./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_valuebound10.c --full-output --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --witnessprinter.generate.graphml.witnesses false --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version de325976 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/prodbin-ll_valuebound10.c -s /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/certificate-witnesses-artifact/automizer --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ca6b6f09277139d829682a6458fdcdacf72411331aa404fd46248e3dcb9a9e7f --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-de32597-m [2024-09-18 16:32:34,292 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-18 16:32:34,360 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-18 16:32:34,364 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-18 16:32:34,365 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-18 16:32:34,384 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-18 16:32:34,384 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-18 16:32:34,384 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-18 16:32:34,384 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-18 16:32:34,385 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-18 16:32:34,385 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-18 16:32:34,385 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-18 16:32:34,385 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-18 16:32:34,386 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-18 16:32:34,387 INFO L153 SettingsManager]: * Use SBE=true [2024-09-18 16:32:34,387 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-18 16:32:34,387 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-18 16:32:34,387 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-18 16:32:34,387 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-18 16:32:34,387 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-18 16:32:34,388 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-18 16:32:34,390 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-18 16:32:34,390 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-18 16:32:34,391 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-18 16:32:34,391 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-18 16:32:34,391 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-18 16:32:34,391 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-18 16:32:34,391 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-18 16:32:34,391 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-18 16:32:34,391 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-18 16:32:34,392 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-18 16:32:34,392 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-18 16:32:34,392 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-18 16:32:34,392 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-18 16:32:34,392 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-18 16:32:34,393 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-18 16:32:34,393 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-18 16:32:34,393 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-18 16:32:34,394 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-18 16:32:34,394 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-18 16:32:34,394 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-18 16:32:34,394 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-18 16:32:34,394 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ca6b6f09277139d829682a6458fdcdacf72411331aa404fd46248e3dcb9a9e7f Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Generate GraphML witnesses -> false [2024-09-18 16:32:34,601 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-18 16:32:34,618 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-18 16:32:34,620 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-18 16:32:34,621 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-18 16:32:34,621 INFO L274 PluginConnector]: CDTParser initialized [2024-09-18 16:32:34,622 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_valuebound10.c [2024-09-18 16:32:35,830 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-18 16:32:35,965 INFO L384 CDTParser]: Found 1 translation units. [2024-09-18 16:32:35,965 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_valuebound10.c [2024-09-18 16:32:35,971 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/b2d413bc3/5d135e0cdc1c4147ab425d2670b9f56b/FLAG1571b2cbe [2024-09-18 16:32:36,397 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/b2d413bc3/5d135e0cdc1c4147ab425d2670b9f56b [2024-09-18 16:32:36,402 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-18 16:32:36,403 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-18 16:32:36,404 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-18 16:32:36,404 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-18 16:32:36,410 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-18 16:32:36,410 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 04:32:36" (1/1) ... [2024-09-18 16:32:36,411 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@798851f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 04:32:36, skipping insertion in model container [2024-09-18 16:32:36,411 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 04:32:36" (1/1) ... [2024-09-18 16:32:36,425 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-18 16:32:36,531 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/prodbin-ll_valuebound10.c[537,550] [2024-09-18 16:32:36,542 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-18 16:32:36,550 INFO L200 MainTranslator]: Completed pre-run [2024-09-18 16:32:36,560 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/prodbin-ll_valuebound10.c[537,550] [2024-09-18 16:32:36,564 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-18 16:32:36,575 INFO L204 MainTranslator]: Completed translation [2024-09-18 16:32:36,575 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 04:32:36 WrapperNode [2024-09-18 16:32:36,575 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-18 16:32:36,576 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-18 16:32:36,576 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-18 16:32:36,577 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-18 16:32:36,581 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 04:32:36" (1/1) ... [2024-09-18 16:32:36,586 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 04:32:36" (1/1) ... [2024-09-18 16:32:36,590 INFO L138 Inliner]: procedures = 14, calls = 12, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-18 16:32:36,590 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-18 16:32:36,591 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-18 16:32:36,591 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-18 16:32:36,591 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-18 16:32:36,598 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 04:32:36" (1/1) ... [2024-09-18 16:32:36,598 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 04:32:36" (1/1) ... [2024-09-18 16:32:36,598 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 04:32:36" (1/1) ... [2024-09-18 16:32:36,607 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]. [2024-09-18 16:32:36,607 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 04:32:36" (1/1) ... [2024-09-18 16:32:36,607 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 04:32:36" (1/1) ... [2024-09-18 16:32:36,609 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 04:32:36" (1/1) ... [2024-09-18 16:32:36,611 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 04:32:36" (1/1) ... [2024-09-18 16:32:36,612 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 04:32:36" (1/1) ... [2024-09-18 16:32:36,612 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 04:32:36" (1/1) ... [2024-09-18 16:32:36,613 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-18 16:32:36,614 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-18 16:32:36,614 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-18 16:32:36,614 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-18 16:32:36,615 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 04:32:36" (1/1) ... [2024-09-18 16:32:36,620 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-18 16:32:36,631 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-18 16:32:36,642 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) [2024-09-18 16:32:36,643 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 [2024-09-18 16:32:36,674 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-18 16:32:36,674 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-09-18 16:32:36,674 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-09-18 16:32:36,674 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-18 16:32:36,674 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-18 16:32:36,674 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-18 16:32:36,674 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-18 16:32:36,674 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-18 16:32:36,675 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-18 16:32:36,675 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-18 16:32:36,675 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-18 16:32:36,675 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-18 16:32:36,719 INFO L242 CfgBuilder]: Building ICFG [2024-09-18 16:32:36,720 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-18 16:32:36,821 INFO L? ?]: Removed 5 outVars from TransFormulas that were not future-live. [2024-09-18 16:32:36,821 INFO L291 CfgBuilder]: Performing block encoding [2024-09-18 16:32:36,840 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-18 16:32:36,840 INFO L318 CfgBuilder]: Removed 1 assume(true) statements. [2024-09-18 16:32:36,841 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 04:32:36 BoogieIcfgContainer [2024-09-18 16:32:36,841 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-18 16:32:36,842 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-18 16:32:36,842 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-18 16:32:36,845 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-18 16:32:36,845 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.09 04:32:36" (1/3) ... [2024-09-18 16:32:36,845 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65ef59a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 04:32:36, skipping insertion in model container [2024-09-18 16:32:36,845 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 04:32:36" (2/3) ... [2024-09-18 16:32:36,846 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65ef59a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 04:32:36, skipping insertion in model container [2024-09-18 16:32:36,846 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 04:32:36" (3/3) ... [2024-09-18 16:32:36,847 INFO L112 eAbstractionObserver]: Analyzing ICFG prodbin-ll_valuebound10.c [2024-09-18 16:32:36,858 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-18 16:32:36,858 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-18 16:32:36,901 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-18 16:32:36,907 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;@6886add3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-18 16:32:36,907 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-18 16:32:36,911 INFO L276 IsEmpty]: Start isEmpty. Operand has 30 states, 17 states have (on average 1.411764705882353) internal successors, (24), 18 states have internal predecessors, (24), 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) [2024-09-18 16:32:36,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-09-18 16:32:36,923 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 16:32:36,923 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-18 16:32:36,924 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 16:32:36,927 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 16:32:36,928 INFO L85 PathProgramCache]: Analyzing trace with hash -2062108722, now seen corresponding path program 1 times [2024-09-18 16:32:36,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 16:32:36,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323234866] [2024-09-18 16:32:36,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 16:32:36,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 16:32:37,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:32:37,043 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 16:32:37,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:32:37,056 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-18 16:32:37,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:32:37,060 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-18 16:32:37,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:32:37,064 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-18 16:32:37,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:32:37,069 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-18 16:32:37,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 16:32:37,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323234866] [2024-09-18 16:32:37,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323234866] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-18 16:32:37,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-18 16:32:37,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-18 16:32:37,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843849427] [2024-09-18 16:32:37,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-18 16:32:37,075 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-09-18 16:32:37,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 16:32:37,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-09-18 16:32:37,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-18 16:32:37,097 INFO L87 Difference]: Start difference. First operand has 30 states, 17 states have (on average 1.411764705882353) internal successors, (24), 18 states have internal predecessors, (24), 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 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-09-18 16:32:37,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 16:32:37,115 INFO L93 Difference]: Finished difference Result 54 states and 74 transitions. [2024-09-18 16:32:37,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-18 16:32:37,117 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 27 [2024-09-18 16:32:37,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 16:32:37,122 INFO L225 Difference]: With dead ends: 54 [2024-09-18 16:32:37,122 INFO L226 Difference]: Without dead ends: 26 [2024-09-18 16:32:37,124 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-18 16:32:37,127 INFO L434 NwaCegarLoop]: 32 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, 32 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 [2024-09-18 16:32:37,127 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 32 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-18 16:32:37,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2024-09-18 16:32:37,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2024-09-18 16:32:37,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 15 states have (on average 1.2) internal successors, (18), 16 states have internal predecessors, (18), 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) [2024-09-18 16:32:37,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2024-09-18 16:32:37,171 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 27 [2024-09-18 16:32:37,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 16:32:37,171 INFO L474 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2024-09-18 16:32:37,171 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-09-18 16:32:37,172 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 16:32:37,172 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2024-09-18 16:32:37,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-09-18 16:32:37,173 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 16:32:37,173 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-18 16:32:37,173 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-18 16:32:37,173 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 16:32:37,174 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 16:32:37,174 INFO L85 PathProgramCache]: Analyzing trace with hash 1085938704, now seen corresponding path program 1 times [2024-09-18 16:32:37,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 16:32:37,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242609286] [2024-09-18 16:32:37,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 16:32:37,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 16:32:37,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-18 16:32:37,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [74848823] [2024-09-18 16:32:37,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 16:32:37,203 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 16:32:37,203 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-18 16:32:37,205 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) [2024-09-18 16:32:37,207 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-18 16:32:37,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:32:37,258 INFO L262 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-09-18 16:32:37,262 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-18 16:32:37,470 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-18 16:32:37,470 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-18 16:32:37,544 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-18 16:32:37,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 16:32:37,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242609286] [2024-09-18 16:32:37,545 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-18 16:32:37,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [74848823] [2024-09-18 16:32:37,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [74848823] provided 1 perfect and 1 imperfect interpolant sequences [2024-09-18 16:32:37,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-18 16:32:37,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 10 [2024-09-18 16:32:37,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897285696] [2024-09-18 16:32:37,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-18 16:32:37,547 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-18 16:32:37,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 16:32:37,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-18 16:32:37,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-09-18 16:32:37,551 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-09-18 16:32:37,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 16:32:37,639 INFO L93 Difference]: Finished difference Result 37 states and 43 transitions. [2024-09-18 16:32:37,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-18 16:32:37,639 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 27 [2024-09-18 16:32:37,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 16:32:37,640 INFO L225 Difference]: With dead ends: 37 [2024-09-18 16:32:37,640 INFO L226 Difference]: Without dead ends: 35 [2024-09-18 16:32:37,640 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 43 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-09-18 16:32:37,641 INFO L434 NwaCegarLoop]: 21 mSDtfsCounter, 5 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-18 16:32:37,642 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 80 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-18 16:32:37,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2024-09-18 16:32:37,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 32. [2024-09-18 16:32:37,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 21 states have internal predecessors, (22), 8 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-18 16:32:37,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2024-09-18 16:32:37,650 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 27 [2024-09-18 16:32:37,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 16:32:37,651 INFO L474 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2024-09-18 16:32:37,651 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-09-18 16:32:37,651 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 16:32:37,651 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2024-09-18 16:32:37,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-09-18 16:32:37,652 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 16:32:37,652 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-18 16:32:37,665 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-09-18 16:32:37,856 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 [2024-09-18 16:32:37,857 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 16:32:37,857 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 16:32:37,857 INFO L85 PathProgramCache]: Analyzing trace with hash 1368497365, now seen corresponding path program 1 times [2024-09-18 16:32:37,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 16:32:37,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273317093] [2024-09-18 16:32:37,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 16:32:37,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 16:32:37,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:32:37,995 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 16:32:37,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:32:38,000 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-18 16:32:38,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:32:38,002 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-18 16:32:38,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:32:38,008 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-18 16:32:38,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:32:38,038 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-18 16:32:38,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:32:38,045 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-18 16:32:38,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 16:32:38,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273317093] [2024-09-18 16:32:38,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273317093] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-18 16:32:38,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-18 16:32:38,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-09-18 16:32:38,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568423799] [2024-09-18 16:32:38,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-18 16:32:38,046 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-18 16:32:38,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 16:32:38,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-18 16:32:38,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-09-18 16:32:38,047 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2024-09-18 16:32:38,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 16:32:38,101 INFO L93 Difference]: Finished difference Result 42 states and 47 transitions. [2024-09-18 16:32:38,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-18 16:32:38,101 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) Word has length 33 [2024-09-18 16:32:38,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 16:32:38,102 INFO L225 Difference]: With dead ends: 42 [2024-09-18 16:32:38,102 INFO L226 Difference]: Without dead ends: 35 [2024-09-18 16:32:38,102 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-09-18 16:32:38,104 INFO L434 NwaCegarLoop]: 21 mSDtfsCounter, 13 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-18 16:32:38,104 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 87 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-18 16:32:38,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2024-09-18 16:32:38,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 33. [2024-09-18 16:32:38,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 20 states have (on average 1.15) internal successors, (23), 21 states have internal predecessors, (23), 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) [2024-09-18 16:32:38,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2024-09-18 16:32:38,117 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 33 [2024-09-18 16:32:38,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 16:32:38,117 INFO L474 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2024-09-18 16:32:38,117 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2024-09-18 16:32:38,118 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 16:32:38,118 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2024-09-18 16:32:38,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-09-18 16:32:38,120 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 16:32:38,120 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-18 16:32:38,121 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-09-18 16:32:38,121 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 16:32:38,121 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 16:32:38,121 INFO L85 PathProgramCache]: Analyzing trace with hash -65395240, now seen corresponding path program 1 times [2024-09-18 16:32:38,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 16:32:38,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828406823] [2024-09-18 16:32:38,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 16:32:38,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 16:32:38,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-18 16:32:38,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1126379224] [2024-09-18 16:32:38,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 16:32:38,155 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 16:32:38,155 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-18 16:32:38,158 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) [2024-09-18 16:32:38,159 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-18 16:32:38,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:32:38,201 INFO L262 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-09-18 16:32:38,203 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-18 16:32:38,439 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-18 16:32:38,440 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-18 16:32:39,342 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-18 16:32:39,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 16:32:39,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828406823] [2024-09-18 16:32:39,343 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-18 16:32:39,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1126379224] [2024-09-18 16:32:39,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1126379224] provided 1 perfect and 1 imperfect interpolant sequences [2024-09-18 16:32:39,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-18 16:32:39,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 11 [2024-09-18 16:32:39,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174694893] [2024-09-18 16:32:39,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-18 16:32:39,344 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-09-18 16:32:39,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 16:32:39,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-09-18 16:32:39,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-09-18 16:32:39,345 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-09-18 16:32:39,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 16:32:39,502 INFO L93 Difference]: Finished difference Result 45 states and 51 transitions. [2024-09-18 16:32:39,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-18 16:32:39,503 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 36 [2024-09-18 16:32:39,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 16:32:39,504 INFO L225 Difference]: With dead ends: 45 [2024-09-18 16:32:39,504 INFO L226 Difference]: Without dead ends: 43 [2024-09-18 16:32:39,504 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 60 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2024-09-18 16:32:39,505 INFO L434 NwaCegarLoop]: 21 mSDtfsCounter, 5 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-18 16:32:39,505 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 117 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-18 16:32:39,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2024-09-18 16:32:39,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 42. [2024-09-18 16:32:39,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 27 states have (on average 1.1851851851851851) internal successors, (32), 28 states have internal predecessors, (32), 9 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-09-18 16:32:39,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 48 transitions. [2024-09-18 16:32:39,513 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 48 transitions. Word has length 36 [2024-09-18 16:32:39,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 16:32:39,513 INFO L474 AbstractCegarLoop]: Abstraction has 42 states and 48 transitions. [2024-09-18 16:32:39,514 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-09-18 16:32:39,514 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 16:32:39,514 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 48 transitions. [2024-09-18 16:32:39,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-09-18 16:32:39,515 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 16:32:39,515 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-18 16:32:39,528 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-09-18 16:32:39,715 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 16:32:39,716 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 16:32:39,716 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 16:32:39,717 INFO L85 PathProgramCache]: Analyzing trace with hash 1709612122, now seen corresponding path program 1 times [2024-09-18 16:32:39,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 16:32:39,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513911573] [2024-09-18 16:32:39,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 16:32:39,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 16:32:39,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-18 16:32:39,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1839063446] [2024-09-18 16:32:39,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 16:32:39,742 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 16:32:39,742 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-18 16:32:39,743 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) [2024-09-18 16:32:39,744 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-18 16:32:39,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:32:39,789 INFO L262 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-09-18 16:32:39,791 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-18 16:32:40,078 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-18 16:32:40,078 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-18 16:32:40,572 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-18 16:32:40,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 16:32:40,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513911573] [2024-09-18 16:32:40,572 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-18 16:32:40,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1839063446] [2024-09-18 16:32:40,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1839063446] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-18 16:32:40,573 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-18 16:32:40,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 20 [2024-09-18 16:32:40,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4931822] [2024-09-18 16:32:40,573 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-18 16:32:40,573 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-09-18 16:32:40,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 16:32:40,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-09-18 16:32:40,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2024-09-18 16:32:40,575 INFO L87 Difference]: Start difference. First operand 42 states and 48 transitions. Second operand has 20 states, 20 states have (on average 1.6) internal successors, (32), 17 states have internal predecessors, (32), 6 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 6 states have call predecessors, (9), 4 states have call successors, (9) [2024-09-18 16:32:41,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 16:32:41,103 INFO L93 Difference]: Finished difference Result 67 states and 80 transitions. [2024-09-18 16:32:41,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-09-18 16:32:41,104 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.6) internal successors, (32), 17 states have internal predecessors, (32), 6 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 6 states have call predecessors, (9), 4 states have call successors, (9) Word has length 36 [2024-09-18 16:32:41,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 16:32:41,106 INFO L225 Difference]: With dead ends: 67 [2024-09-18 16:32:41,107 INFO L226 Difference]: Without dead ends: 60 [2024-09-18 16:32:41,108 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 51 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=146, Invalid=556, Unknown=0, NotChecked=0, Total=702 [2024-09-18 16:32:41,108 INFO L434 NwaCegarLoop]: 17 mSDtfsCounter, 27 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 219 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-18 16:32:41,108 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 161 Invalid, 232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 219 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-18 16:32:41,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2024-09-18 16:32:41,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2024-09-18 16:32:41,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 41 states have (on average 1.2195121951219512) internal successors, (50), 43 states have internal predecessors, (50), 12 states have call successors, (12), 7 states have call predecessors, (12), 6 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2024-09-18 16:32:41,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 72 transitions. [2024-09-18 16:32:41,127 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 72 transitions. Word has length 36 [2024-09-18 16:32:41,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 16:32:41,127 INFO L474 AbstractCegarLoop]: Abstraction has 60 states and 72 transitions. [2024-09-18 16:32:41,127 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.6) internal successors, (32), 17 states have internal predecessors, (32), 6 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 6 states have call predecessors, (9), 4 states have call successors, (9) [2024-09-18 16:32:41,128 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 16:32:41,128 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 72 transitions. [2024-09-18 16:32:41,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-09-18 16:32:41,128 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 16:32:41,128 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-18 16:32:41,141 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-09-18 16:32:41,332 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 16:32:41,333 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 16:32:41,333 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 16:32:41,333 INFO L85 PathProgramCache]: Analyzing trace with hash 1894068381, now seen corresponding path program 1 times [2024-09-18 16:32:41,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 16:32:41,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244418170] [2024-09-18 16:32:41,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 16:32:41,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 16:32:41,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-18 16:32:41,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1506811522] [2024-09-18 16:32:41,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 16:32:41,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 16:32:41,352 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-18 16:32:41,354 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) [2024-09-18 16:32:41,354 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-18 16:32:41,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:32:41,389 INFO L262 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-09-18 16:32:41,391 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-18 16:32:41,449 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-09-18 16:32:41,449 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-18 16:32:41,508 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-09-18 16:32:41,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 16:32:41,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244418170] [2024-09-18 16:32:41,509 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-18 16:32:41,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1506811522] [2024-09-18 16:32:41,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1506811522] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-18 16:32:41,509 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-18 16:32:41,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10 [2024-09-18 16:32:41,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064422688] [2024-09-18 16:32:41,509 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-18 16:32:41,510 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-09-18 16:32:41,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 16:32:41,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-09-18 16:32:41,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-09-18 16:32:41,511 INFO L87 Difference]: Start difference. First operand 60 states and 72 transitions. Second operand has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 7 states have internal predecessors, (24), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 3 states have call predecessors, (7), 1 states have call successors, (7) [2024-09-18 16:32:41,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 16:32:41,574 INFO L93 Difference]: Finished difference Result 67 states and 78 transitions. [2024-09-18 16:32:41,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-09-18 16:32:41,574 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 7 states have internal predecessors, (24), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 3 states have call predecessors, (7), 1 states have call successors, (7) Word has length 42 [2024-09-18 16:32:41,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 16:32:41,575 INFO L225 Difference]: With dead ends: 67 [2024-09-18 16:32:41,575 INFO L226 Difference]: Without dead ends: 60 [2024-09-18 16:32:41,576 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 73 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-09-18 16:32:41,576 INFO L434 NwaCegarLoop]: 23 mSDtfsCounter, 6 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-18 16:32:41,576 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 123 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-18 16:32:41,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2024-09-18 16:32:41,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 59. [2024-09-18 16:32:41,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 41 states have (on average 1.146341463414634) internal successors, (47), 42 states have internal predecessors, (47), 11 states have call successors, (11), 7 states have call predecessors, (11), 6 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2024-09-18 16:32:41,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 68 transitions. [2024-09-18 16:32:41,603 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 68 transitions. Word has length 42 [2024-09-18 16:32:41,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 16:32:41,604 INFO L474 AbstractCegarLoop]: Abstraction has 59 states and 68 transitions. [2024-09-18 16:32:41,604 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 7 states have internal predecessors, (24), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 3 states have call predecessors, (7), 1 states have call successors, (7) [2024-09-18 16:32:41,605 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 16:32:41,605 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 68 transitions. [2024-09-18 16:32:41,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-09-18 16:32:41,606 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 16:32:41,606 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-18 16:32:41,620 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-09-18 16:32:41,806 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 16:32:41,807 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 16:32:41,807 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 16:32:41,807 INFO L85 PathProgramCache]: Analyzing trace with hash -455011438, now seen corresponding path program 1 times [2024-09-18 16:32:41,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 16:32:41,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519572636] [2024-09-18 16:32:41,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 16:32:41,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 16:32:41,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-18 16:32:41,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1514146781] [2024-09-18 16:32:41,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 16:32:41,831 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 16:32:41,831 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-18 16:32:41,832 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-18 16:32:41,833 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-09-18 16:32:41,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:32:41,867 INFO L262 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-09-18 16:32:41,869 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-18 16:32:42,149 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-09-18 16:32:42,152 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-18 16:32:46,704 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 7 proven. 9 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-09-18 16:32:46,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 16:32:46,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519572636] [2024-09-18 16:32:46,704 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-18 16:32:46,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1514146781] [2024-09-18 16:32:46,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1514146781] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-18 16:32:46,704 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-18 16:32:46,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 18 [2024-09-18 16:32:46,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983154307] [2024-09-18 16:32:46,705 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-18 16:32:46,705 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-09-18 16:32:46,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 16:32:46,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-09-18 16:32:46,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2024-09-18 16:32:46,708 INFO L87 Difference]: Start difference. First operand 59 states and 68 transitions. Second operand has 18 states, 18 states have (on average 2.0555555555555554) internal successors, (37), 17 states have internal predecessors, (37), 6 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2024-09-18 16:32:48,257 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-18 16:32:55,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 16:32:55,583 INFO L93 Difference]: Finished difference Result 90 states and 105 transitions. [2024-09-18 16:32:55,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-09-18 16:32:55,584 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.0555555555555554) internal successors, (37), 17 states have internal predecessors, (37), 6 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) Word has length 45 [2024-09-18 16:32:55,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 16:32:55,585 INFO L225 Difference]: With dead ends: 90 [2024-09-18 16:32:55,585 INFO L226 Difference]: Without dead ends: 88 [2024-09-18 16:32:55,586 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 72 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 9.1s TimeCoverageRelationStatistics Valid=108, Invalid=398, Unknown=0, NotChecked=0, Total=506 [2024-09-18 16:32:55,587 INFO L434 NwaCegarLoop]: 23 mSDtfsCounter, 12 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2024-09-18 16:32:55,587 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 151 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2024-09-18 16:32:55,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2024-09-18 16:32:55,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 71. [2024-09-18 16:32:55,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 50 states have (on average 1.14) internal successors, (57), 52 states have internal predecessors, (57), 13 states have call successors, (13), 8 states have call predecessors, (13), 7 states have return successors, (12), 10 states have call predecessors, (12), 12 states have call successors, (12) [2024-09-18 16:32:55,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 82 transitions. [2024-09-18 16:32:55,631 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 82 transitions. Word has length 45 [2024-09-18 16:32:55,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 16:32:55,633 INFO L474 AbstractCegarLoop]: Abstraction has 71 states and 82 transitions. [2024-09-18 16:32:55,633 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.0555555555555554) internal successors, (37), 17 states have internal predecessors, (37), 6 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2024-09-18 16:32:55,633 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 16:32:55,633 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 82 transitions. [2024-09-18 16:32:55,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-09-18 16:32:55,634 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 16:32:55,634 INFO L216 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-18 16:32:55,649 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-09-18 16:32:55,835 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-09-18 16:32:55,835 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 16:32:55,836 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 16:32:55,836 INFO L85 PathProgramCache]: Analyzing trace with hash -1692331952, now seen corresponding path program 2 times [2024-09-18 16:32:55,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 16:32:55,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096171781] [2024-09-18 16:32:55,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 16:32:55,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 16:32:55,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:32:56,406 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 16:32:56,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:32:56,409 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-18 16:32:56,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:32:56,411 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-18 16:32:56,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:32:56,429 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-18 16:32:56,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:32:56,432 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-18 16:32:56,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:32:56,435 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-18 16:32:56,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:32:56,439 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-09-18 16:32:56,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:32:56,446 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-18 16:32:56,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:32:56,450 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 47 proven. 5 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-09-18 16:32:56,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 16:32:56,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096171781] [2024-09-18 16:32:56,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096171781] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-18 16:32:56,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1840255149] [2024-09-18 16:32:56,451 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-18 16:32:56,451 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 16:32:56,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-18 16:32:56,452 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-18 16:32:56,453 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-09-18 16:32:56,493 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-18 16:32:56,493 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-18 16:32:56,494 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-09-18 16:32:56,496 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-18 16:32:56,662 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 47 proven. 5 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-09-18 16:32:56,662 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-18 16:32:56,991 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 36 proven. 16 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-09-18 16:32:56,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1840255149] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-18 16:32:56,992 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-18 16:32:56,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13, 12] total 24 [2024-09-18 16:32:56,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154708363] [2024-09-18 16:32:56,992 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-18 16:32:56,993 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-09-18 16:32:56,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 16:32:56,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-09-18 16:32:56,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=424, Unknown=0, NotChecked=0, Total=552 [2024-09-18 16:32:56,995 INFO L87 Difference]: Start difference. First operand 71 states and 82 transitions. Second operand has 24 states, 24 states have (on average 2.375) internal successors, (57), 22 states have internal predecessors, (57), 13 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 12 states have call predecessors, (15), 12 states have call successors, (15) [2024-09-18 16:32:57,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 16:32:57,457 INFO L93 Difference]: Finished difference Result 141 states and 167 transitions. [2024-09-18 16:32:57,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-09-18 16:32:57,459 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.375) internal successors, (57), 22 states have internal predecessors, (57), 13 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 12 states have call predecessors, (15), 12 states have call successors, (15) Word has length 63 [2024-09-18 16:32:57,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 16:32:57,460 INFO L225 Difference]: With dead ends: 141 [2024-09-18 16:32:57,460 INFO L226 Difference]: Without dead ends: 67 [2024-09-18 16:32:57,461 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 126 SyntacticMatches, 5 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 368 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=444, Invalid=1278, Unknown=0, NotChecked=0, Total=1722 [2024-09-18 16:32:57,462 INFO L434 NwaCegarLoop]: 33 mSDtfsCounter, 24 mSDsluCounter, 265 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 298 SdHoareTripleChecker+Invalid, 261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-18 16:32:57,463 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 298 Invalid, 261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-18 16:32:57,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2024-09-18 16:32:57,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2024-09-18 16:32:57,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 47 states have (on average 1.0425531914893618) internal successors, (49), 49 states have internal predecessors, (49), 13 states have call successors, (13), 7 states have call predecessors, (13), 6 states have return successors, (11), 10 states have call predecessors, (11), 11 states have call successors, (11) [2024-09-18 16:32:57,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 73 transitions. [2024-09-18 16:32:57,478 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 73 transitions. Word has length 63 [2024-09-18 16:32:57,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 16:32:57,478 INFO L474 AbstractCegarLoop]: Abstraction has 67 states and 73 transitions. [2024-09-18 16:32:57,478 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.375) internal successors, (57), 22 states have internal predecessors, (57), 13 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 12 states have call predecessors, (15), 12 states have call successors, (15) [2024-09-18 16:32:57,478 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 16:32:57,479 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 73 transitions. [2024-09-18 16:32:57,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-09-18 16:32:57,479 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 16:32:57,479 INFO L216 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-18 16:32:57,492 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-09-18 16:32:57,680 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 16:32:57,680 INFO L399 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 16:32:57,680 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 16:32:57,680 INFO L85 PathProgramCache]: Analyzing trace with hash 358652046, now seen corresponding path program 3 times [2024-09-18 16:32:57,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 16:32:57,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292775649] [2024-09-18 16:32:57,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 16:32:57,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 16:32:57,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:32:58,095 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 16:32:58,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:32:58,098 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-18 16:32:58,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:32:58,100 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-18 16:32:58,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:32:58,120 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-18 16:32:58,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:32:58,122 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-18 16:32:58,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:32:58,125 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-18 16:32:58,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:32:58,129 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-09-18 16:32:58,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:32:58,132 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-18 16:32:58,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:32:58,138 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 26 proven. 26 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-09-18 16:32:58,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 16:32:58,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292775649] [2024-09-18 16:32:58,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292775649] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-18 16:32:58,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1853279809] [2024-09-18 16:32:58,140 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-18 16:32:58,140 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 16:32:58,140 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-18 16:32:58,141 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-18 16:32:58,142 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-09-18 16:32:58,183 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-09-18 16:32:58,184 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-18 16:32:58,185 INFO L262 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-09-18 16:32:58,186 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-18 16:32:59,163 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 19 proven. 36 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-09-18 16:32:59,163 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-18 16:33:00,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1853279809] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-18 16:33:00,711 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-18 16:33:00,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 15] total 25 [2024-09-18 16:33:00,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780219393] [2024-09-18 16:33:00,711 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-18 16:33:00,712 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-09-18 16:33:00,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 16:33:00,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-09-18 16:33:00,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=858, Unknown=0, NotChecked=0, Total=992 [2024-09-18 16:33:00,713 INFO L87 Difference]: Start difference. First operand 67 states and 73 transitions. Second operand has 25 states, 25 states have (on average 2.2) internal successors, (55), 23 states have internal predecessors, (55), 11 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 9 states have call predecessors, (13), 9 states have call successors, (13) [2024-09-18 16:33:01,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 16:33:01,472 INFO L93 Difference]: Finished difference Result 77 states and 81 transitions. [2024-09-18 16:33:01,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-09-18 16:33:01,472 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.2) internal successors, (55), 23 states have internal predecessors, (55), 11 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 9 states have call predecessors, (13), 9 states have call successors, (13) Word has length 63 [2024-09-18 16:33:01,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 16:33:01,473 INFO L225 Difference]: With dead ends: 77 [2024-09-18 16:33:01,473 INFO L226 Difference]: Without dead ends: 50 [2024-09-18 16:33:01,473 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 74 SyntacticMatches, 5 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 462 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=282, Invalid=1788, Unknown=0, NotChecked=0, Total=2070 [2024-09-18 16:33:01,474 INFO L434 NwaCegarLoop]: 22 mSDtfsCounter, 24 mSDsluCounter, 308 mSDsCounter, 0 mSdLazyCounter, 440 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 330 SdHoareTripleChecker+Invalid, 448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 440 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-18 16:33:01,474 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 330 Invalid, 448 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 440 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-18 16:33:01,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2024-09-18 16:33:01,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2024-09-18 16:33:01,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 34 states have (on average 1.0294117647058822) internal successors, (35), 35 states have internal predecessors, (35), 10 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2024-09-18 16:33:01,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 54 transitions. [2024-09-18 16:33:01,482 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 54 transitions. Word has length 63 [2024-09-18 16:33:01,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 16:33:01,483 INFO L474 AbstractCegarLoop]: Abstraction has 50 states and 54 transitions. [2024-09-18 16:33:01,483 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.2) internal successors, (55), 23 states have internal predecessors, (55), 11 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 9 states have call predecessors, (13), 9 states have call successors, (13) [2024-09-18 16:33:01,483 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 16:33:01,483 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 54 transitions. [2024-09-18 16:33:01,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-09-18 16:33:01,484 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 16:33:01,484 INFO L216 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-18 16:33:01,497 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-09-18 16:33:01,684 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 16:33:01,685 INFO L399 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 16:33:01,685 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 16:33:01,685 INFO L85 PathProgramCache]: Analyzing trace with hash 499200656, now seen corresponding path program 2 times [2024-09-18 16:33:01,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 16:33:01,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726495810] [2024-09-18 16:33:01,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 16:33:01,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 16:33:01,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:33:02,020 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 16:33:02,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:33:02,021 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-18 16:33:02,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:33:02,022 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-18 16:33:02,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:33:02,040 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-18 16:33:02,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:33:02,046 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-18 16:33:02,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:33:02,049 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-18 16:33:02,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:33:02,051 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-09-18 16:33:02,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:33:02,053 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-18 16:33:02,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:33:02,056 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 32 proven. 20 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-09-18 16:33:02,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 16:33:02,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726495810] [2024-09-18 16:33:02,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726495810] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-18 16:33:02,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [218204850] [2024-09-18 16:33:02,057 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-18 16:33:02,057 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 16:33:02,057 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-18 16:33:02,058 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-18 16:33:02,059 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-09-18 16:33:02,119 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-18 16:33:02,120 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-18 16:33:02,120 INFO L262 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-09-18 16:33:02,122 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-18 16:33:02,295 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 49 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-09-18 16:33:02,295 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-18 16:33:02,826 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 49 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-09-18 16:33:02,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [218204850] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-18 16:33:02,826 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-18 16:33:02,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 30 [2024-09-18 16:33:02,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896804225] [2024-09-18 16:33:02,827 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-18 16:33:02,827 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-09-18 16:33:02,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 16:33:02,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-09-18 16:33:02,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=697, Unknown=0, NotChecked=0, Total=870 [2024-09-18 16:33:02,828 INFO L87 Difference]: Start difference. First operand 50 states and 54 transitions. Second operand has 30 states, 29 states have (on average 2.2758620689655173) internal successors, (66), 26 states have internal predecessors, (66), 17 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 17 states have call predecessors, (20), 16 states have call successors, (20) [2024-09-18 16:33:02,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 16:33:02,994 INFO L93 Difference]: Finished difference Result 52 states and 56 transitions. [2024-09-18 16:33:02,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-09-18 16:33:02,995 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 2.2758620689655173) internal successors, (66), 26 states have internal predecessors, (66), 17 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 17 states have call predecessors, (20), 16 states have call successors, (20) Word has length 63 [2024-09-18 16:33:02,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 16:33:02,995 INFO L225 Difference]: With dead ends: 52 [2024-09-18 16:33:02,995 INFO L226 Difference]: Without dead ends: 0 [2024-09-18 16:33:02,996 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 125 SyntacticMatches, 3 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 364 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=307, Invalid=1025, Unknown=0, NotChecked=0, Total=1332 [2024-09-18 16:33:02,996 INFO L434 NwaCegarLoop]: 25 mSDtfsCounter, 15 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 246 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-18 16:33:02,997 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 246 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-18 16:33:02,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-09-18 16:33:02,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-09-18 16:33:02,997 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) [2024-09-18 16:33:02,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-09-18 16:33:02,997 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 63 [2024-09-18 16:33:02,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 16:33:02,997 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-09-18 16:33:02,997 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 2.2758620689655173) internal successors, (66), 26 states have internal predecessors, (66), 17 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 17 states have call predecessors, (20), 16 states have call successors, (20) [2024-09-18 16:33:02,997 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 16:33:02,997 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-09-18 16:33:02,998 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-09-18 16:33:03,000 INFO L785 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-09-18 16:33:03,006 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-09-18 16:33:03,200 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,9 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 16:33:03,203 INFO L408 BasicCegarLoop]: Path program histogram: [3, 2, 1, 1, 1, 1, 1] [2024-09-18 16:33:03,205 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-09-18 16:33:07,126 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-09-18 16:33:07,140 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.09 04:33:07 BoogieIcfgContainer [2024-09-18 16:33:07,140 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-09-18 16:33:07,141 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-09-18 16:33:07,141 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-09-18 16:33:07,141 INFO L274 PluginConnector]: Witness Printer initialized [2024-09-18 16:33:07,141 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 04:32:36" (3/4) ... [2024-09-18 16:33:07,143 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-09-18 16:33:07,182 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.yml [2024-09-18 16:33:07,183 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-09-18 16:33:07,183 INFO L158 Benchmark]: Toolchain (without parser) took 30780.30ms. Allocated memory was 172.0MB in the beginning and 299.9MB in the end (delta: 127.9MB). Free memory was 116.4MB in the beginning and 154.9MB in the end (delta: -38.5MB). Peak memory consumption was 91.5MB. Max. memory is 16.1GB. [2024-09-18 16:33:07,184 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 172.0MB. Free memory is still 134.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-18 16:33:07,186 INFO L158 Benchmark]: CACSL2BoogieTranslator took 172.21ms. Allocated memory is still 172.0MB. Free memory was 115.9MB in the beginning and 104.9MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-09-18 16:33:07,186 INFO L158 Benchmark]: Boogie Procedure Inliner took 13.85ms. Allocated memory is still 172.0MB. Free memory was 104.9MB in the beginning and 103.9MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-18 16:33:07,186 INFO L158 Benchmark]: Boogie Preprocessor took 22.89ms. Allocated memory is still 172.0MB. Free memory was 103.9MB in the beginning and 101.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-18 16:33:07,186 INFO L158 Benchmark]: RCFGBuilder took 226.96ms. Allocated memory is still 172.0MB. Free memory was 101.8MB in the beginning and 89.2MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-09-18 16:33:07,186 INFO L158 Benchmark]: TraceAbstraction took 30297.95ms. Allocated memory was 172.0MB in the beginning and 299.9MB in the end (delta: 127.9MB). Free memory was 88.7MB in the beginning and 157.1MB in the end (delta: -68.4MB). Peak memory consumption was 127.1MB. Max. memory is 16.1GB. [2024-09-18 16:33:07,187 INFO L158 Benchmark]: Witness Printer took 42.13ms. Allocated memory is still 299.9MB. Free memory was 157.1MB in the beginning and 154.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-18 16:33:07,187 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 172.0MB. Free memory is still 134.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 172.21ms. Allocated memory is still 172.0MB. Free memory was 115.9MB in the beginning and 104.9MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 13.85ms. Allocated memory is still 172.0MB. Free memory was 104.9MB in the beginning and 103.9MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 22.89ms. Allocated memory is still 172.0MB. Free memory was 103.9MB in the beginning and 101.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 226.96ms. Allocated memory is still 172.0MB. Free memory was 101.8MB in the beginning and 89.2MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 30297.95ms. Allocated memory was 172.0MB in the beginning and 299.9MB in the end (delta: 127.9MB). Free memory was 88.7MB in the beginning and 157.1MB in the end (delta: -68.4MB). Peak memory consumption was 127.1MB. Max. memory is 16.1GB. * Witness Printer took 42.13ms. Allocated memory is still 299.9MB. Free memory was 157.1MB in the beginning and 154.9MB 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: 15]: 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, 30 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 26.3s, OverallIterations: 10, TraceHistogramMax: 5, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 11.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 137 SdHoareTripleChecker+Valid, 4.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 131 mSDsluCounter, 1625 SdHoareTripleChecker+Invalid, 4.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1387 mSDsCounter, 64 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1480 IncrementalHoareTripleChecker+Invalid, 1544 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 64 mSolverCounterUnsat, 238 mSDtfsCounter, 1480 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 870 GetRequests, 648 SyntacticMatches, 23 SemanticMatches, 199 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1422 ImplicationChecksByTransitivity, 13.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=71occurred in iteration=7, InterpolantAutomatonStates: 122, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 10 MinimizatonAttempts, 24 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 12.5s InterpolantComputationTime, 810 NumberOfCodeBlocks, 801 NumberOfCodeBlocksAsserted, 23 NumberOfCheckSat, 916 ConstructedInterpolants, 8 QuantifiedInterpolants, 5036 SizeOfPredicates, 12 NumberOfNonLiveVariables, 897 ConjunctsInSsa, 180 ConjunctsInUnsatCore, 20 InterpolantComputations, 4 PerfectInterpolantSequences, 722/874 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: 34]: Loop Invariant Derived loop invariant: ((((((((((((((z == 0) && (y == (b / 2))) && (((long long) a * 2) == x)) && (0 <= a)) && ((b % 2) != 1)) && (1 <= y)) && (a <= 10)) && (y <= 5)) || ((((((((1 <= (b % 2)) && ((z + ((__int128) y * x)) == ((long long) b * a))) && (((long long) a * 2) == x)) && (0 <= a)) && (1 <= b)) && (b <= 10)) && (a <= 10)) && ((((long long) -1 + b) / 2) == y))) || ((((((((z == 0) && (((__int128) y * x) == ((long long) b * a))) && (y <= 2)) && (0 <= a)) && (1 <= b)) && (1 <= y)) && (b <= 10)) && (a <= 10))) || (((((((z == 0) && (b == y)) && (0 <= a)) && (1 <= y)) && (b <= 10)) && (a == x)) && (a <= 10))) || (((((((0 <= y) && ((z + ((__int128) y * x)) == ((long long) b * a))) && (0 <= a)) && (1 <= b)) && (b <= 10)) && (a <= 10)) && (y <= 1))) || ((((((((0 <= y) && ((z + ((__int128) y * x)) == ((long long) b * a))) && (y <= 2)) && (0 <= a)) && (x == ((__int128) z * 2))) && (1 <= b)) && (b <= 10)) && (a <= 10))) || (((((((((a == z) && (1 <= (b % 2))) && (((long long) a * 4) == x)) && (0 <= a)) && (0 <= b)) && (((((long long) -1 + b) / 2) % 2) != 1)) && ((((long long) -1 + b) / 4) == y)) && (b <= 10)) && (a <= 10))) - ProcedureContractResult [Line: 9]: Procedure Contract for assume_abort_if_not Derived contract for procedure assume_abort_if_not. Ensures: (\old(cond) != 0) - ProcedureContractResult [Line: 12]: 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! [2024-09-18 16:33:07,221 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