./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/ps4-ll_valuebound10.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 27b49876
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_valuebound10.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 53086523abe0dc699ccd28b0916f17f8825d4641577f06835b9d81e9579a444f --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-27b4987-m
[2024-09-21 12:22:06,644 INFO L188 SettingsManager]: Resetting all preferences to default values...
[2024-09-21 12:22:06,744 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf
[2024-09-21 12:22:06,751 WARN L101 SettingsManager]: Preference file contains the following unknown settings:
[2024-09-21 12:22:06,752 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2024-09-21 12:22:06,777 INFO L130 SettingsManager]: Preferences different from defaults after loading the file:
[2024-09-21 12:22:06,777 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2024-09-21 12:22:06,778 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2024-09-21 12:22:06,778 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2024-09-21 12:22:06,779 INFO L153 SettingsManager]: * Use memory slicer=true
[2024-09-21 12:22:06,780 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2024-09-21 12:22:06,780 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2024-09-21 12:22:06,781 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2024-09-21 12:22:06,783 INFO L153 SettingsManager]: * Create parallel compositions if possible=false
[2024-09-21 12:22:06,783 INFO L153 SettingsManager]: * Use SBE=true
[2024-09-21 12:22:06,783 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2024-09-21 12:22:06,784 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2024-09-21 12:22:06,784 INFO L153 SettingsManager]: * sizeof long=4
[2024-09-21 12:22:06,784 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true
[2024-09-21 12:22:06,784 INFO L153 SettingsManager]: * sizeof POINTER=4
[2024-09-21 12:22:06,785 INFO L153 SettingsManager]: * Check division by zero=IGNORE
[2024-09-21 12:22:06,788 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2024-09-21 12:22:06,788 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2024-09-21 12:22:06,789 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2024-09-21 12:22:06,789 INFO L153 SettingsManager]: * Allow undefined functions=false
[2024-09-21 12:22:06,789 INFO L153 SettingsManager]: * sizeof long double=12
[2024-09-21 12:22:06,789 INFO L153 SettingsManager]: * Check if freed pointer was valid=false
[2024-09-21 12:22:06,790 INFO L153 SettingsManager]: * Use constant arrays=true
[2024-09-21 12:22:06,790 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2024-09-21 12:22:06,790 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements
[2024-09-21 12:22:06,790 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true
[2024-09-21 12:22:06,791 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode
[2024-09-21 12:22:06,791 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-09-21 12:22:06,791 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2024-09-21 12:22:06,791 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2024-09-21 12:22:06,792 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads
[2024-09-21 12:22:06,792 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL
[2024-09-21 12:22:06,792 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2024-09-21 12:22:06,792 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false
[2024-09-21 12:22:06,793 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET
[2024-09-21 12:22:06,793 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO
[2024-09-21 12:22:06,793 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode
[2024-09-21 12:22:06,794 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) )
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 53086523abe0dc699ccd28b0916f17f8825d4641577f06835b9d81e9579a444f
Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Generate GraphML witnesses -> false
[2024-09-21 12:22:07,031 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2024-09-21 12:22:07,056 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2024-09-21 12:22:07,058 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2024-09-21 12:22:07,059 INFO L270 PluginConnector]: Initializing CDTParser...
[2024-09-21 12:22:07,060 INFO L274 PluginConnector]: CDTParser initialized
[2024-09-21 12:22:07,060 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/nla-digbench-scaling/ps4-ll_valuebound10.c
[2024-09-21 12:22:08,417 INFO L533 CDTParser]: Created temporary CDT project at NULL
[2024-09-21 12:22:08,603 INFO L384 CDTParser]: Found 1 translation units.
[2024-09-21 12:22:08,603 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/ps4-ll_valuebound10.c
[2024-09-21 12:22:08,612 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/541b6eee0/248e2168b78041729ac876722ae0d8d7/FLAG3c1b73213
[2024-09-21 12:22:08,629 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/541b6eee0/248e2168b78041729ac876722ae0d8d7
[2024-09-21 12:22:08,631 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2024-09-21 12:22:08,632 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements.
[2024-09-21 12:22:08,633 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2024-09-21 12:22:08,635 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2024-09-21 12:22:08,640 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized
[2024-09-21 12:22:08,641 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:22:08" (1/1) ...
[2024-09-21 12:22:08,642 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79e8d67a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:22:08, skipping insertion in model container
[2024-09-21 12:22:08,642 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:22:08" (1/1) ...
[2024-09-21 12:22:08,660 INFO L175 MainTranslator]: Built tables and reachable declarations
[2024-09-21 12:22:08,791 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_valuebound10.c[458,471]
[2024-09-21 12:22:08,819 INFO L210 PostProcessor]: Analyzing one entry point: main
[2024-09-21 12:22:08,829 INFO L200 MainTranslator]: Completed pre-run
[2024-09-21 12:22:08,840 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_valuebound10.c[458,471]
[2024-09-21 12:22:08,846 INFO L210 PostProcessor]: Analyzing one entry point: main
[2024-09-21 12:22:08,870 INFO L204 MainTranslator]: Completed translation
[2024-09-21 12:22:08,871 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:22:08 WrapperNode
[2024-09-21 12:22:08,871 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2024-09-21 12:22:08,872 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2024-09-21 12:22:08,872 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner...
[2024-09-21 12:22:08,873 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized
[2024-09-21 12:22:08,879 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:22:08" (1/1) ...
[2024-09-21 12:22:08,889 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:22:08" (1/1) ...
[2024-09-21 12:22:08,898 INFO L138 Inliner]: procedures = 14, calls = 11, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0
[2024-09-21 12:22:08,899 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2024-09-21 12:22:08,900 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2024-09-21 12:22:08,900 INFO L270 PluginConnector]: Initializing Boogie Preprocessor...
[2024-09-21 12:22:08,900 INFO L274 PluginConnector]: Boogie Preprocessor initialized
[2024-09-21 12:22:08,909 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:22:08" (1/1) ...
[2024-09-21 12:22:08,910 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:22:08" (1/1) ...
[2024-09-21 12:22:08,911 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:22:08" (1/1) ...
[2024-09-21 12:22:08,925 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].
[2024-09-21 12:22:08,926 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:22:08" (1/1) ...
[2024-09-21 12:22:08,926 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:22:08" (1/1) ...
[2024-09-21 12:22:08,928 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:22:08" (1/1) ...
[2024-09-21 12:22:08,933 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:22:08" (1/1) ...
[2024-09-21 12:22:08,933 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:22:08" (1/1) ...
[2024-09-21 12:22:08,935 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:22:08" (1/1) ...
[2024-09-21 12:22:08,936 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2024-09-21 12:22:08,938 INFO L112 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2024-09-21 12:22:08,938 INFO L270 PluginConnector]: Initializing RCFGBuilder...
[2024-09-21 12:22:08,939 INFO L274 PluginConnector]: RCFGBuilder initialized
[2024-09-21 12:22:08,939 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:22:08" (1/1) ...
[2024-09-21 12:22:08,944 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-09-21 12:22:08,955 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3
[2024-09-21 12:22:08,970 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)
[2024-09-21 12:22:08,973 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
[2024-09-21 12:22:09,017 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2024-09-21 12:22:09,017 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2024-09-21 12:22:09,017 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2024-09-21 12:22:09,017 INFO L130 BoogieDeclarations]: Found specification of procedure main
[2024-09-21 12:22:09,018 INFO L138 BoogieDeclarations]: Found implementation of procedure main
[2024-09-21 12:22:09,018 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0
[2024-09-21 12:22:09,018 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2024-09-21 12:22:09,019 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2024-09-21 12:22:09,020 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2024-09-21 12:22:09,020 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2024-09-21 12:22:09,020 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert
[2024-09-21 12:22:09,020 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert
[2024-09-21 12:22:09,073 INFO L242 CfgBuilder]: Building ICFG
[2024-09-21 12:22:09,074 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation
[2024-09-21 12:22:09,189 INFO L? ?]: Removed 5 outVars from TransFormulas that were not future-live.
[2024-09-21 12:22:09,192 INFO L291 CfgBuilder]: Performing block encoding
[2024-09-21 12:22:09,217 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2024-09-21 12:22:09,219 INFO L318 CfgBuilder]: Removed 1 assume(true) statements.
[2024-09-21 12:22:09,219 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:22:09 BoogieIcfgContainer
[2024-09-21 12:22:09,220 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2024-09-21 12:22:09,222 INFO L112 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2024-09-21 12:22:09,222 INFO L270 PluginConnector]: Initializing TraceAbstraction...
[2024-09-21 12:22:09,225 INFO L274 PluginConnector]: TraceAbstraction initialized
[2024-09-21 12:22:09,225 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 12:22:08" (1/3) ...
[2024-09-21 12:22:09,225 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5da30938 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:22:09, skipping insertion in model container
[2024-09-21 12:22:09,226 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:22:08" (2/3) ...
[2024-09-21 12:22:09,226 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5da30938 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:22:09, skipping insertion in model container
[2024-09-21 12:22:09,226 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:22:09" (3/3) ...
[2024-09-21 12:22:09,227 INFO L112 eAbstractionObserver]: Analyzing ICFG ps4-ll_valuebound10.c
[2024-09-21 12:22:09,239 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2024-09-21 12:22:09,239 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2024-09-21 12:22:09,288 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2024-09-21 12:22:09,296 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;@5e4d6ed7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-09-21 12:22:09,296 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2024-09-21 12:22:09,300 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)
[2024-09-21 12:22:09,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17
[2024-09-21 12:22:09,306 INFO L208 NwaCegarLoop]: Found error trace
[2024-09-21 12:22:09,307 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-09-21 12:22:09,307 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-09-21 12:22:09,312 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2024-09-21 12:22:09,312 INFO L85 PathProgramCache]: Analyzing trace with hash 1238311395, now seen corresponding path program 1 times
[2024-09-21 12:22:09,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-09-21 12:22:09,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137534026]
[2024-09-21 12:22:09,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-09-21 12:22:09,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-09-21 12:22:09,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-21 12:22:09,478 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2024-09-21 12:22:09,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-21 12:22:09,495 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5
[2024-09-21 12:22:09,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-21 12:22:09,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-09-21 12:22:09,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-09-21 12:22:09,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137534026]
[2024-09-21 12:22:09,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137534026] provided 1 perfect and 0 imperfect interpolant sequences
[2024-09-21 12:22:09,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-09-21 12:22:09,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2024-09-21 12:22:09,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637886278]
[2024-09-21 12:22:09,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-09-21 12:22:09,517 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2024-09-21 12:22:09,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-09-21 12:22:09,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2024-09-21 12:22:09,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2024-09-21 12:22:09,544 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)
[2024-09-21 12:22:09,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-09-21 12:22:09,571 INFO L93 Difference]: Finished difference Result 44 states and 58 transitions.
[2024-09-21 12:22:09,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states.
[2024-09-21 12:22:09,575 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
[2024-09-21 12:22:09,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-09-21 12:22:09,582 INFO L225 Difference]: With dead ends: 44
[2024-09-21 12:22:09,582 INFO L226 Difference]: Without dead ends: 22
[2024-09-21 12:22:09,586 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
[2024-09-21 12:22:09,589 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
[2024-09-21 12:22:09,590 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]
[2024-09-21 12:22:09,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states.
[2024-09-21 12:22:09,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22.
[2024-09-21 12:22:09,620 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)
[2024-09-21 12:22:09,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions.
[2024-09-21 12:22:09,622 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 16
[2024-09-21 12:22:09,622 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-09-21 12:22:09,623 INFO L474 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions.
[2024-09-21 12:22:09,623 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)
[2024-09-21 12:22:09,624 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2024-09-21 12:22:09,624 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions.
[2024-09-21 12:22:09,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17
[2024-09-21 12:22:09,625 INFO L208 NwaCegarLoop]: Found error trace
[2024-09-21 12:22:09,625 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-09-21 12:22:09,625 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2024-09-21 12:22:09,625 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-09-21 12:22:09,626 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2024-09-21 12:22:09,626 INFO L85 PathProgramCache]: Analyzing trace with hash 1910922015, now seen corresponding path program 1 times
[2024-09-21 12:22:09,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-09-21 12:22:09,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144534068]
[2024-09-21 12:22:09,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-09-21 12:22:09,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-09-21 12:22:09,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown
[2024-09-21 12:22:09,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1607945262]
[2024-09-21 12:22:09,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-09-21 12:22:09,654 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-09-21 12:22:09,654 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3
[2024-09-21 12:22:09,659 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)
[2024-09-21 12:22:09,660 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2024-09-21 12:22:09,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-21 12:22:09,723 INFO L262 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 7 conjuncts are in the unsatisfiable core
[2024-09-21 12:22:09,730 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2024-09-21 12:22:09,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-09-21 12:22:09,823 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-09-21 12:22:09,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-09-21 12:22:09,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144534068]
[2024-09-21 12:22:09,825 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2024-09-21 12:22:09,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1607945262]
[2024-09-21 12:22:09,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1607945262] provided 1 perfect and 0 imperfect interpolant sequences
[2024-09-21 12:22:09,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-09-21 12:22:09,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2024-09-21 12:22:09,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024261480]
[2024-09-21 12:22:09,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-09-21 12:22:09,829 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2024-09-21 12:22:09,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-09-21 12:22:09,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2024-09-21 12:22:09,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2024-09-21 12:22:09,831 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)
[2024-09-21 12:22:09,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-09-21 12:22:09,906 INFO L93 Difference]: Finished difference Result 33 states and 37 transitions.
[2024-09-21 12:22:09,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2024-09-21 12:22:09,907 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
[2024-09-21 12:22:09,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-09-21 12:22:09,908 INFO L225 Difference]: With dead ends: 33
[2024-09-21 12:22:09,909 INFO L226 Difference]: Without dead ends: 29
[2024-09-21 12:22:09,909 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
[2024-09-21 12:22:09,910 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, 0.1s IncrementalHoareTripleChecker+Time
[2024-09-21 12:22:09,911 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 69 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-09-21 12:22:09,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states.
[2024-09-21 12:22:09,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29.
[2024-09-21 12:22:09,923 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)
[2024-09-21 12:22:09,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions.
[2024-09-21 12:22:09,924 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 16
[2024-09-21 12:22:09,925 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-09-21 12:22:09,925 INFO L474 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions.
[2024-09-21 12:22:09,925 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)
[2024-09-21 12:22:09,925 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2024-09-21 12:22:09,926 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions.
[2024-09-21 12:22:09,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24
[2024-09-21 12:22:09,927 INFO L208 NwaCegarLoop]: Found error trace
[2024-09-21 12:22:09,928 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]
[2024-09-21 12:22:09,944 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0
[2024-09-21 12:22:10,130 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
[2024-09-21 12:22:10,130 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-09-21 12:22:10,131 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2024-09-21 12:22:10,131 INFO L85 PathProgramCache]: Analyzing trace with hash 306700420, now seen corresponding path program 1 times
[2024-09-21 12:22:10,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-09-21 12:22:10,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121379493]
[2024-09-21 12:22:10,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-09-21 12:22:10,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-09-21 12:22:10,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown
[2024-09-21 12:22:10,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [44838759]
[2024-09-21 12:22:10,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-09-21 12:22:10,168 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-09-21 12:22:10,169 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3
[2024-09-21 12:22:10,173 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)
[2024-09-21 12:22:10,175 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2024-09-21 12:22:10,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-21 12:22:10,220 INFO L262 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 11 conjuncts are in the unsatisfiable core
[2024-09-21 12:22:10,223 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2024-09-21 12:22:10,294 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-09-21 12:22:10,294 INFO L327 TraceCheckSpWp]: Computing backward predicates...
[2024-09-21 12:22:10,399 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2024-09-21 12:22:10,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-09-21 12:22:10,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121379493]
[2024-09-21 12:22:10,399 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2024-09-21 12:22:10,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [44838759]
[2024-09-21 12:22:10,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [44838759] provided 1 perfect and 1 imperfect interpolant sequences
[2024-09-21 12:22:10,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2024-09-21 12:22:10,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 7
[2024-09-21 12:22:10,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823155399]
[2024-09-21 12:22:10,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-09-21 12:22:10,401 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2024-09-21 12:22:10,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-09-21 12:22:10,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2024-09-21 12:22:10,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42
[2024-09-21 12:22:10,404 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)
[2024-09-21 12:22:10,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-09-21 12:22:10,455 INFO L93 Difference]: Finished difference Result 35 states and 36 transitions.
[2024-09-21 12:22:10,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2024-09-21 12:22:10,456 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
[2024-09-21 12:22:10,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-09-21 12:22:10,457 INFO L225 Difference]: With dead ends: 35
[2024-09-21 12:22:10,458 INFO L226 Difference]: Without dead ends: 30
[2024-09-21 12:22:10,459 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 38 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56
[2024-09-21 12:22:10,461 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
[2024-09-21 12:22:10,462 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]
[2024-09-21 12:22:10,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states.
[2024-09-21 12:22:10,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30.
[2024-09-21 12:22:10,472 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)
[2024-09-21 12:22:10,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 30 transitions.
[2024-09-21 12:22:10,473 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 30 transitions. Word has length 23
[2024-09-21 12:22:10,474 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-09-21 12:22:10,474 INFO L474 AbstractCegarLoop]: Abstraction has 30 states and 30 transitions.
[2024-09-21 12:22:10,485 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)
[2024-09-21 12:22:10,486 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2024-09-21 12:22:10,486 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 30 transitions.
[2024-09-21 12:22:10,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30
[2024-09-21 12:22:10,487 INFO L208 NwaCegarLoop]: Found error trace
[2024-09-21 12:22:10,487 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]
[2024-09-21 12:22:10,514 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0
[2024-09-21 12:22:10,687 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
[2024-09-21 12:22:10,688 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-09-21 12:22:10,688 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2024-09-21 12:22:10,688 INFO L85 PathProgramCache]: Analyzing trace with hash 749725687, now seen corresponding path program 1 times
[2024-09-21 12:22:10,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-09-21 12:22:10,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021033475]
[2024-09-21 12:22:10,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-09-21 12:22:10,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-09-21 12:22:10,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown
[2024-09-21 12:22:10,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2104714007]
[2024-09-21 12:22:10,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-09-21 12:22:10,713 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-09-21 12:22:10,714 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3
[2024-09-21 12:22:10,717 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)
[2024-09-21 12:22:10,719 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2024-09-21 12:22:10,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-21 12:22:10,767 INFO L262 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 12 conjuncts are in the unsatisfiable core
[2024-09-21 12:22:10,769 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2024-09-21 12:22:10,857 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2024-09-21 12:22:10,857 INFO L327 TraceCheckSpWp]: Computing backward predicates...
[2024-09-21 12:22:10,970 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2024-09-21 12:22:10,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-09-21 12:22:10,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021033475]
[2024-09-21 12:22:10,971 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2024-09-21 12:22:10,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2104714007]
[2024-09-21 12:22:10,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2104714007] provided 0 perfect and 2 imperfect interpolant sequences
[2024-09-21 12:22:10,971 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-09-21 12:22:10,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10
[2024-09-21 12:22:10,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791569554]
[2024-09-21 12:22:10,972 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-09-21 12:22:10,972 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 10 states
[2024-09-21 12:22:10,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-09-21 12:22:10,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2024-09-21 12:22:10,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90
[2024-09-21 12:22:10,974 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)
[2024-09-21 12:22:11,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-09-21 12:22:11,093 INFO L93 Difference]: Finished difference Result 45 states and 50 transitions.
[2024-09-21 12:22:11,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states.
[2024-09-21 12:22:11,094 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
[2024-09-21 12:22:11,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-09-21 12:22:11,095 INFO L225 Difference]: With dead ends: 45
[2024-09-21 12:22:11,095 INFO L226 Difference]: Without dead ends: 39
[2024-09-21 12:22:11,095 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
[2024-09-21 12:22:11,096 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, 0.1s IncrementalHoareTripleChecker+Time
[2024-09-21 12:22:11,097 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 98 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-09-21 12:22:11,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states.
[2024-09-21 12:22:11,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39.
[2024-09-21 12:22:11,110 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)
[2024-09-21 12:22:11,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions.
[2024-09-21 12:22:11,111 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 29
[2024-09-21 12:22:11,111 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-09-21 12:22:11,112 INFO L474 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions.
[2024-09-21 12:22:11,112 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)
[2024-09-21 12:22:11,112 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2024-09-21 12:22:11,112 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions.
[2024-09-21 12:22:11,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51
[2024-09-21 12:22:11,114 INFO L208 NwaCegarLoop]: Found error trace
[2024-09-21 12:22:11,114 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]
[2024-09-21 12:22:11,130 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0
[2024-09-21 12:22:11,314 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
[2024-09-21 12:22:11,315 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-09-21 12:22:11,315 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2024-09-21 12:22:11,315 INFO L85 PathProgramCache]: Analyzing trace with hash 608187154, now seen corresponding path program 2 times
[2024-09-21 12:22:11,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-09-21 12:22:11,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501563943]
[2024-09-21 12:22:11,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-09-21 12:22:11,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-09-21 12:22:11,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown
[2024-09-21 12:22:11,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [84789259]
[2024-09-21 12:22:11,375 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2024-09-21 12:22:11,375 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-09-21 12:22:11,375 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3
[2024-09-21 12:22:11,377 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)
[2024-09-21 12:22:11,379 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2024-09-21 12:22:11,440 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2024-09-21 12:22:11,440 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-09-21 12:22:11,442 INFO L262 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 34 conjuncts are in the unsatisfiable core
[2024-09-21 12:22:11,445 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2024-09-21 12:22:11,641 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 9 proven. 43 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked.
[2024-09-21 12:22:11,642 INFO L327 TraceCheckSpWp]: Computing backward predicates...
[2024-09-21 12:22:11,999 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 9 proven. 43 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked.
[2024-09-21 12:22:11,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-09-21 12:22:11,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501563943]
[2024-09-21 12:22:11,999 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2024-09-21 12:22:11,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [84789259]
[2024-09-21 12:22:11,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [84789259] provided 0 perfect and 2 imperfect interpolant sequences
[2024-09-21 12:22:11,999 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-09-21 12:22:11,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 22
[2024-09-21 12:22:12,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072640273]
[2024-09-21 12:22:12,000 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-09-21 12:22:12,000 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 22 states
[2024-09-21 12:22:12,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-09-21 12:22:12,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants.
[2024-09-21 12:22:12,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=381, Unknown=0, NotChecked=0, Total=462
[2024-09-21 12:22:12,002 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)
[2024-09-21 12:22:12,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-09-21 12:22:12,389 INFO L93 Difference]: Finished difference Result 43 states and 48 transitions.
[2024-09-21 12:22:12,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states.
[2024-09-21 12:22:12,391 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
[2024-09-21 12:22:12,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-09-21 12:22:12,391 INFO L225 Difference]: With dead ends: 43
[2024-09-21 12:22:12,391 INFO L226 Difference]: Without dead ends: 0
[2024-09-21 12:22:12,392 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=139, Invalid=617, Unknown=0, NotChecked=0, Total=756
[2024-09-21 12:22:12,393 INFO L434 NwaCegarLoop]: 22 mSDtfsCounter, 5 mSDsluCounter, 240 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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, 0.2s IncrementalHoareTripleChecker+Time
[2024-09-21 12:22:12,394 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 262 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2024-09-21 12:22:12,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states.
[2024-09-21 12:22:12,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0.
[2024-09-21 12:22:12,395 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)
[2024-09-21 12:22:12,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions.
[2024-09-21 12:22:12,395 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 50
[2024-09-21 12:22:12,395 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-09-21 12:22:12,395 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions.
[2024-09-21 12:22:12,395 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)
[2024-09-21 12:22:12,396 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2024-09-21 12:22:12,396 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions.
[2024-09-21 12:22:12,396 INFO L282 IsEmpty]: Finished isEmpty. No accepting run.
[2024-09-21 12:22:12,399 INFO L785 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining)
[2024-09-21 12:22:12,415 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0
[2024-09-21 12:22:12,599 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
[2024-09-21 12:22:12,603 INFO L408 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1]
[2024-09-21 12:22:12,605 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.
[2024-09-21 12:22:12,897 INFO L165 ceAbstractionStarter]: Computing trace abstraction results
[2024-09-21 12:22:12,918 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 12:22:12 BoogieIcfgContainer
[2024-09-21 12:22:12,918 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2024-09-21 12:22:12,918 INFO L112 PluginConnector]: ------------------------Witness Printer----------------------------
[2024-09-21 12:22:12,919 INFO L270 PluginConnector]: Initializing Witness Printer...
[2024-09-21 12:22:12,919 INFO L274 PluginConnector]: Witness Printer initialized
[2024-09-21 12:22:12,919 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:22:09" (3/4) ...
[2024-09-21 12:22:12,921 INFO L139 WitnessPrinter]: Generating witness for correct program
[2024-09-21 12:22:12,977 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.yml
[2024-09-21 12:22:12,978 INFO L131 PluginConnector]: ------------------------ END Witness Printer----------------------------
[2024-09-21 12:22:12,978 INFO L158 Benchmark]: Toolchain (without parser) took 4345.96ms. Allocated memory was 134.2MB in the beginning and 205.5MB in the end (delta: 71.3MB). Free memory was 62.7MB in the beginning and 122.6MB in the end (delta: -59.9MB). Peak memory consumption was 13.6MB. Max. memory is 16.1GB.
[2024-09-21 12:22:12,979 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 134.2MB. Free memory was 95.4MB in the beginning and 95.2MB in the end (delta: 160.8kB). There was no memory consumed. Max. memory is 16.1GB.
[2024-09-21 12:22:12,979 INFO L158 Benchmark]: CACSL2BoogieTranslator took 238.14ms. Allocated memory was 134.2MB in the beginning and 205.5MB in the end (delta: 71.3MB). Free memory was 62.5MB in the beginning and 175.4MB in the end (delta: -112.9MB). Peak memory consumption was 19.6MB. Max. memory is 16.1GB.
[2024-09-21 12:22:12,979 INFO L158 Benchmark]: Boogie Procedure Inliner took 26.70ms. Allocated memory is still 205.5MB. Free memory was 175.4MB in the beginning and 174.4MB in the end (delta: 964.4kB). There was no memory consumed. Max. memory is 16.1GB.
[2024-09-21 12:22:12,979 INFO L158 Benchmark]: Boogie Preprocessor took 37.59ms. Allocated memory is still 205.5MB. Free memory was 174.4MB in the beginning and 173.3MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
[2024-09-21 12:22:12,980 INFO L158 Benchmark]: RCFGBuilder took 281.91ms. Allocated memory is still 205.5MB. Free memory was 173.3MB in the beginning and 159.7MB in the end (delta: 13.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB.
[2024-09-21 12:22:12,980 INFO L158 Benchmark]: TraceAbstraction took 3696.28ms. Allocated memory is still 205.5MB. Free memory was 158.6MB in the beginning and 125.7MB in the end (delta: 32.9MB). Peak memory consumption was 31.7MB. Max. memory is 16.1GB.
[2024-09-21 12:22:12,980 INFO L158 Benchmark]: Witness Printer took 59.30ms. Allocated memory is still 205.5MB. Free memory was 125.7MB in the beginning and 122.6MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB.
[2024-09-21 12:22:12,983 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.17ms. Allocated memory is still 134.2MB. Free memory was 95.4MB in the beginning and 95.2MB in the end (delta: 160.8kB). There was no memory consumed. Max. memory is 16.1GB.
* CACSL2BoogieTranslator took 238.14ms. Allocated memory was 134.2MB in the beginning and 205.5MB in the end (delta: 71.3MB). Free memory was 62.5MB in the beginning and 175.4MB in the end (delta: -112.9MB). Peak memory consumption was 19.6MB. Max. memory is 16.1GB.
* Boogie Procedure Inliner took 26.70ms. Allocated memory is still 205.5MB. Free memory was 175.4MB in the beginning and 174.4MB in the end (delta: 964.4kB). There was no memory consumed. Max. memory is 16.1GB.
* Boogie Preprocessor took 37.59ms. Allocated memory is still 205.5MB. Free memory was 174.4MB in the beginning and 173.3MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
* RCFGBuilder took 281.91ms. Allocated memory is still 205.5MB. Free memory was 173.3MB in the beginning and 159.7MB in the end (delta: 13.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB.
* TraceAbstraction took 3696.28ms. Allocated memory is still 205.5MB. Free memory was 158.6MB in the beginning and 125.7MB in the end (delta: 32.9MB). Peak memory consumption was 31.7MB. Max. memory is 16.1GB.
* Witness Printer took 59.30ms. Allocated memory is still 205.5MB. Free memory was 125.7MB in the beginning and 122.6MB 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
- 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: 3.3s, OverallIterations: 5, TraceHistogramMax: 6, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 18 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 14 mSDsluCounter, 523 SdHoareTripleChecker+Invalid, 0.3s 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, 0.6s 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: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.1s 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 <= cond) Ensures: (1 <= cond)
RESULT: Ultimate proved your program to be correct!
[2024-09-21 12:22:13,001 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