./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/ps4-ll_valuebound20.c --full-output --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --witnessprinter.generate.graphml.witnesses false --architecture 32bit
--------------------------------------------------------------------------------
Checking for ERROR reachability
Using default analysis
Version de325976
Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/certificate-witnesses-artifact/automizer/data/config -Xmx15G -Xms4m -jar /storage/repos/certificate-witnesses-artifact/automizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/certificate-witnesses-artifact/automizer/data -tc /storage/repos/certificate-witnesses-artifact/automizer/config/AutomizerReach.xml -i ../sv-benchmarks/c/nla-digbench-scaling/ps4-ll_valuebound20.c -s /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/certificate-witnesses-artifact/automizer --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 1fbe6596ea58bb65874b731661e9f9f596a91893af06dcebaa497157579c7f46 --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --witnessprinter.generate.graphml.witnesses false
--- Real Ultimate output ---
This is Ultimate 0.2.4-tmp.dk.referee-eval-de32597-m
[2024-09-18 16:34:07,241 INFO L188 SettingsManager]: Resetting all preferences to default values...
[2024-09-18 16:34:07,298 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf
[2024-09-18 16:34:07,303 WARN L101 SettingsManager]: Preference file contains the following unknown settings:
[2024-09-18 16:34:07,304 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2024-09-18 16:34:07,326 INFO L130 SettingsManager]: Preferences different from defaults after loading the file:
[2024-09-18 16:34:07,326 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2024-09-18 16:34:07,327 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2024-09-18 16:34:07,327 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2024-09-18 16:34:07,330 INFO L153 SettingsManager]: * Use memory slicer=true
[2024-09-18 16:34:07,330 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2024-09-18 16:34:07,330 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2024-09-18 16:34:07,331 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2024-09-18 16:34:07,331 INFO L153 SettingsManager]: * Create parallel compositions if possible=false
[2024-09-18 16:34:07,331 INFO L153 SettingsManager]: * Use SBE=true
[2024-09-18 16:34:07,331 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2024-09-18 16:34:07,332 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2024-09-18 16:34:07,332 INFO L153 SettingsManager]: * sizeof long=4
[2024-09-18 16:34:07,332 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true
[2024-09-18 16:34:07,332 INFO L153 SettingsManager]: * sizeof POINTER=4
[2024-09-18 16:34:07,332 INFO L153 SettingsManager]: * Check division by zero=IGNORE
[2024-09-18 16:34:07,334 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2024-09-18 16:34:07,334 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2024-09-18 16:34:07,335 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2024-09-18 16:34:07,336 INFO L153 SettingsManager]: * Allow undefined functions=false
[2024-09-18 16:34:07,336 INFO L153 SettingsManager]: * sizeof long double=12
[2024-09-18 16:34:07,336 INFO L153 SettingsManager]: * Check if freed pointer was valid=false
[2024-09-18 16:34:07,336 INFO L153 SettingsManager]: * Use constant arrays=true
[2024-09-18 16:34:07,337 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2024-09-18 16:34:07,337 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements
[2024-09-18 16:34:07,337 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true
[2024-09-18 16:34:07,337 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode
[2024-09-18 16:34:07,338 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-09-18 16:34:07,338 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2024-09-18 16:34:07,339 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2024-09-18 16:34:07,339 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads
[2024-09-18 16:34:07,339 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL
[2024-09-18 16:34:07,339 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2024-09-18 16:34:07,340 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false
[2024-09-18 16:34:07,340 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET
[2024-09-18 16:34:07,340 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO
[2024-09-18 16:34:07,341 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode
[2024-09-18 16:34:07,341 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/certificate-witnesses-artifact/automizer/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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) )
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1fbe6596ea58bb65874b731661e9f9f596a91893af06dcebaa497157579c7f46
Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Generate GraphML witnesses -> false
[2024-09-18 16:34:07,531 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2024-09-18 16:34:07,550 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2024-09-18 16:34:07,553 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2024-09-18 16:34:07,554 INFO L270 PluginConnector]: Initializing CDTParser...
[2024-09-18 16:34:07,554 INFO L274 PluginConnector]: CDTParser initialized
[2024-09-18 16:34:07,555 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/nla-digbench-scaling/ps4-ll_valuebound20.c
[2024-09-18 16:34:08,766 INFO L533 CDTParser]: Created temporary CDT project at NULL
[2024-09-18 16:34:08,911 INFO L384 CDTParser]: Found 1 translation units.
[2024-09-18 16:34:08,911 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/ps4-ll_valuebound20.c
[2024-09-18 16:34:08,922 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/b5a34a8c7/88c242607eed452285c4844a268d510a/FLAG286bfe948
[2024-09-18 16:34:08,933 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/b5a34a8c7/88c242607eed452285c4844a268d510a
[2024-09-18 16:34:08,935 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2024-09-18 16:34:08,936 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements.
[2024-09-18 16:34:08,938 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2024-09-18 16:34:08,938 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2024-09-18 16:34:08,942 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized
[2024-09-18 16:34:08,942 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 04:34:08" (1/1) ...
[2024-09-18 16:34:08,943 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6367a9ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 04:34:08, skipping insertion in model container
[2024-09-18 16:34:08,943 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 04:34:08" (1/1) ...
[2024-09-18 16:34:08,957 INFO L175 MainTranslator]: Built tables and reachable declarations
[2024-09-18 16:34:09,099 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/ps4-ll_valuebound20.c[458,471]
[2024-09-18 16:34:09,117 INFO L210 PostProcessor]: Analyzing one entry point: main
[2024-09-18 16:34:09,130 INFO L200 MainTranslator]: Completed pre-run
[2024-09-18 16:34:09,155 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/ps4-ll_valuebound20.c[458,471]
[2024-09-18 16:34:09,160 INFO L210 PostProcessor]: Analyzing one entry point: main
[2024-09-18 16:34:09,173 INFO L204 MainTranslator]: Completed translation
[2024-09-18 16:34:09,174 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 04:34:09 WrapperNode
[2024-09-18 16:34:09,174 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2024-09-18 16:34:09,175 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2024-09-18 16:34:09,175 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner...
[2024-09-18 16:34:09,175 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized
[2024-09-18 16:34:09,180 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 04:34:09" (1/1) ...
[2024-09-18 16:34:09,190 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 04:34:09" (1/1) ...
[2024-09-18 16:34:09,195 INFO L138 Inliner]: procedures = 14, calls = 11, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0
[2024-09-18 16:34:09,195 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2024-09-18 16:34:09,196 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2024-09-18 16:34:09,196 INFO L270 PluginConnector]: Initializing Boogie Preprocessor...
[2024-09-18 16:34:09,196 INFO L274 PluginConnector]: Boogie Preprocessor initialized
[2024-09-18 16:34:09,204 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 04:34:09" (1/1) ...
[2024-09-18 16:34:09,204 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 04:34:09" (1/1) ...
[2024-09-18 16:34:09,205 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 04:34:09" (1/1) ...
[2024-09-18 16:34:09,217 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0].
[2024-09-18 16:34:09,218 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 04:34:09" (1/1) ...
[2024-09-18 16:34:09,218 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 04:34:09" (1/1) ...
[2024-09-18 16:34:09,219 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 04:34:09" (1/1) ...
[2024-09-18 16:34:09,223 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 04:34:09" (1/1) ...
[2024-09-18 16:34:09,223 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 04:34:09" (1/1) ...
[2024-09-18 16:34:09,224 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 04:34:09" (1/1) ...
[2024-09-18 16:34:09,226 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2024-09-18 16:34:09,227 INFO L112 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2024-09-18 16:34:09,229 INFO L270 PluginConnector]: Initializing RCFGBuilder...
[2024-09-18 16:34:09,229 INFO L274 PluginConnector]: RCFGBuilder initialized
[2024-09-18 16:34:09,229 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 04:34:09" (1/1) ...
[2024-09-18 16:34:09,234 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-09-18 16:34:09,241 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3
[2024-09-18 16:34:09,255 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null)
[2024-09-18 16:34:09,258 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process
[2024-09-18 16:34:09,290 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2024-09-18 16:34:09,290 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2024-09-18 16:34:09,290 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2024-09-18 16:34:09,290 INFO L130 BoogieDeclarations]: Found specification of procedure main
[2024-09-18 16:34:09,290 INFO L138 BoogieDeclarations]: Found implementation of procedure main
[2024-09-18 16:34:09,290 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0
[2024-09-18 16:34:09,290 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2024-09-18 16:34:09,290 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2024-09-18 16:34:09,290 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2024-09-18 16:34:09,291 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2024-09-18 16:34:09,291 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert
[2024-09-18 16:34:09,291 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert
[2024-09-18 16:34:09,342 INFO L242 CfgBuilder]: Building ICFG
[2024-09-18 16:34:09,343 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation
[2024-09-18 16:34:09,442 INFO L? ?]: Removed 5 outVars from TransFormulas that were not future-live.
[2024-09-18 16:34:09,443 INFO L291 CfgBuilder]: Performing block encoding
[2024-09-18 16:34:09,458 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2024-09-18 16:34:09,458 INFO L318 CfgBuilder]: Removed 1 assume(true) statements.
[2024-09-18 16:34:09,458 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 04:34:09 BoogieIcfgContainer
[2024-09-18 16:34:09,458 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2024-09-18 16:34:09,460 INFO L112 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2024-09-18 16:34:09,460 INFO L270 PluginConnector]: Initializing TraceAbstraction...
[2024-09-18 16:34:09,462 INFO L274 PluginConnector]: TraceAbstraction initialized
[2024-09-18 16:34:09,462 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.09 04:34:08" (1/3) ...
[2024-09-18 16:34:09,463 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f7c3e0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 04:34:09, skipping insertion in model container
[2024-09-18 16:34:09,463 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 04:34:09" (2/3) ...
[2024-09-18 16:34:09,463 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f7c3e0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 04:34:09, skipping insertion in model container
[2024-09-18 16:34:09,463 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 04:34:09" (3/3) ...
[2024-09-18 16:34:09,464 INFO L112 eAbstractionObserver]: Analyzing ICFG ps4-ll_valuebound20.c
[2024-09-18 16:34:09,475 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2024-09-18 16:34:09,476 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2024-09-18 16:34:09,527 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2024-09-18 16:34:09,534 INFO L336 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=All, 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;@3277fdc2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-09-18 16:34:09,535 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2024-09-18 16:34:09,539 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 15 states have internal predecessors, (20), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6)
[2024-09-18 16:34:09,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17
[2024-09-18 16:34:09,545 INFO L208 NwaCegarLoop]: Found error trace
[2024-09-18 16:34:09,546 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-09-18 16:34:09,546 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-09-18 16:34:09,551 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2024-09-18 16:34:09,551 INFO L85 PathProgramCache]: Analyzing trace with hash 1238311395, now seen corresponding path program 1 times
[2024-09-18 16:34:09,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-09-18 16:34:09,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481641811]
[2024-09-18 16:34:09,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-09-18 16:34:09,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-09-18 16:34:09,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-18 16:34:09,670 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2024-09-18 16:34:09,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-18 16:34:09,681 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5
[2024-09-18 16:34:09,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-18 16:34:09,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-09-18 16:34:09,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-09-18 16:34:09,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481641811]
[2024-09-18 16:34:09,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481641811] provided 1 perfect and 0 imperfect interpolant sequences
[2024-09-18 16:34:09,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-09-18 16:34:09,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2024-09-18 16:34:09,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992170645]
[2024-09-18 16:34:09,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-09-18 16:34:09,695 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2024-09-18 16:34:09,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-09-18 16:34:09,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2024-09-18 16:34:09,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2024-09-18 16:34:09,714 INFO L87 Difference]: Start difference. First operand has 26 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 15 states have internal predecessors, (20), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2)
[2024-09-18 16:34:09,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-09-18 16:34:09,732 INFO L93 Difference]: Finished difference Result 44 states and 58 transitions.
[2024-09-18 16:34:09,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states.
[2024-09-18 16:34:09,734 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 16
[2024-09-18 16:34:09,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-09-18 16:34:09,739 INFO L225 Difference]: With dead ends: 44
[2024-09-18 16:34:09,739 INFO L226 Difference]: Without dead ends: 22
[2024-09-18 16:34:09,741 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2024-09-18 16:34:09,743 INFO L434 NwaCegarLoop]: 26 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-09-18 16:34:09,744 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 26 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-09-18 16:34:09,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states.
[2024-09-18 16:34:09,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22.
[2024-09-18 16:34:09,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 13 states have internal predecessors, (14), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4)
[2024-09-18 16:34:09,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions.
[2024-09-18 16:34:09,767 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 16
[2024-09-18 16:34:09,767 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-09-18 16:34:09,767 INFO L474 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions.
[2024-09-18 16:34:09,767 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2)
[2024-09-18 16:34:09,768 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2024-09-18 16:34:09,768 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions.
[2024-09-18 16:34:09,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17
[2024-09-18 16:34:09,768 INFO L208 NwaCegarLoop]: Found error trace
[2024-09-18 16:34:09,769 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-09-18 16:34:09,769 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2024-09-18 16:34:09,769 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-09-18 16:34:09,769 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2024-09-18 16:34:09,769 INFO L85 PathProgramCache]: Analyzing trace with hash 1910922015, now seen corresponding path program 1 times
[2024-09-18 16:34:09,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-09-18 16:34:09,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148146750]
[2024-09-18 16:34:09,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-09-18 16:34:09,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-09-18 16:34:09,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown
[2024-09-18 16:34:09,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [137078793]
[2024-09-18 16:34:09,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-09-18 16:34:09,797 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-09-18 16:34:09,797 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3
[2024-09-18 16:34:09,804 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-09-18 16:34:09,808 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2024-09-18 16:34:09,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-18 16:34:09,875 INFO L262 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 7 conjuncts are in the unsatisfiable core
[2024-09-18 16:34:09,880 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2024-09-18 16:34:09,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-09-18 16:34:09,961 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-09-18 16:34:09,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-09-18 16:34:09,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148146750]
[2024-09-18 16:34:09,961 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2024-09-18 16:34:09,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [137078793]
[2024-09-18 16:34:09,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [137078793] provided 1 perfect and 0 imperfect interpolant sequences
[2024-09-18 16:34:09,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-09-18 16:34:09,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2024-09-18 16:34:09,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775964931]
[2024-09-18 16:34:09,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-09-18 16:34:09,964 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2024-09-18 16:34:09,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-09-18 16:34:09,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2024-09-18 16:34:09,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2024-09-18 16:34:09,965 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2)
[2024-09-18 16:34:10,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-09-18 16:34:10,017 INFO L93 Difference]: Finished difference Result 33 states and 37 transitions.
[2024-09-18 16:34:10,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2024-09-18 16:34:10,019 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 16
[2024-09-18 16:34:10,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-09-18 16:34:10,020 INFO L225 Difference]: With dead ends: 33
[2024-09-18 16:34:10,020 INFO L226 Difference]: Without dead ends: 29
[2024-09-18 16:34:10,020 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2024-09-18 16:34:10,021 INFO L434 NwaCegarLoop]: 18 mSDtfsCounter, 4 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-09-18 16:34:10,021 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 69 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-09-18 16:34:10,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states.
[2024-09-18 16:34:10,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29.
[2024-09-18 16:34:10,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 18 states have internal predecessors, (19), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5)
[2024-09-18 16:34:10,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions.
[2024-09-18 16:34:10,030 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 16
[2024-09-18 16:34:10,030 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-09-18 16:34:10,031 INFO L474 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions.
[2024-09-18 16:34:10,031 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2)
[2024-09-18 16:34:10,031 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2024-09-18 16:34:10,032 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions.
[2024-09-18 16:34:10,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24
[2024-09-18 16:34:10,032 INFO L208 NwaCegarLoop]: Found error trace
[2024-09-18 16:34:10,032 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-09-18 16:34:10,045 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0
[2024-09-18 16:34:10,234 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-09-18 16:34:10,235 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-09-18 16:34:10,235 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2024-09-18 16:34:10,235 INFO L85 PathProgramCache]: Analyzing trace with hash 306700420, now seen corresponding path program 1 times
[2024-09-18 16:34:10,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-09-18 16:34:10,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549194445]
[2024-09-18 16:34:10,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-09-18 16:34:10,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-09-18 16:34:10,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown
[2024-09-18 16:34:10,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1474692844]
[2024-09-18 16:34:10,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-09-18 16:34:10,272 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-09-18 16:34:10,273 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3
[2024-09-18 16:34:10,274 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-09-18 16:34:10,275 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2024-09-18 16:34:10,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-18 16:34:10,320 INFO L262 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 11 conjuncts are in the unsatisfiable core
[2024-09-18 16:34:10,322 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2024-09-18 16:34:10,378 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-09-18 16:34:10,379 INFO L327 TraceCheckSpWp]: Computing backward predicates...
[2024-09-18 16:34:10,462 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2024-09-18 16:34:10,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-09-18 16:34:10,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549194445]
[2024-09-18 16:34:10,462 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2024-09-18 16:34:10,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1474692844]
[2024-09-18 16:34:10,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1474692844] provided 1 perfect and 1 imperfect interpolant sequences
[2024-09-18 16:34:10,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2024-09-18 16:34:10,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 7
[2024-09-18 16:34:10,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533916562]
[2024-09-18 16:34:10,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-09-18 16:34:10,463 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2024-09-18 16:34:10,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-09-18 16:34:10,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2024-09-18 16:34:10,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42
[2024-09-18 16:34:10,464 INFO L87 Difference]: Start difference. First operand 29 states and 31 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3)
[2024-09-18 16:34:10,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-09-18 16:34:10,505 INFO L93 Difference]: Finished difference Result 35 states and 36 transitions.
[2024-09-18 16:34:10,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2024-09-18 16:34:10,505 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 23
[2024-09-18 16:34:10,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-09-18 16:34:10,506 INFO L225 Difference]: With dead ends: 35
[2024-09-18 16:34:10,506 INFO L226 Difference]: Without dead ends: 30
[2024-09-18 16:34:10,507 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 38 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56
[2024-09-18 16:34:10,507 INFO L434 NwaCegarLoop]: 19 mSDtfsCounter, 4 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-09-18 16:34:10,508 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 68 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-09-18 16:34:10,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states.
[2024-09-18 16:34:10,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30.
[2024-09-18 16:34:10,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 19 states have (on average 1.0526315789473684) internal successors, (20), 19 states have internal predecessors, (20), 6 states have call successors, (6), 6 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4)
[2024-09-18 16:34:10,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 30 transitions.
[2024-09-18 16:34:10,520 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 30 transitions. Word has length 23
[2024-09-18 16:34:10,520 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-09-18 16:34:10,520 INFO L474 AbstractCegarLoop]: Abstraction has 30 states and 30 transitions.
[2024-09-18 16:34:10,521 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3)
[2024-09-18 16:34:10,521 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2024-09-18 16:34:10,521 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 30 transitions.
[2024-09-18 16:34:10,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30
[2024-09-18 16:34:10,522 INFO L208 NwaCegarLoop]: Found error trace
[2024-09-18 16:34:10,522 INFO L216 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-09-18 16:34:10,535 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0
[2024-09-18 16:34:10,725 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-09-18 16:34:10,726 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-09-18 16:34:10,727 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2024-09-18 16:34:10,727 INFO L85 PathProgramCache]: Analyzing trace with hash 749725687, now seen corresponding path program 1 times
[2024-09-18 16:34:10,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-09-18 16:34:10,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590842857]
[2024-09-18 16:34:10,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-09-18 16:34:10,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-09-18 16:34:10,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown
[2024-09-18 16:34:10,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1728415727]
[2024-09-18 16:34:10,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-09-18 16:34:10,749 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-09-18 16:34:10,749 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3
[2024-09-18 16:34:10,752 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-09-18 16:34:10,754 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2024-09-18 16:34:10,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-18 16:34:10,789 INFO L262 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 12 conjuncts are in the unsatisfiable core
[2024-09-18 16:34:10,790 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2024-09-18 16:34:10,885 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2024-09-18 16:34:10,887 INFO L327 TraceCheckSpWp]: Computing backward predicates...
[2024-09-18 16:34:10,988 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2024-09-18 16:34:10,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-09-18 16:34:10,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590842857]
[2024-09-18 16:34:10,989 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2024-09-18 16:34:10,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1728415727]
[2024-09-18 16:34:10,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1728415727] provided 0 perfect and 2 imperfect interpolant sequences
[2024-09-18 16:34:10,989 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-09-18 16:34:10,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10
[2024-09-18 16:34:10,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969535551]
[2024-09-18 16:34:10,989 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-09-18 16:34:10,989 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 10 states
[2024-09-18 16:34:10,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-09-18 16:34:10,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2024-09-18 16:34:10,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90
[2024-09-18 16:34:10,990 INFO L87 Difference]: Start difference. First operand 30 states and 30 transitions. Second operand has 10 states, 8 states have (on average 2.625) internal successors, (21), 9 states have internal predecessors, (21), 7 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6)
[2024-09-18 16:34:11,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-09-18 16:34:11,079 INFO L93 Difference]: Finished difference Result 45 states and 50 transitions.
[2024-09-18 16:34:11,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states.
[2024-09-18 16:34:11,080 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 2.625) internal successors, (21), 9 states have internal predecessors, (21), 7 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) Word has length 29
[2024-09-18 16:34:11,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-09-18 16:34:11,081 INFO L225 Difference]: With dead ends: 45
[2024-09-18 16:34:11,081 INFO L226 Difference]: Without dead ends: 39
[2024-09-18 16:34:11,081 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 47 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156
[2024-09-18 16:34:11,082 INFO L434 NwaCegarLoop]: 22 mSDtfsCounter, 1 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-09-18 16:34:11,082 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 98 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-09-18 16:34:11,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states.
[2024-09-18 16:34:11,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39.
[2024-09-18 16:34:11,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 25 states have (on average 1.04) internal successors, (26), 25 states have internal predecessors, (26), 9 states have call successors, (9), 6 states have call predecessors, (9), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7)
[2024-09-18 16:34:11,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions.
[2024-09-18 16:34:11,093 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 29
[2024-09-18 16:34:11,093 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-09-18 16:34:11,093 INFO L474 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions.
[2024-09-18 16:34:11,093 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 2.625) internal successors, (21), 9 states have internal predecessors, (21), 7 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6)
[2024-09-18 16:34:11,094 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2024-09-18 16:34:11,094 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions.
[2024-09-18 16:34:11,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51
[2024-09-18 16:34:11,095 INFO L208 NwaCegarLoop]: Found error trace
[2024-09-18 16:34:11,095 INFO L216 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-09-18 16:34:11,108 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0
[2024-09-18 16:34:11,299 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-09-18 16:34:11,300 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-09-18 16:34:11,300 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2024-09-18 16:34:11,300 INFO L85 PathProgramCache]: Analyzing trace with hash 608187154, now seen corresponding path program 2 times
[2024-09-18 16:34:11,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-09-18 16:34:11,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373203361]
[2024-09-18 16:34:11,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-09-18 16:34:11,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-09-18 16:34:11,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown
[2024-09-18 16:34:11,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [907625814]
[2024-09-18 16:34:11,333 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2024-09-18 16:34:11,333 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-09-18 16:34:11,333 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3
[2024-09-18 16:34:11,336 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-09-18 16:34:11,337 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2024-09-18 16:34:11,375 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2024-09-18 16:34:11,375 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-09-18 16:34:11,376 INFO L262 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 34 conjuncts are in the unsatisfiable core
[2024-09-18 16:34:11,378 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2024-09-18 16:34:11,510 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 9 proven. 43 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked.
[2024-09-18 16:34:11,510 INFO L327 TraceCheckSpWp]: Computing backward predicates...
[2024-09-18 16:34:11,788 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 9 proven. 43 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked.
[2024-09-18 16:34:11,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-09-18 16:34:11,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373203361]
[2024-09-18 16:34:11,791 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2024-09-18 16:34:11,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [907625814]
[2024-09-18 16:34:11,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [907625814] provided 0 perfect and 2 imperfect interpolant sequences
[2024-09-18 16:34:11,791 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-09-18 16:34:11,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 22
[2024-09-18 16:34:11,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874014302]
[2024-09-18 16:34:11,792 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-09-18 16:34:11,792 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 22 states
[2024-09-18 16:34:11,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-09-18 16:34:11,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants.
[2024-09-18 16:34:11,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=381, Unknown=0, NotChecked=0, Total=462
[2024-09-18 16:34:11,793 INFO L87 Difference]: Start difference. First operand 39 states and 42 transitions. Second operand has 22 states, 20 states have (on average 2.0) internal successors, (40), 19 states have internal predecessors, (40), 13 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (12), 11 states have call predecessors, (12), 11 states have call successors, (12)
[2024-09-18 16:34:12,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-09-18 16:34:12,045 INFO L93 Difference]: Finished difference Result 43 states and 48 transitions.
[2024-09-18 16:34:12,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states.
[2024-09-18 16:34:12,045 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 20 states have (on average 2.0) internal successors, (40), 19 states have internal predecessors, (40), 13 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (12), 11 states have call predecessors, (12), 11 states have call successors, (12) Word has length 50
[2024-09-18 16:34:12,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-09-18 16:34:12,046 INFO L225 Difference]: With dead ends: 43
[2024-09-18 16:34:12,046 INFO L226 Difference]: Without dead ends: 0
[2024-09-18 16:34:12,046 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=139, Invalid=617, Unknown=0, NotChecked=0, Total=756
[2024-09-18 16:34:12,047 INFO L434 NwaCegarLoop]: 22 mSDtfsCounter, 5 mSDsluCounter, 240 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 262 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-09-18 16:34:12,047 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 262 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-09-18 16:34:12,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states.
[2024-09-18 16:34:12,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0.
[2024-09-18 16:34:12,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-09-18 16:34:12,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions.
[2024-09-18 16:34:12,048 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 50
[2024-09-18 16:34:12,048 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-09-18 16:34:12,048 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions.
[2024-09-18 16:34:12,048 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 20 states have (on average 2.0) internal successors, (40), 19 states have internal predecessors, (40), 13 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (12), 11 states have call predecessors, (12), 11 states have call successors, (12)
[2024-09-18 16:34:12,049 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2024-09-18 16:34:12,049 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions.
[2024-09-18 16:34:12,049 INFO L282 IsEmpty]: Finished isEmpty. No accepting run.
[2024-09-18 16:34:12,052 INFO L785 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining)
[2024-09-18 16:34:12,065 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0
[2024-09-18 16:34:12,256 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-09-18 16:34:12,259 INFO L408 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1]
[2024-09-18 16:34:12,261 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.
[2024-09-18 16:34:12,495 INFO L165 ceAbstractionStarter]: Computing trace abstraction results
[2024-09-18 16:34:12,512 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.09 04:34:12 BoogieIcfgContainer
[2024-09-18 16:34:12,512 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2024-09-18 16:34:12,512 INFO L112 PluginConnector]: ------------------------Witness Printer----------------------------
[2024-09-18 16:34:12,512 INFO L270 PluginConnector]: Initializing Witness Printer...
[2024-09-18 16:34:12,512 INFO L274 PluginConnector]: Witness Printer initialized
[2024-09-18 16:34:12,512 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 04:34:09" (3/4) ...
[2024-09-18 16:34:12,515 INFO L139 WitnessPrinter]: Generating witness for correct program
[2024-09-18 16:34:12,556 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.yml
[2024-09-18 16:34:12,556 INFO L131 PluginConnector]: ------------------------ END Witness Printer----------------------------
[2024-09-18 16:34:12,556 INFO L158 Benchmark]: Toolchain (without parser) took 3620.14ms. Allocated memory was 153.1MB in the beginning and 205.5MB in the end (delta: 52.4MB). Free memory was 82.0MB in the beginning and 96.3MB in the end (delta: -14.3MB). Peak memory consumption was 38.5MB. Max. memory is 16.1GB.
[2024-09-18 16:34:12,556 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 153.1MB. Free memory was 106.4MB in the beginning and 106.3MB in the end (delta: 139.8kB). There was no memory consumed. Max. memory is 16.1GB.
[2024-09-18 16:34:12,559 INFO L158 Benchmark]: CACSL2BoogieTranslator took 236.12ms. Allocated memory is still 153.1MB. Free memory was 81.9MB in the beginning and 123.1MB in the end (delta: -41.2MB). Peak memory consumption was 16.5MB. Max. memory is 16.1GB.
[2024-09-18 16:34:12,559 INFO L158 Benchmark]: Boogie Procedure Inliner took 20.89ms. Allocated memory is still 153.1MB. Free memory was 123.0MB in the beginning and 125.5MB in the end (delta: -2.5MB). Peak memory consumption was 2.4MB. Max. memory is 16.1GB.
[2024-09-18 16:34:12,560 INFO L158 Benchmark]: Boogie Preprocessor took 30.67ms. Allocated memory is still 153.1MB. Free memory was 125.5MB in the beginning and 123.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
[2024-09-18 16:34:12,560 INFO L158 Benchmark]: RCFGBuilder took 231.31ms. Allocated memory is still 153.1MB. Free memory was 123.4MB in the beginning and 111.7MB in the end (delta: 11.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB.
[2024-09-18 16:34:12,560 INFO L158 Benchmark]: TraceAbstraction took 3052.05ms. Allocated memory was 153.1MB in the beginning and 205.5MB in the end (delta: 52.4MB). Free memory was 110.8MB in the beginning and 98.4MB in the end (delta: 12.4MB). Peak memory consumption was 63.6MB. Max. memory is 16.1GB.
[2024-09-18 16:34:12,561 INFO L158 Benchmark]: Witness Printer took 43.70ms. Allocated memory is still 205.5MB. Free memory was 98.4MB in the beginning and 96.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
[2024-09-18 16:34:12,562 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.19ms. Allocated memory is still 153.1MB. Free memory was 106.4MB in the beginning and 106.3MB in the end (delta: 139.8kB). There was no memory consumed. Max. memory is 16.1GB.
* CACSL2BoogieTranslator took 236.12ms. Allocated memory is still 153.1MB. Free memory was 81.9MB in the beginning and 123.1MB in the end (delta: -41.2MB). Peak memory consumption was 16.5MB. Max. memory is 16.1GB.
* Boogie Procedure Inliner took 20.89ms. Allocated memory is still 153.1MB. Free memory was 123.0MB in the beginning and 125.5MB in the end (delta: -2.5MB). Peak memory consumption was 2.4MB. Max. memory is 16.1GB.
* Boogie Preprocessor took 30.67ms. Allocated memory is still 153.1MB. Free memory was 125.5MB in the beginning and 123.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
* RCFGBuilder took 231.31ms. Allocated memory is still 153.1MB. Free memory was 123.4MB in the beginning and 111.7MB in the end (delta: 11.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB.
* TraceAbstraction took 3052.05ms. Allocated memory was 153.1MB in the beginning and 205.5MB in the end (delta: 52.4MB). Free memory was 110.8MB in the beginning and 98.4MB in the end (delta: 12.4MB). Peak memory consumption was 63.6MB. Max. memory is 16.1GB.
* Witness Printer took 43.70ms. Allocated memory is still 205.5MB. Free memory was 98.4MB in the beginning and 96.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- StatisticsResult: ErrorAutomatonStatistics
NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0
- PositiveResult [Line: 12]: a call to reach_error is unreachable
For all program executions holds that a call to reach_error is unreachable at this location
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 5 procedures, 26 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.8s, OverallIterations: 5, TraceHistogramMax: 6, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 18 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 14 mSDsluCounter, 523 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 416 mSDsCounter, 13 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 294 IncrementalHoareTripleChecker+Invalid, 307 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 13 mSolverCounterUnsat, 107 mSDtfsCounter, 294 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 234 GetRequests, 183 SyntacticMatches, 4 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=39occurred in iteration=4, InterpolantAutomatonStates: 36, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 252 NumberOfCodeBlocks, 252 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 228 ConstructedInterpolants, 0 QuantifiedInterpolants, 873 SizeOfPredicates, 7 NumberOfNonLiveVariables, 342 ConjunctsInSsa, 64 ConjunctsInUnsatCore, 8 InterpolantComputations, 3 PerfectInterpolantSequences, 96/190 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available
- AllSpecificationsHoldResult: All specifications hold
1 specifications checked. All of them hold
- InvariantResult [Line: 27]: Loop Invariant
Derived loop invariant: (((((c + ((__int128) c * y)) == (y + ((__int128) y * y))) && ((((__int128) c * 2) + ((__int128) c * y)) == (((__int128) y * 2) + ((__int128) y * y)))) && (((((((__int128) y * y) * y) * y) + ((__int128) y * y)) + ((((__int128) y * y) * y) * 2)) == ((__int128) x * 4))) && ((c < k) || (((__int128) y * y) == ((__int128) k * y))))
- ProcedureContractResult [Line: 9]: Procedure Contract for __VERIFIER_assert
Derived contract for procedure __VERIFIER_assert. Requires: (1 <= \old(cond)) Ensures: (1 <= \old(cond))
RESULT: Ultimate proved your program to be correct!
[2024-09-18 16:34:12,575 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/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
Result:
TRUE