./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound1.c --full-output --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --witnessprinter.generate.graphml.witnesses false --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 27b49876 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_valuebound1.c -s /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/certificate-witnesses-artifact/automizer --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9439004819e2e34c2ab2e87057bca89732394fc53eb02ecb90192bb8fac7667a --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-27b4987-m [2024-09-21 11:54:48,262 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-21 11:54:48,309 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-21 11:54:48,312 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-21 11:54:48,312 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-21 11:54:48,325 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-21 11:54:48,325 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-21 11:54:48,326 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-21 11:54:48,326 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-21 11:54:48,326 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-21 11:54:48,326 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-21 11:54:48,327 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-21 11:54:48,327 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-21 11:54:48,327 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-21 11:54:48,328 INFO L153 SettingsManager]: * Use SBE=true [2024-09-21 11:54:48,328 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-21 11:54:48,328 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-21 11:54:48,328 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-21 11:54:48,329 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-21 11:54:48,329 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-21 11:54:48,329 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-21 11:54:48,329 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-21 11:54:48,330 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-21 11:54:48,330 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-21 11:54:48,330 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-21 11:54:48,330 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-21 11:54:48,331 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-21 11:54:48,331 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-21 11:54:48,331 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-21 11:54:48,331 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-21 11:54:48,331 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-21 11:54:48,332 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-21 11:54:48,332 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-21 11:54:48,332 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-21 11:54:48,332 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-21 11:54:48,333 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-21 11:54:48,333 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-21 11:54:48,333 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-21 11:54:48,333 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-21 11:54:48,333 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-21 11:54:48,333 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-21 11:54:48,334 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-21 11:54:48,334 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9439004819e2e34c2ab2e87057bca89732394fc53eb02ecb90192bb8fac7667a Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Generate GraphML witnesses -> false [2024-09-21 11:54:48,525 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-21 11:54:48,546 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-21 11:54:48,549 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-21 11:54:48,551 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-21 11:54:48,551 INFO L274 PluginConnector]: CDTParser initialized [2024-09-21 11:54:48,552 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound1.c [2024-09-21 11:54:49,779 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-21 11:54:49,920 INFO L384 CDTParser]: Found 1 translation units. [2024-09-21 11:54:49,921 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound1.c [2024-09-21 11:54:49,929 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/c74a11743/ee1d928741204d20bb95aff7e9d9c170/FLAGf05212c61 [2024-09-21 11:54:49,940 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/c74a11743/ee1d928741204d20bb95aff7e9d9c170 [2024-09-21 11:54:49,942 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-21 11:54:49,943 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-21 11:54:49,944 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-21 11:54:49,944 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-21 11:54:49,963 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-21 11:54:49,964 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 11:54:49" (1/1) ... [2024-09-21 11:54:49,964 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e2aa8f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:54:49, skipping insertion in model container [2024-09-21 11:54:49,965 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 11:54:49" (1/1) ... [2024-09-21 11:54:49,980 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-21 11:54:50,109 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_valuebound1.c[490,503] [2024-09-21 11:54:50,133 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-21 11:54:50,140 INFO L200 MainTranslator]: Completed pre-run [2024-09-21 11:54:50,149 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_valuebound1.c[490,503] [2024-09-21 11:54:50,157 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-21 11:54:50,171 INFO L204 MainTranslator]: Completed translation [2024-09-21 11:54:50,171 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:54:50 WrapperNode [2024-09-21 11:54:50,171 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-21 11:54:50,172 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-21 11:54:50,173 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-21 11:54:50,173 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-21 11:54:50,177 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:54:50" (1/1) ... [2024-09-21 11:54:50,182 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:54:50" (1/1) ... [2024-09-21 11:54:50,186 INFO L138 Inliner]: procedures = 14, calls = 19, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-21 11:54:50,186 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-21 11:54:50,187 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-21 11:54:50,187 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-21 11:54:50,187 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-21 11:54:50,194 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:54:50" (1/1) ... [2024-09-21 11:54:50,194 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:54:50" (1/1) ... [2024-09-21 11:54:50,196 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:54:50" (1/1) ... [2024-09-21 11:54:50,208 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]. [2024-09-21 11:54:50,208 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:54:50" (1/1) ... [2024-09-21 11:54:50,208 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:54:50" (1/1) ... [2024-09-21 11:54:50,210 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:54:50" (1/1) ... [2024-09-21 11:54:50,216 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:54:50" (1/1) ... [2024-09-21 11:54:50,217 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:54:50" (1/1) ... [2024-09-21 11:54:50,218 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:54:50" (1/1) ... [2024-09-21 11:54:50,219 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-21 11:54:50,223 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-21 11:54:50,223 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-21 11:54:50,223 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-21 11:54:50,224 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:54:50" (1/1) ... [2024-09-21 11:54:50,228 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-21 11:54:50,235 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 11:54:50,246 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) [2024-09-21 11:54:50,249 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 [2024-09-21 11:54:50,285 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-21 11:54:50,285 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-09-21 11:54:50,285 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-09-21 11:54:50,286 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-21 11:54:50,286 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-21 11:54:50,286 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-21 11:54:50,286 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-21 11:54:50,287 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-21 11:54:50,287 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-21 11:54:50,288 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-21 11:54:50,288 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-21 11:54:50,288 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-21 11:54:50,337 INFO L242 CfgBuilder]: Building ICFG [2024-09-21 11:54:50,339 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-21 11:54:50,478 INFO L? ?]: Removed 10 outVars from TransFormulas that were not future-live. [2024-09-21 11:54:50,478 INFO L291 CfgBuilder]: Performing block encoding [2024-09-21 11:54:50,501 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-21 11:54:50,501 INFO L318 CfgBuilder]: Removed 2 assume(true) statements. [2024-09-21 11:54:50,502 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 11:54:50 BoogieIcfgContainer [2024-09-21 11:54:50,502 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-21 11:54:50,503 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-21 11:54:50,503 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-21 11:54:50,506 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-21 11:54:50,507 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 11:54:49" (1/3) ... [2024-09-21 11:54:50,507 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1935c8cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 11:54:50, skipping insertion in model container [2024-09-21 11:54:50,507 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:54:50" (2/3) ... [2024-09-21 11:54:50,508 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1935c8cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 11:54:50, skipping insertion in model container [2024-09-21 11:54:50,508 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 11:54:50" (3/3) ... [2024-09-21 11:54:50,509 INFO L112 eAbstractionObserver]: Analyzing ICFG egcd2-ll_valuebound1.c [2024-09-21 11:54:50,521 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-21 11:54:50,521 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-21 11:54:50,572 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-21 11:54:50,580 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;@54431742, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-21 11:54:50,581 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-21 11:54:50,584 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) [2024-09-21 11:54:50,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-09-21 11:54:50,593 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 11:54:50,594 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] [2024-09-21 11:54:50,594 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 11:54:50,598 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:54:50,599 INFO L85 PathProgramCache]: Analyzing trace with hash -2011850563, now seen corresponding path program 1 times [2024-09-21 11:54:50,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 11:54:50,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528929042] [2024-09-21 11:54:50,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:54:50,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 11:54:50,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:54:50,731 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 11:54:50,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:54:50,750 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-21 11:54:50,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:54:50,758 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-21 11:54:50,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:54:50,767 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-21 11:54:50,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:54:50,772 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-21 11:54:50,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:54:50,775 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-21 11:54:50,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:54:50,779 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-21 11:54:50,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:54:50,783 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-21 11:54:50,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 11:54:50,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528929042] [2024-09-21 11:54:50,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528929042] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-21 11:54:50,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-21 11:54:50,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-21 11:54:50,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181965260] [2024-09-21 11:54:50,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-21 11:54:50,789 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-09-21 11:54:50,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 11:54:50,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-09-21 11:54:50,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-21 11:54:50,811 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) [2024-09-21 11:54:50,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 11:54:50,836 INFO L93 Difference]: Finished difference Result 70 states and 115 transitions. [2024-09-21 11:54:50,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-21 11:54:50,838 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 [2024-09-21 11:54:50,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 11:54:50,844 INFO L225 Difference]: With dead ends: 70 [2024-09-21 11:54:50,845 INFO L226 Difference]: Without dead ends: 34 [2024-09-21 11:54:50,848 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 [2024-09-21 11:54:50,852 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 [2024-09-21 11:54:50,853 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] [2024-09-21 11:54:50,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2024-09-21 11:54:50,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2024-09-21 11:54:50,885 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) [2024-09-21 11:54:50,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 45 transitions. [2024-09-21 11:54:50,891 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 45 transitions. Word has length 42 [2024-09-21 11:54:50,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 11:54:50,892 INFO L474 AbstractCegarLoop]: Abstraction has 34 states and 45 transitions. [2024-09-21 11:54:50,892 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) [2024-09-21 11:54:50,892 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:54:50,892 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 45 transitions. [2024-09-21 11:54:50,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-09-21 11:54:50,894 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 11:54:50,894 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] [2024-09-21 11:54:50,894 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-21 11:54:50,895 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 11:54:50,895 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:54:50,895 INFO L85 PathProgramCache]: Analyzing trace with hash -213832741, now seen corresponding path program 1 times [2024-09-21 11:54:50,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 11:54:50,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333816935] [2024-09-21 11:54:50,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:54:50,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 11:54:50,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:54:51,089 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 11:54:51,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:54:51,097 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-21 11:54:51,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:54:51,102 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-21 11:54:51,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:54:51,110 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-21 11:54:51,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:54:51,113 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-21 11:54:51,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:54:51,143 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-21 11:54:51,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:54:51,154 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-21 11:54:51,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:54:51,163 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-09-21 11:54:51,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 11:54:51,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333816935] [2024-09-21 11:54:51,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333816935] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 11:54:51,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [99387390] [2024-09-21 11:54:51,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:54:51,164 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 11:54:51,164 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 11:54:51,165 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) [2024-09-21 11:54:51,167 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-21 11:54:51,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:54:51,225 INFO L262 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-09-21 11:54:51,230 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 11:54:51,425 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-09-21 11:54:51,425 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 11:54:51,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [99387390] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 11:54:51,549 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-21 11:54:51,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9] total 11 [2024-09-21 11:54:51,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808833583] [2024-09-21 11:54:51,549 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-21 11:54:51,550 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-09-21 11:54:51,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 11:54:51,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-09-21 11:54:51,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2024-09-21 11:54:51,551 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) [2024-09-21 11:54:51,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 11:54:51,757 INFO L93 Difference]: Finished difference Result 55 states and 72 transitions. [2024-09-21 11:54:51,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-09-21 11:54:51,758 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 [2024-09-21 11:54:51,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 11:54:51,759 INFO L225 Difference]: With dead ends: 55 [2024-09-21 11:54:51,760 INFO L226 Difference]: Without dead ends: 47 [2024-09-21 11:54:51,760 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 [2024-09-21 11:54:51,761 INFO L434 NwaCegarLoop]: 32 mSDtfsCounter, 27 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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, 0.1s IncrementalHoareTripleChecker+Time [2024-09-21 11:54:51,763 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 233 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-21 11:54:51,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2024-09-21 11:54:51,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 46. [2024-09-21 11:54:51,779 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) [2024-09-21 11:54:51,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 61 transitions. [2024-09-21 11:54:51,784 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 61 transitions. Word has length 43 [2024-09-21 11:54:51,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 11:54:51,784 INFO L474 AbstractCegarLoop]: Abstraction has 46 states and 61 transitions. [2024-09-21 11:54:51,784 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) [2024-09-21 11:54:51,784 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:54:51,784 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 61 transitions. [2024-09-21 11:54:51,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-09-21 11:54:51,785 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 11:54:51,785 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] [2024-09-21 11:54:51,799 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-09-21 11:54:51,986 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 [2024-09-21 11:54:51,986 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 11:54:51,986 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:54:51,987 INFO L85 PathProgramCache]: Analyzing trace with hash 1967462229, now seen corresponding path program 1 times [2024-09-21 11:54:51,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 11:54:51,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128658979] [2024-09-21 11:54:51,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:54:51,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 11:54:51,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-21 11:54:52,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [874097044] [2024-09-21 11:54:52,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:54:52,001 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 11:54:52,001 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 11:54:52,002 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) [2024-09-21 11:54:52,003 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-21 11:54:52,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:54:52,040 INFO L262 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-09-21 11:54:52,042 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 11:54:52,067 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-21 11:54:52,067 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-21 11:54:52,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 11:54:52,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128658979] [2024-09-21 11:54:52,068 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-21 11:54:52,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [874097044] [2024-09-21 11:54:52,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [874097044] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-21 11:54:52,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-21 11:54:52,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-21 11:54:52,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677428315] [2024-09-21 11:54:52,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-21 11:54:52,069 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-21 11:54:52,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 11:54:52,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-21 11:54:52,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-21 11:54:52,070 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) [2024-09-21 11:54:52,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 11:54:52,112 INFO L93 Difference]: Finished difference Result 65 states and 89 transitions. [2024-09-21 11:54:52,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-21 11:54:52,112 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 [2024-09-21 11:54:52,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 11:54:52,113 INFO L225 Difference]: With dead ends: 65 [2024-09-21 11:54:52,114 INFO L226 Difference]: Without dead ends: 63 [2024-09-21 11:54:52,114 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 [2024-09-21 11:54:52,116 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 [2024-09-21 11:54:52,117 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] [2024-09-21 11:54:52,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2024-09-21 11:54:52,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 54. [2024-09-21 11:54:52,129 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) [2024-09-21 11:54:52,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 70 transitions. [2024-09-21 11:54:52,130 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 70 transitions. Word has length 44 [2024-09-21 11:54:52,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 11:54:52,132 INFO L474 AbstractCegarLoop]: Abstraction has 54 states and 70 transitions. [2024-09-21 11:54:52,132 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) [2024-09-21 11:54:52,132 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:54:52,132 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 70 transitions. [2024-09-21 11:54:52,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-09-21 11:54:52,134 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 11:54:52,134 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] [2024-09-21 11:54:52,146 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-09-21 11:54:52,338 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 [2024-09-21 11:54:52,340 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 11:54:52,340 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:54:52,341 INFO L85 PathProgramCache]: Analyzing trace with hash -189867411, now seen corresponding path program 1 times [2024-09-21 11:54:52,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 11:54:52,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886095217] [2024-09-21 11:54:52,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:54:52,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 11:54:52,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-21 11:54:52,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1619723657] [2024-09-21 11:54:52,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:54:52,362 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 11:54:52,363 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 11:54:52,364 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) [2024-09-21 11:54:52,366 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-21 11:54:52,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:54:52,417 INFO L262 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-09-21 11:54:52,418 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 11:54:52,489 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-21 11:54:52,490 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-21 11:54:52,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 11:54:52,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886095217] [2024-09-21 11:54:52,490 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-21 11:54:52,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1619723657] [2024-09-21 11:54:52,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1619723657] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-21 11:54:52,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-21 11:54:52,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-21 11:54:52,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331386008] [2024-09-21 11:54:52,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-21 11:54:52,492 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-21 11:54:52,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 11:54:52,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-21 11:54:52,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-21 11:54:52,493 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) [2024-09-21 11:54:52,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 11:54:52,536 INFO L93 Difference]: Finished difference Result 61 states and 76 transitions. [2024-09-21 11:54:52,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-21 11:54:52,537 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 [2024-09-21 11:54:52,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 11:54:52,538 INFO L225 Difference]: With dead ends: 61 [2024-09-21 11:54:52,539 INFO L226 Difference]: Without dead ends: 59 [2024-09-21 11:54:52,539 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 [2024-09-21 11:54:52,539 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 [2024-09-21 11:54:52,540 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] [2024-09-21 11:54:52,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2024-09-21 11:54:52,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 58. [2024-09-21 11:54:52,553 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) [2024-09-21 11:54:52,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 73 transitions. [2024-09-21 11:54:52,556 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 73 transitions. Word has length 49 [2024-09-21 11:54:52,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 11:54:52,557 INFO L474 AbstractCegarLoop]: Abstraction has 58 states and 73 transitions. [2024-09-21 11:54:52,557 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) [2024-09-21 11:54:52,557 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:54:52,557 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 73 transitions. [2024-09-21 11:54:52,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-09-21 11:54:52,558 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 11:54:52,558 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] [2024-09-21 11:54:52,572 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-09-21 11:54:52,758 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 [2024-09-21 11:54:52,759 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 11:54:52,759 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:54:52,759 INFO L85 PathProgramCache]: Analyzing trace with hash -470549715, now seen corresponding path program 1 times [2024-09-21 11:54:52,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 11:54:52,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581779003] [2024-09-21 11:54:52,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:54:52,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 11:54:52,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-21 11:54:52,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1298024837] [2024-09-21 11:54:52,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:54:52,785 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 11:54:52,785 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 11:54:52,787 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) [2024-09-21 11:54:52,787 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-21 11:54:52,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:54:52,837 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-09-21 11:54:52,839 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 11:54:52,978 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 15 proven. 15 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-09-21 11:54:52,978 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 11:54:53,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 11:54:53,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581779003] [2024-09-21 11:54:53,080 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-21 11:54:53,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1298024837] [2024-09-21 11:54:53,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1298024837] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 11:54:53,080 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-09-21 11:54:53,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2024-09-21 11:54:53,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338534285] [2024-09-21 11:54:53,081 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-09-21 11:54:53,081 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-09-21 11:54:53,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 11:54:53,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-09-21 11:54:53,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-09-21 11:54:53,082 INFO L87 Difference]: Start difference. First operand 58 states and 73 transitions. Second operand has 9 states, 8 states have (on average 2.375) internal successors, (19), 6 states have internal predecessors, (19), 3 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2024-09-21 11:54:53,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 11:54:53,188 INFO L93 Difference]: Finished difference Result 67 states and 81 transitions. [2024-09-21 11:54:53,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-09-21 11:54:53,189 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.375) internal successors, (19), 6 states have internal predecessors, (19), 3 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) Word has length 59 [2024-09-21 11:54:53,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 11:54:53,190 INFO L225 Difference]: With dead ends: 67 [2024-09-21 11:54:53,191 INFO L226 Difference]: Without dead ends: 65 [2024-09-21 11:54:53,191 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 53 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-09-21 11:54:53,192 INFO L434 NwaCegarLoop]: 35 mSDtfsCounter, 22 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-21 11:54:53,192 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 201 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-21 11:54:53,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2024-09-21 11:54:53,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 62. [2024-09-21 11:54:53,203 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) [2024-09-21 11:54:53,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 76 transitions. [2024-09-21 11:54:53,204 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 76 transitions. Word has length 59 [2024-09-21 11:54:53,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 11:54:53,204 INFO L474 AbstractCegarLoop]: Abstraction has 62 states and 76 transitions. [2024-09-21 11:54:53,204 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.375) internal successors, (19), 6 states have internal predecessors, (19), 3 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2024-09-21 11:54:53,205 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:54:53,205 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 76 transitions. [2024-09-21 11:54:53,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-09-21 11:54:53,206 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 11:54:53,206 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] [2024-09-21 11:54:53,218 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-09-21 11:54:53,406 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 [2024-09-21 11:54:53,406 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 11:54:53,407 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:54:53,407 INFO L85 PathProgramCache]: Analyzing trace with hash 487403380, now seen corresponding path program 1 times [2024-09-21 11:54:53,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 11:54:53,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184694042] [2024-09-21 11:54:53,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:54:53,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 11:54:53,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-21 11:54:53,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [920181662] [2024-09-21 11:54:53,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:54:53,424 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 11:54:53,424 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 11:54:53,427 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) [2024-09-21 11:54:53,429 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-09-21 11:54:53,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:54:53,480 INFO L262 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-09-21 11:54:53,482 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 11:54:53,627 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 17 proven. 17 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-21 11:54:53,627 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 11:54:53,715 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2024-09-21 11:54:53,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 11:54:53,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184694042] [2024-09-21 11:54:53,715 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-21 11:54:53,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [920181662] [2024-09-21 11:54:53,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [920181662] provided 1 perfect and 1 imperfect interpolant sequences [2024-09-21 11:54:53,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-21 11:54:53,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 12 [2024-09-21 11:54:53,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743077781] [2024-09-21 11:54:53,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-21 11:54:53,716 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-21 11:54:53,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 11:54:53,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-21 11:54:53,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-09-21 11:54:53,717 INFO L87 Difference]: Start difference. First operand 62 states and 76 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-09-21 11:54:53,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 11:54:53,763 INFO L93 Difference]: Finished difference Result 68 states and 81 transitions. [2024-09-21 11:54:53,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-21 11:54:53,764 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 66 [2024-09-21 11:54:53,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 11:54:53,765 INFO L225 Difference]: With dead ends: 68 [2024-09-21 11:54:53,765 INFO L226 Difference]: Without dead ends: 66 [2024-09-21 11:54:53,765 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 119 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-09-21 11:54:53,765 INFO L434 NwaCegarLoop]: 38 mSDtfsCounter, 4 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-21 11:54:53,766 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 138 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-21 11:54:53,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2024-09-21 11:54:53,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 58. [2024-09-21 11:54:53,774 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) [2024-09-21 11:54:53,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 70 transitions. [2024-09-21 11:54:53,774 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 70 transitions. Word has length 66 [2024-09-21 11:54:53,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 11:54:53,774 INFO L474 AbstractCegarLoop]: Abstraction has 58 states and 70 transitions. [2024-09-21 11:54:53,775 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-09-21 11:54:53,775 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:54:53,775 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 70 transitions. [2024-09-21 11:54:53,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-09-21 11:54:53,775 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 11:54:53,776 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] [2024-09-21 11:54:53,789 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-09-21 11:54:53,979 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 [2024-09-21 11:54:53,980 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 11:54:53,980 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:54:53,980 INFO L85 PathProgramCache]: Analyzing trace with hash -2098403842, now seen corresponding path program 1 times [2024-09-21 11:54:53,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 11:54:53,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973005397] [2024-09-21 11:54:53,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:54:53,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 11:54:53,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:54:54,090 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 11:54:54,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:54:54,092 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-21 11:54:54,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:54:54,093 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-21 11:54:54,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:54:54,095 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-21 11:54:54,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:54:54,115 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-21 11:54:54,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:54:54,118 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-21 11:54:54,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:54:54,120 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-21 11:54:54,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:54:54,122 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-21 11:54:54,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:54:54,125 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-21 11:54:54,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:54:54,127 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-21 11:54:54,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:54:54,129 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-21 11:54:54,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:54:54,134 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 14 proven. 11 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2024-09-21 11:54:54,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 11:54:54,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973005397] [2024-09-21 11:54:54,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973005397] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 11:54:54,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [263942717] [2024-09-21 11:54:54,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:54:54,135 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 11:54:54,135 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 11:54:54,139 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) [2024-09-21 11:54:54,140 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-09-21 11:54:54,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:54:54,183 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-09-21 11:54:54,184 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 11:54:54,496 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 8 proven. 26 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-21 11:54:54,496 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 11:54:54,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [263942717] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 11:54:54,652 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-21 11:54:54,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 13] total 17 [2024-09-21 11:54:54,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012028229] [2024-09-21 11:54:54,653 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-21 11:54:54,653 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-09-21 11:54:54,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 11:54:54,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-09-21 11:54:54,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=434, Unknown=0, NotChecked=0, Total=506 [2024-09-21 11:54:54,654 INFO L87 Difference]: Start difference. First operand 58 states and 70 transitions. Second operand has 17 states, 16 states have (on average 2.125) internal successors, (34), 14 states have internal predecessors, (34), 10 states have call successors, (23), 3 states have call predecessors, (23), 2 states have return successors, (21), 8 states have call predecessors, (21), 8 states have call successors, (21) [2024-09-21 11:54:54,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 11:54:54,908 INFO L93 Difference]: Finished difference Result 90 states and 111 transitions. [2024-09-21 11:54:54,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-09-21 11:54:54,908 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.125) internal successors, (34), 14 states have internal predecessors, (34), 10 states have call successors, (23), 3 states have call predecessors, (23), 2 states have return successors, (21), 8 states have call predecessors, (21), 8 states have call successors, (21) Word has length 68 [2024-09-21 11:54:54,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 11:54:54,909 INFO L225 Difference]: With dead ends: 90 [2024-09-21 11:54:54,909 INFO L226 Difference]: Without dead ends: 69 [2024-09-21 11:54:54,910 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=104, Invalid=598, Unknown=0, NotChecked=0, Total=702 [2024-09-21 11:54:54,910 INFO L434 NwaCegarLoop]: 29 mSDtfsCounter, 43 mSDsluCounter, 310 mSDsCounter, 0 mSdLazyCounter, 245 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 339 SdHoareTripleChecker+Invalid, 287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-21 11:54:54,911 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 339 Invalid, 287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 245 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-21 11:54:54,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2024-09-21 11:54:54,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 68. [2024-09-21 11:54:54,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 37 states have (on average 1.1081081081081081) internal successors, (41), 38 states have internal predecessors, (41), 22 states have call successors, (22), 9 states have call predecessors, (22), 8 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-09-21 11:54:54,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 83 transitions. [2024-09-21 11:54:54,927 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 83 transitions. Word has length 68 [2024-09-21 11:54:54,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 11:54:54,927 INFO L474 AbstractCegarLoop]: Abstraction has 68 states and 83 transitions. [2024-09-21 11:54:54,927 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 2.125) internal successors, (34), 14 states have internal predecessors, (34), 10 states have call successors, (23), 3 states have call predecessors, (23), 2 states have return successors, (21), 8 states have call predecessors, (21), 8 states have call successors, (21) [2024-09-21 11:54:54,927 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:54:54,927 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 83 transitions. [2024-09-21 11:54:54,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-09-21 11:54:54,931 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 11:54:54,932 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] [2024-09-21 11:54:54,944 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-09-21 11:54:55,132 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 [2024-09-21 11:54:55,132 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 11:54:55,132 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:54:55,133 INFO L85 PathProgramCache]: Analyzing trace with hash -607760099, now seen corresponding path program 1 times [2024-09-21 11:54:55,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 11:54:55,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220787034] [2024-09-21 11:54:55,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:54:55,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 11:54:55,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-21 11:54:55,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1746290315] [2024-09-21 11:54:55,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:54:55,157 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 11:54:55,157 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 11:54:55,158 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) [2024-09-21 11:54:55,159 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-09-21 11:54:55,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:54:55,205 INFO L262 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-09-21 11:54:55,207 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 11:54:55,730 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 22 proven. 26 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2024-09-21 11:54:55,730 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 11:54:56,634 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 19 proven. 20 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2024-09-21 11:54:56,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 11:54:56,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220787034] [2024-09-21 11:54:56,634 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-21 11:54:56,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1746290315] [2024-09-21 11:54:56,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1746290315] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 11:54:56,634 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-21 11:54:56,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 25 [2024-09-21 11:54:56,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127587496] [2024-09-21 11:54:56,634 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-21 11:54:56,635 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-09-21 11:54:56,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 11:54:56,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-09-21 11:54:56,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=502, Unknown=0, NotChecked=0, Total=600 [2024-09-21 11:54:56,636 INFO L87 Difference]: Start difference. First operand 68 states and 83 transitions. Second operand has 25 states, 21 states have (on average 1.8571428571428572) internal successors, (39), 19 states have internal predecessors, (39), 13 states have call successors, (30), 3 states have call predecessors, (30), 2 states have return successors, (28), 11 states have call predecessors, (28), 11 states have call successors, (28) [2024-09-21 11:55:01,910 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-21 11:55:02,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 11:55:02,328 INFO L93 Difference]: Finished difference Result 159 states and 233 transitions. [2024-09-21 11:55:02,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-09-21 11:55:02,329 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 21 states have (on average 1.8571428571428572) internal successors, (39), 19 states have internal predecessors, (39), 13 states have call successors, (30), 3 states have call predecessors, (30), 2 states have return successors, (28), 11 states have call predecessors, (28), 11 states have call successors, (28) Word has length 90 [2024-09-21 11:55:02,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 11:55:02,331 INFO L225 Difference]: With dead ends: 159 [2024-09-21 11:55:02,331 INFO L226 Difference]: Without dead ends: 157 [2024-09-21 11:55:02,332 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 395 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=446, Invalid=1716, Unknown=0, NotChecked=0, Total=2162 [2024-09-21 11:55:02,335 INFO L434 NwaCegarLoop]: 53 mSDtfsCounter, 150 mSDsluCounter, 579 mSDsCounter, 0 mSdLazyCounter, 512 mSolverCounterSat, 170 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 632 SdHoareTripleChecker+Invalid, 683 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 170 IncrementalHoareTripleChecker+Valid, 512 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2024-09-21 11:55:02,335 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 632 Invalid, 683 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [170 Valid, 512 Invalid, 1 Unknown, 0 Unchecked, 4.8s Time] [2024-09-21 11:55:02,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2024-09-21 11:55:02,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 121. [2024-09-21 11:55:02,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 60 states have (on average 1.2166666666666666) internal successors, (73), 62 states have internal predecessors, (73), 51 states have call successors, (51), 10 states have call predecessors, (51), 9 states have return successors, (49), 48 states have call predecessors, (49), 49 states have call successors, (49) [2024-09-21 11:55:02,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 173 transitions. [2024-09-21 11:55:02,394 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 173 transitions. Word has length 90 [2024-09-21 11:55:02,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 11:55:02,395 INFO L474 AbstractCegarLoop]: Abstraction has 121 states and 173 transitions. [2024-09-21 11:55:02,395 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 21 states have (on average 1.8571428571428572) internal successors, (39), 19 states have internal predecessors, (39), 13 states have call successors, (30), 3 states have call predecessors, (30), 2 states have return successors, (28), 11 states have call predecessors, (28), 11 states have call successors, (28) [2024-09-21 11:55:02,395 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:55:02,395 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 173 transitions. [2024-09-21 11:55:02,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-09-21 11:55:02,396 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 11:55:02,397 INFO L216 NwaCegarLoop]: trace histogram [10, 9, 9, 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, 1, 1] [2024-09-21 11:55:02,408 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-09-21 11:55:02,597 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 [2024-09-21 11:55:02,597 INFO L399 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 11:55:02,598 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:55:02,598 INFO L85 PathProgramCache]: Analyzing trace with hash 281468069, now seen corresponding path program 1 times [2024-09-21 11:55:02,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 11:55:02,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290498957] [2024-09-21 11:55:02,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:55:02,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 11:55:02,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-21 11:55:02,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1870933768] [2024-09-21 11:55:02,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:55:02,616 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 11:55:02,616 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 11:55:02,619 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) [2024-09-21 11:55:02,620 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-09-21 11:55:02,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:55:02,667 INFO L262 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-09-21 11:55:02,670 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 11:55:03,039 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 24 proven. 26 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-09-21 11:55:03,039 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 11:55:03,329 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 18 proven. 8 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2024-09-21 11:55:03,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 11:55:03,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290498957] [2024-09-21 11:55:03,330 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-21 11:55:03,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1870933768] [2024-09-21 11:55:03,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1870933768] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 11:55:03,330 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-21 11:55:03,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 10] total 22 [2024-09-21 11:55:03,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365428787] [2024-09-21 11:55:03,331 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-21 11:55:03,331 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-09-21 11:55:03,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 11:55:03,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-09-21 11:55:03,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=380, Unknown=0, NotChecked=0, Total=462 [2024-09-21 11:55:03,332 INFO L87 Difference]: Start difference. First operand 121 states and 173 transitions. Second operand has 22 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 18 states have internal predecessors, (37), 11 states have call successors, (32), 3 states have call predecessors, (32), 2 states have return successors, (30), 11 states have call predecessors, (30), 11 states have call successors, (30) [2024-09-21 11:55:04,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 11:55:04,299 INFO L93 Difference]: Finished difference Result 244 states and 378 transitions. [2024-09-21 11:55:04,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-09-21 11:55:04,300 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 18 states have internal predecessors, (37), 11 states have call successors, (32), 3 states have call predecessors, (32), 2 states have return successors, (30), 11 states have call predecessors, (30), 11 states have call successors, (30) Word has length 95 [2024-09-21 11:55:04,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 11:55:04,302 INFO L225 Difference]: With dead ends: 244 [2024-09-21 11:55:04,303 INFO L226 Difference]: Without dead ends: 238 [2024-09-21 11:55:04,304 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=269, Invalid=991, Unknown=0, NotChecked=0, Total=1260 [2024-09-21 11:55:04,304 INFO L434 NwaCegarLoop]: 39 mSDtfsCounter, 108 mSDsluCounter, 412 mSDsCounter, 0 mSdLazyCounter, 426 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 451 SdHoareTripleChecker+Invalid, 549 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 426 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-09-21 11:55:04,305 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 451 Invalid, 549 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 426 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-09-21 11:55:04,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2024-09-21 11:55:04,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 189. [2024-09-21 11:55:04,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 94 states have (on average 1.2446808510638299) internal successors, (117), 97 states have internal predecessors, (117), 84 states have call successors, (84), 11 states have call predecessors, (84), 10 states have return successors, (81), 80 states have call predecessors, (81), 81 states have call successors, (81) [2024-09-21 11:55:04,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 282 transitions. [2024-09-21 11:55:04,374 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 282 transitions. Word has length 95 [2024-09-21 11:55:04,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 11:55:04,376 INFO L474 AbstractCegarLoop]: Abstraction has 189 states and 282 transitions. [2024-09-21 11:55:04,376 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 18 states have internal predecessors, (37), 11 states have call successors, (32), 3 states have call predecessors, (32), 2 states have return successors, (30), 11 states have call predecessors, (30), 11 states have call successors, (30) [2024-09-21 11:55:04,376 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:55:04,376 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 282 transitions. [2024-09-21 11:55:04,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-09-21 11:55:04,377 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 11:55:04,377 INFO L216 NwaCegarLoop]: trace histogram [11, 10, 10, 6, 6, 6, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 11:55:04,390 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-09-21 11:55:04,577 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 [2024-09-21 11:55:04,578 INFO L399 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 11:55:04,578 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:55:04,578 INFO L85 PathProgramCache]: Analyzing trace with hash 1141291923, now seen corresponding path program 1 times [2024-09-21 11:55:04,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 11:55:04,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099624304] [2024-09-21 11:55:04,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:55:04,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 11:55:04,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:55:04,723 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 11:55:04,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:55:04,725 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-21 11:55:04,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:55:04,726 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-21 11:55:04,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:55:04,741 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-21 11:55:04,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:55:04,743 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-21 11:55:04,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:55:04,745 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-21 11:55:04,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:55:04,747 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-21 11:55:04,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:55:04,748 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-21 11:55:04,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:55:04,750 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-21 11:55:04,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:55:04,752 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-21 11:55:04,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:55:04,754 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-21 11:55:04,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:55:04,756 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-21 11:55:04,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:55:04,759 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-21 11:55:04,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:55:04,761 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-09-21 11:55:04,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:55:04,764 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-09-21 11:55:04,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:55:04,768 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-21 11:55:04,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:55:04,770 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-09-21 11:55:04,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:55:04,771 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 39 proven. 12 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2024-09-21 11:55:04,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 11:55:04,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099624304] [2024-09-21 11:55:04,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099624304] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 11:55:04,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1605785703] [2024-09-21 11:55:04,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:55:04,772 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 11:55:04,772 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 11:55:04,773 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) [2024-09-21 11:55:04,774 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-09-21 11:55:04,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:55:04,826 INFO L262 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-09-21 11:55:04,828 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 11:55:04,893 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 99 proven. 12 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2024-09-21 11:55:04,893 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 11:55:04,990 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 33 proven. 18 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2024-09-21 11:55:04,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1605785703] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 11:55:04,991 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-21 11:55:04,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 12 [2024-09-21 11:55:04,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676954960] [2024-09-21 11:55:04,991 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-21 11:55:04,991 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-09-21 11:55:04,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 11:55:04,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-09-21 11:55:04,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-09-21 11:55:04,992 INFO L87 Difference]: Start difference. First operand 189 states and 282 transitions. Second operand has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 10 states have internal predecessors, (34), 7 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (26), 7 states have call predecessors, (26), 7 states have call successors, (26) [2024-09-21 11:55:05,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 11:55:05,138 INFO L93 Difference]: Finished difference Result 200 states and 291 transitions. [2024-09-21 11:55:05,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-09-21 11:55:05,138 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 10 states have internal predecessors, (34), 7 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (26), 7 states have call predecessors, (26), 7 states have call successors, (26) Word has length 101 [2024-09-21 11:55:05,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 11:55:05,139 INFO L225 Difference]: With dead ends: 200 [2024-09-21 11:55:05,139 INFO L226 Difference]: Without dead ends: 71 [2024-09-21 11:55:05,140 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 232 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2024-09-21 11:55:05,141 INFO L434 NwaCegarLoop]: 39 mSDtfsCounter, 9 mSDsluCounter, 260 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 299 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-21 11:55:05,141 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 299 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-21 11:55:05,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2024-09-21 11:55:05,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2024-09-21 11:55:05,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 38 states have (on average 1.0263157894736843) internal successors, (39), 38 states have internal predecessors, (39), 25 states have call successors, (25), 9 states have call predecessors, (25), 7 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2024-09-21 11:55:05,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 87 transitions. [2024-09-21 11:55:05,158 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 87 transitions. Word has length 101 [2024-09-21 11:55:05,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 11:55:05,158 INFO L474 AbstractCegarLoop]: Abstraction has 71 states and 87 transitions. [2024-09-21 11:55:05,158 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 10 states have internal predecessors, (34), 7 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (26), 7 states have call predecessors, (26), 7 states have call successors, (26) [2024-09-21 11:55:05,159 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:55:05,159 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 87 transitions. [2024-09-21 11:55:05,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2024-09-21 11:55:05,160 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 11:55:05,160 INFO L216 NwaCegarLoop]: trace histogram [17, 16, 16, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 11:55:05,173 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-09-21 11:55:05,361 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 [2024-09-21 11:55:05,361 INFO L399 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 11:55:05,362 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:55:05,362 INFO L85 PathProgramCache]: Analyzing trace with hash -183794789, now seen corresponding path program 2 times [2024-09-21 11:55:05,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 11:55:05,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176155158] [2024-09-21 11:55:05,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:55:05,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 11:55:05,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:55:05,512 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 11:55:05,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:55:05,515 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-21 11:55:05,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:55:05,532 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-21 11:55:05,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:55:05,536 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-21 11:55:05,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:55:05,538 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-21 11:55:05,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:55:05,540 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-21 11:55:05,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:55:05,543 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-21 11:55:05,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:55:05,545 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-21 11:55:05,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:55:05,547 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-21 11:55:05,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:55:05,549 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-21 11:55:05,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:55:05,551 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-21 11:55:05,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:55:05,553 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-21 11:55:05,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:55:05,555 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-21 11:55:05,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:55:05,571 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-09-21 11:55:05,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:55:05,573 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-09-21 11:55:05,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:55:05,577 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-09-21 11:55:05,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:55:05,580 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-09-21 11:55:05,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:55:05,584 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-09-21 11:55:05,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:55:05,586 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-09-21 11:55:05,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:55:05,588 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-09-21 11:55:05,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:55:05,590 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-21 11:55:05,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:55:05,593 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2024-09-21 11:55:05,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:55:05,595 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-09-21 11:55:05,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:55:05,598 INFO L134 CoverageAnalysis]: Checked inductivity of 610 backedges. 34 proven. 51 refuted. 0 times theorem prover too weak. 525 trivial. 0 not checked. [2024-09-21 11:55:05,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 11:55:05,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176155158] [2024-09-21 11:55:05,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176155158] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 11:55:05,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [256233801] [2024-09-21 11:55:05,599 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-21 11:55:05,599 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 11:55:05,599 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 11:55:05,600 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) [2024-09-21 11:55:05,602 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-09-21 11:55:05,656 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-21 11:55:05,657 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-21 11:55:05,658 INFO L262 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-09-21 11:55:05,659 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 11:55:05,740 INFO L134 CoverageAnalysis]: Checked inductivity of 610 backedges. 34 proven. 51 refuted. 0 times theorem prover too weak. 525 trivial. 0 not checked. [2024-09-21 11:55:05,741 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 11:55:05,892 INFO L134 CoverageAnalysis]: Checked inductivity of 610 backedges. 34 proven. 51 refuted. 0 times theorem prover too weak. 525 trivial. 0 not checked. [2024-09-21 11:55:05,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [256233801] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 11:55:05,892 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-21 11:55:05,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 18 [2024-09-21 11:55:05,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792183812] [2024-09-21 11:55:05,892 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-21 11:55:05,893 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-09-21 11:55:05,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 11:55:05,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-09-21 11:55:05,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2024-09-21 11:55:05,894 INFO L87 Difference]: Start difference. First operand 71 states and 87 transitions. Second operand has 18 states, 18 states have (on average 2.5555555555555554) internal successors, (46), 18 states have internal predecessors, (46), 15 states have call successors, (49), 2 states have call predecessors, (49), 2 states have return successors, (49), 14 states have call predecessors, (49), 14 states have call successors, (49) [2024-09-21 11:55:06,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 11:55:06,055 INFO L93 Difference]: Finished difference Result 71 states and 87 transitions. [2024-09-21 11:55:06,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-09-21 11:55:06,055 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.5555555555555554) internal successors, (46), 18 states have internal predecessors, (46), 15 states have call successors, (49), 2 states have call predecessors, (49), 2 states have return successors, (49), 14 states have call predecessors, (49), 14 states have call successors, (49) Word has length 134 [2024-09-21 11:55:06,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 11:55:06,056 INFO L225 Difference]: With dead ends: 71 [2024-09-21 11:55:06,056 INFO L226 Difference]: Without dead ends: 0 [2024-09-21 11:55:06,056 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 327 GetRequests, 306 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=103, Invalid=403, Unknown=0, NotChecked=0, Total=506 [2024-09-21 11:55:06,057 INFO L434 NwaCegarLoop]: 44 mSDtfsCounter, 20 mSDsluCounter, 394 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 438 SdHoareTripleChecker+Invalid, 246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-21 11:55:06,057 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 438 Invalid, 246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-21 11:55:06,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-09-21 11:55:06,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-09-21 11:55:06,057 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) [2024-09-21 11:55:06,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-09-21 11:55:06,058 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 134 [2024-09-21 11:55:06,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 11:55:06,058 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-09-21 11:55:06,058 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.5555555555555554) internal successors, (46), 18 states have internal predecessors, (46), 15 states have call successors, (49), 2 states have call predecessors, (49), 2 states have return successors, (49), 14 states have call predecessors, (49), 14 states have call successors, (49) [2024-09-21 11:55:06,058 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:55:06,058 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-09-21 11:55:06,058 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-09-21 11:55:06,060 INFO L785 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-09-21 11:55:06,072 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-09-21 11:55:06,264 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 [2024-09-21 11:55:06,267 INFO L408 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 11:55:06,268 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-09-21 11:55:06,983 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-09-21 11:55:06,998 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 11:55:06 BoogieIcfgContainer [2024-09-21 11:55:06,998 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-09-21 11:55:06,998 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-09-21 11:55:06,998 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-09-21 11:55:06,999 INFO L274 PluginConnector]: Witness Printer initialized [2024-09-21 11:55:06,999 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 11:54:50" (3/4) ... [2024-09-21 11:55:07,000 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-09-21 11:55:07,039 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.yml [2024-09-21 11:55:07,039 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-09-21 11:55:07,039 INFO L158 Benchmark]: Toolchain (without parser) took 17096.05ms. Allocated memory was 155.2MB in the beginning and 186.6MB in the end (delta: 31.5MB). Free memory was 87.8MB in the beginning and 144.3MB in the end (delta: -56.5MB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-21 11:55:07,039 INFO L158 Benchmark]: CDTParser took 0.72ms. Allocated memory is still 96.5MB. Free memory was 57.3MB in the beginning and 57.2MB in the end (delta: 92.0kB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-21 11:55:07,040 INFO L158 Benchmark]: CACSL2BoogieTranslator took 227.45ms. Allocated memory is still 155.2MB. Free memory was 87.7MB in the beginning and 117.8MB in the end (delta: -30.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-21 11:55:07,040 INFO L158 Benchmark]: Boogie Procedure Inliner took 14.44ms. Allocated memory is still 155.2MB. Free memory was 117.8MB in the beginning and 116.4MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-21 11:55:07,040 INFO L158 Benchmark]: Boogie Preprocessor took 31.94ms. Allocated memory is still 155.2MB. Free memory was 116.4MB in the beginning and 114.9MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-21 11:55:07,040 INFO L158 Benchmark]: RCFGBuilder took 278.68ms. Allocated memory is still 155.2MB. Free memory was 114.9MB in the beginning and 100.7MB in the end (delta: 14.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-09-21 11:55:07,040 INFO L158 Benchmark]: TraceAbstraction took 16494.88ms. Allocated memory was 155.2MB in the beginning and 186.6MB in the end (delta: 31.5MB). Free memory was 99.6MB in the beginning and 146.4MB in the end (delta: -46.8MB). Peak memory consumption was 91.7MB. Max. memory is 16.1GB. [2024-09-21 11:55:07,040 INFO L158 Benchmark]: Witness Printer took 40.51ms. Allocated memory is still 186.6MB. Free memory was 146.4MB in the beginning and 144.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-21 11:55:07,041 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.72ms. Allocated memory is still 96.5MB. Free memory was 57.3MB in the beginning and 57.2MB in the end (delta: 92.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 227.45ms. Allocated memory is still 155.2MB. Free memory was 87.7MB in the beginning and 117.8MB in the end (delta: -30.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 14.44ms. Allocated memory is still 155.2MB. Free memory was 117.8MB in the beginning and 116.4MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 31.94ms. Allocated memory is still 155.2MB. Free memory was 116.4MB in the beginning and 114.9MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 278.68ms. Allocated memory is still 155.2MB. Free memory was 114.9MB in the beginning and 100.7MB in the end (delta: 14.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 16494.88ms. Allocated memory was 155.2MB in the beginning and 186.6MB in the end (delta: 31.5MB). Free memory was 99.6MB in the beginning and 146.4MB in the end (delta: -46.8MB). Peak memory consumption was 91.7MB. Max. memory is 16.1GB. * Witness Printer took 40.51ms. Allocated memory is still 186.6MB. Free memory was 146.4MB in the beginning and 144.3MB 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: 15.7s, OverallIterations: 11, TraceHistogramMax: 17, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 7.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1 mSolverCounterUnknown, 416 SdHoareTripleChecker+Valid, 6.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 392 mSDsluCounter, 3076 SdHoareTripleChecker+Invalid, 5.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2640 mSDsCounter, 402 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1934 IncrementalHoareTripleChecker+Invalid, 2337 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 402 mSolverCounterUnsat, 436 mSDtfsCounter, 1934 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1471 GetRequests, 1281 SyntacticMatches, 6 SemanticMatches, 184 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 839 ImplicationChecksByTransitivity, 2.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=189occurred in iteration=9, InterpolantAutomatonStates: 118, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 11 MinimizatonAttempts, 108 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 4.7s InterpolantComputationTime, 1540 NumberOfCodeBlocks, 1540 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 1603 ConstructedInterpolants, 0 QuantifiedInterpolants, 5248 SizeOfPredicates, 23 NumberOfNonLiveVariables, 1837 ConjunctsInSsa, 212 ConjunctsInUnsatCore, 20 InterpolantComputations, 4 PerfectInterpolantSequences, 3904/4266 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: ((((((((((((a == 1) && (r == 0)) && (b == 1)) && (y == 1)) && (k == 0)) && (s == 1)) && (x == 1)) && (q == 0)) && (yy == 1)) && (c == 1)) && (p == 1)) || (((((((((((a == 1) && (r == 0)) && (b == 1)) && (y == 1)) && (s == 1)) && (x == 1)) && (k == 1)) && (q == 0)) && (c == 0)) && (yy == 1)) && (p == 1))) - InvariantResult [Line: 41]: Loop Invariant Derived loop invariant: ((((((((((a == 1) && (r == 0)) && (b == 1)) && (y == 1)) && (s == 1)) && (x == 1)) && (q == 0)) && (yy == 1)) && (p == 1)) || (((((b == 0) && (y == 1)) && (a == (((__int128) y * r) + ((__int128) p * x)))) && (x == 1)) && (((__int128) q + s) == 0))) - ProcedureContractResult [Line: 7]: Procedure Contract for assume_abort_if_not Derived contract for procedure assume_abort_if_not. Ensures: (cond != 0) - ProcedureContractResult [Line: 10]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert. Requires: (1 <= cond) Ensures: (1 <= cond) RESULT: Ultimate proved your program to be correct! [2024-09-21 11:55:07,059 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