./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/ps6-ll_valuebound20.c --full-output --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --witnessprinter.generate.graphml.witnesses false --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f1d7dc9d 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/ps6-ll_valuebound20.c -s /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/certificate-witnesses-artifact/automizer --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4b2ee659e7bd0f15011c822a777a938a0e6f5b3a8f826a051cccefa88973daa0 --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-f1d7dc9-m [2024-09-20 13:00:51,153 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-20 13:00:51,221 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-20 13:00:51,224 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-20 13:00:51,225 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-20 13:00:51,247 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-20 13:00:51,248 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-20 13:00:51,248 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-20 13:00:51,249 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-20 13:00:51,250 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-20 13:00:51,250 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-20 13:00:51,250 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-20 13:00:51,251 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-20 13:00:51,251 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-20 13:00:51,251 INFO L153 SettingsManager]: * Use SBE=true [2024-09-20 13:00:51,253 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-20 13:00:51,253 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-20 13:00:51,253 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-20 13:00:51,253 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-20 13:00:51,253 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-20 13:00:51,254 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-20 13:00:51,254 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-20 13:00:51,257 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-20 13:00:51,257 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-20 13:00:51,257 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-20 13:00:51,257 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-20 13:00:51,257 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-20 13:00:51,257 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-20 13:00:51,258 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-20 13:00:51,258 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-20 13:00:51,259 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-20 13:00:51,259 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-20 13:00:51,259 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-20 13:00:51,260 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-20 13:00:51,260 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-20 13:00:51,260 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-20 13:00:51,260 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-20 13:00:51,260 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-20 13:00:51,260 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-20 13:00:51,260 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-20 13:00:51,260 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-20 13:00:51,261 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-20 13:00:51,261 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4b2ee659e7bd0f15011c822a777a938a0e6f5b3a8f826a051cccefa88973daa0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Generate GraphML witnesses -> false [2024-09-20 13:00:51,432 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-20 13:00:51,450 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-20 13:00:51,452 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-20 13:00:51,452 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-20 13:00:51,454 INFO L274 PluginConnector]: CDTParser initialized [2024-09-20 13:00:51,455 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/nla-digbench-scaling/ps6-ll_valuebound20.c [2024-09-20 13:00:52,610 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-20 13:00:52,742 INFO L384 CDTParser]: Found 1 translation units. [2024-09-20 13:00:52,742 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/ps6-ll_valuebound20.c [2024-09-20 13:00:52,747 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/0ea701ca1/b4d6d0c3dedd4a4ba2bf346e2fdce1bc/FLAG55bf79a6e [2024-09-20 13:00:52,761 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/0ea701ca1/b4d6d0c3dedd4a4ba2bf346e2fdce1bc [2024-09-20 13:00:52,763 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-20 13:00:52,764 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-20 13:00:52,765 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-20 13:00:52,765 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-20 13:00:52,769 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-20 13:00:52,770 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:00:52" (1/1) ... [2024-09-20 13:00:52,770 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@225d8f27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:00:52, skipping insertion in model container [2024-09-20 13:00:52,770 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:00:52" (1/1) ... [2024-09-20 13:00:52,790 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-20 13:00:52,904 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/ps6-ll_valuebound20.c[458,471] [2024-09-20 13:00:52,927 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-20 13:00:52,938 INFO L200 MainTranslator]: Completed pre-run [2024-09-20 13:00:52,948 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/ps6-ll_valuebound20.c[458,471] [2024-09-20 13:00:52,958 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-20 13:00:52,973 INFO L204 MainTranslator]: Completed translation [2024-09-20 13:00:52,974 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:00:52 WrapperNode [2024-09-20 13:00:52,974 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-20 13:00:52,975 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-20 13:00:52,976 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-20 13:00:52,976 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-20 13:00:52,981 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:00:52" (1/1) ... [2024-09-20 13:00:52,987 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:00:52" (1/1) ... [2024-09-20 13:00:52,992 INFO L138 Inliner]: procedures = 14, calls = 12, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-20 13:00:52,993 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-20 13:00:52,993 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-20 13:00:52,993 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-20 13:00:52,994 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-20 13:00:53,002 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:00:52" (1/1) ... [2024-09-20 13:00:53,003 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:00:52" (1/1) ... [2024-09-20 13:00:53,004 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:00:52" (1/1) ... [2024-09-20 13:00:53,020 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 13:00:53,024 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:00:52" (1/1) ... [2024-09-20 13:00:53,024 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:00:52" (1/1) ... [2024-09-20 13:00:53,026 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:00:52" (1/1) ... [2024-09-20 13:00:53,028 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:00:52" (1/1) ... [2024-09-20 13:00:53,029 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:00:52" (1/1) ... [2024-09-20 13:00:53,029 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:00:52" (1/1) ... [2024-09-20 13:00:53,030 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-20 13:00:53,031 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-20 13:00:53,031 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-20 13:00:53,031 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-20 13:00:53,032 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:00:52" (1/1) ... [2024-09-20 13:00:53,036 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-20 13:00:53,045 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 13:00:53,062 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 13:00:53,067 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 13:00:53,099 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-20 13:00:53,100 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-09-20 13:00:53,100 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-09-20 13:00:53,100 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-20 13:00:53,100 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-20 13:00:53,100 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-20 13:00:53,100 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-20 13:00:53,100 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-20 13:00:53,101 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-20 13:00:53,101 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-20 13:00:53,101 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-20 13:00:53,101 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-20 13:00:53,150 INFO L242 CfgBuilder]: Building ICFG [2024-09-20 13:00:53,152 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-20 13:00:53,264 INFO L? ?]: Removed 5 outVars from TransFormulas that were not future-live. [2024-09-20 13:00:53,264 INFO L291 CfgBuilder]: Performing block encoding [2024-09-20 13:00:53,279 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-20 13:00:53,279 INFO L318 CfgBuilder]: Removed 1 assume(true) statements. [2024-09-20 13:00:53,280 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:00:53 BoogieIcfgContainer [2024-09-20 13:00:53,280 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-20 13:00:53,282 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-20 13:00:53,282 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-20 13:00:53,284 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-20 13:00:53,285 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 01:00:52" (1/3) ... [2024-09-20 13:00:53,285 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54fe6b70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:00:53, skipping insertion in model container [2024-09-20 13:00:53,285 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:00:52" (2/3) ... [2024-09-20 13:00:53,286 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54fe6b70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:00:53, skipping insertion in model container [2024-09-20 13:00:53,286 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:00:53" (3/3) ... [2024-09-20 13:00:53,287 INFO L112 eAbstractionObserver]: Analyzing ICFG ps6-ll_valuebound20.c [2024-09-20 13:00:53,299 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-20 13:00:53,299 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-20 13:00:53,343 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-20 13:00:53,349 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;@6c0617a0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-20 13:00:53,350 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-20 13:00:53,353 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 15 states have internal predecessors, (20), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-09-20 13:00:53,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-09-20 13:00:53,358 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 13:00:53,359 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 13:00:53,359 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 13:00:53,363 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:00:53,363 INFO L85 PathProgramCache]: Analyzing trace with hash -620791457, now seen corresponding path program 1 times [2024-09-20 13:00:53,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 13:00:53,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822532157] [2024-09-20 13:00:53,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 13:00:53,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 13:00:53,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:00:53,471 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 13:00:53,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:00:53,484 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-20 13:00:53,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:00:53,491 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-20 13:00:53,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:00:53,502 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-20 13:00:53,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 13:00:53,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822532157] [2024-09-20 13:00:53,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1822532157] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-20 13:00:53,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-20 13:00:53,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-20 13:00:53,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619962248] [2024-09-20 13:00:53,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-20 13:00:53,513 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-09-20 13:00:53,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 13:00:53,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-09-20 13:00:53,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-20 13:00:53,539 INFO L87 Difference]: Start difference. First operand has 27 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 15 states have internal predecessors, (20), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) 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, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-20 13:00:53,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 13:00:53,556 INFO L93 Difference]: Finished difference Result 48 states and 66 transitions. [2024-09-20 13:00:53,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-20 13:00:53,558 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, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 21 [2024-09-20 13:00:53,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 13:00:53,563 INFO L225 Difference]: With dead ends: 48 [2024-09-20 13:00:53,563 INFO L226 Difference]: Without dead ends: 23 [2024-09-20 13:00:53,566 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 10 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 13:00:53,568 INFO L434 NwaCegarLoop]: 28 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, 28 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 13:00:53,569 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 28 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-20 13:00:53,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2024-09-20 13:00:53,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2024-09-20 13:00:53,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 13 states have internal predecessors, (14), 7 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-09-20 13:00:53,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2024-09-20 13:00:53,594 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 21 [2024-09-20 13:00:53,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 13:00:53,594 INFO L474 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2024-09-20 13:00:53,594 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, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-20 13:00:53,595 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:00:53,595 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2024-09-20 13:00:53,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-09-20 13:00:53,596 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 13:00:53,596 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 13:00:53,596 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-20 13:00:53,596 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 13:00:53,596 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:00:53,597 INFO L85 PathProgramCache]: Analyzing trace with hash -959298087, now seen corresponding path program 1 times [2024-09-20 13:00:53,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 13:00:53,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047077461] [2024-09-20 13:00:53,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 13:00:53,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 13:00:53,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-20 13:00:53,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2010806797] [2024-09-20 13:00:53,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 13:00:53,621 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 13:00:53,622 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 13:00:53,623 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 13:00:53,625 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-20 13:00:53,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:00:53,680 INFO L262 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-09-20 13:00:53,685 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 13:00:53,741 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-20 13:00:53,741 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-20 13:00:53,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 13:00:53,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047077461] [2024-09-20 13:00:53,742 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-20 13:00:53,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2010806797] [2024-09-20 13:00:53,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2010806797] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-20 13:00:53,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-20 13:00:53,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-20 13:00:53,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127742553] [2024-09-20 13:00:53,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-20 13:00:53,744 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-20 13:00:53,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 13:00:53,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-20 13:00:53,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-20 13:00:53,748 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-09-20 13:00:53,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 13:00:53,803 INFO L93 Difference]: Finished difference Result 34 states and 39 transitions. [2024-09-20 13:00:53,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-20 13:00:53,803 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 21 [2024-09-20 13:00:53,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 13:00:53,804 INFO L225 Difference]: With dead ends: 34 [2024-09-20 13:00:53,804 INFO L226 Difference]: Without dead ends: 30 [2024-09-20 13:00:53,805 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-20 13:00:53,805 INFO L434 NwaCegarLoop]: 20 mSDtfsCounter, 4 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-20 13:00:53,806 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 77 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-20 13:00:53,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-09-20 13:00:53,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2024-09-20 13:00:53,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 18 states have internal predecessors, (19), 8 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-20 13:00:53,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2024-09-20 13:00:53,816 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 21 [2024-09-20 13:00:53,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 13:00:53,816 INFO L474 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2024-09-20 13:00:53,817 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-09-20 13:00:53,817 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:00:53,818 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2024-09-20 13:00:53,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-09-20 13:00:53,819 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 13:00:53,819 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 13:00:53,853 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-09-20 13:00:54,020 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 13:00:54,020 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 13:00:54,021 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:00:54,021 INFO L85 PathProgramCache]: Analyzing trace with hash 1544704875, now seen corresponding path program 1 times [2024-09-20 13:00:54,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 13:00:54,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071488425] [2024-09-20 13:00:54,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 13:00:54,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 13:00:54,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-20 13:00:54,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [204901097] [2024-09-20 13:00:54,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 13:00:54,059 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 13:00:54,059 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 13:00:54,060 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 13:00:54,062 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-20 13:00:54,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:00:54,107 INFO L262 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-09-20 13:00:54,109 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 13:00:54,176 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-20 13:00:54,176 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 13:00:54,255 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-20 13:00:54,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 13:00:54,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071488425] [2024-09-20 13:00:54,256 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-20 13:00:54,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [204901097] [2024-09-20 13:00:54,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [204901097] provided 1 perfect and 1 imperfect interpolant sequences [2024-09-20 13:00:54,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-20 13:00:54,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 7 [2024-09-20 13:00:54,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287898440] [2024-09-20 13:00:54,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-20 13:00:54,257 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-20 13:00:54,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 13:00:54,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-20 13:00:54,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-09-20 13:00:54,258 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-09-20 13:00:54,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 13:00:54,302 INFO L93 Difference]: Finished difference Result 36 states and 38 transitions. [2024-09-20 13:00:54,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-20 13:00:54,303 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 28 [2024-09-20 13:00:54,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 13:00:54,303 INFO L225 Difference]: With dead ends: 36 [2024-09-20 13:00:54,304 INFO L226 Difference]: Without dead ends: 32 [2024-09-20 13:00:54,304 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 48 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-09-20 13:00:54,305 INFO L434 NwaCegarLoop]: 20 mSDtfsCounter, 4 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-20 13:00:54,305 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 73 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-20 13:00:54,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-09-20 13:00:54,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2024-09-20 13:00:54,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 19 states have (on average 1.0526315789473684) internal successors, (20), 19 states have internal predecessors, (20), 8 states have call successors, (8), 6 states have call predecessors, (8), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-20 13:00:54,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 34 transitions. [2024-09-20 13:00:54,315 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 34 transitions. Word has length 28 [2024-09-20 13:00:54,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 13:00:54,315 INFO L474 AbstractCegarLoop]: Abstraction has 32 states and 34 transitions. [2024-09-20 13:00:54,315 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-09-20 13:00:54,316 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:00:54,316 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 34 transitions. [2024-09-20 13:00:54,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-09-20 13:00:54,321 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 13:00:54,321 INFO L216 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 13:00:54,333 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-09-20 13:00:54,521 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 13:00:54,521 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 13:00:54,522 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:00:54,522 INFO L85 PathProgramCache]: Analyzing trace with hash 21814286, now seen corresponding path program 1 times [2024-09-20 13:00:54,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 13:00:54,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116839805] [2024-09-20 13:00:54,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 13:00:54,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 13:00:54,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-20 13:00:54,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1107512020] [2024-09-20 13:00:54,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 13:00:54,547 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 13:00:54,547 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 13:00:54,549 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 13:00:54,550 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-20 13:00:54,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:00:54,588 INFO L262 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-09-20 13:00:54,590 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 13:00:54,739 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-09-20 13:00:54,741 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 13:00:55,140 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-09-20 13:00:55,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 13:00:55,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116839805] [2024-09-20 13:00:55,141 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-20 13:00:55,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1107512020] [2024-09-20 13:00:55,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1107512020] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 13:00:55,141 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-20 13:00:55,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 15 [2024-09-20 13:00:55,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420147060] [2024-09-20 13:00:55,142 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-20 13:00:55,142 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-09-20 13:00:55,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 13:00:55,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-09-20 13:00:55,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2024-09-20 13:00:55,144 INFO L87 Difference]: Start difference. First operand 32 states and 34 transitions. Second operand has 15 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 12 states have internal predecessors, (26), 9 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2024-09-20 13:00:55,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 13:00:55,421 INFO L93 Difference]: Finished difference Result 53 states and 61 transitions. [2024-09-20 13:00:55,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-09-20 13:00:55,422 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 12 states have internal predecessors, (26), 9 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) Word has length 39 [2024-09-20 13:00:55,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 13:00:55,422 INFO L225 Difference]: With dead ends: 53 [2024-09-20 13:00:55,424 INFO L226 Difference]: Without dead ends: 45 [2024-09-20 13:00:55,424 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 62 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2024-09-20 13:00:55,425 INFO L434 NwaCegarLoop]: 20 mSDtfsCounter, 4 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-20 13:00:55,425 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 178 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-20 13:00:55,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2024-09-20 13:00:55,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2024-09-20 13:00:55,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 28 states have (on average 1.0357142857142858) internal successors, (29), 28 states have internal predecessors, (29), 11 states have call successors, (11), 7 states have call predecessors, (11), 5 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-09-20 13:00:55,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2024-09-20 13:00:55,443 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 39 [2024-09-20 13:00:55,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 13:00:55,444 INFO L474 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2024-09-20 13:00:55,444 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 12 states have internal predecessors, (26), 9 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2024-09-20 13:00:55,445 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:00:55,445 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2024-09-20 13:00:55,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-09-20 13:00:55,446 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 13:00:55,446 INFO L216 NwaCegarLoop]: trace histogram [7, 6, 6, 5, 5, 5, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 13:00:55,460 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-09-20 13:00:55,650 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 13:00:55,651 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 13:00:55,651 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:00:55,651 INFO L85 PathProgramCache]: Analyzing trace with hash -244405920, now seen corresponding path program 2 times [2024-09-20 13:00:55,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 13:00:55,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353962283] [2024-09-20 13:00:55,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 13:00:55,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 13:00:55,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-20 13:00:55,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1120513230] [2024-09-20 13:00:55,682 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-20 13:00:55,682 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 13:00:55,683 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 13:00:55,685 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 13:00:55,687 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-20 13:00:55,736 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-20 13:00:55,736 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 13:00:55,737 INFO L262 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-09-20 13:00:55,743 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 13:00:55,890 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 11 proven. 46 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2024-09-20 13:00:55,891 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 13:00:56,158 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 11 proven. 46 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2024-09-20 13:00:56,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 13:00:56,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353962283] [2024-09-20 13:00:56,159 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-20 13:00:56,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1120513230] [2024-09-20 13:00:56,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1120513230] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 13:00:56,159 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-20 13:00:56,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 22 [2024-09-20 13:00:56,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573961385] [2024-09-20 13:00:56,159 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-20 13:00:56,160 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-09-20 13:00:56,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 13:00:56,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-09-20 13:00:56,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=381, Unknown=0, NotChecked=0, Total=462 [2024-09-20 13:00:56,161 INFO L87 Difference]: Start difference. First operand 45 states and 49 transitions. Second operand has 22 states, 20 states have (on average 2.0) internal successors, (40), 19 states have internal predecessors, (40), 13 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (15), 13 states have call predecessors, (15), 13 states have call successors, (15) [2024-09-20 13:00:56,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 13:00:56,419 INFO L93 Difference]: Finished difference Result 50 states and 57 transitions. [2024-09-20 13:00:56,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-09-20 13:00:56,420 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 20 states have (on average 2.0) internal successors, (40), 19 states have internal predecessors, (40), 13 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (15), 13 states have call predecessors, (15), 13 states have call successors, (15) Word has length 60 [2024-09-20 13:00:56,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 13:00:56,420 INFO L225 Difference]: With dead ends: 50 [2024-09-20 13:00:56,420 INFO L226 Difference]: Without dead ends: 0 [2024-09-20 13:00:56,421 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=139, Invalid=617, Unknown=0, NotChecked=0, Total=756 [2024-09-20 13:00:56,422 INFO L434 NwaCegarLoop]: 25 mSDtfsCounter, 6 mSDsluCounter, 291 mSDsCounter, 0 mSdLazyCounter, 221 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 316 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 13:00:56,422 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 316 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 221 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 13:00:56,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-09-20 13:00:56,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-09-20 13:00:56,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-20 13:00:56,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-09-20 13:00:56,423 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 60 [2024-09-20 13:00:56,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 13:00:56,423 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-09-20 13:00:56,423 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 20 states have (on average 2.0) internal successors, (40), 19 states have internal predecessors, (40), 13 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (15), 13 states have call predecessors, (15), 13 states have call successors, (15) [2024-09-20 13:00:56,423 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:00:56,423 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-09-20 13:00:56,423 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-09-20 13:00:56,425 INFO L785 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-09-20 13:00:56,438 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-09-20 13:00:56,626 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 13:00:56,629 INFO L408 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1] [2024-09-20 13:00:56,630 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-09-20 13:00:57,070 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-09-20 13:00:57,085 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.09 01:00:57 BoogieIcfgContainer [2024-09-20 13:00:57,088 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-09-20 13:00:57,088 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-09-20 13:00:57,088 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-09-20 13:00:57,088 INFO L274 PluginConnector]: Witness Printer initialized [2024-09-20 13:00:57,089 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:00:53" (3/4) ... [2024-09-20 13:00:57,091 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-09-20 13:00:57,130 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.yml [2024-09-20 13:00:57,131 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-09-20 13:00:57,131 INFO L158 Benchmark]: Toolchain (without parser) took 4367.15ms. Allocated memory is still 205.5MB. Free memory was 133.4MB in the beginning and 125.5MB in the end (delta: 7.9MB). Peak memory consumption was 9.7MB. Max. memory is 16.1GB. [2024-09-20 13:00:57,131 INFO L158 Benchmark]: CDTParser took 0.08ms. Allocated memory is still 121.6MB. Free memory is still 84.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-20 13:00:57,131 INFO L158 Benchmark]: CACSL2BoogieTranslator took 209.08ms. Allocated memory is still 205.5MB. Free memory was 133.4MB in the beginning and 121.4MB in the end (delta: 12.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-09-20 13:00:57,131 INFO L158 Benchmark]: Boogie Procedure Inliner took 17.94ms. Allocated memory is still 205.5MB. Free memory was 121.4MB in the beginning and 120.8MB in the end (delta: 597.7kB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-20 13:00:57,132 INFO L158 Benchmark]: Boogie Preprocessor took 37.18ms. Allocated memory is still 205.5MB. Free memory was 120.8MB in the beginning and 118.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-20 13:00:57,132 INFO L158 Benchmark]: RCFGBuilder took 248.74ms. Allocated memory is still 205.5MB. Free memory was 118.7MB in the beginning and 104.6MB in the end (delta: 14.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-09-20 13:00:57,132 INFO L158 Benchmark]: TraceAbstraction took 3806.07ms. Allocated memory is still 205.5MB. Free memory was 103.7MB in the beginning and 127.6MB in the end (delta: -23.9MB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-20 13:00:57,132 INFO L158 Benchmark]: Witness Printer took 42.42ms. Allocated memory is still 205.5MB. Free memory was 127.6MB in the beginning and 125.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-20 13:00:57,133 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.08ms. Allocated memory is still 121.6MB. Free memory is still 84.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 209.08ms. Allocated memory is still 205.5MB. Free memory was 133.4MB in the beginning and 121.4MB in the end (delta: 12.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 17.94ms. Allocated memory is still 205.5MB. Free memory was 121.4MB in the beginning and 120.8MB in the end (delta: 597.7kB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 37.18ms. Allocated memory is still 205.5MB. Free memory was 120.8MB in the beginning and 118.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 248.74ms. Allocated memory is still 205.5MB. Free memory was 118.7MB in the beginning and 104.6MB in the end (delta: 14.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 3806.07ms. Allocated memory is still 205.5MB. Free memory was 103.7MB in the beginning and 127.6MB in the end (delta: -23.9MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 42.42ms. Allocated memory is still 205.5MB. Free memory was 127.6MB in the beginning and 125.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 12]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 27 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 3.3s, OverallIterations: 5, TraceHistogramMax: 7, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 23 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 18 mSDsluCounter, 672 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 559 mSDsCounter, 23 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 383 IncrementalHoareTripleChecker+Invalid, 406 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 23 mSolverCounterUnsat, 113 mSDtfsCounter, 383 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 292 GetRequests, 236 SyntacticMatches, 4 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=45occurred in iteration=4, InterpolantAutomatonStates: 39, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 317 NumberOfCodeBlocks, 317 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 288 ConstructedInterpolants, 0 QuantifiedInterpolants, 1347 SizeOfPredicates, 8 NumberOfNonLiveVariables, 396 ConjunctsInSsa, 78 ConjunctsInUnsatCore, 8 InterpolantComputations, 3 PerfectInterpolantSequences, 180/286 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 28]: Loop Invariant Derived loop invariant: (((((c + ((__int128) c * y)) == (y + ((__int128) y * y))) && ((((__int128) c * 2) + ((__int128) c * y)) == (((__int128) y * 2) + ((__int128) y * y)))) && ((((2 * ((((((__int128) y * y) * y) * y) * y) * y)) + (6 * (((((__int128) y * y) * y) * y) * y))) + (5 * ((((__int128) y * y) * y) * y))) == (((__int128) x * 12) + ((__int128) y * y)))) && ((c < k) || (((__int128) y * y) == ((__int128) k * y)))) - ProcedureContractResult [Line: 9]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert. Requires: (1 <= \old(cond)) Ensures: (1 <= \old(cond)) RESULT: Ultimate proved your program to be correct! [2024-09-20 13:00:57,145 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE