./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/ps4-ll_valuebound20.c --full-output --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5189fb62 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/certificate-witnesses-artifact/automizer/data/config -Xmx15G -Xms4m -jar /storage/repos/certificate-witnesses-artifact/automizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/certificate-witnesses-artifact/automizer/data -tc /storage/repos/certificate-witnesses-artifact/automizer/config/AutomizerReach.xml -i ../sv-benchmarks/c/nla-digbench-scaling/ps4-ll_valuebound20.c -s /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/certificate-witnesses-artifact/automizer --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1fbe6596ea58bb65874b731661e9f9f596a91893af06dcebaa497157579c7f46 --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-5189fb6-m [2024-09-13 02:59:55,730 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-13 02:59:55,813 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-13 02:59:55,818 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-13 02:59:55,819 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-13 02:59:55,847 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-13 02:59:55,847 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-13 02:59:55,848 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-13 02:59:55,848 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-13 02:59:55,849 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-13 02:59:55,850 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-13 02:59:55,850 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-13 02:59:55,851 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-13 02:59:55,852 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-13 02:59:55,853 INFO L153 SettingsManager]: * Use SBE=true [2024-09-13 02:59:55,853 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-13 02:59:55,853 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-13 02:59:55,854 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-13 02:59:55,854 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-13 02:59:55,854 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-13 02:59:55,855 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-13 02:59:55,858 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-13 02:59:55,858 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-13 02:59:55,859 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-13 02:59:55,859 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-13 02:59:55,859 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-13 02:59:55,860 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-13 02:59:55,860 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-13 02:59:55,860 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-13 02:59:55,860 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-13 02:59:55,861 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-13 02:59:55,861 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-13 02:59:55,861 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-13 02:59:55,861 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-13 02:59:55,862 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-13 02:59:55,862 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-13 02:59:55,862 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-13 02:59:55,863 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-13 02:59:55,863 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-13 02:59:55,863 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-13 02:59:55,863 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-13 02:59:55,864 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-13 02:59:55,865 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/certificate-witnesses-artifact/automizer/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1fbe6596ea58bb65874b731661e9f9f596a91893af06dcebaa497157579c7f46 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 [2024-09-13 02:59:56,098 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-13 02:59:56,121 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-13 02:59:56,123 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-13 02:59:56,124 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-13 02:59:56,125 INFO L274 PluginConnector]: CDTParser initialized [2024-09-13 02:59:56,126 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/nla-digbench-scaling/ps4-ll_valuebound20.c [2024-09-13 02:59:57,485 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-13 02:59:57,658 INFO L384 CDTParser]: Found 1 translation units. [2024-09-13 02:59:57,660 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/ps4-ll_valuebound20.c [2024-09-13 02:59:57,673 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/d18dbdc80/2cf468d9bc484f31baadc52968dd115a/FLAGf56e9b09e [2024-09-13 02:59:58,057 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/d18dbdc80/2cf468d9bc484f31baadc52968dd115a [2024-09-13 02:59:58,059 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-13 02:59:58,060 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-13 02:59:58,061 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-13 02:59:58,061 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-13 02:59:58,068 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-13 02:59:58,068 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.09 02:59:58" (1/1) ... [2024-09-13 02:59:58,069 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7817b510 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 02:59:58, skipping insertion in model container [2024-09-13 02:59:58,069 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.09 02:59:58" (1/1) ... [2024-09-13 02:59:58,087 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-13 02:59:58,239 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/ps4-ll_valuebound20.c[458,471] [2024-09-13 02:59:58,260 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-13 02:59:58,269 INFO L200 MainTranslator]: Completed pre-run [2024-09-13 02:59:58,283 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/ps4-ll_valuebound20.c[458,471] [2024-09-13 02:59:58,291 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-13 02:59:58,307 INFO L204 MainTranslator]: Completed translation [2024-09-13 02:59:58,308 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 02:59:58 WrapperNode [2024-09-13 02:59:58,308 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-13 02:59:58,309 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-13 02:59:58,309 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-13 02:59:58,309 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-13 02:59:58,315 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 02:59:58" (1/1) ... [2024-09-13 02:59:58,321 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 02:59:58" (1/1) ... [2024-09-13 02:59:58,327 INFO L138 Inliner]: procedures = 14, calls = 11, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-13 02:59:58,328 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-13 02:59:58,328 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-13 02:59:58,329 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-13 02:59:58,329 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-13 02:59:58,337 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 02:59:58" (1/1) ... [2024-09-13 02:59:58,338 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 02:59:58" (1/1) ... [2024-09-13 02:59:58,341 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 02:59:58" (1/1) ... [2024-09-13 02:59:58,356 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]. [2024-09-13 02:59:58,360 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 02:59:58" (1/1) ... [2024-09-13 02:59:58,360 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 02:59:58" (1/1) ... [2024-09-13 02:59:58,363 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 02:59:58" (1/1) ... [2024-09-13 02:59:58,366 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 02:59:58" (1/1) ... [2024-09-13 02:59:58,367 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 02:59:58" (1/1) ... [2024-09-13 02:59:58,368 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 02:59:58" (1/1) ... [2024-09-13 02:59:58,370 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-13 02:59:58,371 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-13 02:59:58,371 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-13 02:59:58,372 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-13 02:59:58,373 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 02:59:58" (1/1) ... [2024-09-13 02:59:58,378 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-13 02:59:58,391 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 02:59:58,410 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) [2024-09-13 02:59:58,412 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 [2024-09-13 02:59:58,455 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-13 02:59:58,456 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-09-13 02:59:58,456 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-09-13 02:59:58,456 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-13 02:59:58,456 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-13 02:59:58,456 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-13 02:59:58,457 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-13 02:59:58,458 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-13 02:59:58,458 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-13 02:59:58,458 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-13 02:59:58,458 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-13 02:59:58,459 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-13 02:59:58,516 INFO L242 CfgBuilder]: Building ICFG [2024-09-13 02:59:58,517 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-13 02:59:58,634 INFO L? ?]: Removed 5 outVars from TransFormulas that were not future-live. [2024-09-13 02:59:58,634 INFO L291 CfgBuilder]: Performing block encoding [2024-09-13 02:59:58,657 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-13 02:59:58,658 INFO L318 CfgBuilder]: Removed 1 assume(true) statements. [2024-09-13 02:59:58,659 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.09 02:59:58 BoogieIcfgContainer [2024-09-13 02:59:58,659 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-13 02:59:58,661 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-13 02:59:58,661 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-13 02:59:58,664 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-13 02:59:58,664 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.09 02:59:58" (1/3) ... [2024-09-13 02:59:58,665 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cf417c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.09 02:59:58, skipping insertion in model container [2024-09-13 02:59:58,665 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 02:59:58" (2/3) ... [2024-09-13 02:59:58,665 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cf417c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.09 02:59:58, skipping insertion in model container [2024-09-13 02:59:58,665 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.09 02:59:58" (3/3) ... [2024-09-13 02:59:58,666 INFO L112 eAbstractionObserver]: Analyzing ICFG ps4-ll_valuebound20.c [2024-09-13 02:59:58,684 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-13 02:59:58,684 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-13 02:59:58,743 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-13 02:59:58,751 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;@1ea5f1a7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-13 02:59:58,752 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-13 02:59:58,760 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 15 states have internal predecessors, (20), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-13 02:59:58,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-09-13 02:59:58,773 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 02:59:58,774 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 02:59:58,774 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 02:59:58,783 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 02:59:58,783 INFO L85 PathProgramCache]: Analyzing trace with hash 1238311395, now seen corresponding path program 1 times [2024-09-13 02:59:58,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 02:59:58,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349296757] [2024-09-13 02:59:58,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 02:59:58,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 02:59:58,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:59:58,924 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 02:59:58,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:59:58,934 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-13 02:59:58,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:59:58,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 02:59:58,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 02:59:58,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349296757] [2024-09-13 02:59:58,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349296757] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 02:59:58,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 02:59:58,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-13 02:59:58,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987917429] [2024-09-13 02:59:58,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 02:59:58,950 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-09-13 02:59:58,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 02:59:58,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-09-13 02:59:58,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-13 02:59:58,975 INFO L87 Difference]: Start difference. First operand has 26 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 15 states have internal predecessors, (20), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-13 02:59:58,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 02:59:58,995 INFO L93 Difference]: Finished difference Result 44 states and 58 transitions. [2024-09-13 02:59:58,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-13 02:59:58,997 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 [2024-09-13 02:59:58,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 02:59:59,002 INFO L225 Difference]: With dead ends: 44 [2024-09-13 02:59:59,002 INFO L226 Difference]: Without dead ends: 22 [2024-09-13 02:59:59,005 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 [2024-09-13 02:59:59,008 INFO L434 NwaCegarLoop]: 26 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-13 02:59:59,009 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 26 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-13 02:59:59,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2024-09-13 02:59:59,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2024-09-13 02:59:59,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 13 states have internal predecessors, (14), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-09-13 02:59:59,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2024-09-13 02:59:59,036 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 16 [2024-09-13 02:59:59,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 02:59:59,036 INFO L474 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2024-09-13 02:59:59,037 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) [2024-09-13 02:59:59,037 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 02:59:59,037 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2024-09-13 02:59:59,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-09-13 02:59:59,038 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 02:59:59,038 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 02:59:59,038 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-13 02:59:59,039 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 02:59:59,039 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 02:59:59,039 INFO L85 PathProgramCache]: Analyzing trace with hash 1910922015, now seen corresponding path program 1 times [2024-09-13 02:59:59,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 02:59:59,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106324902] [2024-09-13 02:59:59,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 02:59:59,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 02:59:59,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-13 02:59:59,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [466407631] [2024-09-13 02:59:59,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 02:59:59,072 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 02:59:59,073 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 02:59:59,076 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) [2024-09-13 02:59:59,078 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-13 02:59:59,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:59:59,138 INFO L262 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-09-13 02:59:59,143 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 02:59:59,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 02:59:59,249 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-13 02:59:59,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 02:59:59,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106324902] [2024-09-13 02:59:59,250 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-13 02:59:59,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [466407631] [2024-09-13 02:59:59,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [466407631] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 02:59:59,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 02:59:59,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-13 02:59:59,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842854893] [2024-09-13 02:59:59,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 02:59:59,256 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-13 02:59:59,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 02:59:59,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-13 02:59:59,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-13 02:59:59,257 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-13 02:59:59,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 02:59:59,348 INFO L93 Difference]: Finished difference Result 33 states and 37 transitions. [2024-09-13 02:59:59,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-13 02:59:59,349 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 16 [2024-09-13 02:59:59,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 02:59:59,351 INFO L225 Difference]: With dead ends: 33 [2024-09-13 02:59:59,351 INFO L226 Difference]: Without dead ends: 29 [2024-09-13 02:59:59,351 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-13 02:59:59,352 INFO L434 NwaCegarLoop]: 18 mSDtfsCounter, 4 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-13 02:59:59,353 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 69 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-13 02:59:59,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-09-13 02:59:59,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2024-09-13 02:59:59,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 18 states have internal predecessors, (19), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-09-13 02:59:59,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2024-09-13 02:59:59,362 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 16 [2024-09-13 02:59:59,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 02:59:59,362 INFO L474 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2024-09-13 02:59:59,362 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-13 02:59:59,363 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 02:59:59,363 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2024-09-13 02:59:59,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-09-13 02:59:59,364 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 02:59:59,364 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] [2024-09-13 02:59:59,376 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-09-13 02:59:59,564 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 [2024-09-13 02:59:59,565 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 02:59:59,565 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 02:59:59,565 INFO L85 PathProgramCache]: Analyzing trace with hash 306700420, now seen corresponding path program 1 times [2024-09-13 02:59:59,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 02:59:59,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789392932] [2024-09-13 02:59:59,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 02:59:59,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 02:59:59,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-13 02:59:59,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2080833868] [2024-09-13 02:59:59,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 02:59:59,597 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 02:59:59,597 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 02:59:59,599 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) [2024-09-13 02:59:59,602 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-13 02:59:59,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:59:59,650 INFO L262 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-09-13 02:59:59,653 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 02:59:59,737 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 02:59:59,740 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 02:59:59,841 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-13 02:59:59,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 02:59:59,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789392932] [2024-09-13 02:59:59,842 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-13 02:59:59,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2080833868] [2024-09-13 02:59:59,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2080833868] provided 1 perfect and 1 imperfect interpolant sequences [2024-09-13 02:59:59,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-13 02:59:59,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 7 [2024-09-13 02:59:59,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775269605] [2024-09-13 02:59:59,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 02:59:59,844 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-13 02:59:59,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 02:59:59,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-13 02:59:59,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-09-13 02:59:59,846 INFO L87 Difference]: Start difference. First operand 29 states and 31 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-13 02:59:59,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 02:59:59,894 INFO L93 Difference]: Finished difference Result 35 states and 36 transitions. [2024-09-13 02:59:59,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-13 02:59:59,894 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 23 [2024-09-13 02:59:59,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 02:59:59,895 INFO L225 Difference]: With dead ends: 35 [2024-09-13 02:59:59,896 INFO L226 Difference]: Without dead ends: 30 [2024-09-13 02:59:59,897 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 38 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-09-13 02:59:59,898 INFO L434 NwaCegarLoop]: 19 mSDtfsCounter, 4 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-13 02:59:59,898 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 68 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-13 02:59:59,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-09-13 02:59:59,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2024-09-13 02:59:59,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 19 states have (on average 1.0526315789473684) internal successors, (20), 19 states have internal predecessors, (20), 6 states have call successors, (6), 6 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-09-13 02:59:59,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 30 transitions. [2024-09-13 02:59:59,910 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 30 transitions. Word has length 23 [2024-09-13 02:59:59,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 02:59:59,910 INFO L474 AbstractCegarLoop]: Abstraction has 30 states and 30 transitions. [2024-09-13 02:59:59,911 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-13 02:59:59,911 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 02:59:59,911 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 30 transitions. [2024-09-13 02:59:59,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-09-13 02:59:59,912 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 02:59:59,912 INFO L216 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 02:59:59,924 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-09-13 03:00:00,112 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 [2024-09-13 03:00:00,113 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 03:00:00,113 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:00:00,113 INFO L85 PathProgramCache]: Analyzing trace with hash 749725687, now seen corresponding path program 1 times [2024-09-13 03:00:00,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 03:00:00,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777529833] [2024-09-13 03:00:00,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 03:00:00,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 03:00:00,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-13 03:00:00,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [161734889] [2024-09-13 03:00:00,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 03:00:00,149 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 03:00:00,149 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 03:00:00,154 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) [2024-09-13 03:00:00,165 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-13 03:00:00,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:00:00,209 INFO L262 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-09-13 03:00:00,210 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 03:00:00,315 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-13 03:00:00,316 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 03:00:00,445 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-13 03:00:00,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 03:00:00,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777529833] [2024-09-13 03:00:00,446 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-13 03:00:00,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [161734889] [2024-09-13 03:00:00,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [161734889] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 03:00:00,446 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-13 03:00:00,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2024-09-13 03:00:00,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385497532] [2024-09-13 03:00:00,446 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-13 03:00:00,447 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-09-13 03:00:00,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 03:00:00,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-09-13 03:00:00,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-09-13 03:00:00,448 INFO L87 Difference]: Start difference. First operand 30 states and 30 transitions. Second operand has 10 states, 8 states have (on average 2.625) internal successors, (21), 9 states have internal predecessors, (21), 7 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-09-13 03:00:00,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 03:00:00,552 INFO L93 Difference]: Finished difference Result 45 states and 50 transitions. [2024-09-13 03:00:00,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-09-13 03:00:00,554 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 2.625) internal successors, (21), 9 states have internal predecessors, (21), 7 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) Word has length 29 [2024-09-13 03:00:00,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 03:00:00,555 INFO L225 Difference]: With dead ends: 45 [2024-09-13 03:00:00,555 INFO L226 Difference]: Without dead ends: 39 [2024-09-13 03:00:00,555 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 47 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2024-09-13 03:00:00,556 INFO L434 NwaCegarLoop]: 22 mSDtfsCounter, 1 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-13 03:00:00,556 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 98 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-13 03:00:00,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2024-09-13 03:00:00,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2024-09-13 03:00:00,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 25 states have (on average 1.04) internal successors, (26), 25 states have internal predecessors, (26), 9 states have call successors, (9), 6 states have call predecessors, (9), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-09-13 03:00:00,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2024-09-13 03:00:00,582 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 29 [2024-09-13 03:00:00,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 03:00:00,583 INFO L474 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions. [2024-09-13 03:00:00,584 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 2.625) internal successors, (21), 9 states have internal predecessors, (21), 7 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-09-13 03:00:00,584 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:00:00,586 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2024-09-13 03:00:00,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-09-13 03:00:00,587 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 03:00:00,587 INFO L216 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 03:00:00,603 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-09-13 03:00:00,791 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 [2024-09-13 03:00:00,792 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 03:00:00,792 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:00:00,793 INFO L85 PathProgramCache]: Analyzing trace with hash 608187154, now seen corresponding path program 2 times [2024-09-13 03:00:00,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 03:00:00,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263101779] [2024-09-13 03:00:00,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 03:00:00,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 03:00:00,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-13 03:00:00,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [287860872] [2024-09-13 03:00:00,849 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-13 03:00:00,849 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 03:00:00,849 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 03:00:00,853 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) [2024-09-13 03:00:00,855 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-13 03:00:00,914 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-13 03:00:00,914 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 03:00:00,917 INFO L262 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-09-13 03:00:00,919 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 03:00:01,118 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 9 proven. 43 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-09-13 03:00:01,118 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 03:00:01,437 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 9 proven. 43 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-09-13 03:00:01,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 03:00:01,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263101779] [2024-09-13 03:00:01,438 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-13 03:00:01,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [287860872] [2024-09-13 03:00:01,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [287860872] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 03:00:01,438 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-13 03:00:01,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 22 [2024-09-13 03:00:01,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880603429] [2024-09-13 03:00:01,439 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-13 03:00:01,439 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-09-13 03:00:01,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 03:00:01,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-09-13 03:00:01,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=381, Unknown=0, NotChecked=0, Total=462 [2024-09-13 03:00:01,441 INFO L87 Difference]: Start difference. First operand 39 states and 42 transitions. Second operand has 22 states, 20 states have (on average 2.0) internal successors, (40), 19 states have internal predecessors, (40), 13 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (12), 11 states have call predecessors, (12), 11 states have call successors, (12) [2024-09-13 03:00:01,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 03:00:01,785 INFO L93 Difference]: Finished difference Result 43 states and 48 transitions. [2024-09-13 03:00:01,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-09-13 03:00:01,786 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 20 states have (on average 2.0) internal successors, (40), 19 states have internal predecessors, (40), 13 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (12), 11 states have call predecessors, (12), 11 states have call successors, (12) Word has length 50 [2024-09-13 03:00:01,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 03:00:01,787 INFO L225 Difference]: With dead ends: 43 [2024-09-13 03:00:01,788 INFO L226 Difference]: Without dead ends: 0 [2024-09-13 03:00:01,788 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=139, Invalid=617, Unknown=0, NotChecked=0, Total=756 [2024-09-13 03:00:01,789 INFO L434 NwaCegarLoop]: 22 mSDtfsCounter, 5 mSDsluCounter, 240 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 262 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-13 03:00:01,793 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 262 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-13 03:00:01,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-09-13 03:00:01,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-09-13 03:00:01,794 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) [2024-09-13 03:00:01,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-09-13 03:00:01,794 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 50 [2024-09-13 03:00:01,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 03:00:01,794 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-09-13 03:00:01,794 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 20 states have (on average 2.0) internal successors, (40), 19 states have internal predecessors, (40), 13 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (12), 11 states have call predecessors, (12), 11 states have call successors, (12) [2024-09-13 03:00:01,795 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:00:01,795 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-09-13 03:00:01,795 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-09-13 03:00:01,799 INFO L785 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-09-13 03:00:01,815 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-09-13 03:00:02,000 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 [2024-09-13 03:00:02,002 INFO L408 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1] [2024-09-13 03:00:02,004 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-09-13 03:00:02,300 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-09-13 03:00:02,319 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.09 03:00:02 BoogieIcfgContainer [2024-09-13 03:00:02,319 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-09-13 03:00:02,320 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-09-13 03:00:02,320 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-09-13 03:00:02,322 INFO L274 PluginConnector]: Witness Printer initialized [2024-09-13 03:00:02,322 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.09 02:59:58" (3/4) ... [2024-09-13 03:00:02,324 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-09-13 03:00:02,327 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2024-09-13 03:00:02,327 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2024-09-13 03:00:02,327 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2024-09-13 03:00:02,328 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2024-09-13 03:00:02,332 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2024-09-13 03:00:02,333 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2024-09-13 03:00:02,333 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-09-13 03:00:02,333 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-09-13 03:00:02,410 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.graphml [2024-09-13 03:00:02,411 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.yml [2024-09-13 03:00:02,411 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-09-13 03:00:02,411 INFO L158 Benchmark]: Toolchain (without parser) took 4351.22ms. Allocated memory is still 188.7MB. Free memory was 117.5MB in the beginning and 63.1MB in the end (delta: 54.4MB). Peak memory consumption was 56.1MB. Max. memory is 16.1GB. [2024-09-13 03:00:02,411 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 121.6MB. Free memory is still 84.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-13 03:00:02,412 INFO L158 Benchmark]: CACSL2BoogieTranslator took 246.96ms. Allocated memory is still 188.7MB. Free memory was 117.5MB in the beginning and 106.2MB in the end (delta: 11.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-09-13 03:00:02,412 INFO L158 Benchmark]: Boogie Procedure Inliner took 19.17ms. Allocated memory is still 188.7MB. Free memory was 105.8MB in the beginning and 104.9MB in the end (delta: 903.2kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-13 03:00:02,412 INFO L158 Benchmark]: Boogie Preprocessor took 41.73ms. Allocated memory is still 188.7MB. Free memory was 104.9MB in the beginning and 103.2MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-13 03:00:02,412 INFO L158 Benchmark]: RCFGBuilder took 288.41ms. Allocated memory is still 188.7MB. Free memory was 103.2MB in the beginning and 90.6MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-09-13 03:00:02,413 INFO L158 Benchmark]: TraceAbstraction took 3658.66ms. Allocated memory is still 188.7MB. Free memory was 89.9MB in the beginning and 68.4MB in the end (delta: 21.5MB). Peak memory consumption was 22.6MB. Max. memory is 16.1GB. [2024-09-13 03:00:02,413 INFO L158 Benchmark]: Witness Printer took 90.94ms. Allocated memory is still 188.7MB. Free memory was 68.4MB in the beginning and 63.1MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2024-09-13 03:00:02,418 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 121.6MB. Free memory is still 84.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 246.96ms. Allocated memory is still 188.7MB. Free memory was 117.5MB in the beginning and 106.2MB in the end (delta: 11.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 19.17ms. Allocated memory is still 188.7MB. Free memory was 105.8MB in the beginning and 104.9MB in the end (delta: 903.2kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 41.73ms. Allocated memory is still 188.7MB. Free memory was 104.9MB in the beginning and 103.2MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 288.41ms. Allocated memory is still 188.7MB. Free memory was 103.2MB in the beginning and 90.6MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 3658.66ms. Allocated memory is still 188.7MB. Free memory was 89.9MB in the beginning and 68.4MB in the end (delta: 21.5MB). Peak memory consumption was 22.6MB. Max. memory is 16.1GB. * Witness Printer took 90.94ms. Allocated memory is still 188.7MB. Free memory was 68.4MB in the beginning and 63.1MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 12]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 26 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 3.3s, OverallIterations: 5, TraceHistogramMax: 6, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 18 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 14 mSDsluCounter, 523 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 416 mSDsCounter, 13 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 294 IncrementalHoareTripleChecker+Invalid, 307 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 13 mSolverCounterUnsat, 107 mSDtfsCounter, 294 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 234 GetRequests, 183 SyntacticMatches, 4 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=39occurred in iteration=4, InterpolantAutomatonStates: 36, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 252 NumberOfCodeBlocks, 252 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 228 ConstructedInterpolants, 0 QuantifiedInterpolants, 873 SizeOfPredicates, 7 NumberOfNonLiveVariables, 342 ConjunctsInSsa, 64 ConjunctsInUnsatCore, 8 InterpolantComputations, 3 PerfectInterpolantSequences, 96/190 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 27]: Loop Invariant Derived loop invariant: (((((c + ((__int128) c * y)) == (y + ((__int128) y * y))) && ((((__int128) c * 2) + ((__int128) c * y)) == (((__int128) y * 2) + ((__int128) y * y)))) && (((((((__int128) y * y) * y) * y) + ((__int128) y * y)) + ((((__int128) y * y) * y) * 2)) == ((__int128) x * 4))) && ((c < k) || (((__int128) y * y) == ((__int128) k * y)))) - ProcedureContractResult [Line: 9]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert. Requires: (1 <= \old(cond)) Ensures: (1 <= \old(cond)) RESULT: Ultimate proved your program to be correct! [2024-09-13 03:00:02,441 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE