./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 ca4ee3dd Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/certificate-witnesses-artifact/automizer/data/config -Xmx15G -Xms4m -jar /storage/repos/certificate-witnesses-artifact/automizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/certificate-witnesses-artifact/automizer/data -tc /storage/repos/certificate-witnesses-artifact/automizer/config/AutomizerReach.xml -i ../sv-benchmarks/c/nla-digbench-scaling/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-ca4ee3d-m [2024-09-20 19:42:07,433 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-20 19:42:07,524 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-20 19:42:07,527 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-20 19:42:07,530 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-20 19:42:07,552 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-20 19:42:07,553 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-20 19:42:07,553 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-20 19:42:07,553 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-20 19:42:07,554 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-20 19:42:07,554 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-20 19:42:07,554 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-20 19:42:07,555 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-20 19:42:07,555 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-20 19:42:07,556 INFO L153 SettingsManager]: * Use SBE=true [2024-09-20 19:42:07,556 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-20 19:42:07,556 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-20 19:42:07,557 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-20 19:42:07,557 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-20 19:42:07,557 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-20 19:42:07,558 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-20 19:42:07,558 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-20 19:42:07,558 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-20 19:42:07,559 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-20 19:42:07,559 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-20 19:42:07,559 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-20 19:42:07,559 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-20 19:42:07,559 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-20 19:42:07,560 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-20 19:42:07,560 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-20 19:42:07,560 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-20 19:42:07,560 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-20 19:42:07,561 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-20 19:42:07,561 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-20 19:42:07,563 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-20 19:42:07,565 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-20 19:42:07,565 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-20 19:42:07,565 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-20 19:42:07,566 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-20 19:42:07,566 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-20 19:42:07,566 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-20 19:42:07,567 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-20 19:42:07,567 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ca6b6f09277139d829682a6458fdcdacf72411331aa404fd46248e3dcb9a9e7f Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Generate GraphML witnesses -> false [2024-09-20 19:42:07,775 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-20 19:42:07,798 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-20 19:42:07,801 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-20 19:42:07,802 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-20 19:42:07,802 INFO L274 PluginConnector]: CDTParser initialized [2024-09-20 19:42:07,803 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_valuebound10.c [2024-09-20 19:42:09,198 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-20 19:42:09,376 INFO L384 CDTParser]: Found 1 translation units. [2024-09-20 19:42:09,377 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_valuebound10.c [2024-09-20 19:42:09,383 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/b0b2fdd32/4a4b7a00463a48eaaf47c40202acfa78/FLAG0e398dcd8 [2024-09-20 19:42:09,396 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/b0b2fdd32/4a4b7a00463a48eaaf47c40202acfa78 [2024-09-20 19:42:09,399 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-20 19:42:09,400 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-20 19:42:09,402 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-20 19:42:09,402 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-20 19:42:09,407 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-20 19:42:09,408 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 07:42:09" (1/1) ... [2024-09-20 19:42:09,411 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69bc0a90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:42:09, skipping insertion in model container [2024-09-20 19:42:09,411 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 07:42:09" (1/1) ... [2024-09-20 19:42:09,429 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-20 19:42:09,565 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] [2024-09-20 19:42:09,580 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-20 19:42:09,588 INFO L200 MainTranslator]: Completed pre-run [2024-09-20 19:42:09,600 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] [2024-09-20 19:42:09,611 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-20 19:42:09,636 INFO L204 MainTranslator]: Completed translation [2024-09-20 19:42:09,636 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:42:09 WrapperNode [2024-09-20 19:42:09,636 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-20 19:42:09,637 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-20 19:42:09,637 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-20 19:42:09,638 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-20 19:42:09,644 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:42:09" (1/1) ... [2024-09-20 19:42:09,651 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:42:09" (1/1) ... [2024-09-20 19:42:09,657 INFO L138 Inliner]: procedures = 14, calls = 12, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-20 19:42:09,658 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-20 19:42:09,658 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-20 19:42:09,659 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-20 19:42:09,659 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-20 19:42:09,668 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:42:09" (1/1) ... [2024-09-20 19:42:09,669 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:42:09" (1/1) ... [2024-09-20 19:42:09,670 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:42:09" (1/1) ... [2024-09-20 19:42:09,686 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-09-20 19:42:09,687 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:42:09" (1/1) ... [2024-09-20 19:42:09,687 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:42:09" (1/1) ... [2024-09-20 19:42:09,690 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:42:09" (1/1) ... [2024-09-20 19:42:09,694 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:42:09" (1/1) ... [2024-09-20 19:42:09,698 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:42:09" (1/1) ... [2024-09-20 19:42:09,699 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:42:09" (1/1) ... [2024-09-20 19:42:09,700 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-20 19:42:09,701 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-20 19:42:09,703 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-20 19:42:09,703 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-20 19:42:09,704 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:42:09" (1/1) ... [2024-09-20 19:42:09,709 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-20 19:42:09,719 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 19:42:09,735 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-09-20 19:42:09,737 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-09-20 19:42:09,776 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-20 19:42:09,777 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-09-20 19:42:09,777 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-09-20 19:42:09,777 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-20 19:42:09,777 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-20 19:42:09,777 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-20 19:42:09,778 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-20 19:42:09,778 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-20 19:42:09,778 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-20 19:42:09,778 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-20 19:42:09,778 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-20 19:42:09,778 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-20 19:42:09,828 INFO L242 CfgBuilder]: Building ICFG [2024-09-20 19:42:09,829 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-20 19:42:10,004 INFO L? ?]: Removed 5 outVars from TransFormulas that were not future-live. [2024-09-20 19:42:10,005 INFO L291 CfgBuilder]: Performing block encoding [2024-09-20 19:42:10,026 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-20 19:42:10,026 INFO L318 CfgBuilder]: Removed 1 assume(true) statements. [2024-09-20 19:42:10,027 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 07:42:10 BoogieIcfgContainer [2024-09-20 19:42:10,027 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-20 19:42:10,029 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-20 19:42:10,029 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-20 19:42:10,032 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-20 19:42:10,033 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 07:42:09" (1/3) ... [2024-09-20 19:42:10,034 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c597612 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 07:42:10, skipping insertion in model container [2024-09-20 19:42:10,034 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:42:09" (2/3) ... [2024-09-20 19:42:10,035 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c597612 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 07:42:10, skipping insertion in model container [2024-09-20 19:42:10,036 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 07:42:10" (3/3) ... [2024-09-20 19:42:10,040 INFO L112 eAbstractionObserver]: Analyzing ICFG prodbin-ll_valuebound10.c [2024-09-20 19:42:10,055 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-20 19:42:10,055 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-20 19:42:10,103 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-20 19:42:10,109 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;@7a4030a7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-20 19:42:10,110 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-20 19:42:10,114 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) [2024-09-20 19:42:10,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-09-20 19:42:10,120 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 19:42:10,121 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] [2024-09-20 19:42:10,122 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 19:42:10,126 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:42:10,127 INFO L85 PathProgramCache]: Analyzing trace with hash -2062108722, now seen corresponding path program 1 times [2024-09-20 19:42:10,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 19:42:10,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953790649] [2024-09-20 19:42:10,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 19:42:10,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 19:42:10,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:42:10,301 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 19:42:10,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:42:10,319 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-20 19:42:10,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:42:10,332 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-20 19:42:10,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:42:10,342 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-20 19:42:10,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:42:10,355 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-20 19:42:10,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 19:42:10,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953790649] [2024-09-20 19:42:10,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953790649] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-20 19:42:10,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-20 19:42:10,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-20 19:42:10,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023565676] [2024-09-20 19:42:10,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-20 19:42:10,371 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-09-20 19:42:10,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 19:42:10,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-09-20 19:42:10,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-20 19:42:10,396 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) [2024-09-20 19:42:10,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 19:42:10,423 INFO L93 Difference]: Finished difference Result 54 states and 74 transitions. [2024-09-20 19:42:10,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-20 19:42:10,425 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 [2024-09-20 19:42:10,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 19:42:10,430 INFO L225 Difference]: With dead ends: 54 [2024-09-20 19:42:10,431 INFO L226 Difference]: Without dead ends: 26 [2024-09-20 19:42:10,433 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 [2024-09-20 19:42:10,436 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 [2024-09-20 19:42:10,437 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] [2024-09-20 19:42:10,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2024-09-20 19:42:10,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2024-09-20 19:42:10,464 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) [2024-09-20 19:42:10,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2024-09-20 19:42:10,466 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 27 [2024-09-20 19:42:10,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 19:42:10,467 INFO L474 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2024-09-20 19:42:10,467 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) [2024-09-20 19:42:10,468 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:42:10,468 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2024-09-20 19:42:10,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-09-20 19:42:10,472 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 19:42:10,472 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] [2024-09-20 19:42:10,473 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-20 19:42:10,473 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 19:42:10,473 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:42:10,474 INFO L85 PathProgramCache]: Analyzing trace with hash 1085938704, now seen corresponding path program 1 times [2024-09-20 19:42:10,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 19:42:10,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818400441] [2024-09-20 19:42:10,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 19:42:10,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 19:42:10,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-20 19:42:10,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2078983632] [2024-09-20 19:42:10,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 19:42:10,524 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 19:42:10,524 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 19:42:10,526 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 19:42:10,527 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-20 19:42:10,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:42:10,583 INFO L262 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-09-20 19:42:10,591 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 19:42:10,818 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-20 19:42:10,818 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 19:42:10,924 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-20 19:42:10,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 19:42:10,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818400441] [2024-09-20 19:42:10,925 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-20 19:42:10,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2078983632] [2024-09-20 19:42:10,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2078983632] provided 1 perfect and 1 imperfect interpolant sequences [2024-09-20 19:42:10,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-20 19:42:10,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 10 [2024-09-20 19:42:10,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535395551] [2024-09-20 19:42:10,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-20 19:42:10,928 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-20 19:42:10,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 19:42:10,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-20 19:42:10,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-09-20 19:42:10,929 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) [2024-09-20 19:42:11,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 19:42:11,053 INFO L93 Difference]: Finished difference Result 37 states and 43 transitions. [2024-09-20 19:42:11,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-20 19:42:11,054 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 [2024-09-20 19:42:11,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 19:42:11,056 INFO L225 Difference]: With dead ends: 37 [2024-09-20 19:42:11,056 INFO L226 Difference]: Without dead ends: 35 [2024-09-20 19:42:11,058 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 [2024-09-20 19:42:11,059 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 [2024-09-20 19:42:11,060 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] [2024-09-20 19:42:11,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2024-09-20 19:42:11,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 32. [2024-09-20 19:42:11,069 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) [2024-09-20 19:42:11,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2024-09-20 19:42:11,070 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 27 [2024-09-20 19:42:11,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 19:42:11,072 INFO L474 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2024-09-20 19:42:11,072 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) [2024-09-20 19:42:11,072 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:42:11,073 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2024-09-20 19:42:11,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-09-20 19:42:11,073 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 19:42:11,074 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] [2024-09-20 19:42:11,087 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-09-20 19:42:11,275 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 19:42:11,276 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 19:42:11,277 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:42:11,277 INFO L85 PathProgramCache]: Analyzing trace with hash 1368497365, now seen corresponding path program 1 times [2024-09-20 19:42:11,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 19:42:11,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946952072] [2024-09-20 19:42:11,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 19:42:11,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 19:42:11,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:42:11,478 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 19:42:11,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:42:11,487 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-20 19:42:11,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:42:11,490 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-20 19:42:11,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:42:11,493 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-20 19:42:11,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:42:11,520 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-20 19:42:11,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:42:11,526 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-20 19:42:11,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 19:42:11,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946952072] [2024-09-20 19:42:11,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946952072] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-20 19:42:11,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-20 19:42:11,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-09-20 19:42:11,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155089435] [2024-09-20 19:42:11,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-20 19:42:11,528 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-20 19:42:11,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 19:42:11,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-20 19:42:11,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-09-20 19:42:11,530 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) [2024-09-20 19:42:11,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 19:42:11,595 INFO L93 Difference]: Finished difference Result 42 states and 47 transitions. [2024-09-20 19:42:11,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-20 19:42:11,596 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 [2024-09-20 19:42:11,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 19:42:11,597 INFO L225 Difference]: With dead ends: 42 [2024-09-20 19:42:11,597 INFO L226 Difference]: Without dead ends: 35 [2024-09-20 19:42:11,597 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 [2024-09-20 19:42:11,598 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, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 19:42:11,598 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 87 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 19:42:11,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2024-09-20 19:42:11,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 33. [2024-09-20 19:42:11,605 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) [2024-09-20 19:42:11,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2024-09-20 19:42:11,606 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 33 [2024-09-20 19:42:11,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 19:42:11,607 INFO L474 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2024-09-20 19:42:11,607 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) [2024-09-20 19:42:11,607 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:42:11,607 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2024-09-20 19:42:11,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-09-20 19:42:11,608 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 19:42:11,609 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] [2024-09-20 19:42:11,609 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-09-20 19:42:11,609 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 19:42:11,609 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:42:11,609 INFO L85 PathProgramCache]: Analyzing trace with hash -65395240, now seen corresponding path program 1 times [2024-09-20 19:42:11,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 19:42:11,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836503742] [2024-09-20 19:42:11,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 19:42:11,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 19:42:11,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-20 19:42:11,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1082415593] [2024-09-20 19:42:11,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 19:42:11,649 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 19:42:11,649 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 19:42:11,653 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 19:42:11,654 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-20 19:42:11,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:42:11,699 INFO L262 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-09-20 19:42:11,702 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 19:42:11,980 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-20 19:42:11,980 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 19:42:13,040 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-20 19:42:13,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 19:42:13,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836503742] [2024-09-20 19:42:13,041 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-20 19:42:13,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1082415593] [2024-09-20 19:42:13,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1082415593] provided 1 perfect and 1 imperfect interpolant sequences [2024-09-20 19:42:13,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-20 19:42:13,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 11 [2024-09-20 19:42:13,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231813786] [2024-09-20 19:42:13,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-20 19:42:13,048 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-09-20 19:42:13,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 19:42:13,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-09-20 19:42:13,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-09-20 19:42:13,050 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) [2024-09-20 19:42:13,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 19:42:13,246 INFO L93 Difference]: Finished difference Result 45 states and 51 transitions. [2024-09-20 19:42:13,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-20 19:42:13,247 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 [2024-09-20 19:42:13,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 19:42:13,248 INFO L225 Difference]: With dead ends: 45 [2024-09-20 19:42:13,248 INFO L226 Difference]: Without dead ends: 43 [2024-09-20 19:42:13,248 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 60 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2024-09-20 19:42:13,249 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 [2024-09-20 19:42:13,249 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] [2024-09-20 19:42:13,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2024-09-20 19:42:13,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 42. [2024-09-20 19:42:13,260 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) [2024-09-20 19:42:13,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 48 transitions. [2024-09-20 19:42:13,261 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 48 transitions. Word has length 36 [2024-09-20 19:42:13,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 19:42:13,261 INFO L474 AbstractCegarLoop]: Abstraction has 42 states and 48 transitions. [2024-09-20 19:42:13,262 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) [2024-09-20 19:42:13,262 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:42:13,262 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 48 transitions. [2024-09-20 19:42:13,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-09-20 19:42:13,263 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 19:42:13,263 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] [2024-09-20 19:42:13,281 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-09-20 19:42:13,467 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 [2024-09-20 19:42:13,468 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 19:42:13,469 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:42:13,469 INFO L85 PathProgramCache]: Analyzing trace with hash 1709612122, now seen corresponding path program 1 times [2024-09-20 19:42:13,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 19:42:13,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621155328] [2024-09-20 19:42:13,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 19:42:13,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 19:42:13,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-20 19:42:13,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [446004617] [2024-09-20 19:42:13,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 19:42:13,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 19:42:13,498 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 19:42:13,503 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 19:42:13,505 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-20 19:42:13,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:42:13,556 INFO L262 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-09-20 19:42:13,558 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 19:42:13,933 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-20 19:42:13,934 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 19:42:14,571 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-20 19:42:14,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 19:42:14,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621155328] [2024-09-20 19:42:14,572 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-20 19:42:14,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [446004617] [2024-09-20 19:42:14,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [446004617] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 19:42:14,573 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-20 19:42:14,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 20 [2024-09-20 19:42:14,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107997717] [2024-09-20 19:42:14,573 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-20 19:42:14,574 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-09-20 19:42:14,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 19:42:14,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-09-20 19:42:14,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2024-09-20 19:42:14,575 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) [2024-09-20 19:42:15,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 19:42:15,212 INFO L93 Difference]: Finished difference Result 67 states and 80 transitions. [2024-09-20 19:42:15,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-09-20 19:42:15,213 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 [2024-09-20 19:42:15,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 19:42:15,215 INFO L225 Difference]: With dead ends: 67 [2024-09-20 19:42:15,216 INFO L226 Difference]: Without dead ends: 60 [2024-09-20 19:42:15,216 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 51 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=146, Invalid=556, Unknown=0, NotChecked=0, Total=702 [2024-09-20 19:42:15,217 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 [2024-09-20 19:42:15,217 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] [2024-09-20 19:42:15,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2024-09-20 19:42:15,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2024-09-20 19:42:15,249 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) [2024-09-20 19:42:15,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 72 transitions. [2024-09-20 19:42:15,252 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 72 transitions. Word has length 36 [2024-09-20 19:42:15,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 19:42:15,252 INFO L474 AbstractCegarLoop]: Abstraction has 60 states and 72 transitions. [2024-09-20 19:42:15,252 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) [2024-09-20 19:42:15,253 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:42:15,253 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 72 transitions. [2024-09-20 19:42:15,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-09-20 19:42:15,254 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 19:42:15,254 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] [2024-09-20 19:42:15,271 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-09-20 19:42:15,454 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 [2024-09-20 19:42:15,455 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 19:42:15,455 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:42:15,455 INFO L85 PathProgramCache]: Analyzing trace with hash 1894068381, now seen corresponding path program 1 times [2024-09-20 19:42:15,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 19:42:15,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038835210] [2024-09-20 19:42:15,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 19:42:15,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 19:42:15,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-20 19:42:15,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [27583263] [2024-09-20 19:42:15,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 19:42:15,475 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 19:42:15,476 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 19:42:15,477 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 19:42:15,479 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-20 19:42:15,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:42:15,521 INFO L262 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-09-20 19:42:15,523 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 19:42:15,588 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-09-20 19:42:15,588 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 19:42:15,673 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-09-20 19:42:15,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 19:42:15,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038835210] [2024-09-20 19:42:15,674 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-20 19:42:15,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [27583263] [2024-09-20 19:42:15,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [27583263] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 19:42:15,675 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-20 19:42:15,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10 [2024-09-20 19:42:15,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139748186] [2024-09-20 19:42:15,675 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-20 19:42:15,676 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-09-20 19:42:15,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 19:42:15,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-09-20 19:42:15,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-09-20 19:42:15,677 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) [2024-09-20 19:42:15,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 19:42:15,764 INFO L93 Difference]: Finished difference Result 67 states and 78 transitions. [2024-09-20 19:42:15,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-09-20 19:42:15,765 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 [2024-09-20 19:42:15,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 19:42:15,766 INFO L225 Difference]: With dead ends: 67 [2024-09-20 19:42:15,766 INFO L226 Difference]: Without dead ends: 60 [2024-09-20 19:42:15,767 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 [2024-09-20 19:42:15,767 INFO L434 NwaCegarLoop]: 23 mSDtfsCounter, 6 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 19:42:15,768 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 123 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 19:42:15,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2024-09-20 19:42:15,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 59. [2024-09-20 19:42:15,788 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) [2024-09-20 19:42:15,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 68 transitions. [2024-09-20 19:42:15,790 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 68 transitions. Word has length 42 [2024-09-20 19:42:15,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 19:42:15,792 INFO L474 AbstractCegarLoop]: Abstraction has 59 states and 68 transitions. [2024-09-20 19:42:15,793 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) [2024-09-20 19:42:15,793 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:42:15,793 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 68 transitions. [2024-09-20 19:42:15,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-09-20 19:42:15,795 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 19:42:15,795 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] [2024-09-20 19:42:15,811 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-09-20 19:42:15,996 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 [2024-09-20 19:42:15,996 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 19:42:15,996 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:42:15,996 INFO L85 PathProgramCache]: Analyzing trace with hash -455011438, now seen corresponding path program 1 times [2024-09-20 19:42:15,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 19:42:15,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446776853] [2024-09-20 19:42:15,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 19:42:15,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 19:42:16,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-20 19:42:16,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [306038330] [2024-09-20 19:42:16,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 19:42:16,028 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 19:42:16,028 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 19:42:16,030 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) [2024-09-20 19:42:16,041 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-09-20 19:42:16,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:42:16,082 INFO L262 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-09-20 19:42:16,085 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 19:42:16,440 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-09-20 19:42:16,443 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 19:42:21,258 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 7 proven. 9 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-09-20 19:42:21,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 19:42:21,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446776853] [2024-09-20 19:42:21,258 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-20 19:42:21,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [306038330] [2024-09-20 19:42:21,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [306038330] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 19:42:21,260 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-20 19:42:21,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 18 [2024-09-20 19:42:21,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337504166] [2024-09-20 19:42:21,260 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-20 19:42:21,260 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-09-20 19:42:21,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 19:42:21,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-09-20 19:42:21,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2024-09-20 19:42:21,264 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) [2024-09-20 19:42:22,879 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-20 19:42:30,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 19:42:30,418 INFO L93 Difference]: Finished difference Result 90 states and 105 transitions. [2024-09-20 19:42:30,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-09-20 19:42:30,419 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 [2024-09-20 19:42:30,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 19:42:30,420 INFO L225 Difference]: With dead ends: 90 [2024-09-20 19:42:30,420 INFO L226 Difference]: Without dead ends: 88 [2024-09-20 19:42:30,420 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 72 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 9.3s TimeCoverageRelationStatistics Valid=108, Invalid=398, Unknown=0, NotChecked=0, Total=506 [2024-09-20 19:42:30,423 INFO L434 NwaCegarLoop]: 23 mSDtfsCounter, 12 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s 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, 3.5s IncrementalHoareTripleChecker+Time [2024-09-20 19:42:30,423 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 151 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2024-09-20 19:42:30,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2024-09-20 19:42:30,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 71. [2024-09-20 19:42:30,451 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) [2024-09-20 19:42:30,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 82 transitions. [2024-09-20 19:42:30,453 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 82 transitions. Word has length 45 [2024-09-20 19:42:30,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 19:42:30,453 INFO L474 AbstractCegarLoop]: Abstraction has 71 states and 82 transitions. [2024-09-20 19:42:30,454 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) [2024-09-20 19:42:30,454 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:42:30,456 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 82 transitions. [2024-09-20 19:42:30,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-09-20 19:42:30,457 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 19:42:30,457 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] [2024-09-20 19:42:30,471 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-09-20 19:42:30,658 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 [2024-09-20 19:42:30,658 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 19:42:30,659 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:42:30,659 INFO L85 PathProgramCache]: Analyzing trace with hash -1692331952, now seen corresponding path program 2 times [2024-09-20 19:42:30,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 19:42:30,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078743225] [2024-09-20 19:42:30,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 19:42:30,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 19:42:30,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:42:31,399 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 19:42:31,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:42:31,402 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-20 19:42:31,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:42:31,406 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-20 19:42:31,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:42:31,436 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-20 19:42:31,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:42:31,440 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-20 19:42:31,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:42:31,450 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-20 19:42:31,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:42:31,457 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-09-20 19:42:31,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:42:31,466 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-20 19:42:31,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:42:31,469 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 47 proven. 5 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-09-20 19:42:31,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 19:42:31,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078743225] [2024-09-20 19:42:31,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078743225] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 19:42:31,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1300664349] [2024-09-20 19:42:31,469 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-20 19:42:31,470 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 19:42:31,470 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 19:42:31,471 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) [2024-09-20 19:42:31,472 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-09-20 19:42:31,524 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-20 19:42:31,525 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 19:42:31,528 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-09-20 19:42:31,530 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 19:42:31,740 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 47 proven. 5 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-09-20 19:42:31,741 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 19:42:32,163 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 36 proven. 16 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-09-20 19:42:32,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1300664349] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 19:42:32,163 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 19:42:32,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13, 12] total 24 [2024-09-20 19:42:32,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17785446] [2024-09-20 19:42:32,164 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 19:42:32,164 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-09-20 19:42:32,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 19:42:32,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-09-20 19:42:32,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=424, Unknown=0, NotChecked=0, Total=552 [2024-09-20 19:42:32,166 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) [2024-09-20 19:42:32,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 19:42:32,629 INFO L93 Difference]: Finished difference Result 141 states and 167 transitions. [2024-09-20 19:42:32,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-09-20 19:42:32,630 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 [2024-09-20 19:42:32,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 19:42:32,631 INFO L225 Difference]: With dead ends: 141 [2024-09-20 19:42:32,631 INFO L226 Difference]: Without dead ends: 67 [2024-09-20 19:42:32,632 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 126 SyntacticMatches, 5 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 368 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=444, Invalid=1278, Unknown=0, NotChecked=0, Total=1722 [2024-09-20 19:42:32,633 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 [2024-09-20 19:42:32,633 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] [2024-09-20 19:42:32,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2024-09-20 19:42:32,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2024-09-20 19:42:32,652 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) [2024-09-20 19:42:32,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 73 transitions. [2024-09-20 19:42:32,653 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 73 transitions. Word has length 63 [2024-09-20 19:42:32,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 19:42:32,653 INFO L474 AbstractCegarLoop]: Abstraction has 67 states and 73 transitions. [2024-09-20 19:42:32,653 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) [2024-09-20 19:42:32,654 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:42:32,654 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 73 transitions. [2024-09-20 19:42:32,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-09-20 19:42:32,655 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 19:42:32,655 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] [2024-09-20 19:42:32,674 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-09-20 19:42:32,855 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 [2024-09-20 19:42:32,856 INFO L399 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 19:42:32,856 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:42:32,856 INFO L85 PathProgramCache]: Analyzing trace with hash 358652046, now seen corresponding path program 3 times [2024-09-20 19:42:32,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 19:42:32,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962431143] [2024-09-20 19:42:32,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 19:42:32,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 19:42:32,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:42:33,424 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 19:42:33,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:42:33,426 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-20 19:42:33,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:42:33,429 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-20 19:42:33,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:42:33,454 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-20 19:42:33,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:42:33,457 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-20 19:42:33,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:42:33,464 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-20 19:42:33,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:42:33,467 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-09-20 19:42:33,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:42:33,470 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-20 19:42:33,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:42:33,475 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 26 proven. 26 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-09-20 19:42:33,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 19:42:33,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962431143] [2024-09-20 19:42:33,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962431143] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 19:42:33,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [142461616] [2024-09-20 19:42:33,476 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-20 19:42:33,476 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 19:42:33,476 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 19:42:33,477 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) [2024-09-20 19:42:33,479 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-09-20 19:42:33,530 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-09-20 19:42:33,530 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 19:42:33,532 INFO L262 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-09-20 19:42:33,534 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 19:42:34,794 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 19 proven. 36 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-09-20 19:42:34,795 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 19:42:36,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [142461616] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 19:42:36,659 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-20 19:42:36,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 15] total 25 [2024-09-20 19:42:36,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282725097] [2024-09-20 19:42:36,660 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-20 19:42:36,660 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-09-20 19:42:36,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 19:42:36,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-09-20 19:42:36,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=858, Unknown=0, NotChecked=0, Total=992 [2024-09-20 19:42:36,661 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) [2024-09-20 19:42:37,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 19:42:37,516 INFO L93 Difference]: Finished difference Result 77 states and 81 transitions. [2024-09-20 19:42:37,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-09-20 19:42:37,516 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 [2024-09-20 19:42:37,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 19:42:37,517 INFO L225 Difference]: With dead ends: 77 [2024-09-20 19:42:37,517 INFO L226 Difference]: Without dead ends: 50 [2024-09-20 19:42:37,517 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 74 SyntacticMatches, 5 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 462 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=282, Invalid=1788, Unknown=0, NotChecked=0, Total=2070 [2024-09-20 19:42:37,518 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 [2024-09-20 19:42:37,518 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] [2024-09-20 19:42:37,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2024-09-20 19:42:37,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2024-09-20 19:42:37,533 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) [2024-09-20 19:42:37,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 54 transitions. [2024-09-20 19:42:37,534 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 54 transitions. Word has length 63 [2024-09-20 19:42:37,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 19:42:37,535 INFO L474 AbstractCegarLoop]: Abstraction has 50 states and 54 transitions. [2024-09-20 19:42:37,535 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) [2024-09-20 19:42:37,535 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:42:37,535 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 54 transitions. [2024-09-20 19:42:37,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-09-20 19:42:37,540 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 19:42:37,540 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] [2024-09-20 19:42:37,552 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-09-20 19:42:37,741 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 [2024-09-20 19:42:37,741 INFO L399 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 19:42:37,741 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:42:37,742 INFO L85 PathProgramCache]: Analyzing trace with hash 499200656, now seen corresponding path program 2 times [2024-09-20 19:42:37,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 19:42:37,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50949996] [2024-09-20 19:42:37,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 19:42:37,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 19:42:37,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:42:38,164 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 19:42:38,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:42:38,166 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-20 19:42:38,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:42:38,169 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-20 19:42:38,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:42:38,192 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-20 19:42:38,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:42:38,205 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-20 19:42:38,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:42:38,208 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-20 19:42:38,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:42:38,213 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-09-20 19:42:38,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:42:38,217 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-20 19:42:38,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:42:38,222 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 32 proven. 20 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-09-20 19:42:38,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 19:42:38,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50949996] [2024-09-20 19:42:38,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50949996] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 19:42:38,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [494638359] [2024-09-20 19:42:38,223 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-20 19:42:38,223 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 19:42:38,223 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 19:42:38,225 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) [2024-09-20 19:42:38,227 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-09-20 19:42:38,311 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-20 19:42:38,311 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 19:42:38,315 INFO L262 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-09-20 19:42:38,317 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 19:42:38,491 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 49 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-09-20 19:42:38,491 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 19:42:39,050 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 49 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-09-20 19:42:39,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [494638359] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 19:42:39,051 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 19:42:39,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 30 [2024-09-20 19:42:39,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680696365] [2024-09-20 19:42:39,054 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 19:42:39,055 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-09-20 19:42:39,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 19:42:39,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-09-20 19:42:39,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=697, Unknown=0, NotChecked=0, Total=870 [2024-09-20 19:42:39,056 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) [2024-09-20 19:42:39,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 19:42:39,247 INFO L93 Difference]: Finished difference Result 52 states and 56 transitions. [2024-09-20 19:42:39,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-09-20 19:42:39,248 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 [2024-09-20 19:42:39,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 19:42:39,249 INFO L225 Difference]: With dead ends: 52 [2024-09-20 19:42:39,249 INFO L226 Difference]: Without dead ends: 0 [2024-09-20 19:42:39,249 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 125 SyntacticMatches, 3 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 364 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=307, Invalid=1025, Unknown=0, NotChecked=0, Total=1332 [2024-09-20 19:42:39,251 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 [2024-09-20 19:42:39,252 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] [2024-09-20 19:42:39,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-09-20 19:42:39,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-09-20 19:42:39,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-20 19:42:39,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-09-20 19:42:39,253 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 63 [2024-09-20 19:42:39,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 19:42:39,253 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-09-20 19:42:39,253 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) [2024-09-20 19:42:39,253 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:42:39,253 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-09-20 19:42:39,253 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-09-20 19:42:39,256 INFO L785 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-09-20 19:42:39,263 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-09-20 19:42:39,456 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 [2024-09-20 19:42:39,460 INFO L408 BasicCegarLoop]: Path program histogram: [3, 2, 1, 1, 1, 1, 1] [2024-09-20 19:42:39,461 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-09-20 19:42:43,667 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-09-20 19:42:43,692 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.09 07:42:43 BoogieIcfgContainer [2024-09-20 19:42:43,692 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-09-20 19:42:43,693 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-09-20 19:42:43,693 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-09-20 19:42:43,693 INFO L274 PluginConnector]: Witness Printer initialized [2024-09-20 19:42:43,693 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 07:42:10" (3/4) ... [2024-09-20 19:42:43,695 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-09-20 19:42:43,746 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.yml [2024-09-20 19:42:43,746 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-09-20 19:42:43,747 INFO L158 Benchmark]: Toolchain (without parser) took 34346.80ms. Allocated memory was 172.0MB in the beginning and 207.6MB in the end (delta: 35.7MB). Free memory was 102.6MB in the beginning and 97.4MB in the end (delta: 5.2MB). Peak memory consumption was 41.5MB. Max. memory is 16.1GB. [2024-09-20 19:42:43,747 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 119.5MB. Free memory was 82.3MB in the beginning and 82.2MB in the end (delta: 118.9kB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-20 19:42:43,747 INFO L158 Benchmark]: CACSL2BoogieTranslator took 234.51ms. Allocated memory is still 172.0MB. Free memory was 102.3MB in the beginning and 90.9MB in the end (delta: 11.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-09-20 19:42:43,748 INFO L158 Benchmark]: Boogie Procedure Inliner took 20.58ms. Allocated memory is still 172.0MB. Free memory was 90.9MB in the beginning and 89.8MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-20 19:42:43,748 INFO L158 Benchmark]: Boogie Preprocessor took 41.74ms. Allocated memory is still 172.0MB. Free memory was 89.8MB in the beginning and 88.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-20 19:42:43,748 INFO L158 Benchmark]: RCFGBuilder took 326.11ms. Allocated memory is still 172.0MB. Free memory was 88.1MB in the beginning and 137.8MB in the end (delta: -49.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-09-20 19:42:43,749 INFO L158 Benchmark]: TraceAbstraction took 33663.60ms. Allocated memory was 172.0MB in the beginning and 207.6MB in the end (delta: 35.7MB). Free memory was 137.1MB in the beginning and 100.6MB in the end (delta: 36.6MB). Peak memory consumption was 123.8MB. Max. memory is 16.1GB. [2024-09-20 19:42:43,749 INFO L158 Benchmark]: Witness Printer took 53.58ms. Allocated memory is still 207.6MB. Free memory was 100.6MB in the beginning and 97.4MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-20 19:42:43,751 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 119.5MB. Free memory was 82.3MB in the beginning and 82.2MB in the end (delta: 118.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 234.51ms. Allocated memory is still 172.0MB. Free memory was 102.3MB in the beginning and 90.9MB in the end (delta: 11.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 20.58ms. Allocated memory is still 172.0MB. Free memory was 90.9MB in the beginning and 89.8MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 41.74ms. Allocated memory is still 172.0MB. Free memory was 89.8MB in the beginning and 88.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 326.11ms. Allocated memory is still 172.0MB. Free memory was 88.1MB in the beginning and 137.8MB in the end (delta: -49.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 33663.60ms. Allocated memory was 172.0MB in the beginning and 207.6MB in the end (delta: 35.7MB). Free memory was 137.1MB in the beginning and 100.6MB in the end (delta: 36.6MB). Peak memory consumption was 123.8MB. Max. memory is 16.1GB. * Witness Printer took 53.58ms. Allocated memory is still 207.6MB. Free memory was 100.6MB in the beginning and 97.4MB in the end (delta: 3.1MB). 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: 29.4s, OverallIterations: 10, TraceHistogramMax: 5, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 11.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 137 SdHoareTripleChecker+Valid, 4.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 131 mSDsluCounter, 1625 SdHoareTripleChecker+Invalid, 4.5s 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, 14.6s 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: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 14.7s 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! [2024-09-20 19:42:43,792 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE