46,354 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 16 states have internal predecessors, (31), 8 states have call successors, (8), 1 states have call predecessors, (8), 5 states have return successors, (14), 5 states have call predecessors, (14), 8 states have call successors, (14) [2024-11-13 13:23:46,354 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2024-11-13 13:23:46,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-13 13:23:46,355 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:23:46,355 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:23:46,374 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e875a28-644a-4827-aea1-2323cb168560/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-13 13:23:46,558 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e875a28-644a-4827-aea1-2323cb168560/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:23:46,558 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:23:46,559 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:23:46,559 INFO L85 PathProgramCache]: Analyzing trace with hash -886339242, now seen corresponding path program 5 times [2024-11-13 13:23:46,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:23:46,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664358838] [2024-11-13 13:23:46,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:23:46,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:23:46,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:23:46,663 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 13:23:46,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:23:46,767 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 13:23:46,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:23:46,839 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 13:23:46,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:23:46,895 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 13:23:46,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:23:46,934 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 13:23:46,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:23:46,968 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 13:23:46,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:23:46,992 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-13 13:23:46,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:23:46,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664358838] [2024-11-13 13:23:46,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664358838] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:23:46,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [47057951] [2024-11-13 13:23:46,993 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-13 13:23:46,993 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:23:46,993 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e875a28-644a-4827-aea1-2323cb168560/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:23:46,996 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e875a28-644a-4827-aea1-2323cb168560/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:23:46,997 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e875a28-644a-4827-aea1-2323cb168560/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-13 13:23:47,069 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2024-11-13 13:23:47,070 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 13:23:47,071 INFO L255 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-13 13:23:47,072 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:23:47,152 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-13 13:23:47,154 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:23:48,528 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 65 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-13 13:23:48,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [47057951] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:23:48,528 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:23:48,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 15] total 18 [2024-11-13 13:23:48,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761234778] [2024-11-13 13:23:48,528 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:23:48,529 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-13 13:23:48,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:23:48,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-13 13:23:48,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2024-11-13 13:23:48,530 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand has 18 states, 16 states have (on average 2.1875) internal successors, (35), 18 states have internal predecessors, (35), 9 states have call successors, (9), 1 states have call predecessors, (9), 6 states have return successors, (17), 6 states have call predecessors, (17), 9 states have call successors, (17) [2024-11-13 13:23:48,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:23:48,644 INFO L93 Difference]: Finished difference Result 34 states and 35 transitions. [2024-11-13 13:23:48,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-13 13:23:48,644 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 2.1875) internal successors, (35), 18 states have internal predecessors, (35), 9 states have call successors, (9), 1 states have call predecessors, (9), 6 states have return successors, (17), 6 states have call predecessors, (17), 9 states have call successors, (17) Word has length 40 [2024-11-13 13:23:48,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:23:48,645 INFO L225 Difference]: With dead ends: 34 [2024-11-13 13:23:48,646 INFO L226 Difference]: Without dead ends: 30 [2024-11-13 13:23:48,646 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 77 SyntacticMatches, 6 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=158, Invalid=348, Unknown=0, NotChecked=0, Total=506 [2024-11-13 13:23:48,647 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 13 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 13:23:48,647 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 82 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 13:23:48,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-11-13 13:23:48,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2024-11-13 13:23:48,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 20 states have (on average 1.05) internal successors, (21), 21 states have internal predecessors, (21), 2 states have call successors, (2), 1 states have call predecessors, (2), 7 states have return successors, (8), 7 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-13 13:23:48,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2024-11-13 13:23:48,653 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 40 [2024-11-13 13:23:48,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:23:48,653 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2024-11-13 13:23:48,653 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 2.1875) internal successors, (35), 18 states have internal predecessors, (35), 9 states have call successors, (9), 1 states have call predecessors, (9), 6 states have return successors, (17), 6 states have call predecessors, (17), 9 states have call successors, (17) [2024-11-13 13:23:48,653 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2024-11-13 13:23:48,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-13 13:23:48,654 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:23:48,654 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:23:48,674 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e875a28-644a-4827-aea1-2323cb168560/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-13 13:23:48,858 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e875a28-644a-4827-aea1-2323cb168560/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-13 13:23:48,858 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:23:48,859 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:23:48,859 INFO L85 PathProgramCache]: Analyzing trace with hash -918712436, now seen corresponding path program 6 times [2024-11-13 13:23:48,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:23:48,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087612049] [2024-11-13 13:23:48,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:23:48,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:23:48,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:23:48,966 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 13:23:48,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:23:49,064 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 13:23:49,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:23:49,143 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 13:23:49,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:23:49,198 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 13:23:49,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:23:49,247 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 13:23:49,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:23:49,285 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 13:23:49,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:23:49,310 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 13:23:49,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:23:49,332 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2024-11-13 13:23:49,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:23:49,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087612049] [2024-11-13 13:23:49,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087612049] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:23:49,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1097673801] [2024-11-13 13:23:49,332 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-13 13:23:49,332 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:23:49,333 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e875a28-644a-4827-aea1-2323cb168560/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:23:49,334 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e875a28-644a-4827-aea1-2323cb168560/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:23:49,336 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e875a28-644a-4827-aea1-2323cb168560/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-13 13:23:49,427 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2024-11-13 13:23:49,428 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 13:23:49,429 INFO L255 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-13 13:23:49,431 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:23:49,510 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2024-11-13 13:23:49,510 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:23:51,461 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 93 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-13 13:23:51,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1097673801] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:23:51,461 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:23:51,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 17] total 20 [2024-11-13 13:23:51,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165637013] [2024-11-13 13:23:51,462 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:23:51,462 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-13 13:23:51,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:23:51,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-13 13:23:51,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=278, Unknown=0, NotChecked=0, Total=380 [2024-11-13 13:23:51,464 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. Second operand has 20 states, 18 states have (on average 2.1666666666666665) internal successors, (39), 20 states have internal predecessors, (39), 10 states have call successors, (10), 1 states have call predecessors, (10), 7 states have return successors, (20), 7 states have call predecessors, (20), 10 states have call successors, (20) [2024-11-13 13:23:51,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:23:51,584 INFO L93 Difference]: Finished difference Result 37 states and 38 transitions. [2024-11-13 13:23:51,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-13 13:23:51,585 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 18 states have (on average 2.1666666666666665) internal successors, (39), 20 states have internal predecessors, (39), 10 states have call successors, (10), 1 states have call predecessors, (10), 7 states have return successors, (20), 7 states have call predecessors, (20), 10 states have call successors, (20) Word has length 46 [2024-11-13 13:23:51,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:23:51,586 INFO L225 Difference]: With dead ends: 37 [2024-11-13 13:23:51,586 INFO L226 Difference]: Without dead ends: 33 [2024-11-13 13:23:51,587 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 89 SyntacticMatches, 7 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 211 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=204, Invalid=446, Unknown=0, NotChecked=0, Total=650 [2024-11-13 13:23:51,587 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 28 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 13:23:51,587 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 69 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 13:23:51,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2024-11-13 13:23:51,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2024-11-13 13:23:51,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 22 states have (on average 1.0454545454545454) internal successors, (23), 23 states have internal predecessors, (23), 2 states have call successors, (2), 1 states have call predecessors, (2), 8 states have return successors, (9), 8 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-13 13:23:51,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions. [2024-11-13 13:23:51,595 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 46 [2024-11-13 13:23:51,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:23:51,595 INFO L471 AbstractCegarLoop]: Abstraction has 33 states and 34 transitions. [2024-11-13 13:23:51,596 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 18 states have (on average 2.1666666666666665) internal successors, (39), 20 states have internal predecessors, (39), 10 states have call successors, (10), 1 states have call predecessors, (10), 7 states have return successors, (20), 7 states have call predecessors, (20), 10 states have call successors, (20) [2024-11-13 13:23:51,596 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions. [2024-11-13 13:23:51,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-13 13:23:51,597 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:23:51,597 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:23:51,611 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e875a28-644a-4827-aea1-2323cb168560/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-13 13:23:51,799 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e875a28-644a-4827-aea1-2323cb168560/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-13 13:23:51,799 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:23:51,800 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:23:51,800 INFO L85 PathProgramCache]: Analyzing trace with hash -626238314, now seen corresponding path program 7 times [2024-11-13 13:23:51,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:23:51,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296910073] [2024-11-13 13:23:51,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:23:51,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:23:51,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:23:51,911 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 13:23:51,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:23:52,002 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 13:23:52,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:23:52,074 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 13:23:52,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:23:52,132 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 13:23:52,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:23:52,187 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 13:23:52,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:23:52,227 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 13:23:52,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:23:52,261 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 13:23:52,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:23:52,285 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 13:23:52,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:23:52,306 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2024-11-13 13:23:52,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:23:52,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296910073] [2024-11-13 13:23:52,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296910073] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:23:52,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1488173860] [2024-11-13 13:23:52,307 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-13 13:23:52,307 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:23:52,307 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e875a28-644a-4827-aea1-2323cb168560/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:23:52,309 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e875a28-644a-4827-aea1-2323cb168560/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:23:52,311 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e875a28-644a-4827-aea1-2323cb168560/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-13 13:23:52,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:23:52,418 INFO L255 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-13 13:23:52,420 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:23:52,501 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2024-11-13 13:23:52,501 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:23:54,903 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-13 13:23:54,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1488173860] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:23:54,903 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:23:54,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 19] total 22 [2024-11-13 13:23:54,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126888634] [2024-11-13 13:23:54,903 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:23:54,904 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-13 13:23:54,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:23:54,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-13 13:23:54,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=339, Unknown=0, NotChecked=0, Total=462 [2024-11-13 13:23:54,908 INFO L87 Difference]: Start difference. First operand 33 states and 34 transitions. Second operand has 22 states, 20 states have (on average 2.15) internal successors, (43), 22 states have internal predecessors, (43), 11 states have call successors, (11), 1 states have call predecessors, (11), 8 states have return successors, (23), 8 states have call predecessors, (23), 11 states have call successors, (23) [2024-11-13 13:23:55,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:23:55,023 INFO L93 Difference]: Finished difference Result 40 states and 41 transitions. [2024-11-13 13:23:55,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-13 13:23:55,024 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 20 states have (on average 2.15) internal successors, (43), 22 states have internal predecessors, (43), 11 states have call successors, (11), 1 states have call predecessors, (11), 8 states have return successors, (23), 8 states have call predecessors, (23), 11 states have call successors, (23) Word has length 52 [2024-11-13 13:23:55,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:23:55,024 INFO L225 Difference]: With dead ends: 40 [2024-11-13 13:23:55,024 INFO L226 Difference]: Without dead ends: 36 [2024-11-13 13:23:55,025 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 101 SyntacticMatches, 8 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 277 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=256, Invalid=556, Unknown=0, NotChecked=0, Total=812 [2024-11-13 13:23:55,026 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 17 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 13:23:55,026 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 82 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 13:23:55,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2024-11-13 13:23:55,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2024-11-13 13:23:55,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 24 states have (on average 1.0416666666666667) internal successors, (25), 25 states have internal predecessors, (25), 2 states have call successors, (2), 1 states have call predecessors, (2), 9 states have return successors, (10), 9 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-13 13:23:55,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 37 transitions. [2024-11-13 13:23:55,031 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 37 transitions. Word has length 52 [2024-11-13 13:23:55,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:23:55,031 INFO L471 AbstractCegarLoop]: Abstraction has 36 states and 37 transitions. [2024-11-13 13:23:55,032 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 20 states have (on average 2.15) internal successors, (43), 22 states have internal predecessors, (43), 11 states have call successors, (11), 1 states have call predecessors, (11), 8 states have return successors, (23), 8 states have call predecessors, (23), 11 states have call successors, (23) [2024-11-13 13:23:55,032 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 37 transitions. [2024-11-13 13:23:55,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-11-13 13:23:55,033 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:23:55,033 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:23:55,049 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e875a28-644a-4827-aea1-2323cb168560/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-13 13:23:55,233 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e875a28-644a-4827-aea1-2323cb168560/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:23:55,233 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:23:55,234 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:23:55,234 INFO L85 PathProgramCache]: Analyzing trace with hash -960511412, now seen corresponding path program 8 times [2024-11-13 13:23:55,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:23:55,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036852345] [2024-11-13 13:23:55,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:23:55,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:23:55,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:23:55,328 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 13:23:55,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:23:55,435 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 13:23:55,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:23:55,515 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 13:23:55,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:23:55,581 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 13:23:55,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:23:55,643 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 13:23:55,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:23:55,689 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 13:23:55,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:23:55,725 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 13:23:55,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:23:55,754 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 13:23:55,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:23:55,779 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 13:23:55,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:23:55,800 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-11-13 13:23:55,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:23:55,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036852345] [2024-11-13 13:23:55,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036852345] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:23:55,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1745840488] [2024-11-13 13:23:55,800 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 13:23:55,800 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:23:55,800 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e875a28-644a-4827-aea1-2323cb168560/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:23:55,802 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e875a28-644a-4827-aea1-2323cb168560/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:23:55,806 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e875a28-644a-4827-aea1-2323cb168560/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-13 13:23:55,942 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 13:23:55,942 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 13:23:55,944 INFO L255 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-13 13:23:55,946 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:23:56,034 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-11-13 13:23:56,034 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:23:59,281 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 164 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-13 13:23:59,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1745840488] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:23:59,282 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:23:59,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 21] total 24 [2024-11-13 13:23:59,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129242068] [2024-11-13 13:23:59,282 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:23:59,283 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-13 13:23:59,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:23:59,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-13 13:23:59,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=406, Unknown=0, NotChecked=0, Total=552 [2024-11-13 13:23:59,284 INFO L87 Difference]: Start difference. First operand 36 states and 37 transitions. Second operand has 24 states, 22 states have (on average 2.1363636363636362) internal successors, (47), 24 states have internal predecessors, (47), 12 states have call successors, (12), 1 states have call predecessors, (12), 9 states have return successors, (26), 9 states have call predecessors, (26), 12 states have call successors, (26) [2024-11-13 13:23:59,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:23:59,446 INFO L93 Difference]: Finished difference Result 43 states and 44 transitions. [2024-11-13 13:23:59,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-13 13:23:59,447 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 22 states have (on average 2.1363636363636362) internal successors, (47), 24 states have internal predecessors, (47), 12 states have call successors, (12), 1 states have call predecessors, (12), 9 states have return successors, (26), 9 states have call predecessors, (26), 12 states have call successors, (26) Word has length 58 [2024-11-13 13:23:59,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:23:59,449 INFO L225 Difference]: With dead ends: 43 [2024-11-13 13:23:59,449 INFO L226 Difference]: Without dead ends: 39 [2024-11-13 13:23:59,449 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 113 SyntacticMatches, 9 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 352 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=314, Invalid=678, Unknown=0, NotChecked=0, Total=992 [2024-11-13 13:23:59,451 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 68 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 13:23:59,452 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 81 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 13:23:59,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2024-11-13 13:23:59,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2024-11-13 13:23:59,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 26 states have (on average 1.0384615384615385) internal successors, (27), 27 states have internal predecessors, (27), 2 states have call successors, (2), 1 states have call predecessors, (2), 10 states have return successors, (11), 10 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-13 13:23:59,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 40 transitions. [2024-11-13 13:23:59,462 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 40 transitions. Word has length 58 [2024-11-13 13:23:59,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:23:59,465 INFO L471 AbstractCegarLoop]: Abstraction has 39 states and 40 transitions. [2024-11-13 13:23:59,465 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 22 states have (on average 2.1363636363636362) internal successors, (47), 24 states have internal predecessors, (47), 12 states have call successors, (12), 1 states have call predecessors, (12), 9 states have return successors, (26), 9 states have call predecessors, (26), 12 states have call successors, (26) [2024-11-13 13:23:59,465 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 40 transitions. [2024-11-13 13:23:59,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-13 13:23:59,466 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:23:59,466 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:23:59,488 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e875a28-644a-4827-aea1-2323cb168560/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-13 13:23:59,667 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e875a28-644a-4827-aea1-2323cb168560/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:23:59,668 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:23:59,668 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:23:59,669 INFO L85 PathProgramCache]: Analyzing trace with hash -366706730, now seen corresponding path program 9 times [2024-11-13 13:23:59,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:23:59,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768828046] [2024-11-13 13:23:59,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:23:59,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:23:59,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:23:59,776 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 13:23:59,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:23:59,914 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 13:23:59,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:24:00,003 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 13:24:00,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:24:00,094 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 13:24:00,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:24:00,170 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 13:24:00,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:24:00,220 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 13:24:00,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:24:00,264 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 13:24:00,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:24:00,299 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 13:24:00,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:24:00,329 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 13:24:00,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:24:00,357 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 13:24:00,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:24:00,382 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2024-11-13 13:24:00,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:24:00,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768828046] [2024-11-13 13:24:00,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768828046] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:24:00,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1159889769] [2024-11-13 13:24:00,384 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 13:24:00,384 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:24:00,384 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e875a28-644a-4827-aea1-2323cb168560/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:24:00,386 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e875a28-644a-4827-aea1-2323cb168560/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:24:00,388 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e875a28-644a-4827-aea1-2323cb168560/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-13 13:24:00,565 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2024-11-13 13:24:00,566 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 13:24:00,567 INFO L255 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-13 13:24:00,569 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:24:00,657 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2024-11-13 13:24:00,657 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:24:05,256 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 207 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-13 13:24:05,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1159889769] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:24:05,257 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:24:05,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 23] total 25 [2024-11-13 13:24:05,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920659710] [2024-11-13 13:24:05,257 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:24:05,257 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-13 13:24:05,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:24:05,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-13 13:24:05,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=432, Unknown=0, NotChecked=0, Total=600 [2024-11-13 13:24:05,259 INFO L87 Difference]: Start difference. First operand 39 states and 40 transitions. Second operand has 25 states, 24 states have (on average 2.0833333333333335) internal successors, (50), 25 states have internal predecessors, (50), 12 states have call successors, (12), 1 states have call predecessors, (12), 10 states have return successors, (28), 10 states have call predecessors, (28), 12 states have call successors, (28) [2024-11-13 13:24:05,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:24:05,395 INFO L93 Difference]: Finished difference Result 46 states and 47 transitions. [2024-11-13 13:24:05,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-13 13:24:05,396 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 2.0833333333333335) internal successors, (50), 25 states have internal predecessors, (50), 12 states have call successors, (12), 1 states have call predecessors, (12), 10 states have return successors, (28), 10 states have call predecessors, (28), 12 states have call successors, (28) Word has length 64 [2024-11-13 13:24:05,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:24:05,396 INFO L225 Difference]: With dead ends: 46 [2024-11-13 13:24:05,396 INFO L226 Difference]: Without dead ends: 42 [2024-11-13 13:24:05,397 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 125 SyntacticMatches, 11 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 406 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=375, Invalid=747, Unknown=0, NotChecked=0, Total=1122 [2024-11-13 13:24:05,398 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 21 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 13:24:05,398 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 83 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 13:24:05,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2024-11-13 13:24:05,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2024-11-13 13:24:05,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 28 states have (on average 1.0357142857142858) internal successors, (29), 29 states have internal predecessors, (29), 2 states have call successors, (2), 1 states have call predecessors, (2), 11 states have return successors, (12), 11 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-13 13:24:05,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 43 transitions. [2024-11-13 13:24:05,411 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 43 transitions. Word has length 64 [2024-11-13 13:24:05,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:24:05,412 INFO L471 AbstractCegarLoop]: Abstraction has 42 states and 43 transitions. [2024-11-13 13:24:05,413 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 2.0833333333333335) internal successors, (50), 25 states have internal predecessors, (50), 12 states have call successors, (12), 1 states have call predecessors, (12), 10 states have return successors, (28), 10 states have call predecessors, (28), 12 states have call successors, (28) [2024-11-13 13:24:05,413 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 43 transitions. [2024-11-13 13:24:05,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-13 13:24:05,415 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:24:05,415 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:24:05,433 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e875a28-644a-4827-aea1-2323cb168560/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-13 13:24:05,618 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e875a28-644a-4827-aea1-2323cb168560/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-13 13:24:05,618 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:24:05,618 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:24:05,618 INFO L85 PathProgramCache]: Analyzing trace with hash -1719425780, now seen corresponding path program 10 times [2024-11-13 13:24:05,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:24:05,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007444431] [2024-11-13 13:24:05,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:24:05,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:24:05,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:24:06,060 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 13:24:06,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:24:06,551 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 13:24:06,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:24:06,921 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 13:24:06,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:24:07,226 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 13:24:07,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:24:07,484 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 13:24:07,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:24:07,668 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 13:24:07,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:24:07,807 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 13:24:07,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:24:07,940 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 13:24:07,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:24:08,043 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 13:24:08,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:24:08,131 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 13:24:08,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:24:08,182 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 13:24:08,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:24:08,214 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked. [2024-11-13 13:24:08,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:24:08,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007444431] [2024-11-13 13:24:08,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007444431] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:24:08,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2040833318] [2024-11-13 13:24:08,215 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-13 13:24:08,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:24:08,215 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e875a28-644a-4827-aea1-2323cb168560/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:24:08,217 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e875a28-644a-4827-aea1-2323cb168560/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:24:08,220 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e875a28-644a-4827-aea1-2323cb168560/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-13 13:24:08,484 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-13 13:24:08,484 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 13:24:08,487 INFO L255 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 97 conjuncts are in the unsatisfiable core [2024-11-13 13:24:08,493 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:24:09,330 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 19 proven. 155 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2024-11-13 13:24:09,331 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:24:12,825 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2024-11-13 13:24:12,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2040833318] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:24:12,825 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:24:12,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 29, 29] total 41 [2024-11-13 13:24:12,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553921728] [2024-11-13 13:24:12,825 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:24:12,826 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-11-13 13:24:12,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:24:12,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-11-13 13:24:12,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=1544, Unknown=0, NotChecked=0, Total=1640 [2024-11-13 13:24:12,829 INFO L87 Difference]: Start difference. First operand 42 states and 43 transitions. Second operand has 41 states, 37 states have (on average 1.2702702702702702) internal successors, (47), 27 states have internal predecessors, (47), 6 states have call successors, (6), 1 states have call predecessors, (6), 14 states have return successors, (15), 14 states have call predecessors, (15), 6 states have call successors, (15) [2024-11-13 13:24:14,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:24:14,088 INFO L93 Difference]: Finished difference Result 45 states and 47 transitions. [2024-11-13 13:24:14,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-13 13:24:14,089 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 37 states have (on average 1.2702702702702702) internal successors, (47), 27 states have internal predecessors, (47), 6 states have call successors, (6), 1 states have call predecessors, (6), 14 states have return successors, (15), 14 states have call predecessors, (15), 6 states have call successors, (15) Word has length 70 [2024-11-13 13:24:14,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:24:14,089 INFO L225 Difference]: With dead ends: 45 [2024-11-13 13:24:14,089 INFO L226 Difference]: Without dead ends: 0 [2024-11-13 13:24:14,091 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 560 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=401, Invalid=4155, Unknown=0, NotChecked=0, Total=4556 [2024-11-13 13:24:14,091 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 89 mSDsluCounter, 379 mSDsCounter, 0 mSdLazyCounter, 816 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 395 SdHoareTripleChecker+Invalid, 867 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 816 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-13 13:24:14,092 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 395 Invalid, 867 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 816 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-13 13:24:14,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-13 13:24:14,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-13 13:24:14,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:24:14,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-13 13:24:14,092 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 70 [2024-11-13 13:24:14,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:24:14,093 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-13 13:24:14,093 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 37 states have (on average 1.2702702702702702) internal successors, (47), 27 states have internal predecessors, (47), 6 states have call successors, (6), 1 states have call predecessors, (6), 14 states have return successors, (15), 14 states have call predecessors, (15), 6 states have call successors, (15) [2024-11-13 13:24:14,093 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-13 13:24:14,093 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-13 13:24:14,095 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-13 13:24:14,116 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e875a28-644a-4827-aea1-2323cb168560/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-13 13:24:14,296 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e875a28-644a-4827-aea1-2323cb168560/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:24:14,299 INFO L407 BasicCegarLoop]: Path program histogram: [10, 1] [2024-11-13 13:24:14,301 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-13 13:24:14,514 INFO L173 ceAbstractionStarter]: Computing trace abstraction results [2024-11-13 13:24:14,535 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.11 01:24:14 BoogieIcfgContainer [2024-11-13 13:24:14,536 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-13 13:24:14,536 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-13 13:24:14,536 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-13 13:24:14,537 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-13 13:24:14,537 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:23:40" (3/4) ... [2024-11-13 13:24:14,539 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-13 13:24:14,545 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure sum [2024-11-13 13:24:14,548 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2024-11-13 13:24:14,549 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2024-11-13 13:24:14,549 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-13 13:24:14,549 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-13 13:24:14,630 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e875a28-644a-4827-aea1-2323cb168560/bin/uautomizer-verify-qhAvR1uOyd/witness.graphml [2024-11-13 13:24:14,630 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e875a28-644a-4827-aea1-2323cb168560/bin/uautomizer-verify-qhAvR1uOyd/witness.yml [2024-11-13 13:24:14,631 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-13 13:24:14,631 INFO L158 Benchmark]: Toolchain (without parser) took 35130.04ms. Allocated memory was 117.4MB in the beginning and 310.4MB in the end (delta: 192.9MB). Free memory was 92.6MB in the beginning and 209.2MB in the end (delta: -116.6MB). Peak memory consumption was 76.8MB. Max. memory is 16.1GB. [2024-11-13 13:24:14,632 INFO L158 Benchmark]: CDTParser took 1.02ms. Allocated memory is still 117.4MB. Free memory is still 73.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 13:24:14,632 INFO L158 Benchmark]: CACSL2BoogieTranslator took 304.34ms. Allocated memory is still 117.4MB. Free memory was 92.4MB in the beginning and 81.9MB in the end (delta: 10.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-13 13:24:14,633 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.90ms. Allocated memory is still 117.4MB. Free memory was 81.9MB in the beginning and 80.8MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 13:24:14,633 INFO L158 Benchmark]: Boogie Preprocessor took 44.73ms. Allocated memory is still 117.4MB. Free memory was 80.8MB in the beginning and 79.9MB in the end (delta: 876.5kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 13:24:14,634 INFO L158 Benchmark]: RCFGBuilder took 272.02ms. Allocated memory is still 117.4MB. Free memory was 79.9MB in the beginning and 70.8MB in the end (delta: 9.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-13 13:24:14,634 INFO L158 Benchmark]: TraceAbstraction took 34363.31ms. Allocated memory was 117.4MB in the beginning and 310.4MB in the end (delta: 192.9MB). Free memory was 70.4MB in the beginning and 213.9MB in the end (delta: -143.5MB). Peak memory consumption was 43.2MB. Max. memory is 16.1GB. [2024-11-13 13:24:14,635 INFO L158 Benchmark]: Witness Printer took 94.25ms. Allocated memory is still 310.4MB. Free memory was 213.9MB in the beginning and 209.2MB in the end (delta: 4.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-13 13:24:14,636 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.02ms. Allocated memory is still 117.4MB. Free memory is still 73.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 304.34ms. Allocated memory is still 117.4MB. Free memory was 92.4MB in the beginning and 81.9MB in the end (delta: 10.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 41.90ms. Allocated memory is still 117.4MB. Free memory was 81.9MB in the beginning and 80.8MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 44.73ms. Allocated memory is still 117.4MB. Free memory was 80.8MB in the beginning and 79.9MB in the end (delta: 876.5kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 272.02ms. Allocated memory is still 117.4MB. Free memory was 79.9MB in the beginning and 70.8MB in the end (delta: 9.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 34363.31ms. Allocated memory was 117.4MB in the beginning and 310.4MB in the end (delta: 192.9MB). Free memory was 70.4MB in the beginning and 213.9MB in the end (delta: -143.5MB). Peak memory consumption was 43.2MB. Max. memory is 16.1GB. * Witness Printer took 94.25ms. Allocated memory is still 310.4MB. Free memory was 213.9MB in the beginning and 209.2MB in the end (delta: 4.7MB). Peak memory consumption was 8.4MB. 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: 18]: 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 2 procedures, 16 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 34.0s, OverallIterations: 11, TraceHistogramMax: 11, PathProgramHistogramMax: 10, EmptinessCheckTime: 0.0s, AutomataDifference: 2.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 397 SdHoareTripleChecker+Valid, 1.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 322 mSDsluCounter, 1019 SdHoareTripleChecker+Invalid, 1.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 901 mSDsCounter, 125 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1380 IncrementalHoareTripleChecker+Invalid, 1505 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 125 mSolverCounterUnsat, 118 mSDtfsCounter, 1380 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1155 GetRequests, 843 SyntacticMatches, 55 SemanticMatches, 257 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2186 ImplicationChecksByTransitivity, 3.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=42occurred in iteration=10, InterpolantAutomatonStates: 125, 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, 11 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 27.9s InterpolantComputationTime, 870 NumberOfCodeBlocks, 864 NumberOfCodeBlocksAsserted, 47 NumberOfCheckSat, 1269 ConstructedInterpolants, 0 QuantifiedInterpolants, 3974 SizeOfPredicates, 57 NumberOfNonLiveVariables, 1421 ConjunctsInSsa, 223 ConjunctsInUnsatCore, 31 InterpolantComputations, 1 PerfectInterpolantSequences, 1646/3630 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 - ProcedureContractResult [Line: 5]: Procedure Contract for sum Derived contract for procedure sum. Ensures: (\result == ((long long) n + m)) RESULT: Ultimate proved your program to be correct! [2024-11-13 13:24:14,674 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e875a28-644a-4827-aea1-2323cb168560/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE