./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/ps4-ll_valuebound50.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_valuebound50.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 dcebefc76bde79b9a5fa67feebc75881761b0a4209b78516b385f787f62f9340 --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 12:22:17,260 INFO L188 SettingsManager]: Resetting all preferences to default values...
[2024-09-21 12:22:17,333 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf
[2024-09-21 12:22:17,340 WARN L101 SettingsManager]: Preference file contains the following unknown settings:
[2024-09-21 12:22:17,340 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2024-09-21 12:22:17,359 INFO L130 SettingsManager]: Preferences different from defaults after loading the file:
[2024-09-21 12:22:17,359 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2024-09-21 12:22:17,360 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2024-09-21 12:22:17,360 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2024-09-21 12:22:17,361 INFO L153 SettingsManager]: * Use memory slicer=true
[2024-09-21 12:22:17,361 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2024-09-21 12:22:17,361 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2024-09-21 12:22:17,362 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2024-09-21 12:22:17,362 INFO L153 SettingsManager]: * Create parallel compositions if possible=false
[2024-09-21 12:22:17,363 INFO L153 SettingsManager]: * Use SBE=true
[2024-09-21 12:22:17,364 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2024-09-21 12:22:17,364 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2024-09-21 12:22:17,367 INFO L153 SettingsManager]: * sizeof long=4
[2024-09-21 12:22:17,367 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true
[2024-09-21 12:22:17,367 INFO L153 SettingsManager]: * sizeof POINTER=4
[2024-09-21 12:22:17,368 INFO L153 SettingsManager]: * Check division by zero=IGNORE
[2024-09-21 12:22:17,368 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2024-09-21 12:22:17,368 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2024-09-21 12:22:17,369 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2024-09-21 12:22:17,369 INFO L153 SettingsManager]: * Allow undefined functions=false
[2024-09-21 12:22:17,369 INFO L153 SettingsManager]: * sizeof long double=12
[2024-09-21 12:22:17,370 INFO L153 SettingsManager]: * Check if freed pointer was valid=false
[2024-09-21 12:22:17,370 INFO L153 SettingsManager]: * Use constant arrays=true
[2024-09-21 12:22:17,370 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2024-09-21 12:22:17,371 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements
[2024-09-21 12:22:17,371 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true
[2024-09-21 12:22:17,371 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode
[2024-09-21 12:22:17,371 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-09-21 12:22:17,372 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2024-09-21 12:22:17,372 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2024-09-21 12:22:17,372 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads
[2024-09-21 12:22:17,373 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL
[2024-09-21 12:22:17,373 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2024-09-21 12:22:17,373 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false
[2024-09-21 12:22:17,373 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET
[2024-09-21 12:22:17,374 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO
[2024-09-21 12:22:17,374 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode
[2024-09-21 12:22:17,374 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) )
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dcebefc76bde79b9a5fa67feebc75881761b0a4209b78516b385f787f62f9340
Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Generate GraphML witnesses -> false
[2024-09-21 12:22:17,642 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2024-09-21 12:22:17,669 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2024-09-21 12:22:17,673 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2024-09-21 12:22:17,674 INFO L270 PluginConnector]: Initializing CDTParser...
[2024-09-21 12:22:17,674 INFO L274 PluginConnector]: CDTParser initialized
[2024-09-21 12:22:17,676 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/nla-digbench-scaling/ps4-ll_valuebound50.c
[2024-09-21 12:22:19,092 INFO L533 CDTParser]: Created temporary CDT project at NULL
[2024-09-21 12:22:19,314 INFO L384 CDTParser]: Found 1 translation units.
[2024-09-21 12:22:19,315 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/ps4-ll_valuebound50.c
[2024-09-21 12:22:19,323 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/8b992ceaf/e19710582dc74624a262f399e1470620/FLAGaf58670d7
[2024-09-21 12:22:19,712 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/8b992ceaf/e19710582dc74624a262f399e1470620
[2024-09-21 12:22:19,714 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2024-09-21 12:22:19,715 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements.
[2024-09-21 12:22:19,716 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2024-09-21 12:22:19,716 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2024-09-21 12:22:19,720 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized
[2024-09-21 12:22:19,721 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:22:19" (1/1) ...
[2024-09-21 12:22:19,721 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@201eef3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:22:19, skipping insertion in model container
[2024-09-21 12:22:19,722 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:22:19" (1/1) ...
[2024-09-21 12:22:19,740 INFO L175 MainTranslator]: Built tables and reachable declarations
[2024-09-21 12:22:19,881 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_valuebound50.c[458,471]
[2024-09-21 12:22:19,898 INFO L210 PostProcessor]: Analyzing one entry point: main
[2024-09-21 12:22:19,907 INFO L200 MainTranslator]: Completed pre-run
[2024-09-21 12:22:19,919 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_valuebound50.c[458,471]
[2024-09-21 12:22:19,924 INFO L210 PostProcessor]: Analyzing one entry point: main
[2024-09-21 12:22:19,942 INFO L204 MainTranslator]: Completed translation
[2024-09-21 12:22:19,943 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:22:19 WrapperNode
[2024-09-21 12:22:19,943 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2024-09-21 12:22:19,944 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2024-09-21 12:22:19,944 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner...
[2024-09-21 12:22:19,945 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized
[2024-09-21 12:22:19,951 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:22:19" (1/1) ...
[2024-09-21 12:22:19,958 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:22:19" (1/1) ...
[2024-09-21 12:22:19,964 INFO L138 Inliner]: procedures = 14, calls = 11, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0
[2024-09-21 12:22:19,965 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2024-09-21 12:22:19,965 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2024-09-21 12:22:19,966 INFO L270 PluginConnector]: Initializing Boogie Preprocessor...
[2024-09-21 12:22:19,966 INFO L274 PluginConnector]: Boogie Preprocessor initialized
[2024-09-21 12:22:19,976 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:22:19" (1/1) ...
[2024-09-21 12:22:19,976 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:22:19" (1/1) ...
[2024-09-21 12:22:19,977 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:22:19" (1/1) ...
[2024-09-21 12:22:19,993 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 12:22:19,996 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:22:19" (1/1) ...
[2024-09-21 12:22:19,996 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:22:19" (1/1) ...
[2024-09-21 12:22:19,999 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:22:19" (1/1) ...
[2024-09-21 12:22:20,004 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:22:19" (1/1) ...
[2024-09-21 12:22:20,005 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:22:19" (1/1) ...
[2024-09-21 12:22:20,009 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:22:19" (1/1) ...
[2024-09-21 12:22:20,011 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2024-09-21 12:22:20,012 INFO L112 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2024-09-21 12:22:20,012 INFO L270 PluginConnector]: Initializing RCFGBuilder...
[2024-09-21 12:22:20,012 INFO L274 PluginConnector]: RCFGBuilder initialized
[2024-09-21 12:22:20,013 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:22:19" (1/1) ...
[2024-09-21 12:22:20,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-09-21 12:22:20,033 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3
[2024-09-21 12:22:20,061 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 12:22:20,068 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 12:22:20,115 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2024-09-21 12:22:20,115 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2024-09-21 12:22:20,115 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2024-09-21 12:22:20,115 INFO L130 BoogieDeclarations]: Found specification of procedure main
[2024-09-21 12:22:20,116 INFO L138 BoogieDeclarations]: Found implementation of procedure main
[2024-09-21 12:22:20,116 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0
[2024-09-21 12:22:20,116 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2024-09-21 12:22:20,117 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2024-09-21 12:22:20,118 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2024-09-21 12:22:20,118 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2024-09-21 12:22:20,118 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert
[2024-09-21 12:22:20,119 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert
[2024-09-21 12:22:20,177 INFO L242 CfgBuilder]: Building ICFG
[2024-09-21 12:22:20,179 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation
[2024-09-21 12:22:20,341 INFO L? ?]: Removed 5 outVars from TransFormulas that were not future-live.
[2024-09-21 12:22:20,341 INFO L291 CfgBuilder]: Performing block encoding
[2024-09-21 12:22:20,364 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2024-09-21 12:22:20,364 INFO L318 CfgBuilder]: Removed 1 assume(true) statements.
[2024-09-21 12:22:20,365 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:22:20 BoogieIcfgContainer
[2024-09-21 12:22:20,365 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2024-09-21 12:22:20,367 INFO L112 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2024-09-21 12:22:20,367 INFO L270 PluginConnector]: Initializing TraceAbstraction...
[2024-09-21 12:22:20,370 INFO L274 PluginConnector]: TraceAbstraction initialized
[2024-09-21 12:22:20,371 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 12:22:19" (1/3) ...
[2024-09-21 12:22:20,372 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e86dc1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:22:20, skipping insertion in model container
[2024-09-21 12:22:20,372 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:22:19" (2/3) ...
[2024-09-21 12:22:20,374 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e86dc1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:22:20, skipping insertion in model container
[2024-09-21 12:22:20,374 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:22:20" (3/3) ...
[2024-09-21 12:22:20,375 INFO L112 eAbstractionObserver]: Analyzing ICFG ps4-ll_valuebound50.c
[2024-09-21 12:22:20,390 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2024-09-21 12:22:20,390 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2024-09-21 12:22:20,455 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2024-09-21 12:22:20,462 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;@7bcef902, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-09-21 12:22:20,462 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2024-09-21 12:22:20,465 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 12:22:20,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17
[2024-09-21 12:22:20,472 INFO L208 NwaCegarLoop]: Found error trace
[2024-09-21 12:22:20,473 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-09-21 12:22:20,474 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-09-21 12:22:20,478 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2024-09-21 12:22:20,479 INFO L85 PathProgramCache]: Analyzing trace with hash 1238311395, now seen corresponding path program 1 times
[2024-09-21 12:22:20,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-09-21 12:22:20,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845263186]
[2024-09-21 12:22:20,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-09-21 12:22:20,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-09-21 12:22:20,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-21 12:22:20,629 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2024-09-21 12:22:20,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-21 12:22:20,644 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5
[2024-09-21 12:22:20,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-21 12:22:20,658 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 12:22:20,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-09-21 12:22:20,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845263186]
[2024-09-21 12:22:20,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845263186] provided 1 perfect and 0 imperfect interpolant sequences
[2024-09-21 12:22:20,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-09-21 12:22:20,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2024-09-21 12:22:20,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048966685]
[2024-09-21 12:22:20,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-09-21 12:22:20,668 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2024-09-21 12:22:20,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-09-21 12:22:20,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2024-09-21 12:22:20,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2024-09-21 12:22:20,696 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 12:22:20,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-09-21 12:22:20,730 INFO L93 Difference]: Finished difference Result 44 states and 58 transitions.
[2024-09-21 12:22:20,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states.
[2024-09-21 12:22:20,733 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 12:22:20,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-09-21 12:22:20,741 INFO L225 Difference]: With dead ends: 44
[2024-09-21 12:22:20,742 INFO L226 Difference]: Without dead ends: 22
[2024-09-21 12:22:20,747 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 12:22:20,754 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 12:22:20,756 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 12:22:20,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states.
[2024-09-21 12:22:20,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22.
[2024-09-21 12:22:20,791 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 12:22:20,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions.
[2024-09-21 12:22:20,794 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 16
[2024-09-21 12:22:20,795 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-09-21 12:22:20,796 INFO L474 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions.
[2024-09-21 12:22:20,796 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 12:22:20,797 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2024-09-21 12:22:20,797 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions.
[2024-09-21 12:22:20,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17
[2024-09-21 12:22:20,798 INFO L208 NwaCegarLoop]: Found error trace
[2024-09-21 12:22:20,798 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-09-21 12:22:20,799 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2024-09-21 12:22:20,799 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-09-21 12:22:20,800 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2024-09-21 12:22:20,800 INFO L85 PathProgramCache]: Analyzing trace with hash 1910922015, now seen corresponding path program 1 times
[2024-09-21 12:22:20,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-09-21 12:22:20,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461156835]
[2024-09-21 12:22:20,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-09-21 12:22:20,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-09-21 12:22:20,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown
[2024-09-21 12:22:20,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [83131591]
[2024-09-21 12:22:20,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-09-21 12:22:20,851 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-09-21 12:22:20,851 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3
[2024-09-21 12:22:20,853 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 12:22:20,858 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 12:22:20,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-21 12:22:20,938 INFO L262 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 7 conjuncts are in the unsatisfiable core
[2024-09-21 12:22:20,947 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2024-09-21 12:22:21,058 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 12:22:21,059 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-09-21 12:22:21,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-09-21 12:22:21,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461156835]
[2024-09-21 12:22:21,062 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2024-09-21 12:22:21,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [83131591]
[2024-09-21 12:22:21,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [83131591] provided 1 perfect and 0 imperfect interpolant sequences
[2024-09-21 12:22:21,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-09-21 12:22:21,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2024-09-21 12:22:21,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380656293]
[2024-09-21 12:22:21,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-09-21 12:22:21,065 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2024-09-21 12:22:21,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-09-21 12:22:21,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2024-09-21 12:22:21,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2024-09-21 12:22:21,068 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 12:22:21,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-09-21 12:22:21,153 INFO L93 Difference]: Finished difference Result 33 states and 37 transitions.
[2024-09-21 12:22:21,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2024-09-21 12:22:21,154 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 12:22:21,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-09-21 12:22:21,155 INFO L225 Difference]: With dead ends: 33
[2024-09-21 12:22:21,155 INFO L226 Difference]: Without dead ends: 29
[2024-09-21 12:22:21,155 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 12:22:21,157 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 12:22:21,159 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 12:22:21,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states.
[2024-09-21 12:22:21,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29.
[2024-09-21 12:22:21,168 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 12:22:21,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions.
[2024-09-21 12:22:21,170 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 16
[2024-09-21 12:22:21,170 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-09-21 12:22:21,170 INFO L474 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions.
[2024-09-21 12:22:21,170 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 12:22:21,171 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2024-09-21 12:22:21,171 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions.
[2024-09-21 12:22:21,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24
[2024-09-21 12:22:21,172 INFO L208 NwaCegarLoop]: Found error trace
[2024-09-21 12:22:21,172 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 12:22:21,192 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 12:22:21,377 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 12:22:21,378 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-09-21 12:22:21,379 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2024-09-21 12:22:21,379 INFO L85 PathProgramCache]: Analyzing trace with hash 306700420, now seen corresponding path program 1 times
[2024-09-21 12:22:21,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-09-21 12:22:21,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325710621]
[2024-09-21 12:22:21,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-09-21 12:22:21,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-09-21 12:22:21,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown
[2024-09-21 12:22:21,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [700807572]
[2024-09-21 12:22:21,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-09-21 12:22:21,407 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-09-21 12:22:21,407 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3
[2024-09-21 12:22:21,409 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 12:22:21,411 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 12:22:21,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-21 12:22:21,477 INFO L262 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 11 conjuncts are in the unsatisfiable core
[2024-09-21 12:22:21,480 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2024-09-21 12:22:21,577 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 12:22:21,577 INFO L327 TraceCheckSpWp]: Computing backward predicates...
[2024-09-21 12:22:21,684 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 12:22:21,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-09-21 12:22:21,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325710621]
[2024-09-21 12:22:21,686 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2024-09-21 12:22:21,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [700807572]
[2024-09-21 12:22:21,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [700807572] provided 1 perfect and 1 imperfect interpolant sequences
[2024-09-21 12:22:21,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2024-09-21 12:22:21,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 7
[2024-09-21 12:22:21,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735269840]
[2024-09-21 12:22:21,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-09-21 12:22:21,687 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2024-09-21 12:22:21,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-09-21 12:22:21,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2024-09-21 12:22:21,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42
[2024-09-21 12:22:21,691 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 12:22:21,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-09-21 12:22:21,736 INFO L93 Difference]: Finished difference Result 35 states and 36 transitions.
[2024-09-21 12:22:21,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2024-09-21 12:22:21,737 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 12:22:21,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-09-21 12:22:21,738 INFO L225 Difference]: With dead ends: 35
[2024-09-21 12:22:21,739 INFO L226 Difference]: Without dead ends: 30
[2024-09-21 12:22:21,739 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 12:22:21,740 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 12:22:21,741 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 12:22:21,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states.
[2024-09-21 12:22:21,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30.
[2024-09-21 12:22:21,750 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 12:22:21,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 30 transitions.
[2024-09-21 12:22:21,754 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 30 transitions. Word has length 23
[2024-09-21 12:22:21,755 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-09-21 12:22:21,755 INFO L474 AbstractCegarLoop]: Abstraction has 30 states and 30 transitions.
[2024-09-21 12:22:21,755 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 12:22:21,756 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2024-09-21 12:22:21,756 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 30 transitions.
[2024-09-21 12:22:21,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30
[2024-09-21 12:22:21,757 INFO L208 NwaCegarLoop]: Found error trace
[2024-09-21 12:22:21,757 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 12:22:21,770 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0
[2024-09-21 12:22:21,957 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 12:22:21,958 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-09-21 12:22:21,958 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2024-09-21 12:22:21,959 INFO L85 PathProgramCache]: Analyzing trace with hash 749725687, now seen corresponding path program 1 times
[2024-09-21 12:22:21,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-09-21 12:22:21,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065034770]
[2024-09-21 12:22:21,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-09-21 12:22:21,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-09-21 12:22:21,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown
[2024-09-21 12:22:21,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [687311159]
[2024-09-21 12:22:21,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-09-21 12:22:21,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-09-21 12:22:21,981 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3
[2024-09-21 12:22:21,983 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 12:22:21,986 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 12:22:22,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-21 12:22:22,044 INFO L262 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 12 conjuncts are in the unsatisfiable core
[2024-09-21 12:22:22,046 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2024-09-21 12:22:22,194 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 12:22:22,194 INFO L327 TraceCheckSpWp]: Computing backward predicates...
[2024-09-21 12:22:22,335 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 12:22:22,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-09-21 12:22:22,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065034770]
[2024-09-21 12:22:22,336 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2024-09-21 12:22:22,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [687311159]
[2024-09-21 12:22:22,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [687311159] provided 0 perfect and 2 imperfect interpolant sequences
[2024-09-21 12:22:22,336 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-09-21 12:22:22,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10
[2024-09-21 12:22:22,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871256326]
[2024-09-21 12:22:22,337 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-09-21 12:22:22,337 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 10 states
[2024-09-21 12:22:22,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-09-21 12:22:22,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2024-09-21 12:22:22,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90
[2024-09-21 12:22:22,339 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 12:22:22,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-09-21 12:22:22,452 INFO L93 Difference]: Finished difference Result 45 states and 50 transitions.
[2024-09-21 12:22:22,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states.
[2024-09-21 12:22:22,453 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 12:22:22,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-09-21 12:22:22,454 INFO L225 Difference]: With dead ends: 45
[2024-09-21 12:22:22,454 INFO L226 Difference]: Without dead ends: 39
[2024-09-21 12:22:22,455 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 12:22:22,456 INFO L434 NwaCegarLoop]: 22 mSDtfsCounter, 1 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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 12:22:22,456 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 12:22:22,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states.
[2024-09-21 12:22:22,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39.
[2024-09-21 12:22:22,470 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 12:22:22,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions.
[2024-09-21 12:22:22,471 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 29
[2024-09-21 12:22:22,471 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-09-21 12:22:22,471 INFO L474 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions.
[2024-09-21 12:22:22,471 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 12:22:22,472 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2024-09-21 12:22:22,472 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions.
[2024-09-21 12:22:22,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51
[2024-09-21 12:22:22,473 INFO L208 NwaCegarLoop]: Found error trace
[2024-09-21 12:22:22,473 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 12:22:22,490 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0
[2024-09-21 12:22:22,677 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 12:22:22,678 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-09-21 12:22:22,679 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2024-09-21 12:22:22,679 INFO L85 PathProgramCache]: Analyzing trace with hash 608187154, now seen corresponding path program 2 times
[2024-09-21 12:22:22,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-09-21 12:22:22,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443057236]
[2024-09-21 12:22:22,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-09-21 12:22:22,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-09-21 12:22:22,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown
[2024-09-21 12:22:22,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1799801808]
[2024-09-21 12:22:22,736 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2024-09-21 12:22:22,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-09-21 12:22:22,738 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3
[2024-09-21 12:22:22,740 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 12:22:22,741 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 12:22:22,792 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2024-09-21 12:22:22,792 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-09-21 12:22:22,794 INFO L262 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 34 conjuncts are in the unsatisfiable core
[2024-09-21 12:22:22,797 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2024-09-21 12:22:23,025 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 12:22:23,025 INFO L327 TraceCheckSpWp]: Computing backward predicates...
[2024-09-21 12:22:23,404 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 12:22:23,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-09-21 12:22:23,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443057236]
[2024-09-21 12:22:23,405 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2024-09-21 12:22:23,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1799801808]
[2024-09-21 12:22:23,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1799801808] provided 0 perfect and 2 imperfect interpolant sequences
[2024-09-21 12:22:23,406 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-09-21 12:22:23,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 22
[2024-09-21 12:22:23,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138483045]
[2024-09-21 12:22:23,406 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-09-21 12:22:23,407 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 22 states
[2024-09-21 12:22:23,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-09-21 12:22:23,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants.
[2024-09-21 12:22:23,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=381, Unknown=0, NotChecked=0, Total=462
[2024-09-21 12:22:23,409 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 12:22:23,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-09-21 12:22:23,809 INFO L93 Difference]: Finished difference Result 43 states and 48 transitions.
[2024-09-21 12:22:23,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states.
[2024-09-21 12:22:23,810 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 12:22:23,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-09-21 12:22:23,811 INFO L225 Difference]: With dead ends: 43
[2024-09-21 12:22:23,811 INFO L226 Difference]: Without dead ends: 0
[2024-09-21 12:22:23,812 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 12:22:23,812 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 12:22:23,813 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 12:22:23,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states.
[2024-09-21 12:22:23,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0.
[2024-09-21 12:22:23,814 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 12:22:23,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions.
[2024-09-21 12:22:23,814 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 50
[2024-09-21 12:22:23,814 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-09-21 12:22:23,815 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions.
[2024-09-21 12:22:23,815 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 12:22:23,815 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2024-09-21 12:22:23,815 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions.
[2024-09-21 12:22:23,816 INFO L282 IsEmpty]: Finished isEmpty. No accepting run.
[2024-09-21 12:22:23,819 INFO L785 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining)
[2024-09-21 12:22:23,836 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0
[2024-09-21 12:22:24,023 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 12:22:24,027 INFO L408 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1]
[2024-09-21 12:22:24,028 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.
[2024-09-21 12:22:24,340 INFO L165 ceAbstractionStarter]: Computing trace abstraction results
[2024-09-21 12:22:24,363 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 12:22:24 BoogieIcfgContainer
[2024-09-21 12:22:24,364 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2024-09-21 12:22:24,364 INFO L112 PluginConnector]: ------------------------Witness Printer----------------------------
[2024-09-21 12:22:24,365 INFO L270 PluginConnector]: Initializing Witness Printer...
[2024-09-21 12:22:24,365 INFO L274 PluginConnector]: Witness Printer initialized
[2024-09-21 12:22:24,365 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:22:20" (3/4) ...
[2024-09-21 12:22:24,367 INFO L139 WitnessPrinter]: Generating witness for correct program
[2024-09-21 12:22:24,417 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.yml
[2024-09-21 12:22:24,417 INFO L131 PluginConnector]: ------------------------ END Witness Printer----------------------------
[2024-09-21 12:22:24,418 INFO L158 Benchmark]: Toolchain (without parser) took 4702.93ms. Allocated memory was 155.2MB in the beginning and 186.6MB in the end (delta: 31.5MB). Free memory was 122.6MB in the beginning and 107.7MB in the end (delta: 14.9MB). Peak memory consumption was 45.3MB. Max. memory is 16.1GB.
[2024-09-21 12:22:24,418 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 109.1MB. Free memory is still 80.1MB. There was no memory consumed. Max. memory is 16.1GB.
[2024-09-21 12:22:24,418 INFO L158 Benchmark]: CACSL2BoogieTranslator took 227.59ms. Allocated memory is still 155.2MB. Free memory was 122.6MB in the beginning and 111.1MB in the end (delta: 11.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB.
[2024-09-21 12:22:24,419 INFO L158 Benchmark]: Boogie Procedure Inliner took 20.65ms. Allocated memory is still 155.2MB. Free memory was 111.1MB in the beginning and 110.0MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
[2024-09-21 12:22:24,419 INFO L158 Benchmark]: Boogie Preprocessor took 45.54ms. Allocated memory is still 155.2MB. Free memory was 110.0MB in the beginning and 109.0MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB.
[2024-09-21 12:22:24,419 INFO L158 Benchmark]: RCFGBuilder took 353.15ms. Allocated memory is still 155.2MB. Free memory was 109.0MB in the beginning and 123.0MB in the end (delta: -14.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB.
[2024-09-21 12:22:24,420 INFO L158 Benchmark]: TraceAbstraction took 3997.18ms. Allocated memory was 155.2MB in the beginning and 186.6MB in the end (delta: 31.5MB). Free memory was 121.9MB in the beginning and 109.8MB in the end (delta: 12.1MB). Peak memory consumption was 45.6MB. Max. memory is 16.1GB.
[2024-09-21 12:22:24,420 INFO L158 Benchmark]: Witness Printer took 52.92ms. Allocated memory is still 186.6MB. Free memory was 109.8MB in the beginning and 107.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
[2024-09-21 12:22:24,421 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.15ms. Allocated memory is still 109.1MB. Free memory is still 80.1MB. There was no memory consumed. Max. memory is 16.1GB.
* CACSL2BoogieTranslator took 227.59ms. Allocated memory is still 155.2MB. Free memory was 122.6MB in the beginning and 111.1MB in the end (delta: 11.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB.
* Boogie Procedure Inliner took 20.65ms. Allocated memory is still 155.2MB. Free memory was 111.1MB in the beginning and 110.0MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
* Boogie Preprocessor took 45.54ms. Allocated memory is still 155.2MB. Free memory was 110.0MB in the beginning and 109.0MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB.
* RCFGBuilder took 353.15ms. Allocated memory is still 155.2MB. Free memory was 109.0MB in the beginning and 123.0MB in the end (delta: -14.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB.
* TraceAbstraction took 3997.18ms. Allocated memory was 155.2MB in the beginning and 186.6MB in the end (delta: 31.5MB). Free memory was 121.9MB in the beginning and 109.8MB in the end (delta: 12.1MB). Peak memory consumption was 45.6MB. Max. memory is 16.1GB.
* Witness Printer took 52.92ms. Allocated memory is still 186.6MB. Free memory was 109.8MB in the beginning and 107.7MB 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: 3.6s, OverallIterations: 5, TraceHistogramMax: 6, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.8s, 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, 0.7s 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, 1.3s 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 12:22:24,438 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