./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/freire1_valuebound2.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 ca4ee3dd
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/freire1_valuebound2.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 2c82dcc3d917c20926ea634368e9542e23b7ae4e7817b33542bbba01403d748d --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-ca4ee3d-m
[2024-09-20 19:18:52,571 INFO L188 SettingsManager]: Resetting all preferences to default values...
[2024-09-20 19:18:52,640 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf
[2024-09-20 19:18:52,648 WARN L101 SettingsManager]: Preference file contains the following unknown settings:
[2024-09-20 19:18:52,649 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2024-09-20 19:18:52,676 INFO L130 SettingsManager]: Preferences different from defaults after loading the file:
[2024-09-20 19:18:52,677 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2024-09-20 19:18:52,677 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2024-09-20 19:18:52,678 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2024-09-20 19:18:52,678 INFO L153 SettingsManager]: * Use memory slicer=true
[2024-09-20 19:18:52,679 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2024-09-20 19:18:52,679 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2024-09-20 19:18:52,679 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2024-09-20 19:18:52,680 INFO L153 SettingsManager]: * Create parallel compositions if possible=false
[2024-09-20 19:18:52,680 INFO L153 SettingsManager]: * Use SBE=true
[2024-09-20 19:18:52,681 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2024-09-20 19:18:52,681 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2024-09-20 19:18:52,685 INFO L153 SettingsManager]: * sizeof long=4
[2024-09-20 19:18:52,686 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true
[2024-09-20 19:18:52,686 INFO L153 SettingsManager]: * sizeof POINTER=4
[2024-09-20 19:18:52,686 INFO L153 SettingsManager]: * Check division by zero=IGNORE
[2024-09-20 19:18:52,686 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2024-09-20 19:18:52,687 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2024-09-20 19:18:52,687 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2024-09-20 19:18:52,687 INFO L153 SettingsManager]: * Allow undefined functions=false
[2024-09-20 19:18:52,687 INFO L153 SettingsManager]: * sizeof long double=12
[2024-09-20 19:18:52,688 INFO L153 SettingsManager]: * Check if freed pointer was valid=false
[2024-09-20 19:18:52,688 INFO L153 SettingsManager]: * Use constant arrays=true
[2024-09-20 19:18:52,688 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2024-09-20 19:18:52,688 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements
[2024-09-20 19:18:52,689 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true
[2024-09-20 19:18:52,689 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode
[2024-09-20 19:18:52,689 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-09-20 19:18:52,689 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2024-09-20 19:18:52,690 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2024-09-20 19:18:52,690 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads
[2024-09-20 19:18:52,690 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL
[2024-09-20 19:18:52,691 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2024-09-20 19:18:52,691 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false
[2024-09-20 19:18:52,691 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET
[2024-09-20 19:18:52,691 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO
[2024-09-20 19:18:52,692 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode
[2024-09-20 19:18:52,692 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) )
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2c82dcc3d917c20926ea634368e9542e23b7ae4e7817b33542bbba01403d748d
Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Generate GraphML witnesses -> false
[2024-09-20 19:18:52,930 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2024-09-20 19:18:52,955 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2024-09-20 19:18:52,959 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2024-09-20 19:18:52,960 INFO L270 PluginConnector]: Initializing CDTParser...
[2024-09-20 19:18:52,960 INFO L274 PluginConnector]: CDTParser initialized
[2024-09-20 19:18:52,961 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/nla-digbench-scaling/freire1_valuebound2.c
[2024-09-20 19:18:54,368 INFO L533 CDTParser]: Created temporary CDT project at NULL
[2024-09-20 19:18:54,528 INFO L384 CDTParser]: Found 1 translation units.
[2024-09-20 19:18:54,528 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/freire1_valuebound2.c
[2024-09-20 19:18:54,535 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/80730c548/cc7b1920d1d446a697c372f610f27dc9/FLAG30ae18fbd
[2024-09-20 19:18:54,547 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/80730c548/cc7b1920d1d446a697c372f610f27dc9
[2024-09-20 19:18:54,549 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2024-09-20 19:18:54,551 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements.
[2024-09-20 19:18:54,552 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2024-09-20 19:18:54,552 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2024-09-20 19:18:54,556 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized
[2024-09-20 19:18:54,557 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 07:18:54" (1/1) ...
[2024-09-20 19:18:54,558 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42164a6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:18:54, skipping insertion in model container
[2024-09-20 19:18:54,558 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 07:18:54" (1/1) ...
[2024-09-20 19:18:54,573 INFO L175 MainTranslator]: Built tables and reachable declarations
[2024-09-20 19:18:54,717 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/freire1_valuebound2.c[712,725]
[2024-09-20 19:18:54,730 INFO L210 PostProcessor]: Analyzing one entry point: main
[2024-09-20 19:18:54,738 INFO L200 MainTranslator]: Completed pre-run
[2024-09-20 19:18:54,749 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/freire1_valuebound2.c[712,725]
[2024-09-20 19:18:54,755 INFO L210 PostProcessor]: Analyzing one entry point: main
[2024-09-20 19:18:54,772 INFO L204 MainTranslator]: Completed translation
[2024-09-20 19:18:54,772 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:18:54 WrapperNode
[2024-09-20 19:18:54,772 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2024-09-20 19:18:54,774 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2024-09-20 19:18:54,774 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner...
[2024-09-20 19:18:54,774 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized
[2024-09-20 19:18:54,797 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:18:54" (1/1) ...
[2024-09-20 19:18:54,804 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:18:54" (1/1) ...
[2024-09-20 19:18:54,810 INFO L138 Inliner]: procedures = 14, calls = 10, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0
[2024-09-20 19:18:54,810 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2024-09-20 19:18:54,811 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2024-09-20 19:18:54,811 INFO L270 PluginConnector]: Initializing Boogie Preprocessor...
[2024-09-20 19:18:54,811 INFO L274 PluginConnector]: Boogie Preprocessor initialized
[2024-09-20 19:18:54,841 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:18:54" (1/1) ...
[2024-09-20 19:18:54,841 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:18:54" (1/1) ...
[2024-09-20 19:18:54,843 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:18:54" (1/1) ...
[2024-09-20 19:18:54,854 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].
[2024-09-20 19:18:54,855 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:18:54" (1/1) ...
[2024-09-20 19:18:54,855 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:18:54" (1/1) ...
[2024-09-20 19:18:54,858 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:18:54" (1/1) ...
[2024-09-20 19:18:54,861 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:18:54" (1/1) ...
[2024-09-20 19:18:54,861 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:18:54" (1/1) ...
[2024-09-20 19:18:54,862 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:18:54" (1/1) ...
[2024-09-20 19:18:54,863 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2024-09-20 19:18:54,864 INFO L112 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2024-09-20 19:18:54,864 INFO L270 PluginConnector]: Initializing RCFGBuilder...
[2024-09-20 19:18:54,864 INFO L274 PluginConnector]: RCFGBuilder initialized
[2024-09-20 19:18:54,865 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:18:54" (1/1) ...
[2024-09-20 19:18:54,871 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-09-20 19:18:54,881 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3
[2024-09-20 19:18:54,898 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)
[2024-09-20 19:18:54,901 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
[2024-09-20 19:18:54,944 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2024-09-20 19:18:54,944 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2024-09-20 19:18:54,944 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2024-09-20 19:18:54,945 INFO L130 BoogieDeclarations]: Found specification of procedure main
[2024-09-20 19:18:54,945 INFO L138 BoogieDeclarations]: Found implementation of procedure main
[2024-09-20 19:18:54,945 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0
[2024-09-20 19:18:54,945 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2024-09-20 19:18:54,947 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2024-09-20 19:18:54,947 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2024-09-20 19:18:54,947 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2024-09-20 19:18:54,947 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert
[2024-09-20 19:18:54,947 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert
[2024-09-20 19:18:55,012 INFO L242 CfgBuilder]: Building ICFG
[2024-09-20 19:18:55,015 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation
[2024-09-20 19:18:55,150 INFO L? ?]: Removed 4 outVars from TransFormulas that were not future-live.
[2024-09-20 19:18:55,151 INFO L291 CfgBuilder]: Performing block encoding
[2024-09-20 19:18:55,176 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2024-09-20 19:18:55,177 INFO L318 CfgBuilder]: Removed 1 assume(true) statements.
[2024-09-20 19:18:55,177 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 07:18:55 BoogieIcfgContainer
[2024-09-20 19:18:55,178 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2024-09-20 19:18:55,180 INFO L112 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2024-09-20 19:18:55,181 INFO L270 PluginConnector]: Initializing TraceAbstraction...
[2024-09-20 19:18:55,184 INFO L274 PluginConnector]: TraceAbstraction initialized
[2024-09-20 19:18:55,184 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 07:18:54" (1/3) ...
[2024-09-20 19:18:55,185 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6627235a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 07:18:55, skipping insertion in model container
[2024-09-20 19:18:55,186 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:18:54" (2/3) ...
[2024-09-20 19:18:55,186 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6627235a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 07:18:55, skipping insertion in model container
[2024-09-20 19:18:55,186 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 07:18:55" (3/3) ...
[2024-09-20 19:18:55,187 INFO L112 eAbstractionObserver]: Analyzing ICFG freire1_valuebound2.c
[2024-09-20 19:18:55,202 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2024-09-20 19:18:55,202 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2024-09-20 19:18:55,245 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2024-09-20 19:18:55,251 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;@30d87122, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-09-20 19:18:55,251 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2024-09-20 19:18:55,255 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 15 states have internal predecessors, (20), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5)
[2024-09-20 19:18:55,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17
[2024-09-20 19:18:55,261 INFO L208 NwaCegarLoop]: Found error trace
[2024-09-20 19:18:55,262 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-09-20 19:18:55,262 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-09-20 19:18:55,267 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2024-09-20 19:18:55,267 INFO L85 PathProgramCache]: Analyzing trace with hash -1065431329, now seen corresponding path program 1 times
[2024-09-20 19:18:55,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-09-20 19:18:55,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073369056]
[2024-09-20 19:18:55,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-09-20 19:18:55,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-09-20 19:18:55,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-20 19:18:55,393 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2024-09-20 19:18:55,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-20 19:18:55,402 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5
[2024-09-20 19:18:55,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-20 19:18:55,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-09-20 19:18:55,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-09-20 19:18:55,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073369056]
[2024-09-20 19:18:55,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073369056] provided 1 perfect and 0 imperfect interpolant sequences
[2024-09-20 19:18:55,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-09-20 19:18:55,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2024-09-20 19:18:55,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647049925]
[2024-09-20 19:18:55,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-09-20 19:18:55,417 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2024-09-20 19:18:55,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-09-20 19:18:55,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2024-09-20 19:18:55,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2024-09-20 19:18:55,437 INFO L87 Difference]: Start difference. First operand has 25 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 15 states have internal predecessors, (20), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) 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)
[2024-09-20 19:18:55,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-09-20 19:18:55,455 INFO L93 Difference]: Finished difference Result 42 states and 53 transitions.
[2024-09-20 19:18:55,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states.
[2024-09-20 19:18:55,458 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
[2024-09-20 19:18:55,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-09-20 19:18:55,462 INFO L225 Difference]: With dead ends: 42
[2024-09-20 19:18:55,462 INFO L226 Difference]: Without dead ends: 21
[2024-09-20 19:18:55,464 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
[2024-09-20 19:18:55,467 INFO L434 NwaCegarLoop]: 24 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, 24 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
[2024-09-20 19:18:55,468 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 24 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-09-20 19:18:55,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states.
[2024-09-20 19:18:55,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21.
[2024-09-20 19:18:55,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 13 states have internal predecessors, (14), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2024-09-20 19:18:55,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions.
[2024-09-20 19:18:55,500 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 16
[2024-09-20 19:18:55,500 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-09-20 19:18:55,500 INFO L474 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions.
[2024-09-20 19:18:55,500 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)
[2024-09-20 19:18:55,501 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2024-09-20 19:18:55,501 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions.
[2024-09-20 19:18:55,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17
[2024-09-20 19:18:55,502 INFO L208 NwaCegarLoop]: Found error trace
[2024-09-20 19:18:55,502 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-09-20 19:18:55,502 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2024-09-20 19:18:55,503 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-09-20 19:18:55,503 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2024-09-20 19:18:55,503 INFO L85 PathProgramCache]: Analyzing trace with hash -392820709, now seen corresponding path program 1 times
[2024-09-20 19:18:55,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-09-20 19:18:55,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537421911]
[2024-09-20 19:18:55,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-09-20 19:18:55,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-09-20 19:18:55,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2024-09-20 19:18:55,522 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2024-09-20 19:18:55,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2024-09-20 19:18:55,556 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace
[2024-09-20 19:18:55,556 INFO L326 BasicCegarLoop]: Counterexample is feasible
[2024-09-20 19:18:55,557 INFO L785 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining)
[2024-09-20 19:18:55,559 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2024-09-20 19:18:55,563 INFO L408 BasicCegarLoop]: Path program histogram: [1, 1]
[2024-09-20 19:18:55,580 INFO L165 ceAbstractionStarter]: Computing trace abstraction results
[2024-09-20 19:18:55,586 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.09 07:18:55 BoogieIcfgContainer
[2024-09-20 19:18:55,587 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2024-09-20 19:18:55,587 INFO L112 PluginConnector]: ------------------------Witness Printer----------------------------
[2024-09-20 19:18:55,587 INFO L270 PluginConnector]: Initializing Witness Printer...
[2024-09-20 19:18:55,587 INFO L274 PluginConnector]: Witness Printer initialized
[2024-09-20 19:18:55,588 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 07:18:55" (3/4) ...
[2024-09-20 19:18:55,590 INFO L142 WitnessPrinter]: No result that supports witness generation found
[2024-09-20 19:18:55,591 INFO L131 PluginConnector]: ------------------------ END Witness Printer----------------------------
[2024-09-20 19:18:55,592 INFO L158 Benchmark]: Toolchain (without parser) took 1041.02ms. Allocated memory is still 176.2MB. Free memory was 108.4MB in the beginning and 108.2MB in the end (delta: 126.8kB). Peak memory consumption was 383.5kB. Max. memory is 16.1GB.
[2024-09-20 19:18:55,592 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 104.9MB. Free memory is still 65.9MB. There was no memory consumed. Max. memory is 16.1GB.
[2024-09-20 19:18:55,593 INFO L158 Benchmark]: CACSL2BoogieTranslator took 220.85ms. Allocated memory is still 176.2MB. Free memory was 108.2MB in the beginning and 96.9MB in the end (delta: 11.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB.
[2024-09-20 19:18:55,594 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.48ms. Allocated memory is still 176.2MB. Free memory was 96.8MB in the beginning and 148.1MB in the end (delta: -51.3MB). Peak memory consumption was 6.7MB. Max. memory is 16.1GB.
[2024-09-20 19:18:55,594 INFO L158 Benchmark]: Boogie Preprocessor took 52.93ms. Allocated memory is still 176.2MB. Free memory was 148.1MB in the beginning and 146.7MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
[2024-09-20 19:18:55,594 INFO L158 Benchmark]: RCFGBuilder took 313.98ms. Allocated memory is still 176.2MB. Free memory was 146.7MB in the beginning and 134.8MB in the end (delta: 11.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB.
[2024-09-20 19:18:55,595 INFO L158 Benchmark]: TraceAbstraction took 406.24ms. Allocated memory is still 176.2MB. Free memory was 134.2MB in the beginning and 109.0MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB.
[2024-09-20 19:18:55,596 INFO L158 Benchmark]: Witness Printer took 4.02ms. Allocated memory is still 176.2MB. Free memory was 109.0MB in the beginning and 108.2MB in the end (delta: 752.8kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
[2024-09-20 19:18:55,599 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.19ms. Allocated memory is still 104.9MB. Free memory is still 65.9MB. There was no memory consumed. Max. memory is 16.1GB.
* CACSL2BoogieTranslator took 220.85ms. Allocated memory is still 176.2MB. Free memory was 108.2MB in the beginning and 96.9MB in the end (delta: 11.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB.
* Boogie Procedure Inliner took 36.48ms. Allocated memory is still 176.2MB. Free memory was 96.8MB in the beginning and 148.1MB in the end (delta: -51.3MB). Peak memory consumption was 6.7MB. Max. memory is 16.1GB.
* Boogie Preprocessor took 52.93ms. Allocated memory is still 176.2MB. Free memory was 148.1MB in the beginning and 146.7MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
* RCFGBuilder took 313.98ms. Allocated memory is still 176.2MB. Free memory was 146.7MB in the beginning and 134.8MB in the end (delta: 11.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB.
* TraceAbstraction took 406.24ms. Allocated memory is still 176.2MB. Free memory was 134.2MB in the beginning and 109.0MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB.
* Witness Printer took 4.02ms. Allocated memory is still 176.2MB. Free memory was 109.0MB in the beginning and 108.2MB in the end (delta: 752.8kB). 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
- UnprovableResult [Line: 19]: Unable to prove that a call to reach_error is unreachable
Unable to prove that a call to reach_error is unreachable
Reason: overapproximation of to_int at line 33, overapproximation of someBinaryDOUBLEComparisonOperation at line 28, overapproximation of someBinaryArithmeticDOUBLEoperation at line 29.
Possible FailurePath:
[L25] int r;
[L26] double a, x;
[L27] a = __VERIFIER_nondet_double()
[L28] CALL assume_abort_if_not(a>=0 && a<=2)
VAL [\old(cond)=1]
[L14] COND FALSE !(!cond)
VAL [\old(cond)=1]
[L28] RET assume_abort_if_not(a>=0 && a<=2)
[L29] x = a / 2.0
[L30] r = 0
VAL [r=0]
[L32] COND TRUE 1
VAL [r=0]
[L33] CALL __VERIFIER_assert((int)(r*r - a - r + 2*x) == 0)
VAL [\old(cond)=0]
[L17] COND TRUE !(cond)
VAL [\old(cond)=0]
[L19] reach_error()
VAL [\old(cond)=0]
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 5 procedures, 25 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 24 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2 IncrementalHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 24 mSDtfsCounter, 2 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 7 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 32 NumberOfCodeBlocks, 32 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 15 ConstructedInterpolants, 0 QuantifiedInterpolants, 15 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available
RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces
[2024-09-20 19:18:55,633 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
Using bit-precise analysis
Retrying with bit-precise analysis
### Bit-precise run ###
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/freire1_valuebound2.c -s /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Bitvector.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 2c82dcc3d917c20926ea634368e9542e23b7ae4e7817b33542bbba01403d748d --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-ca4ee3d-m
[2024-09-20 19:18:57,642 INFO L188 SettingsManager]: Resetting all preferences to default values...
[2024-09-20 19:18:57,713 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf
[2024-09-20 19:18:57,718 WARN L101 SettingsManager]: Preference file contains the following unknown settings:
[2024-09-20 19:18:57,719 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2024-09-20 19:18:57,749 INFO L130 SettingsManager]: Preferences different from defaults after loading the file:
[2024-09-20 19:18:57,749 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2024-09-20 19:18:57,750 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2024-09-20 19:18:57,750 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2024-09-20 19:18:57,750 INFO L153 SettingsManager]: * Use memory slicer=true
[2024-09-20 19:18:57,751 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2024-09-20 19:18:57,751 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2024-09-20 19:18:57,752 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2024-09-20 19:18:57,752 INFO L153 SettingsManager]: * Create parallel compositions if possible=false
[2024-09-20 19:18:57,756 INFO L153 SettingsManager]: * Use SBE=true
[2024-09-20 19:18:57,756 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2024-09-20 19:18:57,756 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2024-09-20 19:18:57,757 INFO L153 SettingsManager]: * sizeof long=4
[2024-09-20 19:18:57,757 INFO L153 SettingsManager]: * sizeof POINTER=4
[2024-09-20 19:18:57,757 INFO L153 SettingsManager]: * Check division by zero=IGNORE
[2024-09-20 19:18:57,757 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2024-09-20 19:18:57,758 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2024-09-20 19:18:57,758 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2024-09-20 19:18:57,759 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true
[2024-09-20 19:18:57,759 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true
[2024-09-20 19:18:57,759 INFO L153 SettingsManager]: * Allow undefined functions=false
[2024-09-20 19:18:57,760 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution
[2024-09-20 19:18:57,760 INFO L153 SettingsManager]: * sizeof long double=12
[2024-09-20 19:18:57,760 INFO L153 SettingsManager]: * Check if freed pointer was valid=false
[2024-09-20 19:18:57,760 INFO L153 SettingsManager]: * Use constant arrays=true
[2024-09-20 19:18:57,761 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2024-09-20 19:18:57,761 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements
[2024-09-20 19:18:57,761 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true
[2024-09-20 19:18:57,762 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode
[2024-09-20 19:18:57,762 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-09-20 19:18:57,762 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2024-09-20 19:18:57,763 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2024-09-20 19:18:57,763 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads
[2024-09-20 19:18:57,763 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF
[2024-09-20 19:18:57,763 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt
[2024-09-20 19:18:57,764 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false
[2024-09-20 19:18:57,764 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET
[2024-09-20 19:18:57,764 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO
[2024-09-20 19:18:57,764 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode
[2024-09-20 19:18:57,765 INFO L153 SettingsManager]: * Logic for external solver=AUFBV
[2024-09-20 19:18:57,765 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) )
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2c82dcc3d917c20926ea634368e9542e23b7ae4e7817b33542bbba01403d748d
Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Generate GraphML witnesses -> false
[2024-09-20 19:18:58,059 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2024-09-20 19:18:58,081 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2024-09-20 19:18:58,084 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2024-09-20 19:18:58,086 INFO L270 PluginConnector]: Initializing CDTParser...
[2024-09-20 19:18:58,088 INFO L274 PluginConnector]: CDTParser initialized
[2024-09-20 19:18:58,089 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/nla-digbench-scaling/freire1_valuebound2.c
[2024-09-20 19:18:59,733 INFO L533 CDTParser]: Created temporary CDT project at NULL
[2024-09-20 19:18:59,901 INFO L384 CDTParser]: Found 1 translation units.
[2024-09-20 19:18:59,901 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/freire1_valuebound2.c
[2024-09-20 19:18:59,913 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/1dabe7908/d4fde6f5bf0e4cdb8e39ad9da6c8887e/FLAG8016d1fe8
[2024-09-20 19:18:59,928 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/1dabe7908/d4fde6f5bf0e4cdb8e39ad9da6c8887e
[2024-09-20 19:18:59,932 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2024-09-20 19:18:59,936 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements.
[2024-09-20 19:18:59,937 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2024-09-20 19:18:59,937 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2024-09-20 19:18:59,942 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized
[2024-09-20 19:18:59,943 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 07:18:59" (1/1) ...
[2024-09-20 19:18:59,944 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b35b78d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:18:59, skipping insertion in model container
[2024-09-20 19:18:59,944 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 07:18:59" (1/1) ...
[2024-09-20 19:18:59,962 INFO L175 MainTranslator]: Built tables and reachable declarations
[2024-09-20 19:19:00,108 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/freire1_valuebound2.c[712,725]
[2024-09-20 19:19:00,129 INFO L210 PostProcessor]: Analyzing one entry point: main
[2024-09-20 19:19:00,149 INFO L200 MainTranslator]: Completed pre-run
[2024-09-20 19:19:00,162 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/freire1_valuebound2.c[712,725]
[2024-09-20 19:19:00,168 INFO L210 PostProcessor]: Analyzing one entry point: main
[2024-09-20 19:19:00,205 INFO L204 MainTranslator]: Completed translation
[2024-09-20 19:19:00,206 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:19:00 WrapperNode
[2024-09-20 19:19:00,206 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2024-09-20 19:19:00,207 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2024-09-20 19:19:00,207 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner...
[2024-09-20 19:19:00,207 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized
[2024-09-20 19:19:00,213 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:19:00" (1/1) ...
[2024-09-20 19:19:00,223 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:19:00" (1/1) ...
[2024-09-20 19:19:00,229 INFO L138 Inliner]: procedures = 15, calls = 10, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0
[2024-09-20 19:19:00,229 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2024-09-20 19:19:00,230 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2024-09-20 19:19:00,230 INFO L270 PluginConnector]: Initializing Boogie Preprocessor...
[2024-09-20 19:19:00,231 INFO L274 PluginConnector]: Boogie Preprocessor initialized
[2024-09-20 19:19:00,240 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:19:00" (1/1) ...
[2024-09-20 19:19:00,240 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:19:00" (1/1) ...
[2024-09-20 19:19:00,243 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:19:00" (1/1) ...
[2024-09-20 19:19:00,258 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].
[2024-09-20 19:19:00,261 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:19:00" (1/1) ...
[2024-09-20 19:19:00,261 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:19:00" (1/1) ...
[2024-09-20 19:19:00,267 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:19:00" (1/1) ...
[2024-09-20 19:19:00,270 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:19:00" (1/1) ...
[2024-09-20 19:19:00,271 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:19:00" (1/1) ...
[2024-09-20 19:19:00,272 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:19:00" (1/1) ...
[2024-09-20 19:19:00,274 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2024-09-20 19:19:00,275 INFO L112 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2024-09-20 19:19:00,275 INFO L270 PluginConnector]: Initializing RCFGBuilder...
[2024-09-20 19:19:00,275 INFO L274 PluginConnector]: RCFGBuilder initialized
[2024-09-20 19:19:00,276 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:19:00" (1/1) ...
[2024-09-20 19:19:00,281 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-09-20 19:19:00,293 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3
[2024-09-20 19:19:00,309 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)
[2024-09-20 19:19:00,311 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
[2024-09-20 19:19:00,349 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2024-09-20 19:19:00,349 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0
[2024-09-20 19:19:00,349 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2024-09-20 19:19:00,350 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2024-09-20 19:19:00,350 INFO L130 BoogieDeclarations]: Found specification of procedure main
[2024-09-20 19:19:00,350 INFO L138 BoogieDeclarations]: Found implementation of procedure main
[2024-09-20 19:19:00,350 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2024-09-20 19:19:00,350 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2024-09-20 19:19:00,350 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2024-09-20 19:19:00,350 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2024-09-20 19:19:00,350 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert
[2024-09-20 19:19:00,350 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert
[2024-09-20 19:19:00,405 INFO L242 CfgBuilder]: Building ICFG
[2024-09-20 19:19:00,407 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation
[2024-09-20 19:19:01,194 INFO L? ?]: Removed 4 outVars from TransFormulas that were not future-live.
[2024-09-20 19:19:01,195 INFO L291 CfgBuilder]: Performing block encoding
[2024-09-20 19:19:01,225 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2024-09-20 19:19:01,226 INFO L318 CfgBuilder]: Removed 1 assume(true) statements.
[2024-09-20 19:19:01,226 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 07:19:01 BoogieIcfgContainer
[2024-09-20 19:19:01,226 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2024-09-20 19:19:01,228 INFO L112 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2024-09-20 19:19:01,228 INFO L270 PluginConnector]: Initializing TraceAbstraction...
[2024-09-20 19:19:01,231 INFO L274 PluginConnector]: TraceAbstraction initialized
[2024-09-20 19:19:01,231 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 07:18:59" (1/3) ...
[2024-09-20 19:19:01,231 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ef3cca8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 07:19:01, skipping insertion in model container
[2024-09-20 19:19:01,231 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:19:00" (2/3) ...
[2024-09-20 19:19:01,232 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ef3cca8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 07:19:01, skipping insertion in model container
[2024-09-20 19:19:01,232 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 07:19:01" (3/3) ...
[2024-09-20 19:19:01,233 INFO L112 eAbstractionObserver]: Analyzing ICFG freire1_valuebound2.c
[2024-09-20 19:19:01,247 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2024-09-20 19:19:01,247 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2024-09-20 19:19:01,304 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2024-09-20 19:19:01,313 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;@2afccfe2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-09-20 19:19:01,314 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2024-09-20 19:19:01,317 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 15 states have internal predecessors, (20), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5)
[2024-09-20 19:19:01,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17
[2024-09-20 19:19:01,326 INFO L208 NwaCegarLoop]: Found error trace
[2024-09-20 19:19:01,326 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-09-20 19:19:01,327 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-09-20 19:19:01,335 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2024-09-20 19:19:01,335 INFO L85 PathProgramCache]: Analyzing trace with hash -1065431329, now seen corresponding path program 1 times
[2024-09-20 19:19:01,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF
[2024-09-20 19:19:01,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [240513044]
[2024-09-20 19:19:01,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-09-20 19:19:01,350 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2024-09-20 19:19:01,350 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/mathsat
[2024-09-20 19:19:01,353 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/certificate-witnesses-artifact/automizer/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2024-09-20 19:19:01,354 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process
[2024-09-20 19:19:01,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-20 19:19:01,643 INFO L262 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 1 conjuncts are in the unsatisfiable core
[2024-09-20 19:19:01,647 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2024-09-20 19:19:01,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-09-20 19:19:01,656 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-09-20 19:19:01,656 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2024-09-20 19:19:01,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [240513044]
[2024-09-20 19:19:01,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [240513044] provided 1 perfect and 0 imperfect interpolant sequences
[2024-09-20 19:19:01,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-09-20 19:19:01,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2024-09-20 19:19:01,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424024201]
[2024-09-20 19:19:01,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-09-20 19:19:01,663 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2024-09-20 19:19:01,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2024-09-20 19:19:01,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2024-09-20 19:19:01,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2024-09-20 19:19:01,684 INFO L87 Difference]: Start difference. First operand has 25 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 15 states have internal predecessors, (20), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) 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)
[2024-09-20 19:19:01,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-09-20 19:19:01,709 INFO L93 Difference]: Finished difference Result 42 states and 53 transitions.
[2024-09-20 19:19:01,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states.
[2024-09-20 19:19:01,713 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
[2024-09-20 19:19:01,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-09-20 19:19:01,719 INFO L225 Difference]: With dead ends: 42
[2024-09-20 19:19:01,720 INFO L226 Difference]: Without dead ends: 21
[2024-09-20 19:19:01,723 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2024-09-20 19:19:01,726 INFO L434 NwaCegarLoop]: 24 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, 24 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
[2024-09-20 19:19:01,729 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 24 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-09-20 19:19:01,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states.
[2024-09-20 19:19:01,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21.
[2024-09-20 19:19:01,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 13 states have internal predecessors, (14), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2024-09-20 19:19:01,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions.
[2024-09-20 19:19:01,767 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 16
[2024-09-20 19:19:01,767 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-09-20 19:19:01,767 INFO L474 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions.
[2024-09-20 19:19:01,768 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)
[2024-09-20 19:19:01,769 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2024-09-20 19:19:01,769 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions.
[2024-09-20 19:19:01,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17
[2024-09-20 19:19:01,770 INFO L208 NwaCegarLoop]: Found error trace
[2024-09-20 19:19:01,770 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-09-20 19:19:01,785 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0
[2024-09-20 19:19:01,971 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/certificate-witnesses-artifact/automizer/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2024-09-20 19:19:01,971 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-09-20 19:19:01,972 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2024-09-20 19:19:01,972 INFO L85 PathProgramCache]: Analyzing trace with hash -392820709, now seen corresponding path program 1 times
[2024-09-20 19:19:01,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF
[2024-09-20 19:19:01,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1995049173]
[2024-09-20 19:19:01,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-09-20 19:19:01,973 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2024-09-20 19:19:01,973 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/mathsat
[2024-09-20 19:19:01,976 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/certificate-witnesses-artifact/automizer/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2024-09-20 19:19:01,977 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process
[2024-09-20 19:19:02,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2024-09-20 19:19:02,244 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2024-09-20 19:19:02,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2024-09-20 19:19:02,471 ERROR L246 FreeRefinementEngine]: Caught known exception: Invalid model
[2024-09-20 19:19:02,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1000311864]
[2024-09-20 19:19:02,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-09-20 19:19:02,472 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2024-09-20 19:19:02,472 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/cvc4
[2024-09-20 19:19:02,475 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/certificate-witnesses-artifact/automizer/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null)
[2024-09-20 19:19:02,478 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process
[2024-09-20 19:19:02,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-20 19:19:02,996 INFO L262 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 10 conjuncts are in the unsatisfiable core
[2024-09-20 19:19:02,999 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2024-09-20 19:19:21,261 WARN L293 SmtUtils]: Spent 5.34s on a formula simplification that was a NOOP. DAG size: 17 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)
[2024-09-20 19:19:33,987 WARN L293 SmtUtils]: Spent 8.12s on a formula simplification that was a NOOP. DAG size: 5 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)
[2024-09-20 19:20:30,538 WARN L293 SmtUtils]: Spent 29.59s on a formula simplification that was a NOOP. DAG size: 27 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)
[2024-09-20 19:20:42,635 WARN L293 SmtUtils]: Spent 8.03s on a formula simplification that was a NOOP. DAG size: 17 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)
[2024-09-20 19:20:49,831 WARN L293 SmtUtils]: Spent 7.20s on a formula simplification that was a NOOP. DAG size: 5 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)
[2024-09-20 19:20:57,959 WARN L293 SmtUtils]: Spent 8.13s on a formula simplification that was a NOOP. DAG size: 5 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)
[2024-09-20 19:21:01,992 WARN L854 $PredicateComparison]: unable to prove that (or (= (_ bv1 32) c___VERIFIER_assert_~cond) (and (= (_ bv0 32) c___VERIFIER_assert_~cond) (exists ((v_main_~a~0_BEFORE_CALL_1 (_ FloatingPoint 11 53))) (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv2 32))) (.cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (and (not (= ((_ fp.to_sbv 32) roundTowardZero (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.sub roundNearestTiesToEven .cse0 v_main_~a~0_BEFORE_CALL_1) .cse0) (fp.mul roundNearestTiesToEven .cse1 (fp.div roundNearestTiesToEven v_main_~a~0_BEFORE_CALL_1 ((_ to_fp 11 53) roundNearestTiesToEven 2.0))))) (_ bv0 32))) (fp.leq v_main_~a~0_BEFORE_CALL_1 .cse1) (fp.geq v_main_~a~0_BEFORE_CALL_1 .cse0)))))) is different from false
[2024-09-20 19:21:14,109 WARN L293 SmtUtils]: Spent 8.06s on a formula simplification that was a NOOP. DAG size: 17 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)
[2024-09-20 19:21:25,677 WARN L293 SmtUtils]: Spent 7.36s on a formula simplification that was a NOOP. DAG size: 5 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)
[2024-09-20 19:21:29,710 WARN L854 $PredicateComparison]: unable to prove that (exists ((v_main_~a~0_BEFORE_CALL_1 (_ FloatingPoint 11 53))) (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv2 32))) (.cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (and (not (= ((_ fp.to_sbv 32) roundTowardZero (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.sub roundNearestTiesToEven .cse0 v_main_~a~0_BEFORE_CALL_1) .cse0) (fp.mul roundNearestTiesToEven .cse1 (fp.div roundNearestTiesToEven v_main_~a~0_BEFORE_CALL_1 ((_ to_fp 11 53) roundNearestTiesToEven 2.0))))) (_ bv0 32))) (fp.leq v_main_~a~0_BEFORE_CALL_1 .cse1) (fp.geq v_main_~a~0_BEFORE_CALL_1 .cse0)))) is different from false
[2024-09-20 19:21:33,735 WARN L876 $PredicateComparison]: unable to prove that (exists ((v_main_~a~0_BEFORE_CALL_1 (_ FloatingPoint 11 53))) (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv2 32))) (.cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (and (not (= ((_ fp.to_sbv 32) roundTowardZero (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.sub roundNearestTiesToEven .cse0 v_main_~a~0_BEFORE_CALL_1) .cse0) (fp.mul roundNearestTiesToEven .cse1 (fp.div roundNearestTiesToEven v_main_~a~0_BEFORE_CALL_1 ((_ to_fp 11 53) roundNearestTiesToEven 2.0))))) (_ bv0 32))) (fp.leq v_main_~a~0_BEFORE_CALL_1 .cse1) (fp.geq v_main_~a~0_BEFORE_CALL_1 .cse0)))) is different from true
[2024-09-20 19:21:33,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-09-20 19:21:33,736 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-09-20 19:21:33,736 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2024-09-20 19:21:33,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1995049173]
[2024-09-20 19:21:33,736 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2024-09-20 19:21:33,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1000311864]
[2024-09-20 19:21:33,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1000311864] provided 1 perfect and 0 imperfect interpolant sequences
[2024-09-20 19:21:33,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-09-20 19:21:33,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10
[2024-09-20 19:21:33,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341604781]
[2024-09-20 19:21:33,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-09-20 19:21:33,738 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 11 states
[2024-09-20 19:21:33,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2024-09-20 19:21:33,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2024-09-20 19:21:33,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=8, NotChecked=30, Total=110
[2024-09-20 19:21:33,740 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand has 11 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 8 states have internal predecessors, (10), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2024-09-20 19:21:48,343 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers []
[2024-09-20 19:21:52,586 WARN L854 $PredicateComparison]: unable to prove that (and (= ((_ sign_extend 24) (_ bv0 8)) (select (select |c_#memory_int#0| (_ bv1 32)) (_ bv1 32))) (or (and (= (_ bv0 32) |c___VERIFIER_assert_#in~cond|) (exists ((v_main_~a~0_BEFORE_CALL_1 (_ FloatingPoint 11 53))) (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv2 32))) (.cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (and (not (= ((_ fp.to_sbv 32) roundTowardZero (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.sub roundNearestTiesToEven .cse0 v_main_~a~0_BEFORE_CALL_1) .cse0) (fp.mul roundNearestTiesToEven .cse1 (fp.div roundNearestTiesToEven v_main_~a~0_BEFORE_CALL_1 ((_ to_fp 11 53) roundNearestTiesToEven 2.0))))) (_ bv0 32))) (fp.leq v_main_~a~0_BEFORE_CALL_1 .cse1) (fp.geq v_main_~a~0_BEFORE_CALL_1 .cse0))))) (= (_ bv1 32) |c___VERIFIER_assert_#in~cond|)) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false
[2024-09-20 19:21:56,775 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers []
[2024-09-20 19:22:00,779 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers []
[2024-09-20 19:22:01,869 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers []
[2024-09-20 19:22:04,576 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.82s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers []
[2024-09-20 19:22:10,596 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers []
[2024-09-20 19:22:15,200 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0]
[2024-09-20 19:22:19,451 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers []
[2024-09-20 19:22:23,455 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers []
[2024-09-20 19:22:27,461 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers []
[2024-09-20 19:22:31,467 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers []
[2024-09-20 19:22:35,472 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0]
[2024-09-20 19:22:40,341 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers []
[2024-09-20 19:22:44,346 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0]
[2024-09-20 19:22:44,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-09-20 19:22:44,347 INFO L93 Difference]: Finished difference Result 31 states and 33 transitions.
[2024-09-20 19:22:44,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states.
[2024-09-20 19:22:44,460 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 8 states have internal predecessors, (10), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 16
[2024-09-20 19:22:44,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-09-20 19:22:44,461 INFO L225 Difference]: With dead ends: 31
[2024-09-20 19:22:44,461 INFO L226 Difference]: Without dead ends: 28
[2024-09-20 19:22:44,462 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 86.4s TimeCoverageRelationStatistics Valid=49, Invalid=109, Unknown=10, NotChecked=72, Total=240
[2024-09-20 19:22:44,463 INFO L434 NwaCegarLoop]: 17 mSDtfsCounter, 26 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 9 mSolverCounterUnsat, 11 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 56.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 11 IncrementalHoareTripleChecker+Unknown, 81 IncrementalHoareTripleChecker+Unchecked, 56.7s IncrementalHoareTripleChecker+Time
[2024-09-20 19:22:44,463 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 67 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 48 Invalid, 11 Unknown, 81 Unchecked, 56.7s Time]
[2024-09-20 19:22:44,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states.
[2024-09-20 19:22:44,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28.
[2024-09-20 19:22:44,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 18 states have internal predecessors, (19), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4)
[2024-09-20 19:22:44,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions.
[2024-09-20 19:22:44,478 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 16
[2024-09-20 19:22:44,478 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-09-20 19:22:44,479 INFO L474 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions.
[2024-09-20 19:22:44,479 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 8 states have internal predecessors, (10), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2024-09-20 19:22:44,479 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2024-09-20 19:22:44,479 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions.
[2024-09-20 19:22:44,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24
[2024-09-20 19:22:44,480 INFO L208 NwaCegarLoop]: Found error trace
[2024-09-20 19:22:44,480 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]
[2024-09-20 19:22:44,500 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0
[2024-09-20 19:22:44,689 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/cvc4 --incremental --print-success --lang smt (4)] Forceful destruction successful, exit code 0
[2024-09-20 19:22:44,883 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/certificate-witnesses-artifact/automizer/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,4 /storage/repos/certificate-witnesses-artifact/automizer/cvc4 --incremental --print-success --lang smt
[2024-09-20 19:22:44,884 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-09-20 19:22:44,884 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2024-09-20 19:22:44,885 INFO L85 PathProgramCache]: Analyzing trace with hash -543150969, now seen corresponding path program 1 times
[2024-09-20 19:22:44,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF
[2024-09-20 19:22:44,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [114571995]
[2024-09-20 19:22:44,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-09-20 19:22:44,886 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2024-09-20 19:22:44,886 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/mathsat
[2024-09-20 19:22:44,887 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/certificate-witnesses-artifact/automizer/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2024-09-20 19:22:44,888 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process
[2024-09-20 19:22:45,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2024-09-20 19:22:45,425 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2024-09-20 19:22:45,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2024-09-20 19:22:45,966 ERROR L246 FreeRefinementEngine]: Caught known exception: Invalid model
[2024-09-20 19:22:45,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1318992757]
[2024-09-20 19:22:45,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-09-20 19:22:45,966 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2024-09-20 19:22:45,966 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/cvc4
[2024-09-20 19:22:45,967 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/certificate-witnesses-artifact/automizer/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null)
[2024-09-20 19:22:45,969 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process
[2024-09-20 19:22:48,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-20 19:22:48,839 INFO L262 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 13 conjuncts are in the unsatisfiable core
[2024-09-20 19:22:48,840 INFO L285 TraceCheckSpWp]: Computing forward predicates...