./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/divbin_valuebound1.i --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/divbin_valuebound1.i -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 ea97fe631de3abcfa1030cdb800e2845e2e97a42347e391a7c9fd401d3d0b815 --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 19:12:29,737 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-20 19:12:29,787 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-20 19:12:29,791 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-20 19:12:29,792 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-20 19:12:29,819 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-20 19:12:29,820 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-20 19:12:29,820 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-20 19:12:29,821 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-20 19:12:29,824 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-20 19:12:29,833 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-20 19:12:29,833 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-20 19:12:29,834 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-20 19:12:29,834 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-20 19:12:29,835 INFO L153 SettingsManager]: * Use SBE=true [2024-09-20 19:12:29,835 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-20 19:12:29,836 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-20 19:12:29,836 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-20 19:12:29,837 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-20 19:12:29,837 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-20 19:12:29,837 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-20 19:12:29,837 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-20 19:12:29,838 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-20 19:12:29,838 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-20 19:12:29,838 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-20 19:12:29,838 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-20 19:12:29,838 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-20 19:12:29,838 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-20 19:12:29,838 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-20 19:12:29,839 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-20 19:12:29,839 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-20 19:12:29,839 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-20 19:12:29,839 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-20 19:12:29,839 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-20 19:12:29,839 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-20 19:12:29,839 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-20 19:12:29,839 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-20 19:12:29,840 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-20 19:12:29,840 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-20 19:12:29,840 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-20 19:12:29,840 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-20 19:12:29,842 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-20 19:12:29,842 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ea97fe631de3abcfa1030cdb800e2845e2e97a42347e391a7c9fd401d3d0b815 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Generate GraphML witnesses -> false [2024-09-20 19:12:30,045 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-20 19:12:30,064 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-20 19:12:30,065 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-20 19:12:30,066 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-20 19:12:30,066 INFO L274 PluginConnector]: CDTParser initialized [2024-09-20 19:12:30,067 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/nla-digbench-scaling/divbin_valuebound1.i [2024-09-20 19:12:31,338 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-20 19:12:31,485 INFO L384 CDTParser]: Found 1 translation units. [2024-09-20 19:12:31,485 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/divbin_valuebound1.i [2024-09-20 19:12:31,492 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/ce4f9c99d/b4a2f06e44364d299234e650975e26af/FLAGd6bd82d83 [2024-09-20 19:12:31,502 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/ce4f9c99d/b4a2f06e44364d299234e650975e26af [2024-09-20 19:12:31,504 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-20 19:12:31,505 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-20 19:12:31,506 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-20 19:12:31,507 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-20 19:12:31,511 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-20 19:12:31,511 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 07:12:31" (1/1) ... [2024-09-20 19:12:31,512 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@755a9da1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:12:31, skipping insertion in model container [2024-09-20 19:12:31,512 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 07:12:31" (1/1) ... [2024-09-20 19:12:31,527 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-20 19:12:31,631 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/divbin_valuebound1.i[950,963] [2024-09-20 19:12:31,644 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-20 19:12:31,651 INFO L200 MainTranslator]: Completed pre-run [2024-09-20 19:12:31,662 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/divbin_valuebound1.i[950,963] [2024-09-20 19:12:31,672 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-20 19:12:31,686 INFO L204 MainTranslator]: Completed translation [2024-09-20 19:12:31,687 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:12:31 WrapperNode [2024-09-20 19:12:31,687 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-20 19:12:31,688 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-20 19:12:31,688 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-20 19:12:31,688 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-20 19:12:31,693 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:12:31" (1/1) ... [2024-09-20 19:12:31,699 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:12:31" (1/1) ... [2024-09-20 19:12:31,706 INFO L138 Inliner]: procedures = 16, calls = 12, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-20 19:12:31,707 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-20 19:12:31,707 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-20 19:12:31,707 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-20 19:12:31,708 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-20 19:12:31,715 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:12:31" (1/1) ... [2024-09-20 19:12:31,716 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:12:31" (1/1) ... [2024-09-20 19:12:31,717 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:12:31" (1/1) ... [2024-09-20 19:12:31,741 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 19:12:31,742 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:12:31" (1/1) ... [2024-09-20 19:12:31,742 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:12:31" (1/1) ... [2024-09-20 19:12:31,744 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:12:31" (1/1) ... [2024-09-20 19:12:31,746 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:12:31" (1/1) ... [2024-09-20 19:12:31,747 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:12:31" (1/1) ... [2024-09-20 19:12:31,748 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:12:31" (1/1) ... [2024-09-20 19:12:31,749 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-20 19:12:31,751 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-20 19:12:31,755 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-20 19:12:31,755 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-20 19:12:31,756 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:12:31" (1/1) ... [2024-09-20 19:12:31,761 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-20 19:12:31,770 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 19:12:31,787 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 19:12:31,791 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 19:12:31,829 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-20 19:12:31,830 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-09-20 19:12:31,830 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-09-20 19:12:31,830 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-20 19:12:31,830 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-20 19:12:31,830 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-20 19:12:31,830 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-20 19:12:31,830 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-20 19:12:31,831 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-20 19:12:31,831 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-20 19:12:31,831 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-20 19:12:31,831 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-20 19:12:31,877 INFO L242 CfgBuilder]: Building ICFG [2024-09-20 19:12:31,879 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-20 19:12:32,006 INFO L? ?]: Removed 5 outVars from TransFormulas that were not future-live. [2024-09-20 19:12:32,006 INFO L291 CfgBuilder]: Performing block encoding [2024-09-20 19:12:32,019 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-20 19:12:32,019 INFO L318 CfgBuilder]: Removed 2 assume(true) statements. [2024-09-20 19:12:32,019 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 07:12:32 BoogieIcfgContainer [2024-09-20 19:12:32,020 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-20 19:12:32,021 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-20 19:12:32,021 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-20 19:12:32,024 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-20 19:12:32,024 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 07:12:31" (1/3) ... [2024-09-20 19:12:32,024 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5119e4dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 07:12:32, skipping insertion in model container [2024-09-20 19:12:32,024 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:12:31" (2/3) ... [2024-09-20 19:12:32,025 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5119e4dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 07:12:32, skipping insertion in model container [2024-09-20 19:12:32,025 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 07:12:32" (3/3) ... [2024-09-20 19:12:32,026 INFO L112 eAbstractionObserver]: Analyzing ICFG divbin_valuebound1.i [2024-09-20 19:12:32,038 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-20 19:12:32,038 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-20 19:12:32,082 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-20 19:12:32,087 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;@36d0b4b9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-20 19:12:32,088 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-20 19:12:32,092 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 19 states have internal predecessors, (28), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-09-20 19:12:32,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-09-20 19:12:32,104 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 19:12:32,104 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 19:12:32,105 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 19:12:32,110 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:12:32,111 INFO L85 PathProgramCache]: Analyzing trace with hash -923394275, now seen corresponding path program 1 times [2024-09-20 19:12:32,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 19:12:32,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644592925] [2024-09-20 19:12:32,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 19:12:32,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 19:12:32,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:12:32,257 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 19:12:32,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:12:32,267 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-20 19:12:32,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:12:32,277 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-20 19:12:32,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:12:32,285 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-20 19:12:32,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:12:32,296 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-20 19:12:32,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:12:32,304 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-20 19:12:32,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 19:12:32,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644592925] [2024-09-20 19:12:32,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644592925] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-20 19:12:32,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-20 19:12:32,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-20 19:12:32,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451560966] [2024-09-20 19:12:32,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-20 19:12:32,311 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-09-20 19:12:32,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 19:12:32,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-09-20 19:12:32,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-20 19:12:32,331 INFO L87 Difference]: Start difference. First operand has 32 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 19 states have internal predecessors, (28), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-09-20 19:12:32,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 19:12:32,357 INFO L93 Difference]: Finished difference Result 58 states and 87 transitions. [2024-09-20 19:12:32,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-20 19:12:32,359 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 33 [2024-09-20 19:12:32,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 19:12:32,365 INFO L225 Difference]: With dead ends: 58 [2024-09-20 19:12:32,365 INFO L226 Difference]: Without dead ends: 28 [2024-09-20 19:12:32,367 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 16 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 19:12:32,371 INFO L434 NwaCegarLoop]: 36 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, 36 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 19:12:32,372 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 36 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-20 19:12:32,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2024-09-20 19:12:32,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2024-09-20 19:12:32,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 16 states have (on average 1.25) internal successors, (20), 17 states have internal predecessors, (20), 8 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-20 19:12:32,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 34 transitions. [2024-09-20 19:12:32,406 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 34 transitions. Word has length 33 [2024-09-20 19:12:32,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 19:12:32,408 INFO L474 AbstractCegarLoop]: Abstraction has 28 states and 34 transitions. [2024-09-20 19:12:32,408 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-09-20 19:12:32,408 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:12:32,409 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 34 transitions. [2024-09-20 19:12:32,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-09-20 19:12:32,411 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 19:12:32,411 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 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 19:12:32,412 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-20 19:12:32,412 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 19:12:32,412 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:12:32,412 INFO L85 PathProgramCache]: Analyzing trace with hash 1193042891, now seen corresponding path program 1 times [2024-09-20 19:12:32,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 19:12:32,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065472768] [2024-09-20 19:12:32,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 19:12:32,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 19:12:32,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-20 19:12:32,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [993511939] [2024-09-20 19:12:32,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 19:12:32,502 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 19:12:32,503 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 19:12:32,504 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 19:12:32,506 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 19:12:32,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:12:32,579 INFO L262 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-09-20 19:12:32,595 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 19:12:32,854 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-20 19:12:32,855 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 19:12:33,043 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-20 19:12:33,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 19:12:33,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065472768] [2024-09-20 19:12:33,044 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-20 19:12:33,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [993511939] [2024-09-20 19:12:33,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [993511939] provided 1 perfect and 1 imperfect interpolant sequences [2024-09-20 19:12:33,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-20 19:12:33,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 12 [2024-09-20 19:12:33,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118408582] [2024-09-20 19:12:33,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-20 19:12:33,046 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-20 19:12:33,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 19:12:33,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-20 19:12:33,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-09-20 19:12:33,047 INFO L87 Difference]: Start difference. First operand 28 states and 34 transitions. Second operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-09-20 19:12:33,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 19:12:33,452 INFO L93 Difference]: Finished difference Result 40 states and 48 transitions. [2024-09-20 19:12:33,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-20 19:12:33,453 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 34 [2024-09-20 19:12:33,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 19:12:33,454 INFO L225 Difference]: With dead ends: 40 [2024-09-20 19:12:33,454 INFO L226 Difference]: Without dead ends: 37 [2024-09-20 19:12:33,454 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 55 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-09-20 19:12:33,455 INFO L434 NwaCegarLoop]: 26 mSDtfsCounter, 6 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-20 19:12:33,456 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 99 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-20 19:12:33,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2024-09-20 19:12:33,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2024-09-20 19:12:33,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 24 states have internal predecessors, (28), 9 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-09-20 19:12:33,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 44 transitions. [2024-09-20 19:12:33,463 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 44 transitions. Word has length 34 [2024-09-20 19:12:33,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 19:12:33,464 INFO L474 AbstractCegarLoop]: Abstraction has 37 states and 44 transitions. [2024-09-20 19:12:33,464 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-09-20 19:12:33,464 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:12:33,464 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 44 transitions. [2024-09-20 19:12:33,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-09-20 19:12:33,465 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 19:12:33,465 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 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 19:12:33,478 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-09-20 19:12:33,665 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 19:12:33,666 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 19:12:33,667 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:12:33,667 INFO L85 PathProgramCache]: Analyzing trace with hash 336856806, now seen corresponding path program 1 times [2024-09-20 19:12:33,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 19:12:33,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890483886] [2024-09-20 19:12:33,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 19:12:33,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 19:12:33,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-20 19:12:33,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2053500456] [2024-09-20 19:12:33,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 19:12:33,711 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 19:12:33,711 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 19:12:33,715 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 19:12:33,720 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 19:12:33,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:12:33,773 INFO L262 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-09-20 19:12:33,776 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 19:12:33,913 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-09-20 19:12:33,913 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 19:12:34,192 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-09-20 19:12:34,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 19:12:34,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890483886] [2024-09-20 19:12:34,193 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-20 19:12:34,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2053500456] [2024-09-20 19:12:34,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2053500456] provided 1 perfect and 1 imperfect interpolant sequences [2024-09-20 19:12:34,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-20 19:12:34,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 11 [2024-09-20 19:12:34,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992359165] [2024-09-20 19:12:34,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-20 19:12:34,193 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-20 19:12:34,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 19:12:34,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-20 19:12:34,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-09-20 19:12:34,194 INFO L87 Difference]: Start difference. First operand 37 states and 44 transitions. Second operand has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-09-20 19:12:35,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 19:12:35,052 INFO L93 Difference]: Finished difference Result 47 states and 55 transitions. [2024-09-20 19:12:35,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-20 19:12:35,052 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 36 [2024-09-20 19:12:35,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 19:12:35,053 INFO L225 Difference]: With dead ends: 47 [2024-09-20 19:12:35,053 INFO L226 Difference]: Without dead ends: 44 [2024-09-20 19:12:35,054 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 60 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-09-20 19:12:35,054 INFO L434 NwaCegarLoop]: 26 mSDtfsCounter, 9 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-09-20 19:12:35,055 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 122 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-09-20 19:12:35,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2024-09-20 19:12:35,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 35. [2024-09-20 19:12:35,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 21 states have (on average 1.1904761904761905) internal successors, (25), 22 states have internal predecessors, (25), 9 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-09-20 19:12:35,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 41 transitions. [2024-09-20 19:12:35,069 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 41 transitions. Word has length 36 [2024-09-20 19:12:35,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 19:12:35,069 INFO L474 AbstractCegarLoop]: Abstraction has 35 states and 41 transitions. [2024-09-20 19:12:35,069 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-09-20 19:12:35,070 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:12:35,070 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 41 transitions. [2024-09-20 19:12:35,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-09-20 19:12:35,071 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 19:12:35,071 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 1, 1, 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 19:12:35,084 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-09-20 19:12:35,272 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 19:12:35,272 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 19:12:35,273 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:12:35,273 INFO L85 PathProgramCache]: Analyzing trace with hash 513117096, now seen corresponding path program 1 times [2024-09-20 19:12:35,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 19:12:35,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911426671] [2024-09-20 19:12:35,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 19:12:35,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 19:12:35,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:12:35,660 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 19:12:35,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:12:35,665 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-20 19:12:35,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:12:35,668 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-20 19:12:35,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:12:35,671 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-20 19:12:35,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:12:35,674 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-20 19:12:35,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:12:35,677 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-09-20 19:12:35,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:12:35,688 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-20 19:12:35,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 19:12:35,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911426671] [2024-09-20 19:12:35,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911426671] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-20 19:12:35,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-20 19:12:35,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-09-20 19:12:35,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010343639] [2024-09-20 19:12:35,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-20 19:12:35,691 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-09-20 19:12:35,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 19:12:35,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-09-20 19:12:35,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-09-20 19:12:35,692 INFO L87 Difference]: Start difference. First operand 35 states and 41 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-09-20 19:12:35,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 19:12:35,724 INFO L93 Difference]: Finished difference Result 51 states and 61 transitions. [2024-09-20 19:12:35,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-20 19:12:35,724 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 42 [2024-09-20 19:12:35,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 19:12:35,725 INFO L225 Difference]: With dead ends: 51 [2024-09-20 19:12:35,725 INFO L226 Difference]: Without dead ends: 37 [2024-09-20 19:12:35,726 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-09-20 19:12:35,727 INFO L434 NwaCegarLoop]: 31 mSDtfsCounter, 1 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-20 19:12:35,727 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 55 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-20 19:12:35,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2024-09-20 19:12:35,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2024-09-20 19:12:35,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 23 states have (on average 1.173913043478261) internal successors, (27), 24 states have internal predecessors, (27), 9 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-09-20 19:12:35,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 43 transitions. [2024-09-20 19:12:35,739 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 43 transitions. Word has length 42 [2024-09-20 19:12:35,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 19:12:35,739 INFO L474 AbstractCegarLoop]: Abstraction has 37 states and 43 transitions. [2024-09-20 19:12:35,740 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-09-20 19:12:35,740 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:12:35,740 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 43 transitions. [2024-09-20 19:12:35,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-09-20 19:12:35,741 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 19:12:35,741 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 1, 1, 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 19:12:35,741 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-09-20 19:12:35,741 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 19:12:35,741 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:12:35,741 INFO L85 PathProgramCache]: Analyzing trace with hash 980542403, now seen corresponding path program 1 times [2024-09-20 19:12:35,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 19:12:35,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316718013] [2024-09-20 19:12:35,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 19:12:35,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 19:12:35,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-20 19:12:35,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2003005188] [2024-09-20 19:12:35,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 19:12:35,774 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 19:12:35,774 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 19:12:35,778 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 19:12:35,780 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 19:12:35,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:12:35,856 INFO L262 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-09-20 19:12:35,858 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 19:12:36,011 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-09-20 19:12:36,011 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 19:13:05,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 19:13:05,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316718013] [2024-09-20 19:13:05,146 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-20 19:13:05,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2003005188] [2024-09-20 19:13:05,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2003005188] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 19:13:05,147 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-09-20 19:13:05,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2024-09-20 19:13:05,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493207628] [2024-09-20 19:13:05,147 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-09-20 19:13:05,147 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-09-20 19:13:05,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 19:13:05,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-09-20 19:13:05,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=194, Unknown=6, NotChecked=0, Total=240 [2024-09-20 19:13:05,150 INFO L87 Difference]: Start difference. First operand 37 states and 43 transitions. Second operand has 12 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 11 states have internal predecessors, (23), 4 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-09-20 19:13:05,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 19:13:05,292 INFO L93 Difference]: Finished difference Result 52 states and 62 transitions. [2024-09-20 19:13:05,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-09-20 19:13:05,293 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 11 states have internal predecessors, (23), 4 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 44 [2024-09-20 19:13:05,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 19:13:05,293 INFO L225 Difference]: With dead ends: 52 [2024-09-20 19:13:05,295 INFO L226 Difference]: Without dead ends: 48 [2024-09-20 19:13:05,295 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 35 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 25.8s TimeCoverageRelationStatistics Valid=46, Invalid=220, Unknown=6, NotChecked=0, Total=272 [2024-09-20 19:13:05,296 INFO L434 NwaCegarLoop]: 21 mSDtfsCounter, 22 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 19:13:05,296 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 128 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 19:13:05,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2024-09-20 19:13:05,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 47. [2024-09-20 19:13:05,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 30 states have (on average 1.1666666666666667) internal successors, (35), 32 states have internal predecessors, (35), 11 states have call successors, (11), 6 states have call predecessors, (11), 5 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2024-09-20 19:13:05,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 55 transitions. [2024-09-20 19:13:05,308 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 55 transitions. Word has length 44 [2024-09-20 19:13:05,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 19:13:05,309 INFO L474 AbstractCegarLoop]: Abstraction has 47 states and 55 transitions. [2024-09-20 19:13:05,309 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 11 states have internal predecessors, (23), 4 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-09-20 19:13:05,310 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:13:05,310 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 55 transitions. [2024-09-20 19:13:05,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-09-20 19:13:05,312 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 19:13:05,312 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 19:13:05,326 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-09-20 19:13:05,513 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 19:13:05,513 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 19:13:05,517 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:13:05,517 INFO L85 PathProgramCache]: Analyzing trace with hash -2109238368, now seen corresponding path program 2 times [2024-09-20 19:13:05,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 19:13:05,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782400202] [2024-09-20 19:13:05,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 19:13:05,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 19:13:05,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:13:05,823 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 19:13:05,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:13:05,825 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-20 19:13:05,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:13:05,827 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-20 19:13:05,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:13:05,828 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-20 19:13:05,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:13:05,829 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-20 19:13:05,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:13:05,831 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-20 19:13:05,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:13:05,836 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-20 19:13:05,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:13:05,848 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-09-20 19:13:05,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 19:13:05,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782400202] [2024-09-20 19:13:05,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782400202] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 19:13:05,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1383713323] [2024-09-20 19:13:05,849 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-20 19:13:05,849 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 19:13:05,850 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 19:13:05,851 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 19:13:05,852 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 19:13:05,926 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-20 19:13:05,926 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 19:13:05,927 INFO L262 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-09-20 19:13:05,928 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 19:13:06,160 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 12 proven. 9 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-09-20 19:13:06,160 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 19:13:06,891 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 15 proven. 6 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-09-20 19:13:06,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1383713323] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 19:13:06,891 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 19:13:06,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 11, 11] total 23 [2024-09-20 19:13:06,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97204598] [2024-09-20 19:13:06,892 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 19:13:06,892 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-09-20 19:13:06,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 19:13:06,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-09-20 19:13:06,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=428, Unknown=0, NotChecked=0, Total=506 [2024-09-20 19:13:06,893 INFO L87 Difference]: Start difference. First operand 47 states and 55 transitions. Second operand has 23 states, 21 states have (on average 2.238095238095238) internal successors, (47), 19 states have internal predecessors, (47), 11 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (18), 12 states have call predecessors, (18), 10 states have call successors, (18) [2024-09-20 19:13:11,171 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-09-20 19:13:11,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 19:13:11,243 INFO L93 Difference]: Finished difference Result 69 states and 80 transitions. [2024-09-20 19:13:11,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-09-20 19:13:11,243 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 21 states have (on average 2.238095238095238) internal successors, (47), 19 states have internal predecessors, (47), 11 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (18), 12 states have call predecessors, (18), 10 states have call successors, (18) Word has length 52 [2024-09-20 19:13:11,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 19:13:11,244 INFO L225 Difference]: With dead ends: 69 [2024-09-20 19:13:11,244 INFO L226 Difference]: Without dead ends: 0 [2024-09-20 19:13:11,244 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=147, Invalid=609, Unknown=0, NotChecked=0, Total=756 [2024-09-20 19:13:11,245 INFO L434 NwaCegarLoop]: 22 mSDtfsCounter, 37 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 17 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 213 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2024-09-20 19:13:11,245 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 213 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 169 Invalid, 1 Unknown, 0 Unchecked, 4.2s Time] [2024-09-20 19:13:11,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-09-20 19:13:11,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-09-20 19:13:11,245 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 19:13:11,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-09-20 19:13:11,245 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 52 [2024-09-20 19:13:11,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 19:13:11,246 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-09-20 19:13:11,246 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 21 states have (on average 2.238095238095238) internal successors, (47), 19 states have internal predecessors, (47), 11 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (18), 12 states have call predecessors, (18), 10 states have call successors, (18) [2024-09-20 19:13:11,246 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:13:11,246 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-09-20 19:13:11,246 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-09-20 19:13:11,248 INFO L785 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-09-20 19:13:11,255 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 19:13:11,452 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 19:13:11,455 INFO L408 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1] [2024-09-20 19:13:11,457 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-09-20 19:13:17,965 WARN L293 SmtUtils]: Spent 5.56s on a formula simplification. DAG size of input: 65 DAG size of output: 64 (called from [L 162] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.combineInter) [2024-09-20 19:13:19,497 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-09-20 19:13:19,513 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression [2024-09-20 19:13:19,521 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.09 07:13:19 BoogieIcfgContainer [2024-09-20 19:13:19,521 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-09-20 19:13:19,522 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-09-20 19:13:19,522 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-09-20 19:13:19,522 INFO L274 PluginConnector]: Witness Printer initialized [2024-09-20 19:13:19,522 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 07:12:32" (3/4) ... [2024-09-20 19:13:19,524 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-09-20 19:13:19,569 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.yml [2024-09-20 19:13:19,572 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-09-20 19:13:19,572 INFO L158 Benchmark]: Toolchain (without parser) took 48066.85ms. Allocated memory was 151.0MB in the beginning and 243.3MB in the end (delta: 92.3MB). Free memory was 80.4MB in the beginning and 140.2MB in the end (delta: -59.8MB). Peak memory consumption was 34.3MB. Max. memory is 16.1GB. [2024-09-20 19:13:19,572 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 151.0MB. Free memory is still 117.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-20 19:13:19,572 INFO L158 Benchmark]: CACSL2BoogieTranslator took 180.69ms. Allocated memory is still 151.0MB. Free memory was 80.2MB in the beginning and 68.7MB in the end (delta: 11.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-09-20 19:13:19,573 INFO L158 Benchmark]: Boogie Procedure Inliner took 19.19ms. Allocated memory is still 151.0MB. Free memory was 68.5MB in the beginning and 67.6MB in the end (delta: 868.3kB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-20 19:13:19,573 INFO L158 Benchmark]: Boogie Preprocessor took 43.37ms. Allocated memory was 151.0MB in the beginning and 201.3MB in the end (delta: 50.3MB). Free memory was 67.6MB in the beginning and 171.3MB in the end (delta: -103.7MB). Peak memory consumption was 7.8MB. Max. memory is 16.1GB. [2024-09-20 19:13:19,573 INFO L158 Benchmark]: RCFGBuilder took 268.49ms. Allocated memory is still 201.3MB. Free memory was 171.3MB in the beginning and 160.3MB in the end (delta: 11.0MB). Peak memory consumption was 14.9MB. Max. memory is 16.1GB. [2024-09-20 19:13:19,573 INFO L158 Benchmark]: TraceAbstraction took 47500.04ms. Allocated memory was 201.3MB in the beginning and 243.3MB in the end (delta: 41.9MB). Free memory was 159.3MB in the beginning and 142.3MB in the end (delta: 16.9MB). Peak memory consumption was 59.8MB. Max. memory is 16.1GB. [2024-09-20 19:13:19,573 INFO L158 Benchmark]: Witness Printer took 50.03ms. Allocated memory is still 243.3MB. Free memory was 142.3MB in the beginning and 140.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-20 19:13:19,575 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 151.0MB. Free memory is still 117.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 180.69ms. Allocated memory is still 151.0MB. Free memory was 80.2MB in the beginning and 68.7MB in the end (delta: 11.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 19.19ms. Allocated memory is still 151.0MB. Free memory was 68.5MB in the beginning and 67.6MB in the end (delta: 868.3kB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 43.37ms. Allocated memory was 151.0MB in the beginning and 201.3MB in the end (delta: 50.3MB). Free memory was 67.6MB in the beginning and 171.3MB in the end (delta: -103.7MB). Peak memory consumption was 7.8MB. Max. memory is 16.1GB. * RCFGBuilder took 268.49ms. Allocated memory is still 201.3MB. Free memory was 171.3MB in the beginning and 160.3MB in the end (delta: 11.0MB). Peak memory consumption was 14.9MB. Max. memory is 16.1GB. * TraceAbstraction took 47500.04ms. Allocated memory was 201.3MB in the beginning and 243.3MB in the end (delta: 41.9MB). Free memory was 159.3MB in the beginning and 142.3MB in the end (delta: 16.9MB). Peak memory consumption was 59.8MB. Max. memory is 16.1GB. * Witness Printer took 50.03ms. Allocated memory is still 243.3MB. Free memory was 142.3MB in the beginning and 140.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression * 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: 21]: 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, 32 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 39.4s, OverallIterations: 6, TraceHistogramMax: 4, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 5.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1 mSolverCounterUnknown, 78 SdHoareTripleChecker+Valid, 5.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 75 mSDsluCounter, 653 SdHoareTripleChecker+Invalid, 5.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 491 mSDsCounter, 33 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 415 IncrementalHoareTripleChecker+Invalid, 449 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 33 mSolverCounterUnsat, 162 mSDtfsCounter, 415 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 358 GetRequests, 287 SyntacticMatches, 6 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 26.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=47occurred in iteration=5, InterpolantAutomatonStates: 39, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 10 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 31.9s InterpolantComputationTime, 407 NumberOfCodeBlocks, 407 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 405 ConstructedInterpolants, 4 QuantifiedInterpolants, 2190 SizeOfPredicates, 9 NumberOfNonLiveVariables, 392 ConjunctsInSsa, 79 ConjunctsInUnsatCore, 10 InterpolantComputations, 4 PerfectInterpolantSequences, 255/308 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: 37]: Loop Invariant Derived loop invariant: (((((((B == 1) && (r == A)) && (0 <= (2 * (((b / 2) + ((long long) -1 * B)) / 4294967296)))) && (A <= 1)) && (b <= ((long long) B * 2))) && (q == 0)) || ((((((b == 1) && (r == A)) && (0 <= 0)) && (A <= 1)) && (B == b)) && (q == 0))) - InvariantResult [Line: 41]: Loop Invariant Derived loop invariant: ((((((((B == 1) && (b == 1)) && (r <= 0)) && (r == A)) && (q == 0)) || ((((0 <= 0) && (0 <= 0)) && (A == ((r + ((unsigned long long) b * q)) % 4294967296))) && (B == b))) || ((((((B == 1) && (r == A)) && (0 <= (2 * (((b / 2) + ((long long) -1 * B)) / 4294967296)))) && (A <= 1)) && (b <= ((long long) B * 2))) && (q == 0))) || (((((B == 1) && (b == 1)) && (r <= 0)) && (A == (((long long) r + 1) % 4294967296))) && (q == 1))) - ProcedureContractResult [Line: 15]: Procedure Contract for assume_abort_if_not Derived contract for procedure assume_abort_if_not. Ensures: (\old(cond) != 0) - ProcedureContractResult [Line: 18]: 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 19:13:19,628 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