./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/ps4-ll_valuebound50.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 e378df2c Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/certificate-witnesses-artifact/automizer/data/config -Xmx15G -Xms4m -jar /storage/repos/certificate-witnesses-artifact/automizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/certificate-witnesses-artifact/automizer/data -tc /storage/repos/certificate-witnesses-artifact/automizer/config/AutomizerReach.xml -i ../sv-benchmarks/c/nla-digbench-scaling/ps4-ll_valuebound50.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 dcebefc76bde79b9a5fa67feebc75881761b0a4209b78516b385f787f62f9340 --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 0.2.5-wip.dk.contract-modifies-e378df2-m [2024-10-15 15:06:01,552 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-15 15:06:01,616 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-15 15:06:01,620 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-15 15:06:01,621 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-15 15:06:01,642 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-15 15:06:01,643 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-15 15:06:01,643 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-15 15:06:01,644 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-15 15:06:01,645 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-15 15:06:01,645 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-15 15:06:01,646 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-15 15:06:01,646 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-15 15:06:01,648 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-15 15:06:01,649 INFO L153 SettingsManager]: * Use SBE=true [2024-10-15 15:06:01,649 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-15 15:06:01,649 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-15 15:06:01,650 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-15 15:06:01,650 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-15 15:06:01,650 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-15 15:06:01,650 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-15 15:06:01,654 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-15 15:06:01,654 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-15 15:06:01,654 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-15 15:06:01,655 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-15 15:06:01,655 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-15 15:06:01,655 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-15 15:06:01,655 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-15 15:06:01,655 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-15 15:06:01,656 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-15 15:06:01,656 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-15 15:06:01,656 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-15 15:06:01,656 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-15 15:06:01,656 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-15 15:06:01,657 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-15 15:06:01,657 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-15 15:06:01,658 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-15 15:06:01,659 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-15 15:06:01,659 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-15 15:06:01,659 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-15 15:06:01,659 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-15 15:06:01,660 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-15 15:06:01,660 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dcebefc76bde79b9a5fa67feebc75881761b0a4209b78516b385f787f62f9340 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Generate GraphML witnesses -> false [2024-10-15 15:06:01,905 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-15 15:06:01,930 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-15 15:06:01,933 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-15 15:06:01,934 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-15 15:06:01,935 INFO L274 PluginConnector]: CDTParser initialized [2024-10-15 15:06:01,936 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/nla-digbench-scaling/ps4-ll_valuebound50.c [2024-10-15 15:06:03,302 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-15 15:06:03,486 INFO L384 CDTParser]: Found 1 translation units. [2024-10-15 15:06:03,487 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/ps4-ll_valuebound50.c [2024-10-15 15:06:03,496 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/1fe7e1433/92b21b7086d7455788008c74f8c5b470/FLAGf5638801f [2024-10-15 15:06:03,509 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/1fe7e1433/92b21b7086d7455788008c74f8c5b470 [2024-10-15 15:06:03,511 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-15 15:06:03,513 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-15 15:06:03,516 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-15 15:06:03,516 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-15 15:06:03,522 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-15 15:06:03,523 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:06:03" (1/1) ... [2024-10-15 15:06:03,524 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e1edc86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:06:03, skipping insertion in model container [2024-10-15 15:06:03,524 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:06:03" (1/1) ... [2024-10-15 15:06:03,540 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-15 15:06:03,726 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/ps4-ll_valuebound50.c[458,471] [2024-10-15 15:06:03,746 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-15 15:06:03,754 INFO L200 MainTranslator]: Completed pre-run [2024-10-15 15:06:03,766 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/ps4-ll_valuebound50.c[458,471] [2024-10-15 15:06:03,771 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-15 15:06:03,784 INFO L204 MainTranslator]: Completed translation [2024-10-15 15:06:03,785 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:06:03 WrapperNode [2024-10-15 15:06:03,785 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-15 15:06:03,786 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-15 15:06:03,787 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-15 15:06:03,787 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-15 15:06:03,794 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:06:03" (1/1) ... [2024-10-15 15:06:03,799 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:06:03" (1/1) ... [2024-10-15 15:06:03,808 INFO L138 Inliner]: procedures = 14, calls = 11, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-10-15 15:06:03,808 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-15 15:06:03,809 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-15 15:06:03,809 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-15 15:06:03,809 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-15 15:06:03,817 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:06:03" (1/1) ... [2024-10-15 15:06:03,817 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:06:03" (1/1) ... [2024-10-15 15:06:03,818 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:06:03" (1/1) ... [2024-10-15 15:06:03,829 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]. [2024-10-15 15:06:03,829 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:06:03" (1/1) ... [2024-10-15 15:06:03,829 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:06:03" (1/1) ... [2024-10-15 15:06:03,832 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:06:03" (1/1) ... [2024-10-15 15:06:03,835 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:06:03" (1/1) ... [2024-10-15 15:06:03,836 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:06:03" (1/1) ... [2024-10-15 15:06:03,837 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:06:03" (1/1) ... [2024-10-15 15:06:03,838 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-15 15:06:03,839 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-15 15:06:03,839 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-15 15:06:03,839 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-15 15:06:03,841 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:06:03" (1/1) ... [2024-10-15 15:06:03,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-15 15:06:03,855 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 15:06:03,874 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) [2024-10-15 15:06:03,878 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 [2024-10-15 15:06:03,928 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-15 15:06:03,929 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-10-15 15:06:03,929 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-10-15 15:06:03,929 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-10-15 15:06:03,929 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-10-15 15:06:03,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-15 15:06:03,930 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-10-15 15:06:03,950 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-10-15 15:06:03,950 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-15 15:06:03,951 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-15 15:06:03,951 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-10-15 15:06:03,951 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-10-15 15:06:04,044 INFO L238 CfgBuilder]: Building ICFG [2024-10-15 15:06:04,046 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-15 15:06:04,218 INFO L? ?]: Removed 5 outVars from TransFormulas that were not future-live. [2024-10-15 15:06:04,218 INFO L287 CfgBuilder]: Performing block encoding [2024-10-15 15:06:04,249 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-15 15:06:04,249 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-15 15:06:04,249 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:06:04 BoogieIcfgContainer [2024-10-15 15:06:04,249 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-15 15:06:04,253 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-15 15:06:04,254 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-15 15:06:04,257 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-15 15:06:04,257 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:06:03" (1/3) ... [2024-10-15 15:06:04,258 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1da971be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:06:04, skipping insertion in model container [2024-10-15 15:06:04,258 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:06:03" (2/3) ... [2024-10-15 15:06:04,258 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1da971be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:06:04, skipping insertion in model container [2024-10-15 15:06:04,259 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:06:04" (3/3) ... [2024-10-15 15:06:04,260 INFO L112 eAbstractionObserver]: Analyzing ICFG ps4-ll_valuebound50.c [2024-10-15 15:06:04,277 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-15 15:06:04,278 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-15 15:06:04,332 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-15 15:06:04,338 INFO L333 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;@7252aaa4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-15 15:06:04,338 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-15 15:06:04,341 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 15 states have internal predecessors, (20), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-10-15 15:06:04,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-10-15 15:06:04,347 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 15:06:04,347 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 15:06:04,348 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 15:06:04,352 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:06:04,352 INFO L85 PathProgramCache]: Analyzing trace with hash 1238311395, now seen corresponding path program 1 times [2024-10-15 15:06:04,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 15:06:04,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793148068] [2024-10-15 15:06:04,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 15:06:04,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 15:06:04,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:06:04,499 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 15:06:04,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:06:04,519 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-15 15:06:04,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:06:04,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 15:06:04,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 15:06:04,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793148068] [2024-10-15 15:06:04,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793148068] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 15:06:04,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-15 15:06:04,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-15 15:06:04,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365897873] [2024-10-15 15:06:04,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 15:06:04,548 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-15 15:06:04,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 15:06:04,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-15 15:06:04,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-15 15:06:04,570 INFO L87 Difference]: Start difference. First operand has 26 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 15 states have internal predecessors, (20), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-15 15:06:04,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 15:06:04,596 INFO L93 Difference]: Finished difference Result 44 states and 58 transitions. [2024-10-15 15:06:04,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-15 15:06:04,599 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 16 [2024-10-15 15:06:04,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 15:06:04,604 INFO L225 Difference]: With dead ends: 44 [2024-10-15 15:06:04,604 INFO L226 Difference]: Without dead ends: 22 [2024-10-15 15:06:04,607 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-15 15:06:04,610 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-15 15:06:04,610 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 26 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-15 15:06:04,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2024-10-15 15:06:04,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2024-10-15 15:06:04,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 13 states have internal predecessors, (14), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-10-15 15:06:04,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2024-10-15 15:06:04,636 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 16 [2024-10-15 15:06:04,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 15:06:04,636 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2024-10-15 15:06:04,637 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-15 15:06:04,637 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:06:04,637 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2024-10-15 15:06:04,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-10-15 15:06:04,638 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 15:06:04,638 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 15:06:04,638 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-15 15:06:04,639 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 15:06:04,639 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:06:04,639 INFO L85 PathProgramCache]: Analyzing trace with hash 1910922015, now seen corresponding path program 1 times [2024-10-15 15:06:04,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 15:06:04,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792313049] [2024-10-15 15:06:04,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 15:06:04,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 15:06:04,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-15 15:06:04,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [935052127] [2024-10-15 15:06:04,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 15:06:04,670 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 15:06:04,670 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 15:06:04,673 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) [2024-10-15 15:06:04,674 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-15 15:06:04,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:06:04,729 INFO L255 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-15 15:06:04,734 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 15:06:04,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 15:06:04,829 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-15 15:06:04,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 15:06:04,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792313049] [2024-10-15 15:06:04,831 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-15 15:06:04,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [935052127] [2024-10-15 15:06:04,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [935052127] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 15:06:04,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-15 15:06:04,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-15 15:06:04,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739848995] [2024-10-15 15:06:04,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 15:06:04,834 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-15 15:06:04,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 15:06:04,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-15 15:06:04,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-15 15:06:04,837 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-15 15:06:04,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 15:06:04,907 INFO L93 Difference]: Finished difference Result 33 states and 37 transitions. [2024-10-15 15:06:04,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-15 15:06:04,908 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 16 [2024-10-15 15:06:04,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 15:06:04,910 INFO L225 Difference]: With dead ends: 33 [2024-10-15 15:06:04,910 INFO L226 Difference]: Without dead ends: 29 [2024-10-15 15:06:04,911 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-15 15:06:04,912 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 4 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-15 15:06:04,913 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 69 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-15 15:06:04,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-10-15 15:06:04,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2024-10-15 15:06:04,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 18 states have internal predecessors, (19), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-10-15 15:06:04,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2024-10-15 15:06:04,929 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 16 [2024-10-15 15:06:04,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 15:06:04,929 INFO L471 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2024-10-15 15:06:04,929 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-15 15:06:04,930 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:06:04,930 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2024-10-15 15:06:04,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-10-15 15:06:04,931 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 15:06:04,932 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 15:06:04,951 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-15 15:06:05,136 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 15:06:05,137 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 15:06:05,138 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:06:05,138 INFO L85 PathProgramCache]: Analyzing trace with hash 306700420, now seen corresponding path program 1 times [2024-10-15 15:06:05,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 15:06:05,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9301878] [2024-10-15 15:06:05,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 15:06:05,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 15:06:05,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-15 15:06:05,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [294244369] [2024-10-15 15:06:05,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 15:06:05,176 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 15:06:05,176 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 15:06:05,179 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) [2024-10-15 15:06:05,182 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-15 15:06:05,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:06:05,223 INFO L255 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-15 15:06:05,226 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 15:06:05,291 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 15:06:05,291 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 15:06:05,374 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-15 15:06:05,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 15:06:05,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9301878] [2024-10-15 15:06:05,375 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-15 15:06:05,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [294244369] [2024-10-15 15:06:05,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [294244369] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-15 15:06:05,376 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-15 15:06:05,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 7 [2024-10-15 15:06:05,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138375121] [2024-10-15 15:06:05,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 15:06:05,376 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-15 15:06:05,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 15:06:05,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-15 15:06:05,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-15 15:06:05,378 INFO L87 Difference]: Start difference. First operand 29 states and 31 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-15 15:06:05,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 15:06:05,419 INFO L93 Difference]: Finished difference Result 35 states and 36 transitions. [2024-10-15 15:06:05,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-15 15:06:05,419 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 23 [2024-10-15 15:06:05,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 15:06:05,420 INFO L225 Difference]: With dead ends: 35 [2024-10-15 15:06:05,421 INFO L226 Difference]: Without dead ends: 30 [2024-10-15 15:06:05,421 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 38 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-15 15:06:05,422 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 4 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-15 15:06:05,423 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 68 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-15 15:06:05,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-10-15 15:06:05,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2024-10-15 15:06:05,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 19 states have (on average 1.0526315789473684) internal successors, (20), 19 states have internal predecessors, (20), 6 states have call successors, (6), 6 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-10-15 15:06:05,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 30 transitions. [2024-10-15 15:06:05,432 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 30 transitions. Word has length 23 [2024-10-15 15:06:05,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 15:06:05,433 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 30 transitions. [2024-10-15 15:06:05,433 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-15 15:06:05,433 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:06:05,433 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 30 transitions. [2024-10-15 15:06:05,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-10-15 15:06:05,434 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 15:06:05,434 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 15:06:05,450 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-15 15:06:05,638 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 15:06:05,639 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 15:06:05,639 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:06:05,639 INFO L85 PathProgramCache]: Analyzing trace with hash 749725687, now seen corresponding path program 1 times [2024-10-15 15:06:05,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 15:06:05,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205167387] [2024-10-15 15:06:05,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 15:06:05,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 15:06:05,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-15 15:06:05,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1011764951] [2024-10-15 15:06:05,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 15:06:05,671 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 15:06:05,671 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 15:06:05,673 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) [2024-10-15 15:06:05,674 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-15 15:06:05,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:06:05,724 INFO L255 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-15 15:06:05,727 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 15:06:05,853 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-15 15:06:05,854 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 15:06:06,001 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-15 15:06:06,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 15:06:06,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205167387] [2024-10-15 15:06:06,002 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-15 15:06:06,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1011764951] [2024-10-15 15:06:06,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1011764951] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 15:06:06,003 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-15 15:06:06,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2024-10-15 15:06:06,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452925122] [2024-10-15 15:06:06,004 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-15 15:06:06,004 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-15 15:06:06,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 15:06:06,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-15 15:06:06,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-10-15 15:06:06,006 INFO L87 Difference]: Start difference. First operand 30 states and 30 transitions. Second operand has 10 states, 8 states have (on average 2.625) internal successors, (21), 9 states have internal predecessors, (21), 7 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-10-15 15:06:06,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 15:06:06,112 INFO L93 Difference]: Finished difference Result 45 states and 50 transitions. [2024-10-15 15:06:06,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-15 15:06:06,113 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 2.625) internal successors, (21), 9 states have internal predecessors, (21), 7 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) Word has length 29 [2024-10-15 15:06:06,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 15:06:06,114 INFO L225 Difference]: With dead ends: 45 [2024-10-15 15:06:06,114 INFO L226 Difference]: Without dead ends: 39 [2024-10-15 15:06:06,114 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 47 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2024-10-15 15:06:06,115 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 1 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-15 15:06:06,116 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 98 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-15 15:06:06,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2024-10-15 15:06:06,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2024-10-15 15:06:06,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 25 states have (on average 1.04) internal successors, (26), 25 states have internal predecessors, (26), 9 states have call successors, (9), 6 states have call predecessors, (9), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-10-15 15:06:06,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2024-10-15 15:06:06,134 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 29 [2024-10-15 15:06:06,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 15:06:06,134 INFO L471 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions. [2024-10-15 15:06:06,135 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 2.625) internal successors, (21), 9 states have internal predecessors, (21), 7 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-10-15 15:06:06,135 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:06:06,135 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2024-10-15 15:06:06,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-10-15 15:06:06,136 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 15:06:06,136 INFO L215 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 15:06:06,152 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-15 15:06:06,340 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 15:06:06,341 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 15:06:06,341 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:06:06,341 INFO L85 PathProgramCache]: Analyzing trace with hash 608187154, now seen corresponding path program 2 times [2024-10-15 15:06:06,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 15:06:06,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736651909] [2024-10-15 15:06:06,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 15:06:06,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 15:06:06,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-15 15:06:06,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1769699372] [2024-10-15 15:06:06,390 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-15 15:06:06,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 15:06:06,390 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 15:06:06,392 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) [2024-10-15 15:06:06,393 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-15 15:06:06,456 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-15 15:06:06,456 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 15:06:06,457 INFO L255 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-10-15 15:06:06,460 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 15:06:06,660 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 9 proven. 43 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-10-15 15:06:06,661 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 15:06:06,984 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 9 proven. 43 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-10-15 15:06:06,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 15:06:06,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736651909] [2024-10-15 15:06:06,984 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-15 15:06:06,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1769699372] [2024-10-15 15:06:06,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1769699372] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 15:06:06,985 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-15 15:06:06,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 22 [2024-10-15 15:06:06,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851956261] [2024-10-15 15:06:06,986 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-15 15:06:06,986 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-10-15 15:06:06,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 15:06:06,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-10-15 15:06:06,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=381, Unknown=0, NotChecked=0, Total=462 [2024-10-15 15:06:06,988 INFO L87 Difference]: Start difference. First operand 39 states and 42 transitions. Second operand has 22 states, 20 states have (on average 2.0) internal successors, (40), 19 states have internal predecessors, (40), 13 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (12), 11 states have call predecessors, (12), 11 states have call successors, (12) [2024-10-15 15:06:07,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 15:06:07,365 INFO L93 Difference]: Finished difference Result 43 states and 48 transitions. [2024-10-15 15:06:07,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-15 15:06:07,366 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 20 states have (on average 2.0) internal successors, (40), 19 states have internal predecessors, (40), 13 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (12), 11 states have call predecessors, (12), 11 states have call successors, (12) Word has length 50 [2024-10-15 15:06:07,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 15:06:07,367 INFO L225 Difference]: With dead ends: 43 [2024-10-15 15:06:07,368 INFO L226 Difference]: Without dead ends: 0 [2024-10-15 15:06:07,369 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=139, Invalid=617, Unknown=0, NotChecked=0, Total=756 [2024-10-15 15:06:07,369 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 5 mSDsluCounter, 240 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 262 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-15 15:06:07,370 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 262 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-15 15:06:07,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-10-15 15:06:07,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-10-15 15:06:07,371 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) [2024-10-15 15:06:07,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-10-15 15:06:07,371 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 50 [2024-10-15 15:06:07,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 15:06:07,372 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-10-15 15:06:07,372 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 20 states have (on average 2.0) internal successors, (40), 19 states have internal predecessors, (40), 13 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (12), 11 states have call predecessors, (12), 11 states have call successors, (12) [2024-10-15 15:06:07,372 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:06:07,373 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-10-15 15:06:07,373 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-10-15 15:06:07,375 INFO L782 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-10-15 15:06:07,392 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-15 15:06:07,579 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 15:06:07,583 INFO L407 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1] [2024-10-15 15:06:07,584 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-10-15 15:06:07,910 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-10-15 15:06:07,931 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 03:06:07 BoogieIcfgContainer [2024-10-15 15:06:07,931 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-15 15:06:07,932 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-15 15:06:07,932 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-15 15:06:07,932 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-15 15:06:07,932 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:06:04" (3/4) ... [2024-10-15 15:06:07,934 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-10-15 15:06:07,987 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.yml [2024-10-15 15:06:07,987 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-15 15:06:07,988 INFO L158 Benchmark]: Toolchain (without parser) took 4475.21ms. Allocated memory was 167.8MB in the beginning and 249.6MB in the end (delta: 81.8MB). Free memory was 99.6MB in the beginning and 177.7MB in the end (delta: -78.1MB). Peak memory consumption was 6.7MB. Max. memory is 16.1GB. [2024-10-15 15:06:07,988 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 167.8MB. Free memory is still 123.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-15 15:06:07,988 INFO L158 Benchmark]: CACSL2BoogieTranslator took 269.38ms. Allocated memory is still 167.8MB. Free memory was 99.4MB in the beginning and 87.0MB in the end (delta: 12.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-10-15 15:06:07,991 INFO L158 Benchmark]: Boogie Procedure Inliner took 21.96ms. Allocated memory is still 167.8MB. Free memory was 87.0MB in the beginning and 86.1MB in the end (delta: 965.4kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-15 15:06:07,991 INFO L158 Benchmark]: Boogie Preprocessor took 29.63ms. Allocated memory is still 167.8MB. Free memory was 86.1MB in the beginning and 84.4MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-15 15:06:07,992 INFO L158 Benchmark]: RCFGBuilder took 410.29ms. Allocated memory is still 167.8MB. Free memory was 84.4MB in the beginning and 130.8MB in the end (delta: -46.5MB). Peak memory consumption was 7.3MB. Max. memory is 16.1GB. [2024-10-15 15:06:07,992 INFO L158 Benchmark]: TraceAbstraction took 3678.67ms. Allocated memory was 167.8MB in the beginning and 249.6MB in the end (delta: 81.8MB). Free memory was 130.2MB in the beginning and 179.9MB in the end (delta: -49.7MB). Peak memory consumption was 35.1MB. Max. memory is 16.1GB. [2024-10-15 15:06:07,992 INFO L158 Benchmark]: Witness Printer took 55.70ms. Allocated memory is still 249.6MB. Free memory was 179.9MB in the beginning and 177.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-15 15:06:07,994 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 167.8MB. Free memory is still 123.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 269.38ms. Allocated memory is still 167.8MB. Free memory was 99.4MB in the beginning and 87.0MB in the end (delta: 12.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 21.96ms. Allocated memory is still 167.8MB. Free memory was 87.0MB in the beginning and 86.1MB in the end (delta: 965.4kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 29.63ms. Allocated memory is still 167.8MB. Free memory was 86.1MB in the beginning and 84.4MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 410.29ms. Allocated memory is still 167.8MB. Free memory was 84.4MB in the beginning and 130.8MB in the end (delta: -46.5MB). Peak memory consumption was 7.3MB. Max. memory is 16.1GB. * TraceAbstraction took 3678.67ms. Allocated memory was 167.8MB in the beginning and 249.6MB in the end (delta: 81.8MB). Free memory was 130.2MB in the beginning and 179.9MB in the end (delta: -49.7MB). Peak memory consumption was 35.1MB. Max. memory is 16.1GB. * Witness Printer took 55.70ms. Allocated memory is still 249.6MB. Free memory was 179.9MB in the beginning and 177.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 12]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 26 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 3.3s, OverallIterations: 5, TraceHistogramMax: 6, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 18 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 14 mSDsluCounter, 523 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 416 mSDsCounter, 13 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 294 IncrementalHoareTripleChecker+Invalid, 307 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 13 mSolverCounterUnsat, 107 mSDtfsCounter, 294 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 234 GetRequests, 183 SyntacticMatches, 4 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=39occurred in iteration=4, InterpolantAutomatonStates: 36, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 252 NumberOfCodeBlocks, 252 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 228 ConstructedInterpolants, 0 QuantifiedInterpolants, 873 SizeOfPredicates, 7 NumberOfNonLiveVariables, 342 ConjunctsInSsa, 64 ConjunctsInUnsatCore, 8 InterpolantComputations, 3 PerfectInterpolantSequences, 96/190 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 27]: Loop Invariant Derived loop invariant: (((((c + ((__int128) c * y)) == (y + ((__int128) y * y))) && ((((__int128) c * 2) + ((__int128) c * y)) == (((__int128) y * 2) + ((__int128) y * y)))) && (((((((__int128) y * y) * y) * y) + ((__int128) y * y)) + ((((__int128) y * y) * y) * 2)) == ((__int128) x * 4))) && ((c < k) || (((__int128) y * y) == ((__int128) k * y)))) - ProcedureContractResult [Line: 9]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert. Requires: (1 <= cond) Ensures: (1 <= cond) RESULT: Ultimate proved your program to be correct! [2024-10-15 15:06:08,015 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE