./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/hard-ll_valuebound1.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 6908dde5 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/hard-ll_valuebound1.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 0bb6780cd72c063a3ddf598e6503fa6a629155476e6b8e08224a0e59d0bc00b9 --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-6908dde-m [2024-09-24 23:46:32,545 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-24 23:46:32,599 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-24 23:46:32,603 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-24 23:46:32,604 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-24 23:46:32,629 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-24 23:46:32,630 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-24 23:46:32,630 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-24 23:46:32,631 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-24 23:46:32,632 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-24 23:46:32,632 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-24 23:46:32,632 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-24 23:46:32,633 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-24 23:46:32,634 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-24 23:46:32,634 INFO L153 SettingsManager]: * Use SBE=true [2024-09-24 23:46:32,634 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-24 23:46:32,635 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-24 23:46:32,635 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-24 23:46:32,635 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-24 23:46:32,635 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-24 23:46:32,635 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-24 23:46:32,639 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-24 23:46:32,639 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-24 23:46:32,639 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-24 23:46:32,639 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-24 23:46:32,639 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-24 23:46:32,640 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-24 23:46:32,640 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-24 23:46:32,640 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-24 23:46:32,640 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-24 23:46:32,640 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-24 23:46:32,640 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-24 23:46:32,641 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-24 23:46:32,641 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-24 23:46:32,641 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-24 23:46:32,641 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-24 23:46:32,641 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-24 23:46:32,641 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-24 23:46:32,641 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-24 23:46:32,642 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-24 23:46:32,642 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-24 23:46:32,643 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-24 23:46:32,643 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0bb6780cd72c063a3ddf598e6503fa6a629155476e6b8e08224a0e59d0bc00b9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Generate GraphML witnesses -> false [2024-09-24 23:46:32,857 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-24 23:46:32,874 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-24 23:46:32,876 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-24 23:46:32,877 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-24 23:46:32,878 INFO L274 PluginConnector]: CDTParser initialized [2024-09-24 23:46:32,878 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/nla-digbench-scaling/hard-ll_valuebound1.c [2024-09-24 23:46:34,111 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-24 23:46:34,223 INFO L384 CDTParser]: Found 1 translation units. [2024-09-24 23:46:34,223 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/hard-ll_valuebound1.c [2024-09-24 23:46:34,231 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/7ddc7dc19/223847b143064089ba2ac9a735a25b61/FLAGe211d7b59 [2024-09-24 23:46:34,244 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/7ddc7dc19/223847b143064089ba2ac9a735a25b61 [2024-09-24 23:46:34,246 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-24 23:46:34,247 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-24 23:46:34,248 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-24 23:46:34,248 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-24 23:46:34,256 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-24 23:46:34,257 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 11:46:34" (1/1) ... [2024-09-24 23:46:34,259 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48d62c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:46:34, skipping insertion in model container [2024-09-24 23:46:34,259 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 11:46:34" (1/1) ... [2024-09-24 23:46:34,276 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-24 23:46:34,410 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/hard-ll_valuebound1.c[538,551] [2024-09-24 23:46:34,433 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-24 23:46:34,444 INFO L200 MainTranslator]: Completed pre-run [2024-09-24 23:46:34,454 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/hard-ll_valuebound1.c[538,551] [2024-09-24 23:46:34,464 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-24 23:46:34,483 INFO L204 MainTranslator]: Completed translation [2024-09-24 23:46:34,483 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:46:34 WrapperNode [2024-09-24 23:46:34,484 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-24 23:46:34,484 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-24 23:46:34,485 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-24 23:46:34,485 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-24 23:46:34,491 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:46:34" (1/1) ... [2024-09-24 23:46:34,503 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:46:34" (1/1) ... [2024-09-24 23:46:34,511 INFO L138 Inliner]: procedures = 14, calls = 17, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-24 23:46:34,511 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-24 23:46:34,512 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-24 23:46:34,512 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-24 23:46:34,512 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-24 23:46:34,522 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:46:34" (1/1) ... [2024-09-24 23:46:34,523 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:46:34" (1/1) ... [2024-09-24 23:46:34,557 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:46:34" (1/1) ... [2024-09-24 23:46:34,574 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]. [2024-09-24 23:46:34,577 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:46:34" (1/1) ... [2024-09-24 23:46:34,578 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:46:34" (1/1) ... [2024-09-24 23:46:34,580 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:46:34" (1/1) ... [2024-09-24 23:46:34,585 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:46:34" (1/1) ... [2024-09-24 23:46:34,587 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:46:34" (1/1) ... [2024-09-24 23:46:34,588 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:46:34" (1/1) ... [2024-09-24 23:46:34,591 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-24 23:46:34,592 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-24 23:46:34,592 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-24 23:46:34,596 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-24 23:46:34,597 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:46:34" (1/1) ... [2024-09-24 23:46:34,601 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-24 23:46:34,631 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:46:34,646 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) [2024-09-24 23:46:34,652 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 [2024-09-24 23:46:34,692 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-24 23:46:34,693 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-09-24 23:46:34,693 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-09-24 23:46:34,693 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-24 23:46:34,693 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-24 23:46:34,693 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-24 23:46:34,693 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-24 23:46:34,695 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-24 23:46:34,695 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-24 23:46:34,695 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-24 23:46:34,696 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-24 23:46:34,696 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-24 23:46:34,745 INFO L241 CfgBuilder]: Building ICFG [2024-09-24 23:46:34,747 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-24 23:46:34,875 INFO L? ?]: Removed 5 outVars from TransFormulas that were not future-live. [2024-09-24 23:46:34,876 INFO L290 CfgBuilder]: Performing block encoding [2024-09-24 23:46:34,902 INFO L312 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-24 23:46:34,903 INFO L317 CfgBuilder]: Removed 2 assume(true) statements. [2024-09-24 23:46:34,903 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 11:46:34 BoogieIcfgContainer [2024-09-24 23:46:34,903 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-24 23:46:34,905 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-24 23:46:34,905 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-24 23:46:34,908 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-24 23:46:34,908 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 11:46:34" (1/3) ... [2024-09-24 23:46:34,908 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e409f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 11:46:34, skipping insertion in model container [2024-09-24 23:46:34,909 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:46:34" (2/3) ... [2024-09-24 23:46:34,909 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e409f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 11:46:34, skipping insertion in model container [2024-09-24 23:46:34,909 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 11:46:34" (3/3) ... [2024-09-24 23:46:34,910 INFO L112 eAbstractionObserver]: Analyzing ICFG hard-ll_valuebound1.c [2024-09-24 23:46:34,922 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-24 23:46:34,923 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-24 23:46:34,965 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-24 23:46:34,970 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;@7a44a26, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-24 23:46:34,971 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-24 23:46:34,975 INFO L276 IsEmpty]: Start isEmpty. Operand has 36 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 19 states have internal predecessors, (28), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-09-24 23:46:34,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-09-24 23:46:34,987 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:46:34,987 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:46:34,988 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:46:34,994 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:46:34,994 INFO L85 PathProgramCache]: Analyzing trace with hash 367441184, now seen corresponding path program 1 times [2024-09-24 23:46:35,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:46:35,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638269236] [2024-09-24 23:46:35,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:46:35,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:46:35,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:46:35,123 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:46:35,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:46:35,132 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-24 23:46:35,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:46:35,138 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-24 23:46:35,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:46:35,145 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-24 23:46:35,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:46:35,151 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-24 23:46:35,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:46:35,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638269236] [2024-09-24 23:46:35,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638269236] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-24 23:46:35,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-24 23:46:35,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-24 23:46:35,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766375128] [2024-09-24 23:46:35,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-24 23:46:35,157 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-09-24 23:46:35,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:46:35,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-09-24 23:46:35,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-24 23:46:35,174 INFO L87 Difference]: Start difference. First operand has 36 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 19 states have internal predecessors, (28), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-09-24 23:46:35,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:46:35,205 INFO L93 Difference]: Finished difference Result 66 states and 107 transitions. [2024-09-24 23:46:35,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-24 23:46:35,207 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 27 [2024-09-24 23:46:35,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:46:35,212 INFO L225 Difference]: With dead ends: 66 [2024-09-24 23:46:35,212 INFO L226 Difference]: Without dead ends: 32 [2024-09-24 23:46:35,215 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-24 23:46:35,218 INFO L434 NwaCegarLoop]: 44 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, 44 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 [2024-09-24 23:46:35,218 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 44 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-24 23:46:35,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-09-24 23:46:35,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2024-09-24 23:46:35,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 16 states have (on average 1.25) internal successors, (20), 17 states have internal predecessors, (20), 12 states have call successors, (12), 4 states have call predecessors, (12), 3 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-09-24 23:46:35,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 42 transitions. [2024-09-24 23:46:35,256 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 42 transitions. Word has length 27 [2024-09-24 23:46:35,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:46:35,257 INFO L474 AbstractCegarLoop]: Abstraction has 32 states and 42 transitions. [2024-09-24 23:46:35,257 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-09-24 23:46:35,257 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:46:35,258 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 42 transitions. [2024-09-24 23:46:35,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-09-24 23:46:35,260 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:46:35,260 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:46:35,261 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-24 23:46:35,261 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:46:35,262 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:46:35,262 INFO L85 PathProgramCache]: Analyzing trace with hash -781266146, now seen corresponding path program 1 times [2024-09-24 23:46:35,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:46:35,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226046762] [2024-09-24 23:46:35,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:46:35,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:46:35,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:46:35,453 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:46:35,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:46:35,457 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-24 23:46:35,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:46:35,460 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-24 23:46:35,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:46:35,464 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-24 23:46:35,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:46:35,467 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-24 23:46:35,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:46:35,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226046762] [2024-09-24 23:46:35,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226046762] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-24 23:46:35,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-24 23:46:35,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-24 23:46:35,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005523846] [2024-09-24 23:46:35,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-24 23:46:35,469 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-24 23:46:35,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:46:35,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-24 23:46:35,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-24 23:46:35,472 INFO L87 Difference]: Start difference. First operand 32 states and 42 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-09-24 23:46:35,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:46:35,539 INFO L93 Difference]: Finished difference Result 45 states and 59 transitions. [2024-09-24 23:46:35,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-24 23:46:35,540 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 27 [2024-09-24 23:46:35,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:46:35,541 INFO L225 Difference]: With dead ends: 45 [2024-09-24 23:46:35,541 INFO L226 Difference]: Without dead ends: 43 [2024-09-24 23:46:35,541 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-24 23:46:35,542 INFO L434 NwaCegarLoop]: 37 mSDtfsCounter, 9 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-24 23:46:35,543 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 134 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-24 23:46:35,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2024-09-24 23:46:35,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 36. [2024-09-24 23:46:35,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 20 states have internal predecessors, (23), 12 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-09-24 23:46:35,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 45 transitions. [2024-09-24 23:46:35,558 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 45 transitions. Word has length 27 [2024-09-24 23:46:35,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:46:35,558 INFO L474 AbstractCegarLoop]: Abstraction has 36 states and 45 transitions. [2024-09-24 23:46:35,559 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-09-24 23:46:35,559 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:46:35,559 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 45 transitions. [2024-09-24 23:46:35,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-09-24 23:46:35,560 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:46:35,560 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:46:35,560 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-09-24 23:46:35,562 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:46:35,563 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:46:35,564 INFO L85 PathProgramCache]: Analyzing trace with hash 992341126, now seen corresponding path program 1 times [2024-09-24 23:46:35,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:46:35,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883419459] [2024-09-24 23:46:35,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:46:35,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:46:35,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:46:35,755 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:46:35,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:46:35,762 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-24 23:46:35,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:46:35,764 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-24 23:46:35,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:46:35,766 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-24 23:46:35,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:46:35,768 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-24 23:46:35,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:46:35,772 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-24 23:46:35,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:46:35,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883419459] [2024-09-24 23:46:35,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883419459] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-24 23:46:35,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-24 23:46:35,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-24 23:46:35,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216134007] [2024-09-24 23:46:35,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-24 23:46:35,774 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-24 23:46:35,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:46:35,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-24 23:46:35,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-24 23:46:35,775 INFO L87 Difference]: Start difference. First operand 36 states and 45 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, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-09-24 23:46:35,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:46:35,831 INFO L93 Difference]: Finished difference Result 49 states and 62 transitions. [2024-09-24 23:46:35,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-24 23:46:35,832 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, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 32 [2024-09-24 23:46:35,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:46:35,833 INFO L225 Difference]: With dead ends: 49 [2024-09-24 23:46:35,833 INFO L226 Difference]: Without dead ends: 47 [2024-09-24 23:46:35,833 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-24 23:46:35,834 INFO L434 NwaCegarLoop]: 37 mSDtfsCounter, 9 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-24 23:46:35,834 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 131 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-24 23:46:35,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2024-09-24 23:46:35,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 40. [2024-09-24 23:46:35,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 23 states have internal predecessors, (26), 12 states have call successors, (12), 6 states have call predecessors, (12), 5 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-09-24 23:46:35,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2024-09-24 23:46:35,841 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 32 [2024-09-24 23:46:35,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:46:35,841 INFO L474 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2024-09-24 23:46:35,842 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-09-24 23:46:35,842 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:46:35,842 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2024-09-24 23:46:35,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-09-24 23:46:35,843 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:46:35,843 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:46:35,843 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-09-24 23:46:35,843 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:46:35,843 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:46:35,843 INFO L85 PathProgramCache]: Analyzing trace with hash -1500804130, now seen corresponding path program 1 times [2024-09-24 23:46:35,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:46:35,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624711680] [2024-09-24 23:46:35,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:46:35,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:46:35,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-24 23:46:35,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [515994135] [2024-09-24 23:46:35,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:46:35,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:46:35,870 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:46:35,874 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) [2024-09-24 23:46:35,875 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-24 23:46:35,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:46:35,928 INFO L262 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-09-24 23:46:35,937 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:46:36,022 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-09-24 23:46:36,026 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-24 23:46:36,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:46:36,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624711680] [2024-09-24 23:46:36,027 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-24 23:46:36,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [515994135] [2024-09-24 23:46:36,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [515994135] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-24 23:46:36,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-24 23:46:36,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-24 23:46:36,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221135694] [2024-09-24 23:46:36,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-24 23:46:36,028 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-24 23:46:36,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:46:36,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-24 23:46:36,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-24 23:46:36,028 INFO L87 Difference]: Start difference. First operand 40 states and 48 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, (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) [2024-09-24 23:46:36,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:46:36,100 INFO L93 Difference]: Finished difference Result 66 states and 85 transitions. [2024-09-24 23:46:36,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-24 23:46:36,100 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, (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 37 [2024-09-24 23:46:36,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:46:36,102 INFO L225 Difference]: With dead ends: 66 [2024-09-24 23:46:36,102 INFO L226 Difference]: Without dead ends: 53 [2024-09-24 23:46:36,103 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-24 23:46:36,104 INFO L434 NwaCegarLoop]: 37 mSDtfsCounter, 5 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-24 23:46:36,104 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 132 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-24 23:46:36,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2024-09-24 23:46:36,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2024-09-24 23:46:36,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 29 states have (on average 1.1724137931034482) internal successors, (34), 30 states have internal predecessors, (34), 17 states have call successors, (17), 7 states have call predecessors, (17), 6 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-09-24 23:46:36,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 66 transitions. [2024-09-24 23:46:36,114 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 66 transitions. Word has length 37 [2024-09-24 23:46:36,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:46:36,115 INFO L474 AbstractCegarLoop]: Abstraction has 53 states and 66 transitions. [2024-09-24 23:46:36,115 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (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) [2024-09-24 23:46:36,115 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:46:36,115 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 66 transitions. [2024-09-24 23:46:36,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-09-24 23:46:36,116 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:46:36,116 INFO L216 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:46:36,131 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-09-24 23:46:36,320 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:46:36,320 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:46:36,321 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:46:36,321 INFO L85 PathProgramCache]: Analyzing trace with hash -1357220557, now seen corresponding path program 1 times [2024-09-24 23:46:36,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:46:36,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974674806] [2024-09-24 23:46:36,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:46:36,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:46:36,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-24 23:46:36,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [179728748] [2024-09-24 23:46:36,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:46:36,334 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:46:36,334 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:46:36,335 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) [2024-09-24 23:46:36,337 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-24 23:46:36,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:46:36,371 INFO L262 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-09-24 23:46:36,373 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:46:36,475 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-09-24 23:46:36,475 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:46:36,680 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-09-24 23:46:36,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:46:36,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974674806] [2024-09-24 23:46:36,681 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-24 23:46:36,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [179728748] [2024-09-24 23:46:36,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [179728748] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-24 23:46:36,681 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-24 23:46:36,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2024-09-24 23:46:36,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399247023] [2024-09-24 23:46:36,681 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-24 23:46:36,682 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-09-24 23:46:36,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:46:36,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-09-24 23:46:36,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-09-24 23:46:36,683 INFO L87 Difference]: Start difference. First operand 53 states and 66 transitions. Second operand has 10 states, 10 states have (on average 2.5) internal successors, (25), 9 states have internal predecessors, (25), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) [2024-09-24 23:46:36,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:46:36,779 INFO L93 Difference]: Finished difference Result 68 states and 86 transitions. [2024-09-24 23:46:36,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-09-24 23:46:36,780 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.5) internal successors, (25), 9 states have internal predecessors, (25), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) Word has length 44 [2024-09-24 23:46:36,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:46:36,782 INFO L225 Difference]: With dead ends: 68 [2024-09-24 23:46:36,782 INFO L226 Difference]: Without dead ends: 66 [2024-09-24 23:46:36,782 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 78 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-09-24 23:46:36,783 INFO L434 NwaCegarLoop]: 28 mSDtfsCounter, 11 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-24 23:46:36,783 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 147 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-24 23:46:36,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2024-09-24 23:46:36,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 63. [2024-09-24 23:46:36,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 35 states have (on average 1.2) internal successors, (42), 37 states have internal predecessors, (42), 20 states have call successors, (20), 8 states have call predecessors, (20), 7 states have return successors, (18), 17 states have call predecessors, (18), 18 states have call successors, (18) [2024-09-24 23:46:36,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 80 transitions. [2024-09-24 23:46:36,803 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 80 transitions. Word has length 44 [2024-09-24 23:46:36,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:46:36,807 INFO L474 AbstractCegarLoop]: Abstraction has 63 states and 80 transitions. [2024-09-24 23:46:36,807 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.5) internal successors, (25), 9 states have internal predecessors, (25), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) [2024-09-24 23:46:36,807 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:46:36,808 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 80 transitions. [2024-09-24 23:46:36,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-09-24 23:46:36,809 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:46:36,809 INFO L216 NwaCegarLoop]: trace histogram [6, 5, 5, 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] [2024-09-24 23:46:36,822 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-09-24 23:46:37,009 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:46:37,010 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:46:37,010 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:46:37,010 INFO L85 PathProgramCache]: Analyzing trace with hash 1728018148, now seen corresponding path program 1 times [2024-09-24 23:46:37,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:46:37,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858581929] [2024-09-24 23:46:37,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:46:37,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:46:37,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-24 23:46:37,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [84743252] [2024-09-24 23:46:37,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:46:37,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:46:37,023 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:46:37,025 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) [2024-09-24 23:46:37,030 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-24 23:46:37,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:46:37,067 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-09-24 23:46:37,068 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:46:37,202 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 16 proven. 4 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-09-24 23:46:37,204 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:46:37,309 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-09-24 23:46:37,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:46:37,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858581929] [2024-09-24 23:46:37,310 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-24 23:46:37,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [84743252] [2024-09-24 23:46:37,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [84743252] provided 1 perfect and 1 imperfect interpolant sequences [2024-09-24 23:46:37,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-24 23:46:37,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 11 [2024-09-24 23:46:37,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296990509] [2024-09-24 23:46:37,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-24 23:46:37,312 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-24 23:46:37,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:46:37,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-24 23:46:37,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-09-24 23:46:37,313 INFO L87 Difference]: Start difference. First operand 63 states and 80 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-09-24 23:46:37,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:46:37,371 INFO L93 Difference]: Finished difference Result 73 states and 92 transitions. [2024-09-24 23:46:37,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-24 23:46:37,371 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 54 [2024-09-24 23:46:37,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:46:37,372 INFO L225 Difference]: With dead ends: 73 [2024-09-24 23:46:37,374 INFO L226 Difference]: Without dead ends: 71 [2024-09-24 23:46:37,374 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 96 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-09-24 23:46:37,375 INFO L434 NwaCegarLoop]: 36 mSDtfsCounter, 5 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-24 23:46:37,375 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 125 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-24 23:46:37,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2024-09-24 23:46:37,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 70. [2024-09-24 23:46:37,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 39 states have (on average 1.1794871794871795) internal successors, (46), 42 states have internal predecessors, (46), 22 states have call successors, (22), 9 states have call predecessors, (22), 8 states have return successors, (20), 18 states have call predecessors, (20), 20 states have call successors, (20) [2024-09-24 23:46:37,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 88 transitions. [2024-09-24 23:46:37,391 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 88 transitions. Word has length 54 [2024-09-24 23:46:37,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:46:37,391 INFO L474 AbstractCegarLoop]: Abstraction has 70 states and 88 transitions. [2024-09-24 23:46:37,391 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-09-24 23:46:37,392 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:46:37,392 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 88 transitions. [2024-09-24 23:46:37,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-09-24 23:46:37,393 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:46:37,393 INFO L216 NwaCegarLoop]: trace histogram [7, 6, 6, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:46:37,407 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-09-24 23:46:37,597 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-09-24 23:46:37,598 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:46:37,598 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:46:37,598 INFO L85 PathProgramCache]: Analyzing trace with hash 515743006, now seen corresponding path program 1 times [2024-09-24 23:46:37,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:46:37,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683487755] [2024-09-24 23:46:37,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:46:37,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:46:37,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:46:37,670 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:46:37,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:46:37,674 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-24 23:46:37,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:46:37,677 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-24 23:46:37,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:46:37,678 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-24 23:46:37,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:46:37,682 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-24 23:46:37,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:46:37,686 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-24 23:46:37,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:46:37,689 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-24 23:46:37,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:46:37,693 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-24 23:46:37,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:46:37,700 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-24 23:46:37,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:46:37,705 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-24 23:46:37,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:46:37,710 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-09-24 23:46:37,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:46:37,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683487755] [2024-09-24 23:46:37,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [683487755] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-24 23:46:37,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-24 23:46:37,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-24 23:46:37,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827719335] [2024-09-24 23:46:37,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-24 23:46:37,711 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-24 23:46:37,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:46:37,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-24 23:46:37,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-24 23:46:37,714 INFO L87 Difference]: Start difference. First operand 70 states and 88 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-09-24 23:46:37,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:46:37,765 INFO L93 Difference]: Finished difference Result 78 states and 96 transitions. [2024-09-24 23:46:37,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-24 23:46:37,769 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 60 [2024-09-24 23:46:37,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:46:37,770 INFO L225 Difference]: With dead ends: 78 [2024-09-24 23:46:37,770 INFO L226 Difference]: Without dead ends: 66 [2024-09-24 23:46:37,771 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-24 23:46:37,771 INFO L434 NwaCegarLoop]: 40 mSDtfsCounter, 3 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-24 23:46:37,771 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 142 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-24 23:46:37,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2024-09-24 23:46:37,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2024-09-24 23:46:37,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 37 states have (on average 1.162162162162162) internal successors, (43), 40 states have internal predecessors, (43), 20 states have call successors, (20), 9 states have call predecessors, (20), 8 states have return successors, (18), 16 states have call predecessors, (18), 18 states have call successors, (18) [2024-09-24 23:46:37,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 81 transitions. [2024-09-24 23:46:37,785 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 81 transitions. Word has length 60 [2024-09-24 23:46:37,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:46:37,785 INFO L474 AbstractCegarLoop]: Abstraction has 66 states and 81 transitions. [2024-09-24 23:46:37,786 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-09-24 23:46:37,786 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:46:37,786 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 81 transitions. [2024-09-24 23:46:37,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-09-24 23:46:37,788 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:46:37,788 INFO L216 NwaCegarLoop]: trace histogram [9, 8, 8, 3, 3, 3, 2, 2, 2, 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, 1, 1, 1] [2024-09-24 23:46:37,788 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-09-24 23:46:37,788 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:46:37,789 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:46:37,789 INFO L85 PathProgramCache]: Analyzing trace with hash -1452252536, now seen corresponding path program 1 times [2024-09-24 23:46:37,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:46:37,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055906471] [2024-09-24 23:46:37,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:46:37,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:46:37,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-24 23:46:37,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [301197270] [2024-09-24 23:46:37,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:46:37,822 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:46:37,822 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:46:37,823 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) [2024-09-24 23:46:37,824 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-24 23:46:37,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:46:37,880 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-09-24 23:46:37,882 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:46:38,347 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 22 proven. 7 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2024-09-24 23:46:38,348 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:46:39,909 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 16 proven. 7 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2024-09-24 23:46:39,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:46:39,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055906471] [2024-09-24 23:46:39,909 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-24 23:46:39,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [301197270] [2024-09-24 23:46:39,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [301197270] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-24 23:46:39,910 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-24 23:46:39,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9] total 20 [2024-09-24 23:46:39,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687858817] [2024-09-24 23:46:39,910 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-24 23:46:39,911 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-09-24 23:46:39,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:46:39,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-09-24 23:46:39,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2024-09-24 23:46:39,913 INFO L87 Difference]: Start difference. First operand 66 states and 81 transitions. Second operand has 20 states, 19 states have (on average 1.8421052631578947) internal successors, (35), 16 states have internal predecessors, (35), 10 states have call successors, (24), 3 states have call predecessors, (24), 2 states have return successors, (22), 9 states have call predecessors, (22), 8 states have call successors, (22) [2024-09-24 23:46:40,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:46:40,337 INFO L93 Difference]: Finished difference Result 122 states and 155 transitions. [2024-09-24 23:46:40,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-09-24 23:46:40,337 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.8421052631578947) internal successors, (35), 16 states have internal predecessors, (35), 10 states have call successors, (24), 3 states have call predecessors, (24), 2 states have return successors, (22), 9 states have call predecessors, (22), 8 states have call successors, (22) Word has length 74 [2024-09-24 23:46:40,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:46:40,339 INFO L225 Difference]: With dead ends: 122 [2024-09-24 23:46:40,339 INFO L226 Difference]: Without dead ends: 99 [2024-09-24 23:46:40,339 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=118, Invalid=434, Unknown=0, NotChecked=0, Total=552 [2024-09-24 23:46:40,340 INFO L434 NwaCegarLoop]: 30 mSDtfsCounter, 40 mSDsluCounter, 299 mSDsCounter, 0 mSdLazyCounter, 326 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 329 SdHoareTripleChecker+Invalid, 394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-24 23:46:40,340 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 329 Invalid, 394 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 326 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-24 23:46:40,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2024-09-24 23:46:40,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 92. [2024-09-24 23:46:40,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 54 states have (on average 1.1296296296296295) internal successors, (61), 57 states have internal predecessors, (61), 25 states have call successors, (25), 13 states have call predecessors, (25), 12 states have return successors, (23), 21 states have call predecessors, (23), 23 states have call successors, (23) [2024-09-24 23:46:40,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 109 transitions. [2024-09-24 23:46:40,355 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 109 transitions. Word has length 74 [2024-09-24 23:46:40,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:46:40,355 INFO L474 AbstractCegarLoop]: Abstraction has 92 states and 109 transitions. [2024-09-24 23:46:40,355 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.8421052631578947) internal successors, (35), 16 states have internal predecessors, (35), 10 states have call successors, (24), 3 states have call predecessors, (24), 2 states have return successors, (22), 9 states have call predecessors, (22), 8 states have call successors, (22) [2024-09-24 23:46:40,355 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:46:40,355 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 109 transitions. [2024-09-24 23:46:40,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-09-24 23:46:40,356 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:46:40,356 INFO L216 NwaCegarLoop]: trace histogram [11, 10, 10, 3, 3, 3, 2, 2, 2, 2, 2, 2, 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, 1, 1] [2024-09-24 23:46:40,371 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-09-24 23:46:40,560 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:46:40,561 INFO L399 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:46:40,561 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:46:40,562 INFO L85 PathProgramCache]: Analyzing trace with hash -1571705391, now seen corresponding path program 1 times [2024-09-24 23:46:40,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:46:40,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226152037] [2024-09-24 23:46:40,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:46:40,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:46:40,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-24 23:46:40,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1868502126] [2024-09-24 23:46:40,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:46:40,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:46:40,591 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:46:40,594 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-24 23:46:40,595 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-09-24 23:46:40,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:46:40,637 INFO L262 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-09-24 23:46:40,643 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:46:40,930 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 26 proven. 9 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2024-09-24 23:46:40,930 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:46:41,491 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 20 proven. 9 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2024-09-24 23:46:41,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:46:41,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226152037] [2024-09-24 23:46:41,491 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-24 23:46:41,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1868502126] [2024-09-24 23:46:41,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1868502126] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-24 23:46:41,492 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-24 23:46:41,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 9] total 21 [2024-09-24 23:46:41,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242971649] [2024-09-24 23:46:41,493 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-24 23:46:41,493 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-09-24 23:46:41,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:46:41,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-09-24 23:46:41,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=348, Unknown=0, NotChecked=0, Total=420 [2024-09-24 23:46:41,496 INFO L87 Difference]: Start difference. First operand 92 states and 109 transitions. Second operand has 21 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 17 states have internal predecessors, (37), 12 states have call successors, (28), 3 states have call predecessors, (28), 2 states have return successors, (26), 11 states have call predecessors, (26), 10 states have call successors, (26) [2024-09-24 23:46:42,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:46:42,211 INFO L93 Difference]: Finished difference Result 133 states and 169 transitions. [2024-09-24 23:46:42,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-09-24 23:46:42,212 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 17 states have internal predecessors, (37), 12 states have call successors, (28), 3 states have call predecessors, (28), 2 states have return successors, (26), 11 states have call predecessors, (26), 10 states have call successors, (26) Word has length 85 [2024-09-24 23:46:42,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:46:42,213 INFO L225 Difference]: With dead ends: 133 [2024-09-24 23:46:42,213 INFO L226 Difference]: Without dead ends: 129 [2024-09-24 23:46:42,214 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=215, Invalid=907, Unknown=0, NotChecked=0, Total=1122 [2024-09-24 23:46:42,214 INFO L434 NwaCegarLoop]: 37 mSDtfsCounter, 57 mSDsluCounter, 307 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 344 SdHoareTripleChecker+Invalid, 349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-24 23:46:42,214 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 344 Invalid, 349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 277 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-24 23:46:42,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2024-09-24 23:46:42,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 110. [2024-09-24 23:46:42,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 65 states have (on average 1.1692307692307693) internal successors, (76), 68 states have internal predecessors, (76), 31 states have call successors, (31), 14 states have call predecessors, (31), 13 states have return successors, (29), 27 states have call predecessors, (29), 29 states have call successors, (29) [2024-09-24 23:46:42,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 136 transitions. [2024-09-24 23:46:42,241 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 136 transitions. Word has length 85 [2024-09-24 23:46:42,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:46:42,242 INFO L474 AbstractCegarLoop]: Abstraction has 110 states and 136 transitions. [2024-09-24 23:46:42,242 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 17 states have internal predecessors, (37), 12 states have call successors, (28), 3 states have call predecessors, (28), 2 states have return successors, (26), 11 states have call predecessors, (26), 10 states have call successors, (26) [2024-09-24 23:46:42,242 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:46:42,242 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 136 transitions. [2024-09-24 23:46:42,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-09-24 23:46:42,243 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:46:42,243 INFO L216 NwaCegarLoop]: trace histogram [13, 12, 12, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:46:42,257 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-09-24 23:46:42,447 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:46:42,448 INFO L399 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:46:42,448 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:46:42,448 INFO L85 PathProgramCache]: Analyzing trace with hash 1204328542, now seen corresponding path program 1 times [2024-09-24 23:46:42,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:46:42,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122997888] [2024-09-24 23:46:42,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:46:42,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:46:42,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:46:42,535 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:46:42,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:46:42,537 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-24 23:46:42,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:46:42,539 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-24 23:46:42,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:46:42,540 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-24 23:46:42,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:46:42,542 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-24 23:46:42,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:46:42,544 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-24 23:46:42,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:46:42,547 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-24 23:46:42,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:46:42,550 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-24 23:46:42,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:46:42,553 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-24 23:46:42,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:46:42,555 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-24 23:46:42,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:46:42,558 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-09-24 23:46:42,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:46:42,561 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-24 23:46:42,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:46:42,565 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-24 23:46:42,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:46:42,568 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-09-24 23:46:42,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:46:42,571 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-09-24 23:46:42,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:46:42,576 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-09-24 23:46:42,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:46:42,578 INFO L134 CoverageAnalysis]: Checked inductivity of 315 backedges. 29 proven. 10 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2024-09-24 23:46:42,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:46:42,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122997888] [2024-09-24 23:46:42,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122997888] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 23:46:42,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [181244291] [2024-09-24 23:46:42,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:46:42,578 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:46:42,579 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:46:42,581 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-24 23:46:42,583 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-09-24 23:46:42,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:46:42,622 INFO L262 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-09-24 23:46:42,623 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:46:42,651 INFO L134 CoverageAnalysis]: Checked inductivity of 315 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 234 trivial. 0 not checked. [2024-09-24 23:46:42,651 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-24 23:46:42,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [181244291] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-24 23:46:42,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-24 23:46:42,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2024-09-24 23:46:42,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377150830] [2024-09-24 23:46:42,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-24 23:46:42,652 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-24 23:46:42,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:46:42,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-24 23:46:42,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-09-24 23:46:42,652 INFO L87 Difference]: Start difference. First operand 110 states and 136 transitions. Second operand has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 5 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 5 states have call predecessors, (16), 5 states have call successors, (16) [2024-09-24 23:46:42,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:46:42,702 INFO L93 Difference]: Finished difference Result 132 states and 165 transitions. [2024-09-24 23:46:42,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-24 23:46:42,703 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 5 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 5 states have call predecessors, (16), 5 states have call successors, (16) Word has length 94 [2024-09-24 23:46:42,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:46:42,704 INFO L225 Difference]: With dead ends: 132 [2024-09-24 23:46:42,704 INFO L226 Difference]: Without dead ends: 120 [2024-09-24 23:46:42,704 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-09-24 23:46:42,705 INFO L434 NwaCegarLoop]: 57 mSDtfsCounter, 10 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-24 23:46:42,705 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 98 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-24 23:46:42,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2024-09-24 23:46:42,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2024-09-24 23:46:42,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 71 states have (on average 1.1690140845070423) internal successors, (83), 73 states have internal predecessors, (83), 35 states have call successors, (35), 14 states have call predecessors, (35), 13 states have return successors, (33), 32 states have call predecessors, (33), 33 states have call successors, (33) [2024-09-24 23:46:42,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 151 transitions. [2024-09-24 23:46:42,728 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 151 transitions. Word has length 94 [2024-09-24 23:46:42,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:46:42,728 INFO L474 AbstractCegarLoop]: Abstraction has 120 states and 151 transitions. [2024-09-24 23:46:42,728 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 5 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 5 states have call predecessors, (16), 5 states have call successors, (16) [2024-09-24 23:46:42,729 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:46:42,729 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 151 transitions. [2024-09-24 23:46:42,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-09-24 23:46:42,730 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:46:42,730 INFO L216 NwaCegarLoop]: trace histogram [13, 12, 12, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 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] [2024-09-24 23:46:42,741 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-09-24 23:46:42,930 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-09-24 23:46:42,931 INFO L399 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:46:42,931 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:46:42,931 INFO L85 PathProgramCache]: Analyzing trace with hash 1544157164, now seen corresponding path program 2 times [2024-09-24 23:46:42,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:46:42,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763600498] [2024-09-24 23:46:42,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:46:42,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:46:42,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:46:43,074 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:46:43,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:46:43,076 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-24 23:46:43,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:46:43,077 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-24 23:46:43,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:46:43,082 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-24 23:46:43,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:46:43,083 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-24 23:46:43,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:46:43,087 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-24 23:46:43,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:46:43,089 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-24 23:46:43,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:46:43,091 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-24 23:46:43,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:46:43,093 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-24 23:46:43,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:46:43,097 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-24 23:46:43,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:46:43,100 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-09-24 23:46:43,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:46:43,102 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-24 23:46:43,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:46:43,104 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-09-24 23:46:43,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:46:43,107 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-24 23:46:43,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:46:43,109 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-09-24 23:46:43,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:46:43,113 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-09-24 23:46:43,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:46:43,115 INFO L134 CoverageAnalysis]: Checked inductivity of 318 backedges. 33 proven. 9 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2024-09-24 23:46:43,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:46:43,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763600498] [2024-09-24 23:46:43,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763600498] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 23:46:43,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1186359405] [2024-09-24 23:46:43,117 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-24 23:46:43,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:46:43,118 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:46:43,121 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-24 23:46:43,122 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-09-24 23:46:43,168 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-24 23:46:43,168 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-24 23:46:43,169 INFO L262 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-09-24 23:46:43,170 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:46:43,193 INFO L134 CoverageAnalysis]: Checked inductivity of 318 backedges. 109 proven. 9 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2024-09-24 23:46:43,194 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:46:43,279 INFO L134 CoverageAnalysis]: Checked inductivity of 318 backedges. 33 proven. 9 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2024-09-24 23:46:43,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1186359405] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-24 23:46:43,279 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-24 23:46:43,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2024-09-24 23:46:43,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169444523] [2024-09-24 23:46:43,280 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-24 23:46:43,280 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-24 23:46:43,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:46:43,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-24 23:46:43,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-09-24 23:46:43,282 INFO L87 Difference]: Start difference. First operand 120 states and 151 transitions. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 5 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 5 states have call predecessors, (23), 5 states have call successors, (23) [2024-09-24 23:46:43,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:46:43,331 INFO L93 Difference]: Finished difference Result 146 states and 183 transitions. [2024-09-24 23:46:43,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-24 23:46:43,332 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 5 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 5 states have call predecessors, (23), 5 states have call successors, (23) Word has length 98 [2024-09-24 23:46:43,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:46:43,333 INFO L225 Difference]: With dead ends: 146 [2024-09-24 23:46:43,333 INFO L226 Difference]: Without dead ends: 101 [2024-09-24 23:46:43,334 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 229 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-09-24 23:46:43,335 INFO L434 NwaCegarLoop]: 50 mSDtfsCounter, 0 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-24 23:46:43,335 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 123 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-24 23:46:43,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2024-09-24 23:46:43,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2024-09-24 23:46:43,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 59 states have (on average 1.1355932203389831) internal successors, (67), 61 states have internal predecessors, (67), 29 states have call successors, (29), 13 states have call predecessors, (29), 12 states have return successors, (27), 26 states have call predecessors, (27), 27 states have call successors, (27) [2024-09-24 23:46:43,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 123 transitions. [2024-09-24 23:46:43,357 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 123 transitions. Word has length 98 [2024-09-24 23:46:43,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:46:43,358 INFO L474 AbstractCegarLoop]: Abstraction has 101 states and 123 transitions. [2024-09-24 23:46:43,359 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 5 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 5 states have call predecessors, (23), 5 states have call successors, (23) [2024-09-24 23:46:43,359 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:46:43,359 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 123 transitions. [2024-09-24 23:46:43,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2024-09-24 23:46:43,360 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:46:43,360 INFO L216 NwaCegarLoop]: trace histogram [16, 15, 15, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:46:43,372 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-09-24 23:46:43,564 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:46:43,565 INFO L399 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:46:43,566 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:46:43,566 INFO L85 PathProgramCache]: Analyzing trace with hash -1973122394, now seen corresponding path program 3 times [2024-09-24 23:46:43,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:46:43,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469593182] [2024-09-24 23:46:43,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:46:43,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:46:43,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:46:43,778 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:46:43,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:46:43,780 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-24 23:46:43,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:46:43,804 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-24 23:46:43,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:46:43,807 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-24 23:46:43,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:46:43,811 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-24 23:46:43,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:46:43,818 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-24 23:46:43,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:46:43,824 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-24 23:46:43,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:46:43,831 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-24 23:46:43,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:46:43,837 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-24 23:46:43,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:46:43,845 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-24 23:46:43,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:46:43,854 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-09-24 23:46:43,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:46:43,856 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-24 23:46:43,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:46:43,863 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-24 23:46:43,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:46:43,867 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-09-24 23:46:43,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:46:43,868 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-09-24 23:46:43,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:46:43,869 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-24 23:46:43,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:46:43,871 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-09-24 23:46:43,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:46:43,872 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2024-09-24 23:46:43,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:46:43,873 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-24 23:46:43,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:46:43,876 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 30 proven. 21 refuted. 0 times theorem prover too weak. 439 trivial. 0 not checked. [2024-09-24 23:46:43,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:46:43,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469593182] [2024-09-24 23:46:43,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469593182] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 23:46:43,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [74922784] [2024-09-24 23:46:43,876 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-24 23:46:43,876 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:46:43,876 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:46:43,878 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-24 23:46:43,879 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-09-24 23:46:43,920 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-09-24 23:46:43,920 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-24 23:46:43,921 INFO L262 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-09-24 23:46:43,923 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:46:44,026 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 246 proven. 3 refuted. 0 times theorem prover too weak. 241 trivial. 0 not checked. [2024-09-24 23:46:44,026 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:46:44,192 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 43 proven. 8 refuted. 0 times theorem prover too weak. 439 trivial. 0 not checked. [2024-09-24 23:46:44,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [74922784] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-24 23:46:44,193 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-24 23:46:44,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 16 [2024-09-24 23:46:44,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155943471] [2024-09-24 23:46:44,194 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-24 23:46:44,194 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-09-24 23:46:44,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:46:44,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-09-24 23:46:44,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2024-09-24 23:46:44,196 INFO L87 Difference]: Start difference. First operand 101 states and 123 transitions. Second operand has 16 states, 16 states have (on average 2.625) internal successors, (42), 13 states have internal predecessors, (42), 11 states have call successors, (38), 2 states have call predecessors, (38), 3 states have return successors, (38), 13 states have call predecessors, (38), 11 states have call successors, (38) [2024-09-24 23:46:44,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:46:44,307 INFO L93 Difference]: Finished difference Result 105 states and 126 transitions. [2024-09-24 23:46:44,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-09-24 23:46:44,308 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.625) internal successors, (42), 13 states have internal predecessors, (42), 11 states have call successors, (38), 2 states have call predecessors, (38), 3 states have return successors, (38), 13 states have call predecessors, (38), 11 states have call successors, (38) Word has length 115 [2024-09-24 23:46:44,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:46:44,308 INFO L225 Difference]: With dead ends: 105 [2024-09-24 23:46:44,309 INFO L226 Difference]: Without dead ends: 0 [2024-09-24 23:46:44,310 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 261 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2024-09-24 23:46:44,311 INFO L434 NwaCegarLoop]: 27 mSDtfsCounter, 9 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-24 23:46:44,311 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 176 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-24 23:46:44,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-09-24 23:46:44,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-09-24 23:46:44,312 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) [2024-09-24 23:46:44,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-09-24 23:46:44,312 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 115 [2024-09-24 23:46:44,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:46:44,312 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-09-24 23:46:44,312 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.625) internal successors, (42), 13 states have internal predecessors, (42), 11 states have call successors, (38), 2 states have call predecessors, (38), 3 states have return successors, (38), 13 states have call predecessors, (38), 11 states have call successors, (38) [2024-09-24 23:46:44,313 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:46:44,313 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-09-24 23:46:44,313 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-09-24 23:46:44,315 INFO L785 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-09-24 23:46:44,329 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-09-24 23:46:44,519 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,9 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:46:44,521 INFO L408 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:46:44,525 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-09-24 23:46:45,045 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-09-24 23:46:45,060 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 11:46:45 BoogieIcfgContainer [2024-09-24 23:46:45,060 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-09-24 23:46:45,061 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-09-24 23:46:45,061 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-09-24 23:46:45,061 INFO L274 PluginConnector]: Witness Printer initialized [2024-09-24 23:46:45,061 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 11:46:34" (3/4) ... [2024-09-24 23:46:45,063 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-09-24 23:46:45,111 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.yml [2024-09-24 23:46:45,111 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-09-24 23:46:45,111 INFO L158 Benchmark]: Toolchain (without parser) took 10864.68ms. Allocated memory was 155.2MB in the beginning and 360.7MB in the end (delta: 205.5MB). Free memory was 84.8MB in the beginning and 227.7MB in the end (delta: -142.9MB). Peak memory consumption was 63.6MB. Max. memory is 16.1GB. [2024-09-24 23:46:45,112 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 155.2MB. Free memory was 106.2MB in the beginning and 106.0MB in the end (delta: 159.4kB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-24 23:46:45,112 INFO L158 Benchmark]: CACSL2BoogieTranslator took 235.72ms. Allocated memory is still 155.2MB. Free memory was 84.5MB in the beginning and 72.9MB in the end (delta: 11.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-09-24 23:46:45,112 INFO L158 Benchmark]: Boogie Procedure Inliner took 26.74ms. Allocated memory is still 155.2MB. Free memory was 72.7MB in the beginning and 71.8MB in the end (delta: 895.8kB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-24 23:46:45,112 INFO L158 Benchmark]: Boogie Preprocessor took 79.16ms. Allocated memory is still 155.2MB. Free memory was 71.8MB in the beginning and 124.4MB in the end (delta: -52.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-09-24 23:46:45,113 INFO L158 Benchmark]: RCFGBuilder took 311.55ms. Allocated memory was 155.2MB in the beginning and 241.2MB in the end (delta: 86.0MB). Free memory was 124.4MB in the beginning and 198.7MB in the end (delta: -74.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-09-24 23:46:45,113 INFO L158 Benchmark]: TraceAbstraction took 10155.29ms. Allocated memory was 241.2MB in the beginning and 360.7MB in the end (delta: 119.5MB). Free memory was 198.7MB in the beginning and 230.9MB in the end (delta: -32.1MB). Peak memory consumption was 87.4MB. Max. memory is 16.1GB. [2024-09-24 23:46:45,113 INFO L158 Benchmark]: Witness Printer took 50.25ms. Allocated memory is still 360.7MB. Free memory was 230.9MB in the beginning and 227.7MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-24 23:46:45,114 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 155.2MB. Free memory was 106.2MB in the beginning and 106.0MB in the end (delta: 159.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 235.72ms. Allocated memory is still 155.2MB. Free memory was 84.5MB in the beginning and 72.9MB in the end (delta: 11.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 26.74ms. Allocated memory is still 155.2MB. Free memory was 72.7MB in the beginning and 71.8MB in the end (delta: 895.8kB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 79.16ms. Allocated memory is still 155.2MB. Free memory was 71.8MB in the beginning and 124.4MB in the end (delta: -52.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 311.55ms. Allocated memory was 155.2MB in the beginning and 241.2MB in the end (delta: 86.0MB). Free memory was 124.4MB in the beginning and 198.7MB in the end (delta: -74.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 10155.29ms. Allocated memory was 241.2MB in the beginning and 360.7MB in the end (delta: 119.5MB). Free memory was 198.7MB in the beginning and 230.9MB in the end (delta: -32.1MB). Peak memory consumption was 87.4MB. Max. memory is 16.1GB. * Witness Printer took 50.25ms. Allocated memory is still 360.7MB. Free memory was 230.9MB in the beginning and 227.7MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 17]: 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, 36 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 9.6s, OverallIterations: 12, TraceHistogramMax: 16, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 1.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 187 SdHoareTripleChecker+Valid, 1.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 158 mSDsluCounter, 1925 SdHoareTripleChecker+Invalid, 0.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1465 mSDsCounter, 163 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1013 IncrementalHoareTripleChecker+Invalid, 1176 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 163 mSolverCounterUnsat, 460 mSDtfsCounter, 1013 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1275 GetRequests, 1159 SyntacticMatches, 4 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 343 ImplicationChecksByTransitivity, 1.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=120occurred in iteration=10, InterpolantAutomatonStates: 88, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 12 MinimizatonAttempts, 44 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 5.0s InterpolantComputationTime, 1348 NumberOfCodeBlocks, 1290 NumberOfCodeBlocksAsserted, 23 NumberOfCheckSat, 1503 ConstructedInterpolants, 0 QuantifiedInterpolants, 5858 SizeOfPredicates, 13 NumberOfNonLiveVariables, 1223 ConjunctsInSsa, 140 ConjunctsInUnsatCore, 21 InterpolantComputations, 7 PerfectInterpolantSequences, 4005/4124 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: 46]: Loop Invariant Derived loop invariant: ((((((((B == 1) && (p == 2)) && (r == 1)) && (A == 1)) && (d == 2)) && (q == 0)) || ((((((B == 1) && (r == 0)) && (A == 1)) && (d == 1)) && (q == 1)) && (p == 1))) || ((((d == B) && (A == r)) && (q == 0)) && (p == 1))) - InvariantResult [Line: 36]: Loop Invariant Derived loop invariant: (((((((B == 1) && (p == 2)) && (r == 1)) && (A == 1)) && (d == 2)) && (q == 0)) || ((((((B == 1) && (A == r)) && (A <= 1)) && (d == 1)) && (q == 0)) && (p == 1))) - ProcedureContractResult [Line: 11]: Procedure Contract for assume_abort_if_not Derived contract for procedure assume_abort_if_not. Ensures: (cond != 0) - ProcedureContractResult [Line: 14]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert. Requires: (cond != 0) Ensures: (cond != 0) RESULT: Ultimate proved your program to be correct! [2024-09-24 23:46:45,141 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