./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound2.c --full-output --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --witnessprinter.generate.graphml.witnesses false --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ca4ee3dd Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/certificate-witnesses-artifact/automizer/data/config -Xmx15G -Xms4m -jar /storage/repos/certificate-witnesses-artifact/automizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/certificate-witnesses-artifact/automizer/data -tc /storage/repos/certificate-witnesses-artifact/automizer/config/AutomizerReach.xml -i ../sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound2.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 ebdf8b0d6633d593d56778eaf5218135ab2be92cae14e75cdda2462494f96410 --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --witnessprinter.generate.graphml.witnesses false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.dk.referee-eval-ca4ee3d-m [2024-09-20 19:16:58,051 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-20 19:16:58,132 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-20 19:16:58,137 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-20 19:16:58,138 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-20 19:16:58,182 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-20 19:16:58,182 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-20 19:16:58,183 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-20 19:16:58,185 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-20 19:16:58,186 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-20 19:16:58,186 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-20 19:16:58,186 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-20 19:16:58,187 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-20 19:16:58,187 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-20 19:16:58,187 INFO L153 SettingsManager]: * Use SBE=true [2024-09-20 19:16:58,187 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-20 19:16:58,188 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-20 19:16:58,188 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-20 19:16:58,190 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-20 19:16:58,190 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-20 19:16:58,190 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-20 19:16:58,191 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-20 19:16:58,192 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-20 19:16:58,192 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-20 19:16:58,192 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-20 19:16:58,192 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-20 19:16:58,193 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-20 19:16:58,193 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-20 19:16:58,193 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-20 19:16:58,193 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-20 19:16:58,194 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-20 19:16:58,194 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-20 19:16:58,194 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-20 19:16:58,194 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-20 19:16:58,195 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-20 19:16:58,195 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-20 19:16:58,195 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-20 19:16:58,196 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-20 19:16:58,196 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-20 19:16:58,197 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-20 19:16:58,197 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-20 19:16:58,198 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-20 19:16:58,198 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ebdf8b0d6633d593d56778eaf5218135ab2be92cae14e75cdda2462494f96410 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Generate GraphML witnesses -> false [2024-09-20 19:16:58,453 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-20 19:16:58,476 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-20 19:16:58,479 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-20 19:16:58,480 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-20 19:16:58,481 INFO L274 PluginConnector]: CDTParser initialized [2024-09-20 19:16:58,482 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound2.c [2024-09-20 19:16:59,932 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-20 19:17:00,110 INFO L384 CDTParser]: Found 1 translation units. [2024-09-20 19:17:00,115 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound2.c [2024-09-20 19:17:00,125 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/e299ac4dd/27fbe4d0069a4fc58998a19af59bce30/FLAGae426ab00 [2024-09-20 19:17:00,145 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/e299ac4dd/27fbe4d0069a4fc58998a19af59bce30 [2024-09-20 19:17:00,147 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-20 19:17:00,149 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-20 19:17:00,152 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-20 19:17:00,152 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-20 19:17:00,157 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-20 19:17:00,158 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 07:17:00" (1/1) ... [2024-09-20 19:17:00,159 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5091e92b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:17:00, skipping insertion in model container [2024-09-20 19:17:00,159 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 07:17:00" (1/1) ... [2024-09-20 19:17:00,183 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-20 19:17:00,351 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/egcd2-ll_valuebound2.c[490,503] [2024-09-20 19:17:00,383 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-20 19:17:00,395 INFO L200 MainTranslator]: Completed pre-run [2024-09-20 19:17:00,408 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/egcd2-ll_valuebound2.c[490,503] [2024-09-20 19:17:00,418 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-20 19:17:00,439 INFO L204 MainTranslator]: Completed translation [2024-09-20 19:17:00,440 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:17:00 WrapperNode [2024-09-20 19:17:00,440 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-20 19:17:00,441 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-20 19:17:00,441 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-20 19:17:00,444 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-20 19:17:00,451 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:17:00" (1/1) ... [2024-09-20 19:17:00,461 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:17:00" (1/1) ... [2024-09-20 19:17:00,472 INFO L138 Inliner]: procedures = 14, calls = 19, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-20 19:17:00,474 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-20 19:17:00,475 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-20 19:17:00,475 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-20 19:17:00,475 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-20 19:17:00,490 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:17:00" (1/1) ... [2024-09-20 19:17:00,491 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:17:00" (1/1) ... [2024-09-20 19:17:00,492 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:17:00" (1/1) ... [2024-09-20 19:17:00,505 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-09-20 19:17:00,505 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:17:00" (1/1) ... [2024-09-20 19:17:00,506 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:17:00" (1/1) ... [2024-09-20 19:17:00,509 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:17:00" (1/1) ... [2024-09-20 19:17:00,512 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:17:00" (1/1) ... [2024-09-20 19:17:00,513 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:17:00" (1/1) ... [2024-09-20 19:17:00,517 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:17:00" (1/1) ... [2024-09-20 19:17:00,519 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-20 19:17:00,519 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-20 19:17:00,519 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-20 19:17:00,520 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-20 19:17:00,520 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:17:00" (1/1) ... [2024-09-20 19:17:00,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-20 19:17:00,541 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 19:17:00,555 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-09-20 19:17:00,559 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-09-20 19:17:00,598 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-20 19:17:00,598 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-09-20 19:17:00,598 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-09-20 19:17:00,598 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-20 19:17:00,598 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-20 19:17:00,598 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-20 19:17:00,598 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-20 19:17:00,599 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-20 19:17:00,599 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-20 19:17:00,599 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-20 19:17:00,599 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-20 19:17:00,599 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-20 19:17:00,653 INFO L242 CfgBuilder]: Building ICFG [2024-09-20 19:17:00,655 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-20 19:17:00,827 INFO L? ?]: Removed 10 outVars from TransFormulas that were not future-live. [2024-09-20 19:17:00,828 INFO L291 CfgBuilder]: Performing block encoding [2024-09-20 19:17:00,850 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-20 19:17:00,850 INFO L318 CfgBuilder]: Removed 2 assume(true) statements. [2024-09-20 19:17:00,851 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 07:17:00 BoogieIcfgContainer [2024-09-20 19:17:00,851 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-20 19:17:00,853 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-20 19:17:00,854 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-20 19:17:00,857 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-20 19:17:00,858 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 07:17:00" (1/3) ... [2024-09-20 19:17:00,859 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49cbef8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 07:17:00, skipping insertion in model container [2024-09-20 19:17:00,860 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:17:00" (2/3) ... [2024-09-20 19:17:00,860 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49cbef8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 07:17:00, skipping insertion in model container [2024-09-20 19:17:00,860 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 07:17:00" (3/3) ... [2024-09-20 19:17:00,862 INFO L112 eAbstractionObserver]: Analyzing ICFG egcd2-ll_valuebound2.c [2024-09-20 19:17:00,878 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-20 19:17:00,879 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-20 19:17:00,926 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-20 19:17:00,933 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;@4d0f416a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-20 19:17:00,933 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-20 19:17:00,937 INFO L276 IsEmpty]: Start isEmpty. Operand has 38 states, 18 states have (on average 1.5) internal successors, (27), 20 states have internal predecessors, (27), 14 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2024-09-20 19:17:00,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-09-20 19:17:00,948 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 19:17:00,952 INFO L216 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 19:17:00,953 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 19:17:00,957 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:17:00,957 INFO L85 PathProgramCache]: Analyzing trace with hash -2011850563, now seen corresponding path program 1 times [2024-09-20 19:17:00,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 19:17:00,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787131474] [2024-09-20 19:17:00,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 19:17:00,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 19:17:01,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:17:01,092 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 19:17:01,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:17:01,104 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-20 19:17:01,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:17:01,113 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-20 19:17:01,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:17:01,119 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-20 19:17:01,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:17:01,125 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-20 19:17:01,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:17:01,131 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-20 19:17:01,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:17:01,141 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-20 19:17:01,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:17:01,147 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-20 19:17:01,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 19:17:01,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787131474] [2024-09-20 19:17:01,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787131474] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-20 19:17:01,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-20 19:17:01,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-20 19:17:01,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301000463] [2024-09-20 19:17:01,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-20 19:17:01,156 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-09-20 19:17:01,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 19:17:01,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-09-20 19:17:01,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-20 19:17:01,190 INFO L87 Difference]: Start difference. First operand has 38 states, 18 states have (on average 1.5) internal successors, (27), 20 states have internal predecessors, (27), 14 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) 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, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-09-20 19:17:01,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 19:17:01,224 INFO L93 Difference]: Finished difference Result 70 states and 115 transitions. [2024-09-20 19:17:01,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-20 19:17:01,228 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, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 42 [2024-09-20 19:17:01,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 19:17:01,236 INFO L225 Difference]: With dead ends: 70 [2024-09-20 19:17:01,236 INFO L226 Difference]: Without dead ends: 34 [2024-09-20 19:17:01,240 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-20 19:17:01,244 INFO L434 NwaCegarLoop]: 47 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, 47 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-20 19:17:01,245 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 47 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-20 19:17:01,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2024-09-20 19:17:01,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2024-09-20 19:17:01,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 16 states have (on average 1.1875) internal successors, (19), 18 states have internal predecessors, (19), 14 states have call successors, (14), 4 states have call predecessors, (14), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-09-20 19:17:01,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 45 transitions. [2024-09-20 19:17:01,289 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 45 transitions. Word has length 42 [2024-09-20 19:17:01,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 19:17:01,290 INFO L474 AbstractCegarLoop]: Abstraction has 34 states and 45 transitions. [2024-09-20 19:17:01,290 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, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-09-20 19:17:01,291 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:17:01,291 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 45 transitions. [2024-09-20 19:17:01,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-09-20 19:17:01,293 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 19:17:01,293 INFO L216 NwaCegarLoop]: trace histogram [6, 6, 6, 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] [2024-09-20 19:17:01,294 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-20 19:17:01,294 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 19:17:01,294 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:17:01,295 INFO L85 PathProgramCache]: Analyzing trace with hash -213832741, now seen corresponding path program 1 times [2024-09-20 19:17:01,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 19:17:01,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640638579] [2024-09-20 19:17:01,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 19:17:01,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 19:17:01,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:17:01,577 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 19:17:01,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:17:01,583 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-20 19:17:01,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:17:01,587 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-20 19:17:01,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:17:01,591 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-20 19:17:01,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:17:01,611 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-20 19:17:01,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:17:01,648 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-20 19:17:01,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:17:01,656 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-20 19:17:01,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:17:01,663 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-09-20 19:17:01,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 19:17:01,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640638579] [2024-09-20 19:17:01,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640638579] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 19:17:01,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1597242180] [2024-09-20 19:17:01,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 19:17:01,665 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 19:17:01,666 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 19:17:01,667 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 19:17:01,671 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-20 19:17:01,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:17:01,760 INFO L262 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-09-20 19:17:01,770 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 19:17:02,030 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-09-20 19:17:02,031 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 19:17:02,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1597242180] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 19:17:02,164 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-20 19:17:02,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9] total 11 [2024-09-20 19:17:02,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222228604] [2024-09-20 19:17:02,165 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-20 19:17:02,166 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-09-20 19:17:02,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 19:17:02,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-09-20 19:17:02,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2024-09-20 19:17:02,168 INFO L87 Difference]: Start difference. First operand 34 states and 45 transitions. Second operand has 11 states, 10 states have (on average 2.0) internal successors, (20), 8 states have internal predecessors, (20), 6 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 5 states have call predecessors, (12), 4 states have call successors, (12) [2024-09-20 19:17:02,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 19:17:02,446 INFO L93 Difference]: Finished difference Result 55 states and 72 transitions. [2024-09-20 19:17:02,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-09-20 19:17:02,446 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.0) internal successors, (20), 8 states have internal predecessors, (20), 6 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 5 states have call predecessors, (12), 4 states have call successors, (12) Word has length 43 [2024-09-20 19:17:02,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 19:17:02,448 INFO L225 Difference]: With dead ends: 55 [2024-09-20 19:17:02,448 INFO L226 Difference]: Without dead ends: 47 [2024-09-20 19:17:02,449 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2024-09-20 19:17:02,450 INFO L434 NwaCegarLoop]: 32 mSDtfsCounter, 27 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-20 19:17:02,453 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 233 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-20 19:17:02,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2024-09-20 19:17:02,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 46. [2024-09-20 19:17:02,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 23 states have (on average 1.173913043478261) internal successors, (27), 24 states have internal predecessors, (27), 18 states have call successors, (18), 5 states have call predecessors, (18), 4 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-09-20 19:17:02,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 61 transitions. [2024-09-20 19:17:02,473 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 61 transitions. Word has length 43 [2024-09-20 19:17:02,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 19:17:02,473 INFO L474 AbstractCegarLoop]: Abstraction has 46 states and 61 transitions. [2024-09-20 19:17:02,474 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.0) internal successors, (20), 8 states have internal predecessors, (20), 6 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 5 states have call predecessors, (12), 4 states have call successors, (12) [2024-09-20 19:17:02,474 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:17:02,474 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 61 transitions. [2024-09-20 19:17:02,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-09-20 19:17:02,476 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 19:17:02,476 INFO L216 NwaCegarLoop]: trace histogram [6, 6, 6, 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] [2024-09-20 19:17:02,494 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-09-20 19:17:02,680 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 19:17:02,681 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 19:17:02,681 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:17:02,682 INFO L85 PathProgramCache]: Analyzing trace with hash 1967462229, now seen corresponding path program 1 times [2024-09-20 19:17:02,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 19:17:02,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582083947] [2024-09-20 19:17:02,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 19:17:02,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 19:17:02,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-20 19:17:02,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1091220428] [2024-09-20 19:17:02,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 19:17:02,703 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 19:17:02,703 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 19:17:02,705 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 19:17:02,707 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-20 19:17:02,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:17:02,762 INFO L262 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-09-20 19:17:02,764 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 19:17:02,805 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-20 19:17:02,805 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-20 19:17:02,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 19:17:02,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582083947] [2024-09-20 19:17:02,806 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-20 19:17:02,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1091220428] [2024-09-20 19:17:02,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1091220428] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-20 19:17:02,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-20 19:17:02,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-20 19:17:02,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233262354] [2024-09-20 19:17:02,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-20 19:17:02,808 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-20 19:17:02,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 19:17:02,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-20 19:17:02,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-20 19:17:02,809 INFO L87 Difference]: Start difference. First operand 46 states and 61 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-09-20 19:17:02,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 19:17:02,880 INFO L93 Difference]: Finished difference Result 65 states and 89 transitions. [2024-09-20 19:17:02,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-20 19:17:02,881 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 44 [2024-09-20 19:17:02,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 19:17:02,883 INFO L225 Difference]: With dead ends: 65 [2024-09-20 19:17:02,884 INFO L226 Difference]: Without dead ends: 63 [2024-09-20 19:17:02,885 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-20 19:17:02,886 INFO L434 NwaCegarLoop]: 38 mSDtfsCounter, 4 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-20 19:17:02,887 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 144 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-20 19:17:02,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2024-09-20 19:17:02,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 54. [2024-09-20 19:17:02,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 28 states have (on average 1.1428571428571428) internal successors, (32), 31 states have internal predecessors, (32), 20 states have call successors, (20), 6 states have call predecessors, (20), 5 states have return successors, (18), 16 states have call predecessors, (18), 18 states have call successors, (18) [2024-09-20 19:17:02,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 70 transitions. [2024-09-20 19:17:02,908 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 70 transitions. Word has length 44 [2024-09-20 19:17:02,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 19:17:02,909 INFO L474 AbstractCegarLoop]: Abstraction has 54 states and 70 transitions. [2024-09-20 19:17:02,909 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-09-20 19:17:02,909 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:17:02,910 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 70 transitions. [2024-09-20 19:17:02,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-09-20 19:17:02,912 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 19:17:02,913 INFO L216 NwaCegarLoop]: trace histogram [6, 6, 6, 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, 1, 1, 1, 1] [2024-09-20 19:17:02,933 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-09-20 19:17:03,116 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 19:17:03,117 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 19:17:03,117 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:17:03,118 INFO L85 PathProgramCache]: Analyzing trace with hash -189867411, now seen corresponding path program 1 times [2024-09-20 19:17:03,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 19:17:03,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884567303] [2024-09-20 19:17:03,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 19:17:03,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 19:17:03,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-20 19:17:03,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [338624728] [2024-09-20 19:17:03,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 19:17:03,151 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 19:17:03,151 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 19:17:03,155 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 19:17:03,158 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-20 19:17:03,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:17:03,202 INFO L262 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-09-20 19:17:03,203 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 19:17:03,272 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-20 19:17:03,272 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-20 19:17:03,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 19:17:03,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884567303] [2024-09-20 19:17:03,273 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-20 19:17:03,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [338624728] [2024-09-20 19:17:03,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [338624728] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-20 19:17:03,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-20 19:17:03,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-20 19:17:03,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020107253] [2024-09-20 19:17:03,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-20 19:17:03,276 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-20 19:17:03,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 19:17:03,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-20 19:17:03,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-20 19:17:03,277 INFO L87 Difference]: Start difference. First operand 54 states and 70 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-09-20 19:17:03,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 19:17:03,338 INFO L93 Difference]: Finished difference Result 61 states and 76 transitions. [2024-09-20 19:17:03,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-20 19:17:03,342 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 49 [2024-09-20 19:17:03,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 19:17:03,345 INFO L225 Difference]: With dead ends: 61 [2024-09-20 19:17:03,345 INFO L226 Difference]: Without dead ends: 59 [2024-09-20 19:17:03,346 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-20 19:17:03,348 INFO L434 NwaCegarLoop]: 42 mSDtfsCounter, 5 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-20 19:17:03,349 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 154 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-20 19:17:03,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2024-09-20 19:17:03,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 58. [2024-09-20 19:17:03,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 31 states have (on average 1.1290322580645162) internal successors, (35), 34 states have internal predecessors, (35), 20 states have call successors, (20), 7 states have call predecessors, (20), 6 states have return successors, (18), 16 states have call predecessors, (18), 18 states have call successors, (18) [2024-09-20 19:17:03,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 73 transitions. [2024-09-20 19:17:03,368 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 73 transitions. Word has length 49 [2024-09-20 19:17:03,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 19:17:03,368 INFO L474 AbstractCegarLoop]: Abstraction has 58 states and 73 transitions. [2024-09-20 19:17:03,369 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-09-20 19:17:03,369 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:17:03,369 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 73 transitions. [2024-09-20 19:17:03,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-09-20 19:17:03,370 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 19:17:03,370 INFO L216 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 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] [2024-09-20 19:17:03,387 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-09-20 19:17:03,574 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 19:17:03,575 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 19:17:03,575 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:17:03,576 INFO L85 PathProgramCache]: Analyzing trace with hash -470549715, now seen corresponding path program 1 times [2024-09-20 19:17:03,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 19:17:03,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836195134] [2024-09-20 19:17:03,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 19:17:03,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 19:17:03,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-20 19:17:03,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1520572762] [2024-09-20 19:17:03,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 19:17:03,596 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 19:17:03,596 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 19:17:03,597 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 19:17:03,599 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-20 19:17:03,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:17:03,655 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-09-20 19:17:03,657 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 19:17:03,891 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-09-20 19:17:03,892 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-20 19:17:03,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 19:17:03,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836195134] [2024-09-20 19:17:03,893 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-20 19:17:03,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1520572762] [2024-09-20 19:17:03,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1520572762] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-20 19:17:03,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-20 19:17:03,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-20 19:17:03,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997223386] [2024-09-20 19:17:03,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-20 19:17:03,894 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-20 19:17:03,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 19:17:03,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-20 19:17:03,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-20 19:17:03,895 INFO L87 Difference]: Start difference. First operand 58 states and 73 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 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) [2024-09-20 19:17:03,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 19:17:03,965 INFO L93 Difference]: Finished difference Result 65 states and 79 transitions. [2024-09-20 19:17:03,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-20 19:17:03,966 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 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 59 [2024-09-20 19:17:03,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 19:17:03,967 INFO L225 Difference]: With dead ends: 65 [2024-09-20 19:17:03,967 INFO L226 Difference]: Without dead ends: 63 [2024-09-20 19:17:03,967 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-20 19:17:03,969 INFO L434 NwaCegarLoop]: 39 mSDtfsCounter, 5 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-20 19:17:03,969 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 141 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-20 19:17:03,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2024-09-20 19:17:03,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 62. [2024-09-20 19:17:03,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 34 states have (on average 1.1176470588235294) internal successors, (38), 37 states have internal predecessors, (38), 20 states have call successors, (20), 8 states have call predecessors, (20), 7 states have return successors, (18), 16 states have call predecessors, (18), 18 states have call successors, (18) [2024-09-20 19:17:03,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 76 transitions. [2024-09-20 19:17:03,986 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 76 transitions. Word has length 59 [2024-09-20 19:17:03,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 19:17:03,987 INFO L474 AbstractCegarLoop]: Abstraction has 62 states and 76 transitions. [2024-09-20 19:17:03,987 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 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) [2024-09-20 19:17:03,987 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:17:03,987 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 76 transitions. [2024-09-20 19:17:03,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-09-20 19:17:03,991 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 19:17:03,991 INFO L216 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 19:17:04,010 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-09-20 19:17:04,197 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 19:17:04,198 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 19:17:04,198 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:17:04,198 INFO L85 PathProgramCache]: Analyzing trace with hash 487403380, now seen corresponding path program 1 times [2024-09-20 19:17:04,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 19:17:04,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469179661] [2024-09-20 19:17:04,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 19:17:04,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 19:17:04,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-20 19:17:04,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [717584711] [2024-09-20 19:17:04,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 19:17:04,218 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 19:17:04,218 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 19:17:04,219 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 19:17:04,222 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-09-20 19:17:04,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:17:04,283 INFO L262 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-09-20 19:17:04,286 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 19:17:04,367 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-09-20 19:17:04,367 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 19:17:04,471 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-09-20 19:17:04,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 19:17:04,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469179661] [2024-09-20 19:17:04,471 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-20 19:17:04,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [717584711] [2024-09-20 19:17:04,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [717584711] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 19:17:04,472 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-20 19:17:04,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2024-09-20 19:17:04,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512360191] [2024-09-20 19:17:04,473 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-20 19:17:04,473 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-09-20 19:17:04,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 19:17:04,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-09-20 19:17:04,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-09-20 19:17:04,474 INFO L87 Difference]: Start difference. First operand 62 states and 76 transitions. Second operand has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 6 states have internal predecessors, (20), 4 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-09-20 19:17:04,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 19:17:04,602 INFO L93 Difference]: Finished difference Result 90 states and 121 transitions. [2024-09-20 19:17:04,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-20 19:17:04,603 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 6 states have internal predecessors, (20), 4 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 66 [2024-09-20 19:17:04,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 19:17:04,606 INFO L225 Difference]: With dead ends: 90 [2024-09-20 19:17:04,606 INFO L226 Difference]: Without dead ends: 88 [2024-09-20 19:17:04,607 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 123 SyntacticMatches, 3 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-09-20 19:17:04,607 INFO L434 NwaCegarLoop]: 46 mSDtfsCounter, 6 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 19:17:04,608 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 233 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 19:17:04,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2024-09-20 19:17:04,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 58. [2024-09-20 19:17:04,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 32 states have (on average 1.125) internal successors, (36), 33 states have internal predecessors, (36), 18 states have call successors, (18), 8 states have call predecessors, (18), 7 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-09-20 19:17:04,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 70 transitions. [2024-09-20 19:17:04,629 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 70 transitions. Word has length 66 [2024-09-20 19:17:04,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 19:17:04,630 INFO L474 AbstractCegarLoop]: Abstraction has 58 states and 70 transitions. [2024-09-20 19:17:04,630 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 6 states have internal predecessors, (20), 4 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-09-20 19:17:04,631 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:17:04,631 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 70 transitions. [2024-09-20 19:17:04,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-09-20 19:17:04,635 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 19:17:04,635 INFO L216 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 19:17:04,652 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-09-20 19:17:04,835 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-09-20 19:17:04,836 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 19:17:04,836 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:17:04,836 INFO L85 PathProgramCache]: Analyzing trace with hash -2098403842, now seen corresponding path program 1 times [2024-09-20 19:17:04,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 19:17:04,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890148457] [2024-09-20 19:17:04,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 19:17:04,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 19:17:04,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:17:04,981 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 19:17:04,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:17:04,984 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-20 19:17:04,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:17:04,986 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-20 19:17:04,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:17:04,988 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-20 19:17:04,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:17:05,015 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-20 19:17:05,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:17:05,023 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-20 19:17:05,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:17:05,027 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-20 19:17:05,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:17:05,030 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-20 19:17:05,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:17:05,034 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-20 19:17:05,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:17:05,041 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-20 19:17:05,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:17:05,045 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-20 19:17:05,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:17:05,052 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 14 proven. 11 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2024-09-20 19:17:05,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 19:17:05,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890148457] [2024-09-20 19:17:05,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890148457] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 19:17:05,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [641486215] [2024-09-20 19:17:05,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 19:17:05,056 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 19:17:05,056 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 19:17:05,058 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 19:17:05,059 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-09-20 19:17:05,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:17:05,116 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-09-20 19:17:05,118 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 19:17:05,161 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 14 proven. 11 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2024-09-20 19:17:05,162 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 19:17:05,262 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 14 proven. 11 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2024-09-20 19:17:05,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [641486215] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 19:17:05,262 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 19:17:05,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 9 [2024-09-20 19:17:05,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508298813] [2024-09-20 19:17:05,263 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 19:17:05,264 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-09-20 19:17:05,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 19:17:05,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-09-20 19:17:05,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-09-20 19:17:05,265 INFO L87 Difference]: Start difference. First operand 58 states and 70 transitions. Second operand has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 8 states have internal predecessors, (25), 5 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) [2024-09-20 19:17:05,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 19:17:05,468 INFO L93 Difference]: Finished difference Result 105 states and 145 transitions. [2024-09-20 19:17:05,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-09-20 19:17:05,469 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 8 states have internal predecessors, (25), 5 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) Word has length 68 [2024-09-20 19:17:05,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 19:17:05,470 INFO L225 Difference]: With dead ends: 105 [2024-09-20 19:17:05,470 INFO L226 Difference]: Without dead ends: 97 [2024-09-20 19:17:05,471 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 153 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2024-09-20 19:17:05,472 INFO L434 NwaCegarLoop]: 46 mSDtfsCounter, 32 mSDsluCounter, 265 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 311 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 19:17:05,472 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 311 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 19:17:05,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2024-09-20 19:17:05,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 88. [2024-09-20 19:17:05,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 34 states have call successors, (34), 8 states have call predecessors, (34), 7 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2024-09-20 19:17:05,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 121 transitions. [2024-09-20 19:17:05,502 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 121 transitions. Word has length 68 [2024-09-20 19:17:05,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 19:17:05,502 INFO L474 AbstractCegarLoop]: Abstraction has 88 states and 121 transitions. [2024-09-20 19:17:05,503 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 8 states have internal predecessors, (25), 5 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) [2024-09-20 19:17:05,503 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:17:05,503 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 121 transitions. [2024-09-20 19:17:05,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-09-20 19:17:05,505 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 19:17:05,505 INFO L216 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 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, 1, 1, 1, 1, 1, 1] [2024-09-20 19:17:05,521 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-09-20 19:17:05,709 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 19:17:05,710 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 19:17:05,710 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:17:05,710 INFO L85 PathProgramCache]: Analyzing trace with hash 1520512592, now seen corresponding path program 1 times [2024-09-20 19:17:05,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 19:17:05,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835247665] [2024-09-20 19:17:05,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 19:17:05,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 19:17:05,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-20 19:17:05,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [50144565] [2024-09-20 19:17:05,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 19:17:05,728 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 19:17:05,728 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 19:17:05,730 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 19:17:05,733 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-09-20 19:17:05,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:17:05,794 INFO L262 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-09-20 19:17:05,796 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 19:17:05,927 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 10 proven. 5 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-09-20 19:17:05,928 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 19:17:05,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 19:17:05,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835247665] [2024-09-20 19:17:05,964 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-20 19:17:05,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [50144565] [2024-09-20 19:17:05,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [50144565] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 19:17:05,964 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-09-20 19:17:05,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2024-09-20 19:17:05,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188963816] [2024-09-20 19:17:05,965 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-09-20 19:17:05,965 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-20 19:17:05,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 19:17:05,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-20 19:17:05,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-09-20 19:17:05,966 INFO L87 Difference]: Start difference. First operand 88 states and 121 transitions. Second operand has 6 states, 6 states have (on average 3.5) internal successors, (21), 5 states have internal predecessors, (21), 3 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-09-20 19:17:06,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 19:17:06,091 INFO L93 Difference]: Finished difference Result 123 states and 172 transitions. [2024-09-20 19:17:06,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-20 19:17:06,092 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 5 states have internal predecessors, (21), 3 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 74 [2024-09-20 19:17:06,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 19:17:06,093 INFO L225 Difference]: With dead ends: 123 [2024-09-20 19:17:06,093 INFO L226 Difference]: Without dead ends: 120 [2024-09-20 19:17:06,094 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 71 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-09-20 19:17:06,094 INFO L434 NwaCegarLoop]: 51 mSDtfsCounter, 7 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 19:17:06,095 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 208 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 19:17:06,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2024-09-20 19:17:06,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 117. [2024-09-20 19:17:06,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 61 states have (on average 1.2131147540983607) internal successors, (74), 63 states have internal predecessors, (74), 47 states have call successors, (47), 9 states have call predecessors, (47), 8 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2024-09-20 19:17:06,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 165 transitions. [2024-09-20 19:17:06,131 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 165 transitions. Word has length 74 [2024-09-20 19:17:06,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 19:17:06,132 INFO L474 AbstractCegarLoop]: Abstraction has 117 states and 165 transitions. [2024-09-20 19:17:06,132 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 5 states have internal predecessors, (21), 3 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-09-20 19:17:06,132 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:17:06,132 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 165 transitions. [2024-09-20 19:17:06,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-09-20 19:17:06,133 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 19:17:06,133 INFO L216 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 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, 1, 1, 1, 1] [2024-09-20 19:17:06,149 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-09-20 19:17:06,337 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 19:17:06,338 INFO L399 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 19:17:06,338 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:17:06,339 INFO L85 PathProgramCache]: Analyzing trace with hash 1071513618, now seen corresponding path program 2 times [2024-09-20 19:17:06,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 19:17:06,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485141817] [2024-09-20 19:17:06,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 19:17:06,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 19:17:06,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-20 19:17:06,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1881176131] [2024-09-20 19:17:06,358 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-20 19:17:06,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 19:17:06,359 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 19:17:06,361 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 19:17:06,363 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-09-20 19:17:06,424 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-20 19:17:06,424 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 19:17:06,426 INFO L262 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-09-20 19:17:06,428 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 19:17:06,652 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 14 proven. 19 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2024-09-20 19:17:06,652 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 19:17:06,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 19:17:06,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485141817] [2024-09-20 19:17:06,737 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-20 19:17:06,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1881176131] [2024-09-20 19:17:06,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1881176131] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 19:17:06,737 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-09-20 19:17:06,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2024-09-20 19:17:06,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107495059] [2024-09-20 19:17:06,741 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-09-20 19:17:06,741 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-09-20 19:17:06,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 19:17:06,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-09-20 19:17:06,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-09-20 19:17:06,742 INFO L87 Difference]: Start difference. First operand 117 states and 165 transitions. Second operand has 10 states, 10 states have (on average 2.4) internal successors, (24), 9 states have internal predecessors, (24), 5 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) [2024-09-20 19:17:06,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 19:17:06,926 INFO L93 Difference]: Finished difference Result 129 states and 175 transitions. [2024-09-20 19:17:06,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-09-20 19:17:06,926 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.4) internal successors, (24), 9 states have internal predecessors, (24), 5 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) Word has length 79 [2024-09-20 19:17:06,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 19:17:06,928 INFO L225 Difference]: With dead ends: 129 [2024-09-20 19:17:06,928 INFO L226 Difference]: Without dead ends: 127 [2024-09-20 19:17:06,929 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2024-09-20 19:17:06,929 INFO L434 NwaCegarLoop]: 38 mSDtfsCounter, 12 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 229 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 19:17:06,929 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 229 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 19:17:06,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2024-09-20 19:17:06,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 125. [2024-09-20 19:17:06,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 67 states have (on average 1.1940298507462686) internal successors, (80), 69 states have internal predecessors, (80), 47 states have call successors, (47), 11 states have call predecessors, (47), 10 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2024-09-20 19:17:06,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 171 transitions. [2024-09-20 19:17:06,963 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 171 transitions. Word has length 79 [2024-09-20 19:17:06,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 19:17:06,964 INFO L474 AbstractCegarLoop]: Abstraction has 125 states and 171 transitions. [2024-09-20 19:17:06,964 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.4) internal successors, (24), 9 states have internal predecessors, (24), 5 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) [2024-09-20 19:17:06,965 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:17:06,965 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 171 transitions. [2024-09-20 19:17:06,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-09-20 19:17:06,967 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 19:17:06,967 INFO L216 NwaCegarLoop]: trace histogram [8, 7, 7, 6, 6, 6, 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, 1, 1, 1] [2024-09-20 19:17:06,985 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-09-20 19:17:07,172 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 19:17:07,173 INFO L399 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 19:17:07,173 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:17:07,173 INFO L85 PathProgramCache]: Analyzing trace with hash 807735120, now seen corresponding path program 3 times [2024-09-20 19:17:07,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 19:17:07,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810248607] [2024-09-20 19:17:07,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 19:17:07,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 19:17:07,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-20 19:17:07,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [594973024] [2024-09-20 19:17:07,192 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-20 19:17:07,192 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 19:17:07,192 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 19:17:07,194 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 19:17:07,195 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-09-20 19:17:07,256 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-09-20 19:17:07,257 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 19:17:07,258 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 56 conjuncts are in the unsatisfiable core [2024-09-20 19:17:07,261 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 19:17:08,100 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 48 proven. 27 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2024-09-20 19:17:08,100 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 19:17:19,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 19:17:19,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810248607] [2024-09-20 19:17:19,922 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-20 19:17:19,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [594973024] [2024-09-20 19:17:19,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [594973024] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 19:17:19,922 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-09-20 19:17:19,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2024-09-20 19:17:19,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115851583] [2024-09-20 19:17:19,922 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-09-20 19:17:19,922 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-09-20 19:17:19,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 19:17:19,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-09-20 19:17:19,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=539, Unknown=1, NotChecked=0, Total=650 [2024-09-20 19:17:19,923 INFO L87 Difference]: Start difference. First operand 125 states and 171 transitions. Second operand has 16 states, 15 states have (on average 1.8) internal successors, (27), 14 states have internal predecessors, (27), 5 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 7 states have call predecessors, (14), 5 states have call successors, (14) [2024-09-20 19:17:20,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 19:17:20,357 INFO L93 Difference]: Finished difference Result 133 states and 178 transitions. [2024-09-20 19:17:20,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-09-20 19:17:20,358 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.8) internal successors, (27), 14 states have internal predecessors, (27), 5 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 7 states have call predecessors, (14), 5 states have call successors, (14) Word has length 84 [2024-09-20 19:17:20,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 19:17:20,360 INFO L225 Difference]: With dead ends: 133 [2024-09-20 19:17:20,360 INFO L226 Difference]: Without dead ends: 131 [2024-09-20 19:17:20,360 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=163, Invalid=706, Unknown=1, NotChecked=0, Total=870 [2024-09-20 19:17:20,361 INFO L434 NwaCegarLoop]: 30 mSDtfsCounter, 32 mSDsluCounter, 241 mSDsCounter, 0 mSdLazyCounter, 353 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 271 SdHoareTripleChecker+Invalid, 372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 353 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-20 19:17:20,361 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 271 Invalid, 372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 353 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-20 19:17:20,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2024-09-20 19:17:20,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 129. [2024-09-20 19:17:20,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 70 states have (on average 1.1857142857142857) internal successors, (83), 72 states have internal predecessors, (83), 47 states have call successors, (47), 12 states have call predecessors, (47), 11 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2024-09-20 19:17:20,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 174 transitions. [2024-09-20 19:17:20,398 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 174 transitions. Word has length 84 [2024-09-20 19:17:20,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 19:17:20,399 INFO L474 AbstractCegarLoop]: Abstraction has 129 states and 174 transitions. [2024-09-20 19:17:20,399 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.8) internal successors, (27), 14 states have internal predecessors, (27), 5 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 7 states have call predecessors, (14), 5 states have call successors, (14) [2024-09-20 19:17:20,400 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:17:20,400 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 174 transitions. [2024-09-20 19:17:20,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-09-20 19:17:20,401 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 19:17:20,401 INFO L216 NwaCegarLoop]: trace histogram [9, 8, 8, 6, 6, 6, 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, 1, 1, 1, 1, 1, 1] [2024-09-20 19:17:20,420 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-09-20 19:17:20,605 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-09-20 19:17:20,605 INFO L399 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 19:17:20,606 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:17:20,606 INFO L85 PathProgramCache]: Analyzing trace with hash -607760099, now seen corresponding path program 1 times [2024-09-20 19:17:20,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 19:17:20,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004154375] [2024-09-20 19:17:20,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 19:17:20,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 19:17:20,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-20 19:17:20,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1471752444] [2024-09-20 19:17:20,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 19:17:20,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 19:17:20,627 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 19:17:20,631 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 19:17:20,632 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-09-20 19:17:20,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:17:20,700 INFO L262 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-09-20 19:17:20,702 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 19:17:21,149 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 22 proven. 17 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2024-09-20 19:17:21,150 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 19:17:21,898 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 16 proven. 8 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2024-09-20 19:17:21,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 19:17:21,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004154375] [2024-09-20 19:17:21,899 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-20 19:17:21,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1471752444] [2024-09-20 19:17:21,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1471752444] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 19:17:21,899 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-20 19:17:21,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10] total 21 [2024-09-20 19:17:21,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730210350] [2024-09-20 19:17:21,900 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-20 19:17:21,900 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-09-20 19:17:21,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 19:17:21,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-09-20 19:17:21,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=356, Unknown=0, NotChecked=0, Total=420 [2024-09-20 19:17:21,901 INFO L87 Difference]: Start difference. First operand 129 states and 174 transitions. Second operand has 21 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 18 states have internal predecessors, (37), 10 states have call successors, (29), 3 states have call predecessors, (29), 2 states have return successors, (27), 8 states have call predecessors, (27), 8 states have call successors, (27) [2024-09-20 19:17:24,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 19:17:24,729 INFO L93 Difference]: Finished difference Result 229 states and 337 transitions. [2024-09-20 19:17:24,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-09-20 19:17:24,729 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 18 states have internal predecessors, (37), 10 states have call successors, (29), 3 states have call predecessors, (29), 2 states have return successors, (27), 8 states have call predecessors, (27), 8 states have call successors, (27) Word has length 90 [2024-09-20 19:17:24,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 19:17:24,732 INFO L225 Difference]: With dead ends: 229 [2024-09-20 19:17:24,732 INFO L226 Difference]: Without dead ends: 225 [2024-09-20 19:17:24,733 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=255, Invalid=1151, Unknown=0, NotChecked=0, Total=1406 [2024-09-20 19:17:24,734 INFO L434 NwaCegarLoop]: 48 mSDtfsCounter, 75 mSDsluCounter, 403 mSDsCounter, 0 mSdLazyCounter, 551 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 451 SdHoareTripleChecker+Invalid, 660 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 551 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-09-20 19:17:24,734 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 451 Invalid, 660 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 551 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-09-20 19:17:24,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2024-09-20 19:17:24,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 222. [2024-09-20 19:17:24,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 112 states have (on average 1.2410714285714286) internal successors, (139), 115 states have internal predecessors, (139), 96 states have call successors, (96), 14 states have call predecessors, (96), 13 states have return successors, (93), 92 states have call predecessors, (93), 93 states have call successors, (93) [2024-09-20 19:17:24,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 328 transitions. [2024-09-20 19:17:24,819 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 328 transitions. Word has length 90 [2024-09-20 19:17:24,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 19:17:24,820 INFO L474 AbstractCegarLoop]: Abstraction has 222 states and 328 transitions. [2024-09-20 19:17:24,820 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 18 states have internal predecessors, (37), 10 states have call successors, (29), 3 states have call predecessors, (29), 2 states have return successors, (27), 8 states have call predecessors, (27), 8 states have call successors, (27) [2024-09-20 19:17:24,820 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:17:24,821 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 328 transitions. [2024-09-20 19:17:24,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-09-20 19:17:24,822 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 19:17:24,822 INFO L216 NwaCegarLoop]: trace histogram [10, 9, 9, 6, 6, 6, 3, 3, 3, 3, 3, 3, 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] [2024-09-20 19:17:24,835 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-09-20 19:17:25,025 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-09-20 19:17:25,025 INFO L399 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 19:17:25,025 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:17:25,026 INFO L85 PathProgramCache]: Analyzing trace with hash 1117188045, now seen corresponding path program 4 times [2024-09-20 19:17:25,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 19:17:25,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580645300] [2024-09-20 19:17:25,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 19:17:25,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 19:17:25,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:17:25,118 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 19:17:25,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:17:25,120 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-20 19:17:25,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:17:25,122 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-20 19:17:25,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:17:25,124 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-20 19:17:25,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:17:25,126 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-20 19:17:25,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:17:25,127 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-20 19:17:25,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:17:25,129 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-20 19:17:25,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:17:25,131 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-20 19:17:25,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:17:25,133 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-20 19:17:25,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:17:25,135 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-20 19:17:25,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:17:25,136 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-20 19:17:25,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:17:25,138 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-09-20 19:17:25,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:17:25,142 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-09-20 19:17:25,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:17:25,145 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-20 19:17:25,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:17:25,148 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-09-20 19:17:25,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:17:25,151 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-09-20 19:17:25,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:17:25,153 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2024-09-20 19:17:25,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 19:17:25,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580645300] [2024-09-20 19:17:25,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580645300] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-20 19:17:25,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-20 19:17:25,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-20 19:17:25,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935877160] [2024-09-20 19:17:25,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-20 19:17:25,154 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-20 19:17:25,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 19:17:25,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-20 19:17:25,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-20 19:17:25,155 INFO L87 Difference]: Start difference. First operand 222 states and 328 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-09-20 19:17:25,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 19:17:25,298 INFO L93 Difference]: Finished difference Result 275 states and 404 transitions. [2024-09-20 19:17:25,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-20 19:17:25,299 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 99 [2024-09-20 19:17:25,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 19:17:25,300 INFO L225 Difference]: With dead ends: 275 [2024-09-20 19:17:25,301 INFO L226 Difference]: Without dead ends: 201 [2024-09-20 19:17:25,302 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-09-20 19:17:25,302 INFO L434 NwaCegarLoop]: 52 mSDtfsCounter, 6 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-20 19:17:25,303 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 179 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-20 19:17:25,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2024-09-20 19:17:25,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 189. [2024-09-20 19:17:25,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 95 states have (on average 1.1789473684210525) internal successors, (112), 98 states have internal predecessors, (112), 80 states have call successors, (80), 14 states have call predecessors, (80), 13 states have return successors, (77), 76 states have call predecessors, (77), 77 states have call successors, (77) [2024-09-20 19:17:25,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 269 transitions. [2024-09-20 19:17:25,376 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 269 transitions. Word has length 99 [2024-09-20 19:17:25,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 19:17:25,378 INFO L474 AbstractCegarLoop]: Abstraction has 189 states and 269 transitions. [2024-09-20 19:17:25,379 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-09-20 19:17:25,379 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:17:25,379 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 269 transitions. [2024-09-20 19:17:25,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-09-20 19:17:25,380 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 19:17:25,380 INFO L216 NwaCegarLoop]: trace histogram [12, 11, 11, 6, 6, 6, 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, 1, 1, 1, 1, 1, 1] [2024-09-20 19:17:25,380 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-09-20 19:17:25,380 INFO L399 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 19:17:25,380 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:17:25,381 INFO L85 PathProgramCache]: Analyzing trace with hash 2069519471, now seen corresponding path program 1 times [2024-09-20 19:17:25,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 19:17:25,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988731453] [2024-09-20 19:17:25,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 19:17:25,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 19:17:25,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:17:25,602 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 19:17:25,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:17:25,608 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-20 19:17:25,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:17:25,644 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-20 19:17:25,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:17:25,651 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-20 19:17:25,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:17:25,653 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-20 19:17:25,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:17:25,660 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-20 19:17:25,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:17:25,664 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-20 19:17:25,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:17:25,669 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-20 19:17:25,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:17:25,672 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-20 19:17:25,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:17:25,674 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-20 19:17:25,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:17:25,677 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-20 19:17:25,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:17:25,679 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-20 19:17:25,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:17:25,685 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-20 19:17:25,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:17:25,693 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-09-20 19:17:25,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:17:25,700 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-09-20 19:17:25,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:17:25,705 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-20 19:17:25,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:17:25,707 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-09-20 19:17:25,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:17:25,710 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-09-20 19:17:25,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:17:25,712 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 32 proven. 23 refuted. 0 times theorem prover too weak. 265 trivial. 0 not checked. [2024-09-20 19:17:25,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 19:17:25,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988731453] [2024-09-20 19:17:25,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988731453] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 19:17:25,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2135078215] [2024-09-20 19:17:25,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 19:17:25,713 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 19:17:25,713 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 19:17:25,717 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 19:17:25,720 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-09-20 19:17:25,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:17:25,830 INFO L262 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-09-20 19:17:25,832 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 19:17:25,905 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 122 proven. 23 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2024-09-20 19:17:25,905 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 19:17:26,042 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 32 proven. 23 refuted. 0 times theorem prover too weak. 265 trivial. 0 not checked. [2024-09-20 19:17:26,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2135078215] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 19:17:26,043 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 19:17:26,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 13 [2024-09-20 19:17:26,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132789877] [2024-09-20 19:17:26,043 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 19:17:26,043 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-09-20 19:17:26,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 19:17:26,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-09-20 19:17:26,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-09-20 19:17:26,045 INFO L87 Difference]: Start difference. First operand 189 states and 269 transitions. Second operand has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 states have internal predecessors, (35), 8 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (29), 8 states have call predecessors, (29), 8 states have call successors, (29) [2024-09-20 19:17:26,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 19:17:26,315 INFO L93 Difference]: Finished difference Result 255 states and 363 transitions. [2024-09-20 19:17:26,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-09-20 19:17:26,316 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 states have internal predecessors, (35), 8 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (29), 8 states have call predecessors, (29), 8 states have call successors, (29) Word has length 106 [2024-09-20 19:17:26,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 19:17:26,318 INFO L225 Difference]: With dead ends: 255 [2024-09-20 19:17:26,319 INFO L226 Difference]: Without dead ends: 168 [2024-09-20 19:17:26,320 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 243 SyntacticMatches, 3 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=95, Invalid=325, Unknown=0, NotChecked=0, Total=420 [2024-09-20 19:17:26,322 INFO L434 NwaCegarLoop]: 42 mSDtfsCounter, 31 mSDsluCounter, 261 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 303 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 19:17:26,323 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 303 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 19:17:26,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2024-09-20 19:17:26,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 168. [2024-09-20 19:17:26,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 86 states have (on average 1.1511627906976745) internal successors, (99), 89 states have internal predecessors, (99), 68 states have call successors, (68), 14 states have call predecessors, (68), 13 states have return successors, (65), 64 states have call predecessors, (65), 65 states have call successors, (65) [2024-09-20 19:17:26,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 232 transitions. [2024-09-20 19:17:26,390 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 232 transitions. Word has length 106 [2024-09-20 19:17:26,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 19:17:26,390 INFO L474 AbstractCegarLoop]: Abstraction has 168 states and 232 transitions. [2024-09-20 19:17:26,391 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 states have internal predecessors, (35), 8 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (29), 8 states have call predecessors, (29), 8 states have call successors, (29) [2024-09-20 19:17:26,391 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:17:26,391 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 232 transitions. [2024-09-20 19:17:26,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2024-09-20 19:17:26,392 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 19:17:26,392 INFO L216 NwaCegarLoop]: trace histogram [14, 13, 13, 6, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 19:17:26,408 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-09-20 19:17:26,596 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,12 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 19:17:26,597 INFO L399 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 19:17:26,597 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:17:26,597 INFO L85 PathProgramCache]: Analyzing trace with hash -1527784632, now seen corresponding path program 1 times [2024-09-20 19:17:26,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 19:17:26,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617101850] [2024-09-20 19:17:26,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 19:17:26,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 19:17:26,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:17:26,712 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 19:17:26,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:17:26,714 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-20 19:17:26,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:17:26,715 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-20 19:17:26,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:17:26,717 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-20 19:17:26,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:17:26,718 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-20 19:17:26,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:17:26,720 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-20 19:17:26,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:17:26,721 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-20 19:17:26,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:17:26,723 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-20 19:17:26,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:17:26,724 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-20 19:17:26,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:17:26,726 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-20 19:17:26,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:17:26,727 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-20 19:17:26,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:17:26,729 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-09-20 19:17:26,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:17:26,732 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-09-20 19:17:26,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:17:26,735 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-20 19:17:26,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:17:26,737 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-09-20 19:17:26,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:17:26,740 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-20 19:17:26,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:17:26,742 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-09-20 19:17:26,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:17:26,744 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-09-20 19:17:26,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:17:26,747 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-09-20 19:17:26,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:17:26,750 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-20 19:17:26,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:17:26,752 INFO L134 CoverageAnalysis]: Checked inductivity of 423 backedges. 42 proven. 9 refuted. 0 times theorem prover too weak. 372 trivial. 0 not checked. [2024-09-20 19:17:26,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 19:17:26,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617101850] [2024-09-20 19:17:26,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617101850] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 19:17:26,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [626943923] [2024-09-20 19:17:26,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 19:17:26,753 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 19:17:26,753 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 19:17:26,755 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 19:17:26,757 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-09-20 19:17:26,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:17:26,822 INFO L262 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-09-20 19:17:26,824 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 19:17:26,852 INFO L134 CoverageAnalysis]: Checked inductivity of 423 backedges. 88 proven. 9 refuted. 0 times theorem prover too weak. 326 trivial. 0 not checked. [2024-09-20 19:17:26,853 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 19:17:26,941 INFO L134 CoverageAnalysis]: Checked inductivity of 423 backedges. 42 proven. 9 refuted. 0 times theorem prover too weak. 372 trivial. 0 not checked. [2024-09-20 19:17:26,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [626943923] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 19:17:26,941 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 19:17:26,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 7 [2024-09-20 19:17:26,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022869836] [2024-09-20 19:17:26,942 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 19:17:26,942 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-09-20 19:17:26,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 19:17:26,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-09-20 19:17:26,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-09-20 19:17:26,943 INFO L87 Difference]: Start difference. First operand 168 states and 232 transitions. Second operand has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 states have internal predecessors, (29), 4 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) [2024-09-20 19:17:27,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 19:17:27,155 INFO L93 Difference]: Finished difference Result 194 states and 271 transitions. [2024-09-20 19:17:27,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-09-20 19:17:27,156 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 states have internal predecessors, (29), 4 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) Word has length 120 [2024-09-20 19:17:27,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 19:17:27,158 INFO L225 Difference]: With dead ends: 194 [2024-09-20 19:17:27,158 INFO L226 Difference]: Without dead ends: 182 [2024-09-20 19:17:27,159 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 278 SyntacticMatches, 6 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2024-09-20 19:17:27,159 INFO L434 NwaCegarLoop]: 71 mSDtfsCounter, 17 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 337 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 19:17:27,160 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 337 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 19:17:27,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2024-09-20 19:17:27,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 163. [2024-09-20 19:17:27,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 83 states have (on average 1.144578313253012) internal successors, (95), 85 states have internal predecessors, (95), 67 states have call successors, (67), 13 states have call predecessors, (67), 12 states have return successors, (64), 64 states have call predecessors, (64), 64 states have call successors, (64) [2024-09-20 19:17:27,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 226 transitions. [2024-09-20 19:17:27,227 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 226 transitions. Word has length 120 [2024-09-20 19:17:27,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 19:17:27,228 INFO L474 AbstractCegarLoop]: Abstraction has 163 states and 226 transitions. [2024-09-20 19:17:27,228 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 states have internal predecessors, (29), 4 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) [2024-09-20 19:17:27,228 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:17:27,228 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 226 transitions. [2024-09-20 19:17:27,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-09-20 19:17:27,229 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 19:17:27,230 INFO L216 NwaCegarLoop]: trace histogram [14, 13, 13, 6, 6, 6, 4, 4, 4, 4, 3, 3, 3, 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, 1] [2024-09-20 19:17:27,247 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-09-20 19:17:27,430 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-09-20 19:17:27,430 INFO L399 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 19:17:27,431 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:17:27,431 INFO L85 PathProgramCache]: Analyzing trace with hash -2141824020, now seen corresponding path program 2 times [2024-09-20 19:17:27,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 19:17:27,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201764712] [2024-09-20 19:17:27,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 19:17:27,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 19:17:27,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:17:27,603 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 19:17:27,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:17:27,608 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-20 19:17:27,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:17:27,610 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-20 19:17:27,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:17:27,633 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-20 19:17:27,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:17:27,636 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-20 19:17:27,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:17:27,639 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-20 19:17:27,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:17:27,641 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-20 19:17:27,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:17:27,644 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-20 19:17:27,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:17:27,647 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-20 19:17:27,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:17:27,649 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-20 19:17:27,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:17:27,652 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-20 19:17:27,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:17:27,655 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-09-20 19:17:27,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:17:27,657 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-09-20 19:17:27,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:17:27,660 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-20 19:17:27,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:17:27,663 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-09-20 19:17:27,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:17:27,666 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-20 19:17:27,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:17:27,668 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-09-20 19:17:27,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:17:27,671 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-09-20 19:17:27,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:17:27,673 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-09-20 19:17:27,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:17:27,677 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2024-09-20 19:17:27,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:17:27,679 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 43 proven. 32 refuted. 0 times theorem prover too weak. 357 trivial. 0 not checked. [2024-09-20 19:17:27,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 19:17:27,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201764712] [2024-09-20 19:17:27,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201764712] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 19:17:27,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1107435636] [2024-09-20 19:17:27,680 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-20 19:17:27,680 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 19:17:27,680 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 19:17:27,682 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 19:17:27,683 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-09-20 19:17:27,752 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-20 19:17:27,752 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 19:17:27,754 INFO L262 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-09-20 19:17:27,756 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 19:17:27,876 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 103 proven. 18 refuted. 0 times theorem prover too weak. 311 trivial. 0 not checked. [2024-09-20 19:17:27,877 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 19:17:28,006 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 43 proven. 32 refuted. 0 times theorem prover too weak. 357 trivial. 0 not checked. [2024-09-20 19:17:28,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1107435636] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 19:17:28,006 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 19:17:28,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 16 [2024-09-20 19:17:28,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196637983] [2024-09-20 19:17:28,007 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 19:17:28,007 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-09-20 19:17:28,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 19:17:28,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-09-20 19:17:28,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2024-09-20 19:17:28,008 INFO L87 Difference]: Start difference. First operand 163 states and 226 transitions. Second operand has 16 states, 16 states have (on average 2.75) internal successors, (44), 14 states have internal predecessors, (44), 9 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (32), 9 states have call predecessors, (32), 9 states have call successors, (32) [2024-09-20 19:17:28,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 19:17:28,268 INFO L93 Difference]: Finished difference Result 196 states and 273 transitions. [2024-09-20 19:17:28,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-09-20 19:17:28,268 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.75) internal successors, (44), 14 states have internal predecessors, (44), 9 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (32), 9 states have call predecessors, (32), 9 states have call successors, (32) Word has length 121 [2024-09-20 19:17:28,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 19:17:28,270 INFO L225 Difference]: With dead ends: 196 [2024-09-20 19:17:28,270 INFO L226 Difference]: Without dead ends: 160 [2024-09-20 19:17:28,270 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 271 SyntacticMatches, 5 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=97, Invalid=365, Unknown=0, NotChecked=0, Total=462 [2024-09-20 19:17:28,271 INFO L434 NwaCegarLoop]: 50 mSDtfsCounter, 25 mSDsluCounter, 363 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 413 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 19:17:28,271 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 413 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 19:17:28,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2024-09-20 19:17:28,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 160. [2024-09-20 19:17:28,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 80 states have (on average 1.1125) internal successors, (89), 82 states have internal predecessors, (89), 67 states have call successors, (67), 13 states have call predecessors, (67), 12 states have return successors, (64), 64 states have call predecessors, (64), 64 states have call successors, (64) [2024-09-20 19:17:28,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 220 transitions. [2024-09-20 19:17:28,321 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 220 transitions. Word has length 121 [2024-09-20 19:17:28,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 19:17:28,321 INFO L474 AbstractCegarLoop]: Abstraction has 160 states and 220 transitions. [2024-09-20 19:17:28,322 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.75) internal successors, (44), 14 states have internal predecessors, (44), 9 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (32), 9 states have call predecessors, (32), 9 states have call successors, (32) [2024-09-20 19:17:28,322 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:17:28,322 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 220 transitions. [2024-09-20 19:17:28,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2024-09-20 19:17:28,323 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 19:17:28,323 INFO L216 NwaCegarLoop]: trace histogram [17, 16, 16, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 19:17:28,340 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-09-20 19:17:28,523 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-09-20 19:17:28,524 INFO L399 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 19:17:28,524 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:17:28,524 INFO L85 PathProgramCache]: Analyzing trace with hash -83573063, now seen corresponding path program 2 times [2024-09-20 19:17:28,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 19:17:28,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814207850] [2024-09-20 19:17:28,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 19:17:28,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 19:17:28,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-20 19:17:28,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [820219171] [2024-09-20 19:17:28,548 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-20 19:17:28,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 19:17:28,548 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 19:17:28,550 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 19:17:28,551 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-09-20 19:17:28,630 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-20 19:17:28,630 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 19:17:28,632 INFO L262 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 58 conjuncts are in the unsatisfiable core [2024-09-20 19:17:28,635 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 19:17:29,457 INFO L134 CoverageAnalysis]: Checked inductivity of 615 backedges. 35 proven. 55 refuted. 0 times theorem prover too weak. 525 trivial. 0 not checked. [2024-09-20 19:17:29,457 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 19:17:30,916 INFO L134 CoverageAnalysis]: Checked inductivity of 615 backedges. 32 proven. 43 refuted. 0 times theorem prover too weak. 540 trivial. 0 not checked. [2024-09-20 19:17:30,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 19:17:30,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814207850] [2024-09-20 19:17:30,916 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-20 19:17:30,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [820219171] [2024-09-20 19:17:30,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [820219171] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 19:17:30,916 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-20 19:17:30,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 13] total 26 [2024-09-20 19:17:30,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544378495] [2024-09-20 19:17:30,917 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-20 19:17:30,917 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-09-20 19:17:30,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 19:17:30,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-09-20 19:17:30,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=528, Unknown=0, NotChecked=0, Total=650 [2024-09-20 19:17:30,918 INFO L87 Difference]: Start difference. First operand 160 states and 220 transitions. Second operand has 26 states, 24 states have (on average 2.0416666666666665) internal successors, (49), 24 states have internal predecessors, (49), 14 states have call successors, (46), 2 states have call predecessors, (46), 2 states have return successors, (44), 12 states have call predecessors, (44), 12 states have call successors, (44) [2024-09-20 19:17:33,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 19:17:33,753 INFO L93 Difference]: Finished difference Result 270 states and 385 transitions. [2024-09-20 19:17:33,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-09-20 19:17:33,754 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 24 states have (on average 2.0416666666666665) internal successors, (49), 24 states have internal predecessors, (49), 14 states have call successors, (46), 2 states have call predecessors, (46), 2 states have return successors, (44), 12 states have call predecessors, (44), 12 states have call successors, (44) Word has length 137 [2024-09-20 19:17:33,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 19:17:33,756 INFO L225 Difference]: With dead ends: 270 [2024-09-20 19:17:33,756 INFO L226 Difference]: Without dead ends: 237 [2024-09-20 19:17:33,757 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 301 GetRequests, 247 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 656 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=643, Invalid=2219, Unknown=0, NotChecked=0, Total=2862 [2024-09-20 19:17:33,757 INFO L434 NwaCegarLoop]: 45 mSDtfsCounter, 118 mSDsluCounter, 499 mSDsCounter, 0 mSdLazyCounter, 610 mSolverCounterSat, 182 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 544 SdHoareTripleChecker+Invalid, 792 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 182 IncrementalHoareTripleChecker+Valid, 610 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-09-20 19:17:33,758 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 544 Invalid, 792 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [182 Valid, 610 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-09-20 19:17:33,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2024-09-20 19:17:33,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 227. [2024-09-20 19:17:33,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 115 states have (on average 1.1478260869565218) internal successors, (132), 118 states have internal predecessors, (132), 96 states have call successors, (96), 16 states have call predecessors, (96), 15 states have return successors, (93), 92 states have call predecessors, (93), 93 states have call successors, (93) [2024-09-20 19:17:33,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 321 transitions. [2024-09-20 19:17:33,891 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 321 transitions. Word has length 137 [2024-09-20 19:17:33,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 19:17:33,892 INFO L474 AbstractCegarLoop]: Abstraction has 227 states and 321 transitions. [2024-09-20 19:17:33,892 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 24 states have (on average 2.0416666666666665) internal successors, (49), 24 states have internal predecessors, (49), 14 states have call successors, (46), 2 states have call predecessors, (46), 2 states have return successors, (44), 12 states have call predecessors, (44), 12 states have call successors, (44) [2024-09-20 19:17:33,893 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:17:33,893 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 321 transitions. [2024-09-20 19:17:33,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2024-09-20 19:17:33,895 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 19:17:33,895 INFO L216 NwaCegarLoop]: trace histogram [18, 17, 17, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 19:17:33,912 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-09-20 19:17:34,097 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-09-20 19:17:34,097 INFO L399 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 19:17:34,097 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:17:34,097 INFO L85 PathProgramCache]: Analyzing trace with hash 2038270089, now seen corresponding path program 2 times [2024-09-20 19:17:34,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 19:17:34,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758354086] [2024-09-20 19:17:34,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 19:17:34,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 19:17:34,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-20 19:17:34,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [725788900] [2024-09-20 19:17:34,120 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-20 19:17:34,121 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 19:17:34,121 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 19:17:34,123 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 19:17:34,126 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-09-20 19:17:34,218 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-20 19:17:34,218 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 19:17:34,220 INFO L262 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 56 conjuncts are in the unsatisfiable core [2024-09-20 19:17:34,222 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 19:17:34,753 INFO L134 CoverageAnalysis]: Checked inductivity of 681 backedges. 84 proven. 56 refuted. 0 times theorem prover too weak. 541 trivial. 0 not checked. [2024-09-20 19:17:34,753 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 19:17:35,059 INFO L134 CoverageAnalysis]: Checked inductivity of 681 backedges. 86 proven. 7 refuted. 0 times theorem prover too weak. 588 trivial. 0 not checked. [2024-09-20 19:17:35,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 19:17:35,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758354086] [2024-09-20 19:17:35,060 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-20 19:17:35,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [725788900] [2024-09-20 19:17:35,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [725788900] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 19:17:35,060 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-20 19:17:35,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 9] total 25 [2024-09-20 19:17:35,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508074558] [2024-09-20 19:17:35,060 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-20 19:17:35,061 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-09-20 19:17:35,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 19:17:35,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-09-20 19:17:35,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=515, Unknown=0, NotChecked=0, Total=600 [2024-09-20 19:17:35,062 INFO L87 Difference]: Start difference. First operand 227 states and 321 transitions. Second operand has 25 states, 23 states have (on average 2.1739130434782608) internal successors, (50), 22 states have internal predecessors, (50), 9 states have call successors, (35), 3 states have call predecessors, (35), 3 states have return successors, (34), 10 states have call predecessors, (34), 9 states have call successors, (34) [2024-09-20 19:17:37,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 19:17:37,063 INFO L93 Difference]: Finished difference Result 243 states and 335 transitions. [2024-09-20 19:17:37,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-09-20 19:17:37,064 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 23 states have (on average 2.1739130434782608) internal successors, (50), 22 states have internal predecessors, (50), 9 states have call successors, (35), 3 states have call predecessors, (35), 3 states have return successors, (34), 10 states have call predecessors, (34), 9 states have call successors, (34) Word has length 142 [2024-09-20 19:17:37,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 19:17:37,066 INFO L225 Difference]: With dead ends: 243 [2024-09-20 19:17:37,068 INFO L226 Difference]: Without dead ends: 230 [2024-09-20 19:17:37,069 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 261 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 283 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=260, Invalid=1300, Unknown=0, NotChecked=0, Total=1560 [2024-09-20 19:17:37,069 INFO L434 NwaCegarLoop]: 40 mSDtfsCounter, 68 mSDsluCounter, 407 mSDsCounter, 0 mSdLazyCounter, 588 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 447 SdHoareTripleChecker+Invalid, 700 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 588 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-09-20 19:17:37,069 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 447 Invalid, 700 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 588 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-09-20 19:17:37,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2024-09-20 19:17:37,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 229. [2024-09-20 19:17:37,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 118 states have (on average 1.11864406779661) internal successors, (132), 119 states have internal predecessors, (132), 93 states have call successors, (93), 18 states have call predecessors, (93), 17 states have return successors, (91), 91 states have call predecessors, (91), 91 states have call successors, (91) [2024-09-20 19:17:37,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 316 transitions. [2024-09-20 19:17:37,173 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 316 transitions. Word has length 142 [2024-09-20 19:17:37,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 19:17:37,174 INFO L474 AbstractCegarLoop]: Abstraction has 229 states and 316 transitions. [2024-09-20 19:17:37,174 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 23 states have (on average 2.1739130434782608) internal successors, (50), 22 states have internal predecessors, (50), 9 states have call successors, (35), 3 states have call predecessors, (35), 3 states have return successors, (34), 10 states have call predecessors, (34), 9 states have call successors, (34) [2024-09-20 19:17:37,174 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:17:37,174 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 316 transitions. [2024-09-20 19:17:37,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2024-09-20 19:17:37,176 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 19:17:37,176 INFO L216 NwaCegarLoop]: trace histogram [19, 18, 18, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 19:17:37,193 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-09-20 19:17:37,376 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-09-20 19:17:37,377 INFO L399 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 19:17:37,377 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:17:37,377 INFO L85 PathProgramCache]: Analyzing trace with hash -1721913771, now seen corresponding path program 3 times [2024-09-20 19:17:37,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 19:17:37,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444328502] [2024-09-20 19:17:37,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 19:17:37,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 19:17:37,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:17:37,612 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 19:17:37,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:17:37,614 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-20 19:17:37,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:17:37,634 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-20 19:17:37,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:17:37,639 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-20 19:17:37,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:17:37,641 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-20 19:17:37,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:17:37,643 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-20 19:17:37,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:17:37,650 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-20 19:17:37,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:17:37,653 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-20 19:17:37,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:17:37,656 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-20 19:17:37,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:17:37,660 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-20 19:17:37,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:17:37,663 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-20 19:17:37,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:17:37,667 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-20 19:17:37,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:17:37,670 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-20 19:17:37,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:17:37,673 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-09-20 19:17:37,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:17:37,677 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-09-20 19:17:37,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:17:37,682 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-09-20 19:17:37,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:17:37,687 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-09-20 19:17:37,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:17:37,690 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-09-20 19:17:37,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:17:37,697 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-09-20 19:17:37,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:17:37,701 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-09-20 19:17:37,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:17:37,705 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-20 19:17:37,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:17:37,710 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2024-09-20 19:17:37,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:17:37,714 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-09-20 19:17:37,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:17:37,720 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-09-20 19:17:37,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:17:37,721 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2024-09-20 19:17:37,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:17:37,723 INFO L134 CoverageAnalysis]: Checked inductivity of 762 backedges. 54 proven. 51 refuted. 0 times theorem prover too weak. 657 trivial. 0 not checked. [2024-09-20 19:17:37,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 19:17:37,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444328502] [2024-09-20 19:17:37,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444328502] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 19:17:37,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [441353211] [2024-09-20 19:17:37,724 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-20 19:17:37,725 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 19:17:37,725 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 19:17:37,726 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 19:17:37,728 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-09-20 19:17:37,800 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-09-20 19:17:37,800 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 19:17:37,802 INFO L262 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-09-20 19:17:37,805 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 19:17:38,604 INFO L134 CoverageAnalysis]: Checked inductivity of 762 backedges. 121 proven. 62 refuted. 0 times theorem prover too weak. 579 trivial. 0 not checked. [2024-09-20 19:17:38,604 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 19:17:39,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [441353211] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 19:17:39,565 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-20 19:17:39,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 16] total 21 [2024-09-20 19:17:39,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015826695] [2024-09-20 19:17:39,565 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-20 19:17:39,566 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-09-20 19:17:39,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 19:17:39,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-09-20 19:17:39,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=754, Unknown=0, NotChecked=0, Total=870 [2024-09-20 19:17:39,567 INFO L87 Difference]: Start difference. First operand 229 states and 316 transitions. Second operand has 21 states, 20 states have (on average 2.35) internal successors, (47), 18 states have internal predecessors, (47), 13 states have call successors, (40), 3 states have call predecessors, (40), 3 states have return successors, (37), 11 states have call predecessors, (37), 13 states have call successors, (37) [2024-09-20 19:17:40,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 19:17:40,747 INFO L93 Difference]: Finished difference Result 339 states and 470 transitions. [2024-09-20 19:17:40,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-09-20 19:17:40,747 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 2.35) internal successors, (47), 18 states have internal predecessors, (47), 13 states have call successors, (40), 3 states have call predecessors, (40), 3 states have return successors, (37), 11 states have call predecessors, (37), 13 states have call successors, (37) Word has length 145 [2024-09-20 19:17:40,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 19:17:40,749 INFO L225 Difference]: With dead ends: 339 [2024-09-20 19:17:40,749 INFO L226 Difference]: Without dead ends: 274 [2024-09-20 19:17:40,751 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 217 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 365 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=266, Invalid=1540, Unknown=0, NotChecked=0, Total=1806 [2024-09-20 19:17:40,751 INFO L434 NwaCegarLoop]: 45 mSDtfsCounter, 44 mSDsluCounter, 506 mSDsCounter, 0 mSdLazyCounter, 836 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 551 SdHoareTripleChecker+Invalid, 901 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 836 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-09-20 19:17:40,752 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 551 Invalid, 901 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 836 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-09-20 19:17:40,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2024-09-20 19:17:40,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 259. [2024-09-20 19:17:40,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 133 states have (on average 1.112781954887218) internal successors, (148), 134 states have internal predecessors, (148), 105 states have call successors, (105), 21 states have call predecessors, (105), 20 states have return successors, (103), 103 states have call predecessors, (103), 103 states have call successors, (103) [2024-09-20 19:17:40,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 356 transitions. [2024-09-20 19:17:40,889 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 356 transitions. Word has length 145 [2024-09-20 19:17:40,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 19:17:40,890 INFO L474 AbstractCegarLoop]: Abstraction has 259 states and 356 transitions. [2024-09-20 19:17:40,890 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 2.35) internal successors, (47), 18 states have internal predecessors, (47), 13 states have call successors, (40), 3 states have call predecessors, (40), 3 states have return successors, (37), 11 states have call predecessors, (37), 13 states have call successors, (37) [2024-09-20 19:17:40,890 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:17:40,890 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 356 transitions. [2024-09-20 19:17:40,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2024-09-20 19:17:40,892 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 19:17:40,892 INFO L216 NwaCegarLoop]: trace histogram [21, 20, 20, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 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, 1] [2024-09-20 19:17:40,909 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-09-20 19:17:41,093 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,17 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 19:17:41,093 INFO L399 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 19:17:41,093 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:17:41,094 INFO L85 PathProgramCache]: Analyzing trace with hash -1362351366, now seen corresponding path program 3 times [2024-09-20 19:17:41,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 19:17:41,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577680463] [2024-09-20 19:17:41,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 19:17:41,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 19:17:41,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:17:41,390 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 19:17:41,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:17:41,393 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-20 19:17:41,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:17:41,413 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-20 19:17:41,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:17:41,422 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-20 19:17:41,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:17:41,424 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-20 19:17:41,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:17:41,428 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-20 19:17:41,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:17:41,431 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-20 19:17:41,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:17:41,434 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-20 19:17:41,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:17:41,437 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-20 19:17:41,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:17:41,439 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-20 19:17:41,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:17:41,442 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-20 19:17:41,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:17:41,445 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-20 19:17:41,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:17:41,447 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-20 19:17:41,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:17:41,449 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-09-20 19:17:41,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:17:41,452 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-09-20 19:17:41,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:17:41,454 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-09-20 19:17:41,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:17:41,458 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-09-20 19:17:41,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:17:41,460 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-09-20 19:17:41,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:17:41,463 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-09-20 19:17:41,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:17:41,466 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-09-20 19:17:41,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:17:41,468 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-20 19:17:41,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:17:41,471 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2024-09-20 19:17:41,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:17:41,474 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-09-20 19:17:41,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:17:41,477 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2024-09-20 19:17:41,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:17:41,478 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2024-09-20 19:17:41,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:17:41,480 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2024-09-20 19:17:41,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:17:41,481 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2024-09-20 19:17:41,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:17:41,483 INFO L134 CoverageAnalysis]: Checked inductivity of 922 backedges. 102 proven. 24 refuted. 0 times theorem prover too weak. 796 trivial. 0 not checked. [2024-09-20 19:17:41,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 19:17:41,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577680463] [2024-09-20 19:17:41,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577680463] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 19:17:41,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1963857391] [2024-09-20 19:17:41,483 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-20 19:17:41,484 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 19:17:41,484 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 19:17:41,485 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 19:17:41,487 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-09-20 19:17:41,554 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-09-20 19:17:41,560 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 19:17:41,561 INFO L262 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-09-20 19:17:41,563 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 19:17:42,219 INFO L134 CoverageAnalysis]: Checked inductivity of 922 backedges. 95 proven. 43 refuted. 0 times theorem prover too weak. 784 trivial. 0 not checked. [2024-09-20 19:17:42,219 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 19:17:46,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1963857391] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 19:17:46,971 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-20 19:17:46,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 15] total 22 [2024-09-20 19:17:46,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501872781] [2024-09-20 19:17:46,971 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-20 19:17:46,972 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-09-20 19:17:46,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 19:17:46,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-09-20 19:17:46,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=701, Unknown=1, NotChecked=0, Total=812 [2024-09-20 19:17:46,973 INFO L87 Difference]: Start difference. First operand 259 states and 356 transitions. Second operand has 22 states, 21 states have (on average 2.2857142857142856) internal successors, (48), 19 states have internal predecessors, (48), 14 states have call successors, (43), 3 states have call predecessors, (43), 3 states have return successors, (41), 12 states have call predecessors, (41), 13 states have call successors, (41) [2024-09-20 19:17:47,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 19:17:47,567 INFO L93 Difference]: Finished difference Result 311 states and 415 transitions. [2024-09-20 19:17:47,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-09-20 19:17:47,568 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 2.2857142857142856) internal successors, (48), 19 states have internal predecessors, (48), 14 states have call successors, (43), 3 states have call predecessors, (43), 3 states have return successors, (41), 12 states have call predecessors, (41), 13 states have call successors, (41) Word has length 156 [2024-09-20 19:17:47,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 19:17:47,569 INFO L225 Difference]: With dead ends: 311 [2024-09-20 19:17:47,569 INFO L226 Difference]: Without dead ends: 173 [2024-09-20 19:17:47,570 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 223 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 242 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=214, Invalid=1045, Unknown=1, NotChecked=0, Total=1260 [2024-09-20 19:17:47,570 INFO L434 NwaCegarLoop]: 39 mSDtfsCounter, 45 mSDsluCounter, 474 mSDsCounter, 0 mSdLazyCounter, 549 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 513 SdHoareTripleChecker+Invalid, 592 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 549 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-20 19:17:47,571 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 513 Invalid, 592 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 549 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-20 19:17:47,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2024-09-20 19:17:47,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 173. [2024-09-20 19:17:47,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 92 states have (on average 1.0978260869565217) internal successors, (101), 93 states have internal predecessors, (101), 65 states have call successors, (65), 16 states have call predecessors, (65), 15 states have return successors, (63), 63 states have call predecessors, (63), 63 states have call successors, (63) [2024-09-20 19:17:47,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 229 transitions. [2024-09-20 19:17:47,654 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 229 transitions. Word has length 156 [2024-09-20 19:17:47,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 19:17:47,654 INFO L474 AbstractCegarLoop]: Abstraction has 173 states and 229 transitions. [2024-09-20 19:17:47,654 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 2.2857142857142856) internal successors, (48), 19 states have internal predecessors, (48), 14 states have call successors, (43), 3 states have call predecessors, (43), 3 states have return successors, (41), 12 states have call predecessors, (41), 13 states have call successors, (41) [2024-09-20 19:17:47,654 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:17:47,654 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 229 transitions. [2024-09-20 19:17:47,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2024-09-20 19:17:47,655 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 19:17:47,655 INFO L216 NwaCegarLoop]: trace histogram [23, 22, 22, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 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] [2024-09-20 19:17:47,667 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-09-20 19:17:47,855 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 19:17:47,856 INFO L399 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 19:17:47,856 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:17:47,856 INFO L85 PathProgramCache]: Analyzing trace with hash -593551816, now seen corresponding path program 4 times [2024-09-20 19:17:47,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 19:17:47,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685881796] [2024-09-20 19:17:47,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 19:17:47,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 19:17:47,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:17:48,049 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 19:17:48,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:17:48,051 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-20 19:17:48,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:17:48,054 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-20 19:17:48,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:17:48,079 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-20 19:17:48,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:17:48,081 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-20 19:17:48,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:17:48,083 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-20 19:17:48,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:17:48,085 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-20 19:17:48,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:17:48,088 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-20 19:17:48,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:17:48,090 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-20 19:17:48,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:17:48,091 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-20 19:17:48,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:17:48,095 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-20 19:17:48,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:17:48,097 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-09-20 19:17:48,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:17:48,099 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-09-20 19:17:48,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:17:48,100 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-20 19:17:48,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:17:48,102 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-09-20 19:17:48,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:17:48,104 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-20 19:17:48,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:17:48,107 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-09-20 19:17:48,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:17:48,109 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-09-20 19:17:48,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:17:48,111 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-09-20 19:17:48,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:17:48,113 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-09-20 19:17:48,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:17:48,114 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2024-09-20 19:17:48,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:17:48,116 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2024-09-20 19:17:48,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:17:48,118 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2024-09-20 19:17:48,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:17:48,123 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-09-20 19:17:48,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:17:48,125 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2024-09-20 19:17:48,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:17:48,128 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2024-09-20 19:17:48,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:17:48,129 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2024-09-20 19:17:48,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:17:48,132 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2024-09-20 19:17:48,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:17:48,133 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2024-09-20 19:17:48,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:17:48,135 INFO L134 CoverageAnalysis]: Checked inductivity of 1115 backedges. 72 proven. 74 refuted. 0 times theorem prover too weak. 969 trivial. 0 not checked. [2024-09-20 19:17:48,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 19:17:48,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685881796] [2024-09-20 19:17:48,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685881796] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 19:17:48,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [615515707] [2024-09-20 19:17:48,135 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-20 19:17:48,135 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 19:17:48,136 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 19:17:48,137 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 19:17:48,140 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-09-20 19:17:48,223 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-20 19:17:48,224 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 19:17:48,225 INFO L262 TraceCheckSpWp]: Trace formula consists of 347 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-09-20 19:17:48,228 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 19:17:48,326 INFO L134 CoverageAnalysis]: Checked inductivity of 1115 backedges. 234 proven. 68 refuted. 0 times theorem prover too weak. 813 trivial. 0 not checked. [2024-09-20 19:17:48,327 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 19:17:48,524 INFO L134 CoverageAnalysis]: Checked inductivity of 1115 backedges. 72 proven. 74 refuted. 0 times theorem prover too weak. 969 trivial. 0 not checked. [2024-09-20 19:17:48,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [615515707] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 19:17:48,524 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 19:17:48,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 16 [2024-09-20 19:17:48,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19889769] [2024-09-20 19:17:48,524 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 19:17:48,525 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-09-20 19:17:48,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 19:17:48,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-09-20 19:17:48,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2024-09-20 19:17:48,526 INFO L87 Difference]: Start difference. First operand 173 states and 229 transitions. Second operand has 16 states, 16 states have (on average 3.0) internal successors, (48), 14 states have internal predecessors, (48), 12 states have call successors, (47), 2 states have call predecessors, (47), 3 states have return successors, (46), 12 states have call predecessors, (46), 12 states have call successors, (46) [2024-09-20 19:17:48,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 19:17:48,790 INFO L93 Difference]: Finished difference Result 177 states and 232 transitions. [2024-09-20 19:17:48,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-09-20 19:17:48,791 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.0) internal successors, (48), 14 states have internal predecessors, (48), 12 states have call successors, (47), 2 states have call predecessors, (47), 3 states have return successors, (46), 12 states have call predecessors, (46), 12 states have call successors, (46) Word has length 170 [2024-09-20 19:17:48,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 19:17:48,792 INFO L225 Difference]: With dead ends: 177 [2024-09-20 19:17:48,792 INFO L226 Difference]: Without dead ends: 0 [2024-09-20 19:17:48,793 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 414 GetRequests, 389 SyntacticMatches, 4 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=102, Invalid=404, Unknown=0, NotChecked=0, Total=506 [2024-09-20 19:17:48,795 INFO L434 NwaCegarLoop]: 63 mSDtfsCounter, 22 mSDsluCounter, 478 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 541 SdHoareTripleChecker+Invalid, 268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 19:17:48,796 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 541 Invalid, 268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 240 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 19:17:48,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-09-20 19:17:48,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-09-20 19:17:48,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-20 19:17:48,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-09-20 19:17:48,797 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 170 [2024-09-20 19:17:48,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 19:17:48,797 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-09-20 19:17:48,798 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.0) internal successors, (48), 14 states have internal predecessors, (48), 12 states have call successors, (47), 2 states have call predecessors, (47), 3 states have return successors, (46), 12 states have call predecessors, (46), 12 states have call successors, (46) [2024-09-20 19:17:48,798 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:17:48,798 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-09-20 19:17:48,798 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-09-20 19:17:48,801 INFO L785 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-09-20 19:17:48,818 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-09-20 19:17:49,005 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 19:17:49,009 INFO L408 BasicCegarLoop]: Path program histogram: [4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 19:17:49,010 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-09-20 19:17:53,424 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-09-20 19:17:53,464 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.09 07:17:53 BoogieIcfgContainer [2024-09-20 19:17:53,464 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-09-20 19:17:53,465 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-09-20 19:17:53,465 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-09-20 19:17:53,465 INFO L274 PluginConnector]: Witness Printer initialized [2024-09-20 19:17:53,466 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 07:17:00" (3/4) ... [2024-09-20 19:17:53,467 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-09-20 19:17:53,524 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.yml [2024-09-20 19:17:53,524 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-09-20 19:17:53,525 INFO L158 Benchmark]: Toolchain (without parser) took 53375.42ms. Allocated memory was 176.2MB in the beginning and 293.6MB in the end (delta: 117.4MB). Free memory was 120.4MB in the beginning and 237.3MB in the end (delta: -116.9MB). Peak memory consumption was 3.0MB. Max. memory is 16.1GB. [2024-09-20 19:17:53,525 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 176.2MB. Free memory is still 139.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-20 19:17:53,526 INFO L158 Benchmark]: CACSL2BoogieTranslator took 288.69ms. Allocated memory is still 176.2MB. Free memory was 119.7MB in the beginning and 107.1MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-09-20 19:17:53,526 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.98ms. Allocated memory is still 176.2MB. Free memory was 107.1MB in the beginning and 106.4MB in the end (delta: 730.0kB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-20 19:17:53,526 INFO L158 Benchmark]: Boogie Preprocessor took 43.87ms. Allocated memory is still 176.2MB. Free memory was 106.4MB in the beginning and 104.3MB in the end (delta: 2.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-09-20 19:17:53,530 INFO L158 Benchmark]: RCFGBuilder took 331.62ms. Allocated memory is still 176.2MB. Free memory was 104.3MB in the beginning and 89.6MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-09-20 19:17:53,531 INFO L158 Benchmark]: TraceAbstraction took 52610.59ms. Allocated memory was 176.2MB in the beginning and 293.6MB in the end (delta: 117.4MB). Free memory was 88.9MB in the beginning and 239.4MB in the end (delta: -150.5MB). Peak memory consumption was 123.0MB. Max. memory is 16.1GB. [2024-09-20 19:17:53,531 INFO L158 Benchmark]: Witness Printer took 59.59ms. Allocated memory is still 293.6MB. Free memory was 239.4MB in the beginning and 237.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-20 19:17:53,532 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 176.2MB. Free memory is still 139.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 288.69ms. Allocated memory is still 176.2MB. Free memory was 119.7MB in the beginning and 107.1MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 32.98ms. Allocated memory is still 176.2MB. Free memory was 107.1MB in the beginning and 106.4MB in the end (delta: 730.0kB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 43.87ms. Allocated memory is still 176.2MB. Free memory was 106.4MB in the beginning and 104.3MB in the end (delta: 2.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 331.62ms. Allocated memory is still 176.2MB. Free memory was 104.3MB in the beginning and 89.6MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 52610.59ms. Allocated memory was 176.2MB in the beginning and 293.6MB in the end (delta: 117.4MB). Free memory was 88.9MB in the beginning and 239.4MB in the end (delta: -150.5MB). Peak memory consumption was 123.0MB. Max. memory is 16.1GB. * Witness Printer took 59.59ms. Allocated memory is still 293.6MB. Free memory was 239.4MB in the beginning and 237.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 13]: 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, 38 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 48.1s, OverallIterations: 20, TraceHistogramMax: 23, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 12.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 676 SdHoareTripleChecker+Valid, 6.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 581 mSDsluCounter, 6250 SdHoareTripleChecker+Invalid, 5.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 5346 mSDsCounter, 702 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4957 IncrementalHoareTripleChecker+Invalid, 5659 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 702 mSolverCounterUnsat, 904 mSDtfsCounter, 4957 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3482 GetRequests, 3081 SyntacticMatches, 31 SemanticMatches, 370 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2136 ImplicationChecksByTransitivity, 18.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=259occurred in iteration=18, InterpolantAutomatonStates: 258, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.0s AutomataMinimizationTime, 20 MinimizatonAttempts, 118 StatesRemovedByMinimization, 15 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 29.0s InterpolantComputationTime, 3647 NumberOfCodeBlocks, 3463 NumberOfCodeBlocksAsserted, 50 NumberOfCheckSat, 3806 ConstructedInterpolants, 0 QuantifiedInterpolants, 13359 SizeOfPredicates, 52 NumberOfNonLiveVariables, 3793 ConjunctsInSsa, 460 ConjunctsInUnsatCore, 37 InterpolantComputations, 5 PerfectInterpolantSequences, 13865/14731 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: 47]: Loop Invariant Derived loop invariant: ((((((((((((((((((r == 0) && (s == 1)) && (a == ((__int128) c + b))) && (0 <= c)) && (b == y)) && (k == 1)) && (yy == ((long long) y * y))) && (q == 0)) && (1 <= y)) && (xy == ((long long) y * x))) && (a == x)) && (x <= 2)) && (p == 1)) || ((((((((((((((r == 0) && (a == (c + ((__int128) b * k)))) && (s == 1)) && (1 <= a)) && (0 <= c)) && (yy == ((long long) y * y))) && ((c + ((__int128) b * 2)) <= 2)) && (q == 0)) && (1 <= b)) && (xy == ((long long) y * x))) && (a == x)) && (x == (c + ((__int128) k * y)))) && (x <= 2)) && (p == 1))) || ((((((((((((((r == 0) && (y <= 2)) && (k == 0)) && (s == 1)) && (1 <= a)) && (b == y)) && (yy == ((long long) y * y))) && (q == 0)) && (1 <= y)) && (xy == ((long long) y * x))) && (a == x)) && (c == x)) && (x <= 2)) && (p == 1))) || ((((((((((((y == 2) && (b == 1)) && (s == 0)) && (p == 0)) && (k == 0)) && (2 == xy)) && (r == 1)) && (c == 2)) && (x == 1)) && (yy == 4)) && (a == 2)) && (q == 1))) || ((((((((((((y == 2) && (b == 1)) && (s == 0)) && (p == 0)) && (2 == xy)) && (r == 1)) && (x == 1)) && (yy == 4)) && (k == 1)) && (a == 2)) && (q == 1)) && (c == 1))) || ((((((((((((y == 2) && (b == 1)) && (s == 0)) && (p == 0)) && (2 == xy)) && (r == 1)) && (x == 1)) && (yy == 4)) && (k == 2)) && (a == 2)) && (c == 0)) && (q == 1))) - InvariantResult [Line: 41]: Loop Invariant Derived loop invariant: (((((((((((((b == 1) && (s == 0)) && (p == 0)) && (y == xy)) && (r == 1)) && (a == y)) && (x == 1)) && (yy == ((long long) y * y))) && (a == 2)) && (q == 1)) || (((((((((1 <= x) && (y <= 2)) && (b == 0)) && (p == 0)) && (r == 1)) && (a == y)) && (1 <= y)) && ((((__int128) q * x) + ((__int128) y * s)) == 0)) && (x <= 2))) || ((((((((((((r == 0) && (y <= 2)) && (s == 1)) && (1 <= a)) && (b == y)) && (yy == ((long long) y * y))) && (q == 0)) && (1 <= y)) && (xy == ((long long) y * x))) && (a == x)) && (x <= 2)) && (p == 1))) || (((((((((((long long) x + 1) <= y) && (r == 0)) && (((__int128) ((long long) x * 2) + b) == y)) && (y <= 2)) && (s == 1)) && (((__int128) q + 2) == 0)) && (((__int128) b + 1) <= x)) && (a == x)) && (p == 1))) - ProcedureContractResult [Line: 7]: Procedure Contract for assume_abort_if_not Derived contract for procedure assume_abort_if_not. Ensures: (\old(cond) != 0) - ProcedureContractResult [Line: 10]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert. Requires: (1 <= \old(cond)) Ensures: (1 <= \old(cond)) RESULT: Ultimate proved your program to be correct! [2024-09-20 19:17:53,574 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE