./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/pcompf.c --full-output --architecture 32bit
--------------------------------------------------------------------------------
Checking for ERROR reachability
Using default analysis
Version a046e57d
Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/pcompf.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 f995d1a14a0e61f10b2f5817b1ff2bf8d1511dbe7297ad48450a11ed6f3a9160
--- Real Ultimate output ---
This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m
[2024-10-12 15:05:36,863 INFO L188 SettingsManager]: Resetting all preferences to default values...
[2024-10-12 15:05:36,919 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf
[2024-10-12 15:05:36,923 WARN L101 SettingsManager]: Preference file contains the following unknown settings:
[2024-10-12 15:05:36,923 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2024-10-12 15:05:36,942 INFO L130 SettingsManager]: Preferences different from defaults after loading the file:
[2024-10-12 15:05:36,944 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2024-10-12 15:05:36,944 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2024-10-12 15:05:36,945 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2024-10-12 15:05:36,946 INFO L153 SettingsManager]: * Use memory slicer=true
[2024-10-12 15:05:36,947 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2024-10-12 15:05:36,947 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2024-10-12 15:05:36,947 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2024-10-12 15:05:36,947 INFO L153 SettingsManager]: * Create parallel compositions if possible=false
[2024-10-12 15:05:36,949 INFO L153 SettingsManager]: * Use SBE=true
[2024-10-12 15:05:36,949 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2024-10-12 15:05:36,949 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2024-10-12 15:05:36,950 INFO L153 SettingsManager]: * sizeof long=4
[2024-10-12 15:05:36,950 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true
[2024-10-12 15:05:36,950 INFO L153 SettingsManager]: * sizeof POINTER=4
[2024-10-12 15:05:36,950 INFO L153 SettingsManager]: * Check division by zero=IGNORE
[2024-10-12 15:05:36,952 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2024-10-12 15:05:36,952 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2024-10-12 15:05:36,953 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2024-10-12 15:05:36,953 INFO L153 SettingsManager]: * Allow undefined functions=false
[2024-10-12 15:05:36,953 INFO L153 SettingsManager]: * sizeof long double=12
[2024-10-12 15:05:36,953 INFO L153 SettingsManager]: * Check if freed pointer was valid=false
[2024-10-12 15:05:36,953 INFO L153 SettingsManager]: * Use constant arrays=true
[2024-10-12 15:05:36,954 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2024-10-12 15:05:36,954 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements
[2024-10-12 15:05:36,954 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true
[2024-10-12 15:05:36,954 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode
[2024-10-12 15:05:36,954 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-10-12 15:05:36,954 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2024-10-12 15:05:36,955 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2024-10-12 15:05:36,955 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads
[2024-10-12 15:05:36,955 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL
[2024-10-12 15:05:36,955 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2024-10-12 15:05:36,955 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false
[2024-10-12 15:05:36,955 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET
[2024-10-12 15:05:36,955 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO
[2024-10-12 15:05:36,957 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode
[2024-10-12 15:05:36,957 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int)
WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) )
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f995d1a14a0e61f10b2f5817b1ff2bf8d1511dbe7297ad48450a11ed6f3a9160
[2024-10-12 15:05:37,153 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2024-10-12 15:05:37,171 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2024-10-12 15:05:37,173 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2024-10-12 15:05:37,174 INFO L270 PluginConnector]: Initializing CDTParser...
[2024-10-12 15:05:37,175 INFO L274 PluginConnector]: CDTParser initialized
[2024-10-12 15:05:37,175 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/pcompf.c
[2024-10-12 15:05:38,359 INFO L533 CDTParser]: Created temporary CDT project at NULL
[2024-10-12 15:05:38,499 INFO L384 CDTParser]: Found 1 translation units.
[2024-10-12 15:05:38,499 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/pcompf.c
[2024-10-12 15:05:38,507 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d24fd0948/af8d994c264a44c8a79568b8f5b309d0/FLAGccf517132
[2024-10-12 15:05:38,518 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d24fd0948/af8d994c264a44c8a79568b8f5b309d0
[2024-10-12 15:05:38,520 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2024-10-12 15:05:38,521 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements.
[2024-10-12 15:05:38,522 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2024-10-12 15:05:38,523 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2024-10-12 15:05:38,527 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized
[2024-10-12 15:05:38,527 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 03:05:38" (1/1) ...
[2024-10-12 15:05:38,528 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@129ed804 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:05:38, skipping insertion in model container
[2024-10-12 15:05:38,528 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 03:05:38" (1/1) ...
[2024-10-12 15:05:38,544 INFO L175 MainTranslator]: Built tables and reachable declarations
[2024-10-12 15:05:38,677 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/pcompf.c[589,602]
[2024-10-12 15:05:38,693 INFO L210 PostProcessor]: Analyzing one entry point: main
[2024-10-12 15:05:38,704 INFO L200 MainTranslator]: Completed pre-run
[2024-10-12 15:05:38,713 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/pcompf.c[589,602]
[2024-10-12 15:05:38,718 INFO L210 PostProcessor]: Analyzing one entry point: main
[2024-10-12 15:05:38,730 INFO L204 MainTranslator]: Completed translation
[2024-10-12 15:05:38,731 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:05:38 WrapperNode
[2024-10-12 15:05:38,731 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2024-10-12 15:05:38,732 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2024-10-12 15:05:38,732 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner...
[2024-10-12 15:05:38,732 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized
[2024-10-12 15:05:38,737 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:05:38" (1/1) ...
[2024-10-12 15:05:38,743 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:05:38" (1/1) ...
[2024-10-12 15:05:38,760 INFO L138 Inliner]: procedures = 16, calls = 24, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 89
[2024-10-12 15:05:38,760 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2024-10-12 15:05:38,761 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2024-10-12 15:05:38,762 INFO L270 PluginConnector]: Initializing Boogie Preprocessor...
[2024-10-12 15:05:38,762 INFO L274 PluginConnector]: Boogie Preprocessor initialized
[2024-10-12 15:05:38,770 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:05:38" (1/1) ...
[2024-10-12 15:05:38,770 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:05:38" (1/1) ...
[2024-10-12 15:05:38,772 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:05:38" (1/1) ...
[2024-10-12 15:05:38,783 INFO L175 MemorySlicer]: Split 14 memory accesses to 4 slices as follows [2, 4, 4, 4]. 29 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0]. The 6 writes are split as follows [0, 2, 2, 2].
[2024-10-12 15:05:38,783 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:05:38" (1/1) ...
[2024-10-12 15:05:38,784 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:05:38" (1/1) ...
[2024-10-12 15:05:38,787 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:05:38" (1/1) ...
[2024-10-12 15:05:38,791 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:05:38" (1/1) ...
[2024-10-12 15:05:38,793 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:05:38" (1/1) ...
[2024-10-12 15:05:38,794 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:05:38" (1/1) ...
[2024-10-12 15:05:38,796 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2024-10-12 15:05:38,796 INFO L112 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2024-10-12 15:05:38,797 INFO L270 PluginConnector]: Initializing RCFGBuilder...
[2024-10-12 15:05:38,797 INFO L274 PluginConnector]: RCFGBuilder initialized
[2024-10-12 15:05:38,797 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:05:38" (1/1) ...
[2024-10-12 15:05:38,806 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-10-12 15:05:38,815 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-10-12 15:05:38,832 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null)
[2024-10-12 15:05:38,835 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process
[2024-10-12 15:05:38,871 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2024-10-12 15:05:38,871 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0
[2024-10-12 15:05:38,871 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1
[2024-10-12 15:05:38,871 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2
[2024-10-12 15:05:38,872 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3
[2024-10-12 15:05:38,872 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0
[2024-10-12 15:05:38,872 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1
[2024-10-12 15:05:38,872 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2
[2024-10-12 15:05:38,872 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3
[2024-10-12 15:05:38,872 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap
[2024-10-12 15:05:38,872 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2024-10-12 15:05:38,872 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2024-10-12 15:05:38,872 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0
[2024-10-12 15:05:38,872 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1
[2024-10-12 15:05:38,872 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2
[2024-10-12 15:05:38,873 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3
[2024-10-12 15:05:38,950 INFO L238 CfgBuilder]: Building ICFG
[2024-10-12 15:05:38,952 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation
[2024-10-12 15:05:39,115 INFO L? ?]: Removed 12 outVars from TransFormulas that were not future-live.
[2024-10-12 15:05:39,115 INFO L287 CfgBuilder]: Performing block encoding
[2024-10-12 15:05:39,194 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2024-10-12 15:05:39,194 INFO L314 CfgBuilder]: Removed 4 assume(true) statements.
[2024-10-12 15:05:39,195 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 03:05:39 BoogieIcfgContainer
[2024-10-12 15:05:39,195 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2024-10-12 15:05:39,197 INFO L112 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2024-10-12 15:05:39,197 INFO L270 PluginConnector]: Initializing TraceAbstraction...
[2024-10-12 15:05:39,200 INFO L274 PluginConnector]: TraceAbstraction initialized
[2024-10-12 15:05:39,200 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 03:05:38" (1/3) ...
[2024-10-12 15:05:39,201 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bb9a474 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 03:05:39, skipping insertion in model container
[2024-10-12 15:05:39,201 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:05:38" (2/3) ...
[2024-10-12 15:05:39,201 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bb9a474 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 03:05:39, skipping insertion in model container
[2024-10-12 15:05:39,201 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 03:05:39" (3/3) ...
[2024-10-12 15:05:39,202 INFO L112 eAbstractionObserver]: Analyzing ICFG pcompf.c
[2024-10-12 15:05:39,238 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2024-10-12 15:05:39,238 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2024-10-12 15:05:39,287 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2024-10-12 15:05:39,293 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;@2afe13d2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-10-12 15:05:39,294 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2024-10-12 15:05:39,297 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 16 states have (on average 1.75) internal successors, (28), 17 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-10-12 15:05:39,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2024-10-12 15:05:39,304 INFO L207 NwaCegarLoop]: Found error trace
[2024-10-12 15:05:39,304 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-10-12 15:05:39,304 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-10-12 15:05:39,308 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-10-12 15:05:39,309 INFO L85 PathProgramCache]: Analyzing trace with hash -1188727277, now seen corresponding path program 1 times
[2024-10-12 15:05:39,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-10-12 15:05:39,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037475297]
[2024-10-12 15:05:39,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-10-12 15:05:39,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-10-12 15:05:39,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-10-12 15:05:39,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-10-12 15:05:39,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-10-12 15:05:39,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037475297]
[2024-10-12 15:05:39,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037475297] provided 1 perfect and 0 imperfect interpolant sequences
[2024-10-12 15:05:39,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-10-12 15:05:39,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2024-10-12 15:05:39,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70835345]
[2024-10-12 15:05:39,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-10-12 15:05:39,455 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2024-10-12 15:05:39,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-10-12 15:05:39,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2024-10-12 15:05:39,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2024-10-12 15:05:39,474 INFO L87 Difference]: Start difference. First operand has 18 states, 16 states have (on average 1.75) internal successors, (28), 17 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-10-12 15:05:39,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-10-12 15:05:39,503 INFO L93 Difference]: Finished difference Result 33 states and 51 transitions.
[2024-10-12 15:05:39,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states.
[2024-10-12 15:05:39,505 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13
[2024-10-12 15:05:39,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-10-12 15:05:39,511 INFO L225 Difference]: With dead ends: 33
[2024-10-12 15:05:39,511 INFO L226 Difference]: Without dead ends: 15
[2024-10-12 15:05:39,514 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2024-10-12 15:05:39,518 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-10-12 15:05:39,519 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 16 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-10-12 15:05:39,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states.
[2024-10-12 15:05:39,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15.
[2024-10-12 15:05:39,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 14 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-10-12 15:05:39,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 18 transitions.
[2024-10-12 15:05:39,540 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 18 transitions. Word has length 13
[2024-10-12 15:05:39,540 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-10-12 15:05:39,540 INFO L471 AbstractCegarLoop]: Abstraction has 15 states and 18 transitions.
[2024-10-12 15:05:39,540 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-10-12 15:05:39,540 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 18 transitions.
[2024-10-12 15:05:39,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2024-10-12 15:05:39,541 INFO L207 NwaCegarLoop]: Found error trace
[2024-10-12 15:05:39,541 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-10-12 15:05:39,541 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2024-10-12 15:05:39,541 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-10-12 15:05:39,541 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-10-12 15:05:39,541 INFO L85 PathProgramCache]: Analyzing trace with hash -487662699, now seen corresponding path program 1 times
[2024-10-12 15:05:39,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-10-12 15:05:39,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029069744]
[2024-10-12 15:05:39,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-10-12 15:05:39,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-10-12 15:05:39,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown
[2024-10-12 15:05:39,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1637816778]
[2024-10-12 15:05:39,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-10-12 15:05:39,586 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-10-12 15:05:39,586 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-10-12 15:05:39,588 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-10-12 15:05:39,589 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2024-10-12 15:05:39,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-10-12 15:05:39,653 INFO L255 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjuncts are in the unsatisfiable core
[2024-10-12 15:05:39,657 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-10-12 15:05:39,707 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7
[2024-10-12 15:05:39,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-10-12 15:05:39,802 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-10-12 15:05:39,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-10-12 15:05:39,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029069744]
[2024-10-12 15:05:39,804 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2024-10-12 15:05:39,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1637816778]
[2024-10-12 15:05:39,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1637816778] provided 1 perfect and 0 imperfect interpolant sequences
[2024-10-12 15:05:39,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-10-12 15:05:39,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2024-10-12 15:05:39,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026409282]
[2024-10-12 15:05:39,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-10-12 15:05:39,807 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2024-10-12 15:05:39,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-10-12 15:05:39,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2024-10-12 15:05:39,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2024-10-12 15:05:39,809 INFO L87 Difference]: Start difference. First operand 15 states and 18 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-10-12 15:05:39,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-10-12 15:05:39,861 INFO L93 Difference]: Finished difference Result 27 states and 31 transitions.
[2024-10-12 15:05:39,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2024-10-12 15:05:39,862 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13
[2024-10-12 15:05:39,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-10-12 15:05:39,862 INFO L225 Difference]: With dead ends: 27
[2024-10-12 15:05:39,862 INFO L226 Difference]: Without dead ends: 25
[2024-10-12 15:05:39,863 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30
[2024-10-12 15:05:39,864 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 12 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-10-12 15:05:39,865 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 34 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-10-12 15:05:39,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states.
[2024-10-12 15:05:39,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 19.
[2024-10-12 15:05:39,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 18 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-10-12 15:05:39,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions.
[2024-10-12 15:05:39,872 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 13
[2024-10-12 15:05:39,872 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-10-12 15:05:39,872 INFO L471 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions.
[2024-10-12 15:05:39,872 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-10-12 15:05:39,872 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions.
[2024-10-12 15:05:39,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15
[2024-10-12 15:05:39,873 INFO L207 NwaCegarLoop]: Found error trace
[2024-10-12 15:05:39,873 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-10-12 15:05:39,886 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0
[2024-10-12 15:05:40,073 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-10-12 15:05:40,074 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-10-12 15:05:40,074 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-10-12 15:05:40,074 INFO L85 PathProgramCache]: Analyzing trace with hash -1095105113, now seen corresponding path program 1 times
[2024-10-12 15:05:40,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-10-12 15:05:40,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354886026]
[2024-10-12 15:05:40,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-10-12 15:05:40,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-10-12 15:05:40,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-10-12 15:05:40,228 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-10-12 15:05:40,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-10-12 15:05:40,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354886026]
[2024-10-12 15:05:40,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354886026] provided 1 perfect and 0 imperfect interpolant sequences
[2024-10-12 15:05:40,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-10-12 15:05:40,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2024-10-12 15:05:40,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671804732]
[2024-10-12 15:05:40,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-10-12 15:05:40,229 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2024-10-12 15:05:40,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-10-12 15:05:40,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2024-10-12 15:05:40,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2024-10-12 15:05:40,230 INFO L87 Difference]: Start difference. First operand 19 states and 23 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-10-12 15:05:40,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-10-12 15:05:40,269 INFO L93 Difference]: Finished difference Result 43 states and 54 transitions.
[2024-10-12 15:05:40,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2024-10-12 15:05:40,269 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14
[2024-10-12 15:05:40,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-10-12 15:05:40,270 INFO L225 Difference]: With dead ends: 43
[2024-10-12 15:05:40,270 INFO L226 Difference]: Without dead ends: 30
[2024-10-12 15:05:40,271 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2024-10-12 15:05:40,271 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 7 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-10-12 15:05:40,273 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 21 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-10-12 15:05:40,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states.
[2024-10-12 15:05:40,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 25.
[2024-10-12 15:05:40,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.2916666666666667) internal successors, (31), 24 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-10-12 15:05:40,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 31 transitions.
[2024-10-12 15:05:40,279 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 31 transitions. Word has length 14
[2024-10-12 15:05:40,279 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-10-12 15:05:40,279 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 31 transitions.
[2024-10-12 15:05:40,279 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-10-12 15:05:40,280 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 31 transitions.
[2024-10-12 15:05:40,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17
[2024-10-12 15:05:40,280 INFO L207 NwaCegarLoop]: Found error trace
[2024-10-12 15:05:40,280 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-10-12 15:05:40,280 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2024-10-12 15:05:40,280 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-10-12 15:05:40,281 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-10-12 15:05:40,281 INFO L85 PathProgramCache]: Analyzing trace with hash 1920173534, now seen corresponding path program 1 times
[2024-10-12 15:05:40,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-10-12 15:05:40,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110527218]
[2024-10-12 15:05:40,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-10-12 15:05:40,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-10-12 15:05:40,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-10-12 15:05:40,408 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-10-12 15:05:40,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-10-12 15:05:40,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110527218]
[2024-10-12 15:05:40,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110527218] provided 0 perfect and 1 imperfect interpolant sequences
[2024-10-12 15:05:40,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [950903431]
[2024-10-12 15:05:40,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-10-12 15:05:40,411 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-10-12 15:05:40,411 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-10-12 15:05:40,415 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-10-12 15:05:40,418 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2024-10-12 15:05:40,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-10-12 15:05:40,477 INFO L255 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 5 conjuncts are in the unsatisfiable core
[2024-10-12 15:05:40,478 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-10-12 15:05:40,534 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-10-12 15:05:40,534 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-10-12 15:05:40,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [950903431] provided 1 perfect and 0 imperfect interpolant sequences
[2024-10-12 15:05:40,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2024-10-12 15:05:40,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 9
[2024-10-12 15:05:40,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539428977]
[2024-10-12 15:05:40,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-10-12 15:05:40,537 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2024-10-12 15:05:40,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-10-12 15:05:40,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2024-10-12 15:05:40,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72
[2024-10-12 15:05:40,538 INFO L87 Difference]: Start difference. First operand 25 states and 31 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-10-12 15:05:40,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-10-12 15:05:40,618 INFO L93 Difference]: Finished difference Result 37 states and 43 transitions.
[2024-10-12 15:05:40,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states.
[2024-10-12 15:05:40,618 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16
[2024-10-12 15:05:40,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-10-12 15:05:40,619 INFO L225 Difference]: With dead ends: 37
[2024-10-12 15:05:40,620 INFO L226 Difference]: Without dead ends: 23
[2024-10-12 15:05:40,620 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110
[2024-10-12 15:05:40,621 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 6 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-10-12 15:05:40,622 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 22 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-10-12 15:05:40,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states.
[2024-10-12 15:05:40,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 18.
[2024-10-12 15:05:40,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 17 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-10-12 15:05:40,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 21 transitions.
[2024-10-12 15:05:40,627 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 21 transitions. Word has length 16
[2024-10-12 15:05:40,628 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-10-12 15:05:40,628 INFO L471 AbstractCegarLoop]: Abstraction has 18 states and 21 transitions.
[2024-10-12 15:05:40,628 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-10-12 15:05:40,628 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 21 transitions.
[2024-10-12 15:05:40,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17
[2024-10-12 15:05:40,629 INFO L207 NwaCegarLoop]: Found error trace
[2024-10-12 15:05:40,629 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-10-12 15:05:40,642 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0
[2024-10-12 15:05:40,830 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3
[2024-10-12 15:05:40,830 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-10-12 15:05:40,831 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-10-12 15:05:40,831 INFO L85 PathProgramCache]: Analyzing trace with hash -1565422374, now seen corresponding path program 1 times
[2024-10-12 15:05:40,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-10-12 15:05:40,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531135003]
[2024-10-12 15:05:40,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-10-12 15:05:40,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-10-12 15:05:40,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown
[2024-10-12 15:05:40,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1680914892]
[2024-10-12 15:05:40,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-10-12 15:05:40,879 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-10-12 15:05:40,879 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-10-12 15:05:40,880 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-10-12 15:05:40,881 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2024-10-12 15:05:40,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-10-12 15:05:40,938 INFO L255 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 17 conjuncts are in the unsatisfiable core
[2024-10-12 15:05:40,940 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-10-12 15:05:40,950 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7
[2024-10-12 15:05:41,006 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 23
[2024-10-12 15:05:41,012 INFO L190 IndexEqualityManager]: detected not equals via solver
[2024-10-12 15:05:41,013 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11
[2024-10-12 15:05:41,052 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2024-10-12 15:05:41,052 INFO L311 TraceCheckSpWp]: Computing backward predicates...
[2024-10-12 15:05:41,092 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25
[2024-10-12 15:05:41,139 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2024-10-12 15:05:41,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-10-12 15:05:41,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531135003]
[2024-10-12 15:05:41,140 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2024-10-12 15:05:41,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1680914892]
[2024-10-12 15:05:41,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1680914892] provided 0 perfect and 2 imperfect interpolant sequences
[2024-10-12 15:05:41,140 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-10-12 15:05:41,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10
[2024-10-12 15:05:41,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619756861]
[2024-10-12 15:05:41,140 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-10-12 15:05:41,140 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states
[2024-10-12 15:05:41,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-10-12 15:05:41,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2024-10-12 15:05:41,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90
[2024-10-12 15:05:41,141 INFO L87 Difference]: Start difference. First operand 18 states and 21 transitions. Second operand has 10 states, 10 states have (on average 2.8) internal successors, (28), 10 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-10-12 15:05:41,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-10-12 15:05:41,208 INFO L93 Difference]: Finished difference Result 23 states and 26 transitions.
[2024-10-12 15:05:41,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2024-10-12 15:05:41,209 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.8) internal successors, (28), 10 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16
[2024-10-12 15:05:41,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-10-12 15:05:41,209 INFO L225 Difference]: With dead ends: 23
[2024-10-12 15:05:41,209 INFO L226 Difference]: Without dead ends: 21
[2024-10-12 15:05:41,210 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110
[2024-10-12 15:05:41,210 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 14 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-10-12 15:05:41,211 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 37 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-10-12 15:05:41,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states.
[2024-10-12 15:05:41,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 20.
[2024-10-12 15:05:41,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 19 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-10-12 15:05:41,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions.
[2024-10-12 15:05:41,213 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 16
[2024-10-12 15:05:41,213 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-10-12 15:05:41,214 INFO L471 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions.
[2024-10-12 15:05:41,214 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.8) internal successors, (28), 10 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-10-12 15:05:41,214 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions.
[2024-10-12 15:05:41,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20
[2024-10-12 15:05:41,214 INFO L207 NwaCegarLoop]: Found error trace
[2024-10-12 15:05:41,214 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-10-12 15:05:41,226 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0
[2024-10-12 15:05:41,418 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-10-12 15:05:41,419 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-10-12 15:05:41,419 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-10-12 15:05:41,419 INFO L85 PathProgramCache]: Analyzing trace with hash -737766791, now seen corresponding path program 1 times
[2024-10-12 15:05:41,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-10-12 15:05:41,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816707509]
[2024-10-12 15:05:41,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-10-12 15:05:41,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-10-12 15:05:41,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown
[2024-10-12 15:05:41,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1772439881]
[2024-10-12 15:05:41,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-10-12 15:05:41,458 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-10-12 15:05:41,458 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-10-12 15:05:41,459 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-10-12 15:05:41,461 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2024-10-12 15:05:41,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-10-12 15:05:41,530 INFO L255 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 32 conjuncts are in the unsatisfiable core
[2024-10-12 15:05:41,532 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-10-12 15:05:41,558 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7
[2024-10-12 15:05:41,562 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7
[2024-10-12 15:05:41,629 INFO L190 IndexEqualityManager]: detected not equals via solver
[2024-10-12 15:05:41,630 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11
[2024-10-12 15:05:41,664 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18
[2024-10-12 15:05:41,768 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2024-10-12 15:05:41,769 INFO L311 TraceCheckSpWp]: Computing backward predicates...
[2024-10-12 15:05:41,940 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2024-10-12 15:05:41,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-10-12 15:05:41,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816707509]
[2024-10-12 15:05:41,940 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2024-10-12 15:05:41,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1772439881]
[2024-10-12 15:05:41,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1772439881] provided 0 perfect and 2 imperfect interpolant sequences
[2024-10-12 15:05:41,941 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-10-12 15:05:41,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 17
[2024-10-12 15:05:41,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539813470]
[2024-10-12 15:05:41,941 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-10-12 15:05:41,943 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states
[2024-10-12 15:05:41,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-10-12 15:05:41,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants.
[2024-10-12 15:05:41,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272
[2024-10-12 15:05:41,945 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand has 17 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 17 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-10-12 15:05:42,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-10-12 15:05:42,140 INFO L93 Difference]: Finished difference Result 26 states and 29 transitions.
[2024-10-12 15:05:42,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states.
[2024-10-12 15:05:42,141 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 17 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19
[2024-10-12 15:05:42,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-10-12 15:05:42,141 INFO L225 Difference]: With dead ends: 26
[2024-10-12 15:05:42,141 INFO L226 Difference]: Without dead ends: 24
[2024-10-12 15:05:42,142 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=124, Invalid=382, Unknown=0, NotChecked=0, Total=506
[2024-10-12 15:05:42,142 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 43 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-10-12 15:05:42,143 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 38 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-10-12 15:05:42,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states.
[2024-10-12 15:05:42,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 23.
[2024-10-12 15:05:42,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 22 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-10-12 15:05:42,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions.
[2024-10-12 15:05:42,147 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 19
[2024-10-12 15:05:42,147 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-10-12 15:05:42,147 INFO L471 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions.
[2024-10-12 15:05:42,147 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 17 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-10-12 15:05:42,147 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions.
[2024-10-12 15:05:42,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23
[2024-10-12 15:05:42,148 INFO L207 NwaCegarLoop]: Found error trace
[2024-10-12 15:05:42,148 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-10-12 15:05:42,161 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0
[2024-10-12 15:05:42,351 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-10-12 15:05:42,352 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-10-12 15:05:42,352 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-10-12 15:05:42,352 INFO L85 PathProgramCache]: Analyzing trace with hash -1457539974, now seen corresponding path program 2 times
[2024-10-12 15:05:42,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-10-12 15:05:42,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132394375]
[2024-10-12 15:05:42,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-10-12 15:05:42,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-10-12 15:05:42,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-10-12 15:05:42,472 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2024-10-12 15:05:42,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-10-12 15:05:42,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132394375]
[2024-10-12 15:05:42,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1132394375] provided 0 perfect and 1 imperfect interpolant sequences
[2024-10-12 15:05:42,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [888286067]
[2024-10-12 15:05:42,473 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2024-10-12 15:05:42,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-10-12 15:05:42,474 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-10-12 15:05:42,475 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-10-12 15:05:42,476 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process
[2024-10-12 15:05:42,539 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2024-10-12 15:05:42,539 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-10-12 15:05:42,540 INFO L255 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 7 conjuncts are in the unsatisfiable core
[2024-10-12 15:05:42,541 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-10-12 15:05:42,600 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2024-10-12 15:05:42,600 INFO L311 TraceCheckSpWp]: Computing backward predicates...
[2024-10-12 15:05:42,642 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2024-10-12 15:05:42,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [888286067] provided 0 perfect and 2 imperfect interpolant sequences
[2024-10-12 15:05:42,643 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-10-12 15:05:42,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 13
[2024-10-12 15:05:42,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061033867]
[2024-10-12 15:05:42,643 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-10-12 15:05:42,643 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states
[2024-10-12 15:05:42,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-10-12 15:05:42,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2024-10-12 15:05:42,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156
[2024-10-12 15:05:42,644 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand has 13 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-10-12 15:05:42,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-10-12 15:05:42,721 INFO L93 Difference]: Finished difference Result 56 states and 66 transitions.
[2024-10-12 15:05:42,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states.
[2024-10-12 15:05:42,722 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22
[2024-10-12 15:05:42,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-10-12 15:05:42,722 INFO L225 Difference]: With dead ends: 56
[2024-10-12 15:05:42,722 INFO L226 Difference]: Without dead ends: 27
[2024-10-12 15:05:42,723 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 35 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210
[2024-10-12 15:05:42,723 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 8 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-10-12 15:05:42,723 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 38 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-10-12 15:05:42,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states.
[2024-10-12 15:05:42,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 26.
[2024-10-12 15:05:42,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.16) internal successors, (29), 25 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-10-12 15:05:42,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions.
[2024-10-12 15:05:42,727 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 22
[2024-10-12 15:05:42,727 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-10-12 15:05:42,727 INFO L471 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions.
[2024-10-12 15:05:42,727 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-10-12 15:05:42,727 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions.
[2024-10-12 15:05:42,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26
[2024-10-12 15:05:42,728 INFO L207 NwaCegarLoop]: Found error trace
[2024-10-12 15:05:42,728 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-10-12 15:05:42,739 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0
[2024-10-12 15:05:42,928 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-10-12 15:05:42,928 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-10-12 15:05:42,929 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-10-12 15:05:42,929 INFO L85 PathProgramCache]: Analyzing trace with hash 2127757397, now seen corresponding path program 3 times
[2024-10-12 15:05:42,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-10-12 15:05:42,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409331743]
[2024-10-12 15:05:42,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-10-12 15:05:42,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-10-12 15:05:42,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown
[2024-10-12 15:05:42,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [38143469]
[2024-10-12 15:05:42,958 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2024-10-12 15:05:42,958 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-10-12 15:05:42,958 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-10-12 15:05:42,960 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-10-12 15:05:42,961 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process
[2024-10-12 15:05:43,036 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s)
[2024-10-12 15:05:43,036 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat
[2024-10-12 15:05:43,036 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2024-10-12 15:05:43,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2024-10-12 15:05:43,074 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace
[2024-10-12 15:05:43,074 INFO L325 BasicCegarLoop]: Counterexample is feasible
[2024-10-12 15:05:43,075 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining)
[2024-10-12 15:05:43,096 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0
[2024-10-12 15:05:43,283 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-10-12 15:05:43,285 INFO L407 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1, 1, 1]
[2024-10-12 15:05:43,314 INFO L165 ceAbstractionStarter]: Computing trace abstraction results
[2024-10-12 15:05:43,315 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.10 03:05:43 BoogieIcfgContainer
[2024-10-12 15:05:43,316 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2024-10-12 15:05:43,316 INFO L112 PluginConnector]: ------------------------Witness Printer----------------------------
[2024-10-12 15:05:43,316 INFO L270 PluginConnector]: Initializing Witness Printer...
[2024-10-12 15:05:43,316 INFO L274 PluginConnector]: Witness Printer initialized
[2024-10-12 15:05:43,316 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 03:05:39" (3/4) ...
[2024-10-12 15:05:43,320 INFO L133 WitnessPrinter]: Generating witness for reachability counterexample
[2024-10-12 15:05:43,359 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml
[2024-10-12 15:05:43,359 INFO L131 PluginConnector]: ------------------------ END Witness Printer----------------------------
[2024-10-12 15:05:43,360 INFO L158 Benchmark]: Toolchain (without parser) took 4839.12ms. Allocated memory was 176.2MB in the beginning and 260.0MB in the end (delta: 83.9MB). Free memory was 104.6MB in the beginning and 107.6MB in the end (delta: -3.0MB). Peak memory consumption was 83.3MB. Max. memory is 16.1GB.
[2024-10-12 15:05:43,360 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 176.2MB. Free memory is still 133.4MB. There was no memory consumed. Max. memory is 16.1GB.
[2024-10-12 15:05:43,360 INFO L158 Benchmark]: CACSL2BoogieTranslator took 208.92ms. Allocated memory is still 176.2MB. Free memory was 104.4MB in the beginning and 91.6MB in the end (delta: 12.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB.
[2024-10-12 15:05:43,360 INFO L158 Benchmark]: Boogie Procedure Inliner took 28.74ms. Allocated memory is still 176.2MB. Free memory was 91.6MB in the beginning and 89.9MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
[2024-10-12 15:05:43,360 INFO L158 Benchmark]: Boogie Preprocessor took 34.75ms. Allocated memory is still 176.2MB. Free memory was 89.9MB in the beginning and 87.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
[2024-10-12 15:05:43,361 INFO L158 Benchmark]: RCFGBuilder took 398.73ms. Allocated memory is still 176.2MB. Free memory was 87.9MB in the beginning and 143.2MB in the end (delta: -55.4MB). Peak memory consumption was 20.5MB. Max. memory is 16.1GB.
[2024-10-12 15:05:43,361 INFO L158 Benchmark]: TraceAbstraction took 4118.84ms. Allocated memory was 176.2MB in the beginning and 260.0MB in the end (delta: 83.9MB). Free memory was 142.3MB in the beginning and 110.7MB in the end (delta: 31.6MB). Peak memory consumption was 115.2MB. Max. memory is 16.1GB.
[2024-10-12 15:05:43,361 INFO L158 Benchmark]: Witness Printer took 43.44ms. Allocated memory is still 260.0MB. Free memory was 110.7MB in the beginning and 107.6MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB.
[2024-10-12 15:05:43,362 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.09ms. Allocated memory is still 176.2MB. Free memory is still 133.4MB. There was no memory consumed. Max. memory is 16.1GB.
* CACSL2BoogieTranslator took 208.92ms. Allocated memory is still 176.2MB. Free memory was 104.4MB in the beginning and 91.6MB in the end (delta: 12.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB.
* Boogie Procedure Inliner took 28.74ms. Allocated memory is still 176.2MB. Free memory was 91.6MB in the beginning and 89.9MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
* Boogie Preprocessor took 34.75ms. Allocated memory is still 176.2MB. Free memory was 89.9MB in the beginning and 87.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
* RCFGBuilder took 398.73ms. Allocated memory is still 176.2MB. Free memory was 87.9MB in the beginning and 143.2MB in the end (delta: -55.4MB). Peak memory consumption was 20.5MB. Max. memory is 16.1GB.
* TraceAbstraction took 4118.84ms. Allocated memory was 176.2MB in the beginning and 260.0MB in the end (delta: 83.9MB). Free memory was 142.3MB in the beginning and 110.7MB in the end (delta: 31.6MB). Peak memory consumption was 115.2MB. Max. memory is 16.1GB.
* Witness Printer took 43.44ms. Allocated memory is still 260.0MB. Free memory was 110.7MB in the beginning and 107.6MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- StatisticsResult: ErrorAutomatonStatistics
NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0
- CounterExampleResult [Line: 15]: a call to reach_error is reachable
a call to reach_error is reachable
We found a FailurePath:
[L19] int N;
[L23] N = __VERIFIER_nondet_int()
[L24] COND FALSE !(N <= 0)
[L25] CALL assume_abort_if_not(N <= 2147483647/sizeof(int))
[L13] COND FALSE !(!cond)
VAL [N=3]
[L25] RET assume_abort_if_not(N <= 2147483647/sizeof(int))
[L27] int i;
[L28] long long *a = malloc(sizeof(long long)*N);
[L29] long long *b = malloc(sizeof(long long)*N);
[L30] long long *c = malloc(sizeof(long long)*N);
[L32] a[0] = 6
[L33] b[0] = 1
[L34] c[0] = 0
[L36] i=1
VAL [N=3, a={4:0}, b={5:0}, c={-1:0}, i=1]
[L36] COND TRUE i<N
[L38] EXPR a[i-1]
[L38] a[i] = a[i-1] + 6
[L36] i++
VAL [N=3, a={4:0}, b={5:0}, c={-1:0}, i=2]
[L36] COND TRUE i<N
[L38] EXPR a[i-1]
[L38] a[i] = a[i-1] + 6
[L36] i++
VAL [N=3, a={4:0}, b={5:0}, c={-1:0}, i=3]
[L36] COND FALSE !(i<N)
VAL [N=3, a={4:0}, b={5:0}, c={-1:0}]
[L41] i=1
VAL [N=3, a={4:0}, b={5:0}, c={-1:0}, i=1]
[L41] COND TRUE i<N
[L43] EXPR b[i-1]
[L43] EXPR a[i-1]
[L43] b[i] = b[i-1] + a[i-1]
[L41] i++
VAL [N=3, a={4:0}, b={5:0}, c={-1:0}, i=2]
[L41] COND TRUE i<N
[L43] EXPR b[i-1]
[L43] EXPR a[i-1]
[L43] b[i] = b[i-1] + a[i-1]
[L41] i++
VAL [N=3, a={4:0}, b={5:0}, c={-1:0}, i=3]
[L41] COND FALSE !(i<N)
VAL [N=3, a={4:0}, b={5:0}, c={-1:0}]
[L46] i=1
VAL [N=3, a={4:0}, b={5:0}, c={-1:0}, i=1]
[L46] COND TRUE i<N
[L48] EXPR c[i-1]
[L48] EXPR b[i-1]
[L48] c[i] = c[i-1] + b[i-1]
[L46] i++
VAL [N=3, a={4:0}, b={5:0}, c={-1:0}, i=2]
[L46] COND TRUE i<N
[L48] EXPR c[i-1]
[L48] EXPR b[i-1]
[L48] c[i] = c[i-1] + b[i-1]
[L46] i++
VAL [N=3, a={4:0}, b={5:0}, c={-1:0}, i=3]
[L46] COND FALSE !(i<N)
VAL [N=3, a={4:0}, b={5:0}, c={-1:0}]
[L51] i=0
VAL [N=3, a={4:0}, b={5:0}, c={-1:0}, i=0]
[L51] COND TRUE i<N
[L53] EXPR c[i]
[L53] CALL __VERIFIER_assert(c[i] == i*i)
[L15] COND FALSE !(!(cond))
VAL [N=3]
[L53] RET __VERIFIER_assert(c[i] == i*i)
[L51] i++
VAL [N=3, a={4:0}, b={5:0}, c={-1:0}, i=1]
[L51] COND TRUE i<N
[L53] EXPR c[i]
[L53] CALL __VERIFIER_assert(c[i] == i*i)
[L15] COND FALSE !(!(cond))
VAL [N=3]
[L53] RET __VERIFIER_assert(c[i] == i*i)
[L51] i++
VAL [N=3, a={4:0}, b={5:0}, c={-1:0}, i=2]
[L51] COND TRUE i<N
[L53] EXPR c[i]
[L53] CALL __VERIFIER_assert(c[i] == i*i)
[L15] COND TRUE !(cond)
VAL [N=3]
[L15] reach_error()
VAL [N=3]
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 1 procedures, 18 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 4.0s, OverallIterations: 8, TraceHistogramMax: 3, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 90 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 90 mSDsluCounter, 206 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 133 mSDsCounter, 90 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 388 IncrementalHoareTripleChecker+Invalid, 478 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 90 mSolverCounterUnsat, 73 mSDtfsCounter, 388 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 168 GetRequests, 103 SyntacticMatches, 6 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26occurred in iteration=7, InterpolantAutomatonStates: 46, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 19 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 249 NumberOfCodeBlocks, 249 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 196 ConstructedInterpolants, 2 QuantifiedInterpolants, 1171 SizeOfPredicates, 27 NumberOfNonLiveVariables, 573 ConjunctsInSsa, 72 ConjunctsInUnsatCore, 12 InterpolantComputations, 4 PerfectInterpolantSequences, 33/51 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available
RESULT: Ultimate proved your program to be incorrect!
[2024-10-12 15:05:43,400 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0
Received shutdown request...
--- End real Ultimate output ---
Execution finished normally
Writing output log to file Ultimate.log
Writing human readable error path to file UltimateCounterExample.errorpath
Result:
FALSE