./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loop-invgen/down.i --full-output --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --witnessprinter.generate.graphml.witnesses false --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ca4ee3dd Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/certificate-witnesses-artifact/automizer/data/config -Xmx15G -Xms4m -jar /storage/repos/certificate-witnesses-artifact/automizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/certificate-witnesses-artifact/automizer/data -tc /storage/repos/certificate-witnesses-artifact/automizer/config/AutomizerReach.xml -i ../sv-benchmarks/c/loop-invgen/down.i -s /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/certificate-witnesses-artifact/automizer --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d487f6cb836d5c7294168f7ececc6a4515780c0860389f79570a9c0e20e7bcc0 --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --witnessprinter.generate.graphml.witnesses false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.dk.referee-eval-ca4ee3d-m [2024-09-20 18:45:39,767 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-20 18:45:39,832 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-20 18:45:39,836 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-20 18:45:39,837 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-20 18:45:39,870 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-20 18:45:39,870 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-20 18:45:39,871 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-20 18:45:39,871 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-20 18:45:39,872 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-20 18:45:39,872 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-20 18:45:39,872 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-20 18:45:39,873 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-20 18:45:39,873 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-20 18:45:39,875 INFO L153 SettingsManager]: * Use SBE=true [2024-09-20 18:45:39,875 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-20 18:45:39,876 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-20 18:45:39,879 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-20 18:45:39,879 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-20 18:45:39,879 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-20 18:45:39,880 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-20 18:45:39,880 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-20 18:45:39,880 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-20 18:45:39,881 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-20 18:45:39,881 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-20 18:45:39,881 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-20 18:45:39,881 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-20 18:45:39,881 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-20 18:45:39,882 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-20 18:45:39,882 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-20 18:45:39,882 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-20 18:45:39,882 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-20 18:45:39,883 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-20 18:45:39,883 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-20 18:45:39,885 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-20 18:45:39,885 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-20 18:45:39,886 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-20 18:45:39,886 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-20 18:45:39,887 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-20 18:45:39,887 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-20 18:45:39,887 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-20 18:45:39,888 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-20 18:45:39,888 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d487f6cb836d5c7294168f7ececc6a4515780c0860389f79570a9c0e20e7bcc0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Generate GraphML witnesses -> false [2024-09-20 18:45:40,192 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-20 18:45:40,214 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-20 18:45:40,216 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-20 18:45:40,217 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-20 18:45:40,218 INFO L274 PluginConnector]: CDTParser initialized [2024-09-20 18:45:40,219 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/loop-invgen/down.i [2024-09-20 18:45:41,655 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-20 18:45:41,870 INFO L384 CDTParser]: Found 1 translation units. [2024-09-20 18:45:41,871 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-invgen/down.i [2024-09-20 18:45:41,883 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/d214cb8b6/363435ecb2d047df8a29fcc9023a5e82/FLAG6a40b5c80 [2024-09-20 18:45:41,901 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/d214cb8b6/363435ecb2d047df8a29fcc9023a5e82 [2024-09-20 18:45:41,904 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-20 18:45:41,905 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-20 18:45:41,906 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-20 18:45:41,906 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-20 18:45:41,914 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-20 18:45:41,915 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 06:45:41" (1/1) ... [2024-09-20 18:45:41,916 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a323d2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 06:45:41, skipping insertion in model container [2024-09-20 18:45:41,916 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 06:45:41" (1/1) ... [2024-09-20 18:45:41,936 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-20 18:45:42,083 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/loop-invgen/down.i[893,906] [2024-09-20 18:45:42,093 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-20 18:45:42,102 INFO L200 MainTranslator]: Completed pre-run [2024-09-20 18:45:42,113 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/loop-invgen/down.i[893,906] [2024-09-20 18:45:42,116 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-20 18:45:42,140 INFO L204 MainTranslator]: Completed translation [2024-09-20 18:45:42,141 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 06:45:42 WrapperNode [2024-09-20 18:45:42,142 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-20 18:45:42,143 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-20 18:45:42,143 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-20 18:45:42,143 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-20 18:45:42,150 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 06:45:42" (1/1) ... [2024-09-20 18:45:42,156 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 06:45:42" (1/1) ... [2024-09-20 18:45:42,161 INFO L138 Inliner]: procedures = 16, calls = 7, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-20 18:45:42,161 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-20 18:45:42,162 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-20 18:45:42,162 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-20 18:45:42,162 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-20 18:45:42,170 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 06:45:42" (1/1) ... [2024-09-20 18:45:42,170 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 06:45:42" (1/1) ... [2024-09-20 18:45:42,171 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 06:45:42" (1/1) ... [2024-09-20 18:45:42,184 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-09-20 18:45:42,185 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 06:45:42" (1/1) ... [2024-09-20 18:45:42,185 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 06:45:42" (1/1) ... [2024-09-20 18:45:42,187 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 06:45:42" (1/1) ... [2024-09-20 18:45:42,190 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 06:45:42" (1/1) ... [2024-09-20 18:45:42,191 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 06:45:42" (1/1) ... [2024-09-20 18:45:42,192 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 06:45:42" (1/1) ... [2024-09-20 18:45:42,194 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-20 18:45:42,195 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-20 18:45:42,196 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-20 18:45:42,196 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-20 18:45:42,197 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 06:45:42" (1/1) ... [2024-09-20 18:45:42,201 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-20 18:45:42,212 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:45:42,229 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-09-20 18:45:42,232 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-09-20 18:45:42,281 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-20 18:45:42,281 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-20 18:45:42,281 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-20 18:45:42,281 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-20 18:45:42,281 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-20 18:45:42,282 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-20 18:45:42,282 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-20 18:45:42,283 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-20 18:45:42,283 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-20 18:45:42,283 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-20 18:45:42,349 INFO L242 CfgBuilder]: Building ICFG [2024-09-20 18:45:42,351 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-20 18:45:42,497 INFO L? ?]: Removed 6 outVars from TransFormulas that were not future-live. [2024-09-20 18:45:42,497 INFO L291 CfgBuilder]: Performing block encoding [2024-09-20 18:45:42,529 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-20 18:45:42,529 INFO L318 CfgBuilder]: Removed 2 assume(true) statements. [2024-09-20 18:45:42,529 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 06:45:42 BoogieIcfgContainer [2024-09-20 18:45:42,530 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-20 18:45:42,531 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-20 18:45:42,532 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-20 18:45:42,535 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-20 18:45:42,535 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 06:45:41" (1/3) ... [2024-09-20 18:45:42,536 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1647f9b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 06:45:42, skipping insertion in model container [2024-09-20 18:45:42,536 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 06:45:42" (2/3) ... [2024-09-20 18:45:42,536 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1647f9b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 06:45:42, skipping insertion in model container [2024-09-20 18:45:42,536 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 06:45:42" (3/3) ... [2024-09-20 18:45:42,537 INFO L112 eAbstractionObserver]: Analyzing ICFG down.i [2024-09-20 18:45:42,553 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-20 18:45:42,553 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-20 18:45:42,612 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-20 18:45:42,621 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;@469908b3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-20 18:45:42,622 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-20 18:45:42,626 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 12 states have (on average 1.5) internal successors, (18), 13 states have internal predecessors, (18), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-20 18:45:42,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-09-20 18:45:42,633 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:45:42,633 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:45:42,634 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:45:42,640 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:45:42,640 INFO L85 PathProgramCache]: Analyzing trace with hash -1421332849, now seen corresponding path program 1 times [2024-09-20 18:45:42,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:45:42,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553758398] [2024-09-20 18:45:42,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:45:42,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:45:42,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:42,775 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:45:42,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:42,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-20 18:45:42,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:45:42,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553758398] [2024-09-20 18:45:42,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553758398] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-20 18:45:42,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-20 18:45:42,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-20 18:45:42,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220392344] [2024-09-20 18:45:42,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-20 18:45:42,794 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-09-20 18:45:42,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:45:42,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-09-20 18:45:42,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-20 18:45:42,818 INFO L87 Difference]: Start difference. First operand has 20 states, 12 states have (on average 1.5) internal successors, (18), 13 states have internal predecessors, (18), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-20 18:45:42,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:45:42,846 INFO L93 Difference]: Finished difference Result 34 states and 41 transitions. [2024-09-20 18:45:42,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-20 18:45:42,849 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2024-09-20 18:45:42,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:45:42,855 INFO L225 Difference]: With dead ends: 34 [2024-09-20 18:45:42,855 INFO L226 Difference]: Without dead ends: 16 [2024-09-20 18:45:42,859 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-20 18:45:42,866 INFO L434 NwaCegarLoop]: 19 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, 19 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-20 18:45:42,868 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 19 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-20 18:45:42,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2024-09-20 18:45:42,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2024-09-20 18:45:42,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-20 18:45:42,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2024-09-20 18:45:42,911 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 12 [2024-09-20 18:45:42,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:45:42,912 INFO L474 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2024-09-20 18:45:42,912 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-20 18:45:42,913 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:45:42,914 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2024-09-20 18:45:42,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-09-20 18:45:42,915 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:45:42,915 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:45:42,916 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-20 18:45:42,916 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:45:42,916 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:45:42,917 INFO L85 PathProgramCache]: Analyzing trace with hash -676380277, now seen corresponding path program 1 times [2024-09-20 18:45:42,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:45:42,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685743245] [2024-09-20 18:45:42,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:45:42,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:45:42,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:43,078 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:45:43,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:43,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-20 18:45:43,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:45:43,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685743245] [2024-09-20 18:45:43,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685743245] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-20 18:45:43,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-20 18:45:43,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-20 18:45:43,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262756656] [2024-09-20 18:45:43,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-20 18:45:43,095 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-20 18:45:43,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:45:43,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-20 18:45:43,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-20 18:45:43,097 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-20 18:45:43,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:45:43,142 INFO L93 Difference]: Finished difference Result 28 states and 30 transitions. [2024-09-20 18:45:43,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-20 18:45:43,143 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2024-09-20 18:45:43,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:45:43,144 INFO L225 Difference]: With dead ends: 28 [2024-09-20 18:45:43,144 INFO L226 Difference]: Without dead ends: 17 [2024-09-20 18:45:43,144 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-20 18:45:43,146 INFO L434 NwaCegarLoop]: 13 mSDtfsCounter, 0 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-20 18:45:43,147 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 48 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-20 18:45:43,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2024-09-20 18:45:43,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2024-09-20 18:45:43,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 11 states have internal predecessors, (13), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-20 18:45:43,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2024-09-20 18:45:43,154 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 12 [2024-09-20 18:45:43,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:45:43,154 INFO L474 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2024-09-20 18:45:43,154 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-20 18:45:43,156 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:45:43,156 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2024-09-20 18:45:43,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-09-20 18:45:43,157 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:45:43,157 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:45:43,157 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-09-20 18:45:43,158 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:45:43,159 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:45:43,159 INFO L85 PathProgramCache]: Analyzing trace with hash -1610812905, now seen corresponding path program 1 times [2024-09-20 18:45:43,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:45:43,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008706471] [2024-09-20 18:45:43,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:45:43,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:45:43,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:43,323 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:45:43,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:43,331 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-20 18:45:43,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:45:43,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008706471] [2024-09-20 18:45:43,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008706471] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:45:43,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2109041685] [2024-09-20 18:45:43,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:45:43,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:45:43,338 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:45:43,343 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:45:43,345 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-20 18:45:43,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:43,393 INFO L262 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-09-20 18:45:43,400 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:45:43,493 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-20 18:45:43,494 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-20 18:45:43,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2109041685] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-20 18:45:43,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-20 18:45:43,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 9 [2024-09-20 18:45:43,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115407178] [2024-09-20 18:45:43,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-20 18:45:43,495 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-20 18:45:43,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:45:43,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-20 18:45:43,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-09-20 18:45:43,507 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand has 6 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-20 18:45:43,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:45:43,588 INFO L93 Difference]: Finished difference Result 29 states and 31 transitions. [2024-09-20 18:45:43,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-20 18:45:43,589 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2024-09-20 18:45:43,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:45:43,591 INFO L225 Difference]: With dead ends: 29 [2024-09-20 18:45:43,591 INFO L226 Difference]: Without dead ends: 27 [2024-09-20 18:45:43,592 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-09-20 18:45:43,593 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 18:45:43,593 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 42 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 18:45:43,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-09-20 18:45:43,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 23. [2024-09-20 18:45:43,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 16 states have internal predecessors, (17), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-20 18:45:43,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2024-09-20 18:45:43,602 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 13 [2024-09-20 18:45:43,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:45:43,603 INFO L474 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2024-09-20 18:45:43,603 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-20 18:45:43,603 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:45:43,603 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2024-09-20 18:45:43,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-09-20 18:45:43,604 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:45:43,604 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:45:43,617 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-09-20 18:45:43,804 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:45:43,805 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:45:43,805 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:45:43,805 INFO L85 PathProgramCache]: Analyzing trace with hash -2016151891, now seen corresponding path program 1 times [2024-09-20 18:45:43,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:45:43,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900595351] [2024-09-20 18:45:43,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:45:43,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:45:43,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:43,912 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:45:43,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:43,920 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-09-20 18:45:43,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:43,933 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-20 18:45:43,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:45:43,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900595351] [2024-09-20 18:45:43,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900595351] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:45:43,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [237877162] [2024-09-20 18:45:43,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:45:43,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:45:43,934 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:45:43,936 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:45:43,940 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-20 18:45:43,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:43,990 INFO L262 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-09-20 18:45:43,992 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:45:44,029 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-20 18:45:44,029 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:45:44,080 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-20 18:45:44,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [237877162] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:45:44,080 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:45:44,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 8 [2024-09-20 18:45:44,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138352513] [2024-09-20 18:45:44,081 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:45:44,081 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-09-20 18:45:44,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:45:44,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-09-20 18:45:44,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-09-20 18:45:44,083 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-20 18:45:44,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:45:44,117 INFO L93 Difference]: Finished difference Result 38 states and 41 transitions. [2024-09-20 18:45:44,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-20 18:45:44,118 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 20 [2024-09-20 18:45:44,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:45:44,121 INFO L225 Difference]: With dead ends: 38 [2024-09-20 18:45:44,121 INFO L226 Difference]: Without dead ends: 24 [2024-09-20 18:45:44,122 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 40 SyntacticMatches, 4 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-09-20 18:45:44,124 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 0 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-20 18:45:44,125 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 52 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-20 18:45:44,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2024-09-20 18:45:44,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2024-09-20 18:45:44,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 16 states have (on average 1.125) internal successors, (18), 17 states have internal predecessors, (18), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-20 18:45:44,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2024-09-20 18:45:44,135 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 20 [2024-09-20 18:45:44,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:45:44,135 INFO L474 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2024-09-20 18:45:44,135 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-20 18:45:44,136 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:45:44,136 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2024-09-20 18:45:44,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-09-20 18:45:44,139 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:45:44,139 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:45:44,157 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-09-20 18:45:44,343 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:45:44,343 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:45:44,344 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:45:44,344 INFO L85 PathProgramCache]: Analyzing trace with hash -723625159, now seen corresponding path program 2 times [2024-09-20 18:45:44,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:45:44,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083239502] [2024-09-20 18:45:44,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:45:44,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:45:44,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:44,501 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:45:44,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:44,505 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-20 18:45:44,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:44,509 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-20 18:45:44,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:45:44,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083239502] [2024-09-20 18:45:44,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083239502] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:45:44,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [864774052] [2024-09-20 18:45:44,510 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-20 18:45:44,510 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:45:44,511 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:45:44,512 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:45:44,514 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-20 18:45:44,550 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-20 18:45:44,550 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:45:44,552 INFO L262 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-09-20 18:45:44,554 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:45:44,615 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-20 18:45:44,615 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:45:44,677 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-20 18:45:44,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [864774052] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:45:44,678 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:45:44,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2024-09-20 18:45:44,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357211099] [2024-09-20 18:45:44,678 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:45:44,679 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-09-20 18:45:44,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:45:44,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-09-20 18:45:44,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-09-20 18:45:44,680 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand has 10 states, 10 states have (on average 1.9) internal successors, (19), 8 states have internal predecessors, (19), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-20 18:45:44,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:45:44,730 INFO L93 Difference]: Finished difference Result 37 states and 39 transitions. [2024-09-20 18:45:44,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-09-20 18:45:44,732 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.9) internal successors, (19), 8 states have internal predecessors, (19), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 21 [2024-09-20 18:45:44,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:45:44,733 INFO L225 Difference]: With dead ends: 37 [2024-09-20 18:45:44,733 INFO L226 Difference]: Without dead ends: 35 [2024-09-20 18:45:44,734 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 39 SyntacticMatches, 6 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-09-20 18:45:44,734 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-20 18:45:44,735 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 53 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-20 18:45:44,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2024-09-20 18:45:44,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 31. [2024-09-20 18:45:44,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 21 states have (on average 1.0952380952380953) internal successors, (23), 22 states have internal predecessors, (23), 5 states have call successors, (5), 5 states have call predecessors, (5), 4 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2024-09-20 18:45:44,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 32 transitions. [2024-09-20 18:45:44,743 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 32 transitions. Word has length 21 [2024-09-20 18:45:44,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:45:44,743 INFO L474 AbstractCegarLoop]: Abstraction has 31 states and 32 transitions. [2024-09-20 18:45:44,744 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.9) internal successors, (19), 8 states have internal predecessors, (19), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-20 18:45:44,744 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:45:44,744 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 32 transitions. [2024-09-20 18:45:44,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-09-20 18:45:44,745 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:45:44,745 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:45:44,756 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-09-20 18:45:44,945 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:45:44,946 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:45:44,946 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:45:44,946 INFO L85 PathProgramCache]: Analyzing trace with hash 1797415755, now seen corresponding path program 3 times [2024-09-20 18:45:44,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:45:44,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431590720] [2024-09-20 18:45:44,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:45:44,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:45:44,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:45,056 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:45:45,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:45,059 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-20 18:45:45,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:45,064 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-20 18:45:45,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:45,068 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-20 18:45:45,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:45:45,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431590720] [2024-09-20 18:45:45,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431590720] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:45:45,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [352896842] [2024-09-20 18:45:45,070 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-20 18:45:45,070 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:45:45,072 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:45:45,074 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:45:45,075 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-20 18:45:45,127 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-09-20 18:45:45,127 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:45:45,129 INFO L262 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-09-20 18:45:45,131 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:45:45,170 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-20 18:45:45,170 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:45:45,239 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-20 18:45:45,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [352896842] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:45:45,239 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:45:45,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 10 [2024-09-20 18:45:45,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183758225] [2024-09-20 18:45:45,240 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:45:45,240 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-09-20 18:45:45,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:45:45,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-09-20 18:45:45,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-09-20 18:45:45,244 INFO L87 Difference]: Start difference. First operand 31 states and 32 transitions. Second operand has 10 states, 10 states have (on average 1.9) internal successors, (19), 10 states have internal predecessors, (19), 4 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-20 18:45:45,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:45:45,302 INFO L93 Difference]: Finished difference Result 49 states and 53 transitions. [2024-09-20 18:45:45,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-09-20 18:45:45,303 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.9) internal successors, (19), 10 states have internal predecessors, (19), 4 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 28 [2024-09-20 18:45:45,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:45:45,304 INFO L225 Difference]: With dead ends: 49 [2024-09-20 18:45:45,304 INFO L226 Difference]: Without dead ends: 32 [2024-09-20 18:45:45,304 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 56 SyntacticMatches, 6 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-09-20 18:45:45,305 INFO L434 NwaCegarLoop]: 13 mSDtfsCounter, 0 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-20 18:45:45,305 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 84 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-20 18:45:45,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-09-20 18:45:45,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2024-09-20 18:45:45,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 22 states have (on average 1.0909090909090908) internal successors, (24), 23 states have internal predecessors, (24), 5 states have call successors, (5), 5 states have call predecessors, (5), 4 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2024-09-20 18:45:45,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 33 transitions. [2024-09-20 18:45:45,314 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 33 transitions. Word has length 28 [2024-09-20 18:45:45,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:45:45,314 INFO L474 AbstractCegarLoop]: Abstraction has 32 states and 33 transitions. [2024-09-20 18:45:45,314 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.9) internal successors, (19), 10 states have internal predecessors, (19), 4 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-20 18:45:45,315 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:45:45,315 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 33 transitions. [2024-09-20 18:45:45,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-09-20 18:45:45,315 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:45:45,315 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:45:45,328 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-09-20 18:45:45,516 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:45:45,516 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:45:45,517 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:45:45,517 INFO L85 PathProgramCache]: Analyzing trace with hash -554337321, now seen corresponding path program 4 times [2024-09-20 18:45:45,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:45:45,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682167070] [2024-09-20 18:45:45,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:45:45,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:45:45,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:45,632 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:45:45,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:45,635 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-20 18:45:45,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:45,639 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-09-20 18:45:45,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:45,643 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 7 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-20 18:45:45,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:45:45,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682167070] [2024-09-20 18:45:45,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682167070] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:45:45,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [764162960] [2024-09-20 18:45:45,644 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-20 18:45:45,644 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:45:45,645 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:45:45,646 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:45:45,647 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-09-20 18:45:45,698 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-20 18:45:45,698 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:45:45,700 INFO L262 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-09-20 18:45:45,701 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:45:45,746 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 10 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-20 18:45:45,747 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:45:45,805 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 10 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-20 18:45:45,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [764162960] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:45:45,805 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:45:45,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 11 [2024-09-20 18:45:45,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108337723] [2024-09-20 18:45:45,806 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:45:45,806 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-09-20 18:45:45,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:45:45,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-09-20 18:45:45,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-09-20 18:45:45,808 INFO L87 Difference]: Start difference. First operand 32 states and 33 transitions. Second operand has 11 states, 11 states have (on average 2.0) internal successors, (22), 9 states have internal predecessors, (22), 4 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-20 18:45:45,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:45:45,861 INFO L93 Difference]: Finished difference Result 45 states and 47 transitions. [2024-09-20 18:45:45,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-09-20 18:45:45,862 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.0) internal successors, (22), 9 states have internal predecessors, (22), 4 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 29 [2024-09-20 18:45:45,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:45:45,862 INFO L225 Difference]: With dead ends: 45 [2024-09-20 18:45:45,862 INFO L226 Difference]: Without dead ends: 43 [2024-09-20 18:45:45,863 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 58 SyntacticMatches, 6 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-09-20 18:45:45,864 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-20 18:45:45,864 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 72 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-20 18:45:45,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2024-09-20 18:45:45,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 39. [2024-09-20 18:45:45,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 27 states have (on average 1.0740740740740742) internal successors, (29), 28 states have internal predecessors, (29), 6 states have call successors, (6), 6 states have call predecessors, (6), 5 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2024-09-20 18:45:45,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 40 transitions. [2024-09-20 18:45:45,876 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 40 transitions. Word has length 29 [2024-09-20 18:45:45,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:45:45,877 INFO L474 AbstractCegarLoop]: Abstraction has 39 states and 40 transitions. [2024-09-20 18:45:45,877 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.0) internal successors, (22), 9 states have internal predecessors, (22), 4 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-20 18:45:45,877 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:45:45,878 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 40 transitions. [2024-09-20 18:45:45,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-09-20 18:45:45,879 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:45:45,879 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:45:45,895 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-09-20 18:45:46,083 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-09-20 18:45:46,084 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:45:46,084 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:45:46,084 INFO L85 PathProgramCache]: Analyzing trace with hash 1807807725, now seen corresponding path program 5 times [2024-09-20 18:45:46,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:45:46,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510751714] [2024-09-20 18:45:46,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:45:46,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:45:46,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:46,192 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:45:46,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:46,195 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-20 18:45:46,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:46,198 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-09-20 18:45:46,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:46,201 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-09-20 18:45:46,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:46,204 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 21 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-20 18:45:46,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:45:46,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510751714] [2024-09-20 18:45:46,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510751714] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:45:46,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1095687806] [2024-09-20 18:45:46,205 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-20 18:45:46,205 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:45:46,205 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:45:46,207 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:45:46,211 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-09-20 18:45:46,252 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-09-20 18:45:46,252 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:45:46,254 INFO L262 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-09-20 18:45:46,256 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:45:46,301 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 21 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-20 18:45:46,301 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:45:46,394 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 21 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-20 18:45:46,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1095687806] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:45:46,395 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:45:46,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 12 [2024-09-20 18:45:46,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346426429] [2024-09-20 18:45:46,395 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:45:46,396 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-09-20 18:45:46,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:45:46,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-09-20 18:45:46,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2024-09-20 18:45:46,397 INFO L87 Difference]: Start difference. First operand 39 states and 40 transitions. Second operand has 12 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 12 states have internal predecessors, (22), 5 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-09-20 18:45:46,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:45:46,445 INFO L93 Difference]: Finished difference Result 60 states and 65 transitions. [2024-09-20 18:45:46,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-09-20 18:45:46,446 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 12 states have internal predecessors, (22), 5 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 36 [2024-09-20 18:45:46,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:45:46,447 INFO L225 Difference]: With dead ends: 60 [2024-09-20 18:45:46,447 INFO L226 Difference]: Without dead ends: 40 [2024-09-20 18:45:46,448 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 72 SyntacticMatches, 8 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2024-09-20 18:45:46,448 INFO L434 NwaCegarLoop]: 15 mSDtfsCounter, 0 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-20 18:45:46,449 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 70 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-20 18:45:46,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2024-09-20 18:45:46,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2024-09-20 18:45:46,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 28 states have (on average 1.0714285714285714) internal successors, (30), 29 states have internal predecessors, (30), 6 states have call successors, (6), 6 states have call predecessors, (6), 5 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2024-09-20 18:45:46,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 41 transitions. [2024-09-20 18:45:46,459 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 41 transitions. Word has length 36 [2024-09-20 18:45:46,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:45:46,459 INFO L474 AbstractCegarLoop]: Abstraction has 40 states and 41 transitions. [2024-09-20 18:45:46,460 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 12 states have internal predecessors, (22), 5 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-09-20 18:45:46,460 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:45:46,460 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 41 transitions. [2024-09-20 18:45:46,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-09-20 18:45:46,461 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:45:46,461 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:45:46,477 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-09-20 18:45:46,661 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:45:46,662 INFO L399 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:45:46,662 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:45:46,662 INFO L85 PathProgramCache]: Analyzing trace with hash -597114503, now seen corresponding path program 6 times [2024-09-20 18:45:46,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:45:46,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961255393] [2024-09-20 18:45:46,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:45:46,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:45:46,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:46,793 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:45:46,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:46,796 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-09-20 18:45:46,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:46,802 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-09-20 18:45:46,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:46,804 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-09-20 18:45:46,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:46,808 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 12 proven. 19 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-20 18:45:46,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:45:46,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961255393] [2024-09-20 18:45:46,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961255393] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:45:46,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [830453662] [2024-09-20 18:45:46,809 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-20 18:45:46,809 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:45:46,809 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:45:46,811 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:45:46,813 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-09-20 18:45:46,853 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-09-20 18:45:46,853 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:45:46,854 INFO L262 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-09-20 18:45:46,856 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:45:46,922 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 16 proven. 15 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-20 18:45:46,922 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:45:47,001 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 16 proven. 15 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-20 18:45:47,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [830453662] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:45:47,001 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:45:47,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 12 [2024-09-20 18:45:47,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449998145] [2024-09-20 18:45:47,002 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:45:47,002 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-09-20 18:45:47,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:45:47,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-09-20 18:45:47,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-09-20 18:45:47,003 INFO L87 Difference]: Start difference. First operand 40 states and 41 transitions. Second operand has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 10 states have internal predecessors, (25), 5 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-09-20 18:45:47,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:45:47,061 INFO L93 Difference]: Finished difference Result 53 states and 55 transitions. [2024-09-20 18:45:47,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-09-20 18:45:47,062 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 10 states have internal predecessors, (25), 5 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 37 [2024-09-20 18:45:47,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:45:47,062 INFO L225 Difference]: With dead ends: 53 [2024-09-20 18:45:47,063 INFO L226 Difference]: Without dead ends: 51 [2024-09-20 18:45:47,063 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 75 SyntacticMatches, 8 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2024-09-20 18:45:47,064 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-20 18:45:47,065 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 59 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-20 18:45:47,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2024-09-20 18:45:47,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 47. [2024-09-20 18:45:47,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 33 states have (on average 1.0606060606060606) internal successors, (35), 34 states have internal predecessors, (35), 7 states have call successors, (7), 7 states have call predecessors, (7), 6 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-20 18:45:47,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 48 transitions. [2024-09-20 18:45:47,075 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 48 transitions. Word has length 37 [2024-09-20 18:45:47,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:45:47,077 INFO L474 AbstractCegarLoop]: Abstraction has 47 states and 48 transitions. [2024-09-20 18:45:47,077 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 10 states have internal predecessors, (25), 5 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-09-20 18:45:47,077 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:45:47,077 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 48 transitions. [2024-09-20 18:45:47,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-09-20 18:45:47,078 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:45:47,078 INFO L216 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:45:47,095 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-09-20 18:45:47,278 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:45:47,279 INFO L399 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:45:47,279 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:45:47,279 INFO L85 PathProgramCache]: Analyzing trace with hash 1686402315, now seen corresponding path program 7 times [2024-09-20 18:45:47,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:45:47,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514528418] [2024-09-20 18:45:47,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:45:47,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:45:47,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:47,419 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:45:47,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:47,422 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-09-20 18:45:47,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:47,426 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-09-20 18:45:47,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:47,430 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-09-20 18:45:47,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:47,434 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-20 18:45:47,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:47,438 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 34 proven. 10 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-20 18:45:47,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:45:47,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514528418] [2024-09-20 18:45:47,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514528418] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:45:47,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2094007717] [2024-09-20 18:45:47,438 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-20 18:45:47,439 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:45:47,439 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:45:47,440 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:45:47,442 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-09-20 18:45:47,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:47,487 INFO L262 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-09-20 18:45:47,491 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:45:47,541 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 34 proven. 10 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-20 18:45:47,541 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:45:47,659 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 34 proven. 10 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-20 18:45:47,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2094007717] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:45:47,660 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:45:47,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 14 [2024-09-20 18:45:47,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069863024] [2024-09-20 18:45:47,660 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:45:47,660 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-09-20 18:45:47,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:45:47,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-09-20 18:45:47,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2024-09-20 18:45:47,661 INFO L87 Difference]: Start difference. First operand 47 states and 48 transitions. Second operand has 14 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 14 states have internal predecessors, (25), 6 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-09-20 18:45:47,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:45:47,727 INFO L93 Difference]: Finished difference Result 71 states and 77 transitions. [2024-09-20 18:45:47,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-09-20 18:45:47,727 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 14 states have internal predecessors, (25), 6 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Word has length 44 [2024-09-20 18:45:47,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:45:47,728 INFO L225 Difference]: With dead ends: 71 [2024-09-20 18:45:47,730 INFO L226 Difference]: Without dead ends: 48 [2024-09-20 18:45:47,730 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 88 SyntacticMatches, 10 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2024-09-20 18:45:47,731 INFO L434 NwaCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 18:45:47,732 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 76 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 18:45:47,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2024-09-20 18:45:47,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2024-09-20 18:45:47,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 34 states have (on average 1.0588235294117647) internal successors, (36), 35 states have internal predecessors, (36), 7 states have call successors, (7), 7 states have call predecessors, (7), 6 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-20 18:45:47,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 49 transitions. [2024-09-20 18:45:47,740 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 49 transitions. Word has length 44 [2024-09-20 18:45:47,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:45:47,741 INFO L474 AbstractCegarLoop]: Abstraction has 48 states and 49 transitions. [2024-09-20 18:45:47,741 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 14 states have internal predecessors, (25), 6 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-09-20 18:45:47,741 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:45:47,741 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 49 transitions. [2024-09-20 18:45:47,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-09-20 18:45:47,743 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:45:47,743 INFO L216 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:45:47,761 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-09-20 18:45:47,943 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,9 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:45:47,944 INFO L399 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:45:47,944 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:45:47,944 INFO L85 PathProgramCache]: Analyzing trace with hash -603130473, now seen corresponding path program 8 times [2024-09-20 18:45:47,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:45:47,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111372849] [2024-09-20 18:45:47,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:45:47,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:45:47,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:48,084 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:45:48,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:48,086 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-09-20 18:45:48,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:48,089 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-09-20 18:45:48,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:48,092 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-20 18:45:48,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:48,095 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-20 18:45:48,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:48,098 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 18 proven. 31 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-20 18:45:48,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:45:48,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111372849] [2024-09-20 18:45:48,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111372849] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:45:48,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1433180743] [2024-09-20 18:45:48,099 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-20 18:45:48,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:45:48,099 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:45:48,100 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:45:48,102 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-09-20 18:45:48,145 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-20 18:45:48,145 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:45:48,146 INFO L262 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-09-20 18:45:48,148 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:45:48,215 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 23 proven. 26 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-20 18:45:48,216 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:45:48,330 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 23 proven. 26 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-20 18:45:48,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1433180743] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:45:48,331 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:45:48,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 13 [2024-09-20 18:45:48,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050715637] [2024-09-20 18:45:48,331 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:45:48,331 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-09-20 18:45:48,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:45:48,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-09-20 18:45:48,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-09-20 18:45:48,332 INFO L87 Difference]: Start difference. First operand 48 states and 49 transitions. Second operand has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 11 states have internal predecessors, (28), 6 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-09-20 18:45:48,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:45:48,406 INFO L93 Difference]: Finished difference Result 61 states and 63 transitions. [2024-09-20 18:45:48,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-09-20 18:45:48,407 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 11 states have internal predecessors, (28), 6 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Word has length 45 [2024-09-20 18:45:48,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:45:48,408 INFO L225 Difference]: With dead ends: 61 [2024-09-20 18:45:48,408 INFO L226 Difference]: Without dead ends: 59 [2024-09-20 18:45:48,408 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 90 SyntacticMatches, 12 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2024-09-20 18:45:48,409 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 18:45:48,409 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 87 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 18:45:48,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2024-09-20 18:45:48,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 55. [2024-09-20 18:45:48,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 39 states have (on average 1.0512820512820513) internal successors, (41), 40 states have internal predecessors, (41), 8 states have call successors, (8), 8 states have call predecessors, (8), 7 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2024-09-20 18:45:48,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 56 transitions. [2024-09-20 18:45:48,422 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 56 transitions. Word has length 45 [2024-09-20 18:45:48,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:45:48,422 INFO L474 AbstractCegarLoop]: Abstraction has 55 states and 56 transitions. [2024-09-20 18:45:48,423 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 11 states have internal predecessors, (28), 6 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-09-20 18:45:48,423 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:45:48,423 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 56 transitions. [2024-09-20 18:45:48,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-09-20 18:45:48,425 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:45:48,425 INFO L216 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:45:48,440 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-09-20 18:45:48,625 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-09-20 18:45:48,626 INFO L399 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:45:48,626 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:45:48,626 INFO L85 PathProgramCache]: Analyzing trace with hash 769721133, now seen corresponding path program 9 times [2024-09-20 18:45:48,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:45:48,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764170379] [2024-09-20 18:45:48,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:45:48,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:45:48,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:48,777 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:45:48,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:48,780 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-09-20 18:45:48,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:48,783 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-09-20 18:45:48,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:48,786 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-20 18:45:48,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:48,788 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-20 18:45:48,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:48,791 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-09-20 18:45:48,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:48,794 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 50 proven. 15 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-09-20 18:45:48,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:45:48,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764170379] [2024-09-20 18:45:48,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764170379] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:45:48,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1190229753] [2024-09-20 18:45:48,795 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-20 18:45:48,795 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:45:48,795 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:45:48,797 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:45:48,798 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-09-20 18:45:48,844 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-09-20 18:45:48,844 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:45:48,845 INFO L262 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-09-20 18:45:48,846 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:45:48,890 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 50 proven. 15 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-09-20 18:45:48,891 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:45:49,022 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 50 proven. 15 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-09-20 18:45:49,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1190229753] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:45:49,022 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:45:49,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 16 [2024-09-20 18:45:49,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172741512] [2024-09-20 18:45:49,022 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:45:49,023 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-09-20 18:45:49,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:45:49,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-09-20 18:45:49,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2024-09-20 18:45:49,024 INFO L87 Difference]: Start difference. First operand 55 states and 56 transitions. Second operand has 16 states, 16 states have (on average 1.75) internal successors, (28), 16 states have internal predecessors, (28), 7 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-20 18:45:49,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:45:49,092 INFO L93 Difference]: Finished difference Result 82 states and 89 transitions. [2024-09-20 18:45:49,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-09-20 18:45:49,093 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.75) internal successors, (28), 16 states have internal predecessors, (28), 7 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 52 [2024-09-20 18:45:49,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:45:49,094 INFO L225 Difference]: With dead ends: 82 [2024-09-20 18:45:49,094 INFO L226 Difference]: Without dead ends: 56 [2024-09-20 18:45:49,095 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 104 SyntacticMatches, 12 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2024-09-20 18:45:49,095 INFO L434 NwaCegarLoop]: 19 mSDtfsCounter, 0 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 18:45:49,095 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 84 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 18:45:49,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2024-09-20 18:45:49,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2024-09-20 18:45:49,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 40 states have (on average 1.05) internal successors, (42), 41 states have internal predecessors, (42), 8 states have call successors, (8), 8 states have call predecessors, (8), 7 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2024-09-20 18:45:49,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 57 transitions. [2024-09-20 18:45:49,102 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 57 transitions. Word has length 52 [2024-09-20 18:45:49,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:45:49,102 INFO L474 AbstractCegarLoop]: Abstraction has 56 states and 57 transitions. [2024-09-20 18:45:49,103 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.75) internal successors, (28), 16 states have internal predecessors, (28), 7 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-20 18:45:49,103 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:45:49,103 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 57 transitions. [2024-09-20 18:45:49,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-09-20 18:45:49,104 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:45:49,104 INFO L216 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:45:49,120 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-09-20 18:45:49,304 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-09-20 18:45:49,305 INFO L399 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:45:49,305 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:45:49,305 INFO L85 PathProgramCache]: Analyzing trace with hash -363448391, now seen corresponding path program 10 times [2024-09-20 18:45:49,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:45:49,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877675617] [2024-09-20 18:45:49,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:45:49,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:45:49,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:49,442 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:45:49,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:49,444 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-09-20 18:45:49,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:49,446 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-20 18:45:49,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:49,449 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-20 18:45:49,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:49,451 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-09-20 18:45:49,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:49,453 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-20 18:45:49,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:49,455 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 25 proven. 46 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-09-20 18:45:49,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:45:49,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877675617] [2024-09-20 18:45:49,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877675617] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:45:49,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2034541819] [2024-09-20 18:45:49,456 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-20 18:45:49,456 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:45:49,456 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:45:49,458 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:45:49,459 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-09-20 18:45:49,501 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-20 18:45:49,501 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:45:49,502 INFO L262 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-09-20 18:45:49,503 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:45:49,567 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 31 proven. 40 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-09-20 18:45:49,567 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:45:49,678 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 31 proven. 40 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-09-20 18:45:49,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2034541819] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:45:49,679 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:45:49,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 14 [2024-09-20 18:45:49,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141636886] [2024-09-20 18:45:49,679 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:45:49,680 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-09-20 18:45:49,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:45:49,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-09-20 18:45:49,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2024-09-20 18:45:49,681 INFO L87 Difference]: Start difference. First operand 56 states and 57 transitions. Second operand has 14 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 12 states have internal predecessors, (31), 7 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-20 18:45:49,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:45:49,746 INFO L93 Difference]: Finished difference Result 69 states and 71 transitions. [2024-09-20 18:45:49,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-09-20 18:45:49,747 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 12 states have internal predecessors, (31), 7 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 53 [2024-09-20 18:45:49,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:45:49,747 INFO L225 Difference]: With dead ends: 69 [2024-09-20 18:45:49,747 INFO L226 Difference]: Without dead ends: 67 [2024-09-20 18:45:49,748 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 109 SyntacticMatches, 12 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2024-09-20 18:45:49,748 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 18:45:49,749 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 71 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 18:45:49,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2024-09-20 18:45:49,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 63. [2024-09-20 18:45:49,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 45 states have (on average 1.0444444444444445) internal successors, (47), 46 states have internal predecessors, (47), 9 states have call successors, (9), 9 states have call predecessors, (9), 8 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2024-09-20 18:45:49,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 64 transitions. [2024-09-20 18:45:49,756 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 64 transitions. Word has length 53 [2024-09-20 18:45:49,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:45:49,756 INFO L474 AbstractCegarLoop]: Abstraction has 63 states and 64 transitions. [2024-09-20 18:45:49,756 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 12 states have internal predecessors, (31), 7 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-20 18:45:49,756 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:45:49,757 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 64 transitions. [2024-09-20 18:45:49,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-09-20 18:45:49,757 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:45:49,757 INFO L216 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:45:49,773 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-09-20 18:45:49,961 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,12 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:45:49,962 INFO L399 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:45:49,962 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:45:49,962 INFO L85 PathProgramCache]: Analyzing trace with hash 82933451, now seen corresponding path program 11 times [2024-09-20 18:45:49,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:45:49,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986082876] [2024-09-20 18:45:49,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:45:49,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:45:49,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:50,168 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:45:50,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:50,173 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-09-20 18:45:50,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:50,176 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-20 18:45:50,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:50,179 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-20 18:45:50,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:50,182 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-09-20 18:45:50,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:50,184 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-20 18:45:50,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:50,186 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-09-20 18:45:50,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:50,189 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 69 proven. 21 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-20 18:45:50,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:45:50,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986082876] [2024-09-20 18:45:50,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986082876] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:45:50,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [190735450] [2024-09-20 18:45:50,190 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-20 18:45:50,190 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:45:50,190 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:45:50,192 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:45:50,194 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-09-20 18:45:50,244 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2024-09-20 18:45:50,244 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:45:50,246 INFO L262 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-09-20 18:45:50,248 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:45:50,301 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 69 proven. 21 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-20 18:45:50,301 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:45:50,457 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 69 proven. 21 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-20 18:45:50,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [190735450] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:45:50,458 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:45:50,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 18 [2024-09-20 18:45:50,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487127763] [2024-09-20 18:45:50,458 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:45:50,458 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-09-20 18:45:50,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:45:50,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-09-20 18:45:50,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2024-09-20 18:45:50,459 INFO L87 Difference]: Start difference. First operand 63 states and 64 transitions. Second operand has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 18 states have internal predecessors, (31), 8 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-09-20 18:45:50,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:45:50,527 INFO L93 Difference]: Finished difference Result 93 states and 101 transitions. [2024-09-20 18:45:50,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-09-20 18:45:50,527 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 18 states have internal predecessors, (31), 8 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Word has length 60 [2024-09-20 18:45:50,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:45:50,528 INFO L225 Difference]: With dead ends: 93 [2024-09-20 18:45:50,528 INFO L226 Difference]: Without dead ends: 64 [2024-09-20 18:45:50,529 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 120 SyntacticMatches, 14 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2024-09-20 18:45:50,529 INFO L434 NwaCegarLoop]: 21 mSDtfsCounter, 0 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 18:45:50,530 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 92 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 18:45:50,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2024-09-20 18:45:50,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2024-09-20 18:45:50,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 46 states have (on average 1.0434782608695652) internal successors, (48), 47 states have internal predecessors, (48), 9 states have call successors, (9), 9 states have call predecessors, (9), 8 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2024-09-20 18:45:50,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 65 transitions. [2024-09-20 18:45:50,537 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 65 transitions. Word has length 60 [2024-09-20 18:45:50,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:45:50,537 INFO L474 AbstractCegarLoop]: Abstraction has 64 states and 65 transitions. [2024-09-20 18:45:50,537 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 18 states have internal predecessors, (31), 8 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-09-20 18:45:50,538 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:45:50,538 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 65 transitions. [2024-09-20 18:45:50,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-09-20 18:45:50,538 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:45:50,539 INFO L216 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:45:50,555 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-09-20 18:45:50,739 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-09-20 18:45:50,739 INFO L399 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:45:50,740 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:45:50,740 INFO L85 PathProgramCache]: Analyzing trace with hash 2019516247, now seen corresponding path program 12 times [2024-09-20 18:45:50,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:45:50,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811092363] [2024-09-20 18:45:50,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:45:50,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:45:50,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:50,893 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:45:50,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:50,895 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-09-20 18:45:50,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:50,898 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-09-20 18:45:50,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:50,900 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-20 18:45:50,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:50,902 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-20 18:45:50,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:50,905 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-09-20 18:45:50,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:50,907 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-20 18:45:50,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:50,909 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 33 proven. 64 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-20 18:45:50,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:45:50,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811092363] [2024-09-20 18:45:50,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811092363] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:45:50,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1230194965] [2024-09-20 18:45:50,910 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-20 18:45:50,910 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:45:50,910 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:45:50,912 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:45:50,917 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-09-20 18:45:50,964 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2024-09-20 18:45:50,964 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:45:50,965 INFO L262 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-09-20 18:45:50,967 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:45:51,034 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 40 proven. 57 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-20 18:45:51,034 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:45:51,168 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 40 proven. 57 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-20 18:45:51,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1230194965] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:45:51,169 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:45:51,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 15 [2024-09-20 18:45:51,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453259186] [2024-09-20 18:45:51,169 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:45:51,170 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-09-20 18:45:51,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:45:51,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-09-20 18:45:51,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2024-09-20 18:45:51,171 INFO L87 Difference]: Start difference. First operand 64 states and 65 transitions. Second operand has 15 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 13 states have internal predecessors, (34), 8 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-09-20 18:45:51,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:45:51,245 INFO L93 Difference]: Finished difference Result 77 states and 79 transitions. [2024-09-20 18:45:51,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-09-20 18:45:51,246 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 13 states have internal predecessors, (34), 8 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Word has length 61 [2024-09-20 18:45:51,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:45:51,247 INFO L225 Difference]: With dead ends: 77 [2024-09-20 18:45:51,247 INFO L226 Difference]: Without dead ends: 75 [2024-09-20 18:45:51,247 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 126 SyntacticMatches, 14 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2024-09-20 18:45:51,248 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 18:45:51,248 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 76 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 18:45:51,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2024-09-20 18:45:51,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 71. [2024-09-20 18:45:51,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 51 states have (on average 1.0392156862745099) internal successors, (53), 52 states have internal predecessors, (53), 10 states have call successors, (10), 10 states have call predecessors, (10), 9 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2024-09-20 18:45:51,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 72 transitions. [2024-09-20 18:45:51,254 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 72 transitions. Word has length 61 [2024-09-20 18:45:51,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:45:51,255 INFO L474 AbstractCegarLoop]: Abstraction has 71 states and 72 transitions. [2024-09-20 18:45:51,255 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 13 states have internal predecessors, (34), 8 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-09-20 18:45:51,255 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:45:51,255 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 72 transitions. [2024-09-20 18:45:51,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-09-20 18:45:51,256 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:45:51,256 INFO L216 NwaCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:45:51,272 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-09-20 18:45:51,460 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-09-20 18:45:51,461 INFO L399 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:45:51,461 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:45:51,461 INFO L85 PathProgramCache]: Analyzing trace with hash -1248321171, now seen corresponding path program 13 times [2024-09-20 18:45:51,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:45:51,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276041631] [2024-09-20 18:45:51,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:45:51,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:45:51,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:51,687 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:45:51,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:51,689 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-09-20 18:45:51,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:51,691 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-09-20 18:45:51,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:51,693 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-20 18:45:51,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:51,695 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-20 18:45:51,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:51,697 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-09-20 18:45:51,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:51,699 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-20 18:45:51,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:51,702 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-09-20 18:45:51,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:51,704 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 91 proven. 28 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-09-20 18:45:51,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:45:51,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276041631] [2024-09-20 18:45:51,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276041631] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:45:51,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1187520133] [2024-09-20 18:45:51,705 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-20 18:45:51,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:45:51,705 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:45:51,707 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:45:51,708 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-09-20 18:45:51,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:51,756 INFO L262 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-09-20 18:45:51,758 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:45:51,812 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 91 proven. 28 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-09-20 18:45:51,813 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:45:52,006 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 91 proven. 28 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-09-20 18:45:52,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1187520133] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:45:52,007 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:45:52,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 20 [2024-09-20 18:45:52,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133388533] [2024-09-20 18:45:52,007 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:45:52,008 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-09-20 18:45:52,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:45:52,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-09-20 18:45:52,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2024-09-20 18:45:52,009 INFO L87 Difference]: Start difference. First operand 71 states and 72 transitions. Second operand has 20 states, 20 states have (on average 1.7) internal successors, (34), 20 states have internal predecessors, (34), 9 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-09-20 18:45:52,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:45:52,101 INFO L93 Difference]: Finished difference Result 104 states and 113 transitions. [2024-09-20 18:45:52,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-09-20 18:45:52,102 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.7) internal successors, (34), 20 states have internal predecessors, (34), 9 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Word has length 68 [2024-09-20 18:45:52,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:45:52,103 INFO L225 Difference]: With dead ends: 104 [2024-09-20 18:45:52,103 INFO L226 Difference]: Without dead ends: 72 [2024-09-20 18:45:52,104 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 136 SyntacticMatches, 16 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 235 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2024-09-20 18:45:52,104 INFO L434 NwaCegarLoop]: 23 mSDtfsCounter, 0 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 18:45:52,104 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 154 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 18:45:52,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2024-09-20 18:45:52,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2024-09-20 18:45:52,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 52 states have (on average 1.0384615384615385) internal successors, (54), 53 states have internal predecessors, (54), 10 states have call successors, (10), 10 states have call predecessors, (10), 9 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2024-09-20 18:45:52,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 73 transitions. [2024-09-20 18:45:52,117 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 73 transitions. Word has length 68 [2024-09-20 18:45:52,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:45:52,117 INFO L474 AbstractCegarLoop]: Abstraction has 72 states and 73 transitions. [2024-09-20 18:45:52,117 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.7) internal successors, (34), 20 states have internal predecessors, (34), 9 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-09-20 18:45:52,118 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:45:52,118 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 73 transitions. [2024-09-20 18:45:52,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-09-20 18:45:52,119 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:45:52,119 INFO L216 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:45:52,135 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-09-20 18:45:52,323 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-09-20 18:45:52,324 INFO L399 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:45:52,324 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:45:52,324 INFO L85 PathProgramCache]: Analyzing trace with hash -2046116359, now seen corresponding path program 14 times [2024-09-20 18:45:52,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:45:52,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010510937] [2024-09-20 18:45:52,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:45:52,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:45:52,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:52,522 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:45:52,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:52,524 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-20 18:45:52,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:52,526 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-20 18:45:52,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:52,528 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-09-20 18:45:52,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:52,532 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-20 18:45:52,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:52,534 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-09-20 18:45:52,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:52,536 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-20 18:45:52,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:52,539 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-09-20 18:45:52,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:52,541 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 42 proven. 85 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-09-20 18:45:52,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:45:52,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010510937] [2024-09-20 18:45:52,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010510937] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:45:52,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [788518411] [2024-09-20 18:45:52,542 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-20 18:45:52,542 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:45:52,543 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:45:52,544 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:45:52,546 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-09-20 18:45:52,596 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-20 18:45:52,597 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:45:52,598 INFO L262 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-09-20 18:45:52,599 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:45:52,676 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 50 proven. 77 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-09-20 18:45:52,676 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:45:52,852 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 50 proven. 77 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-09-20 18:45:52,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [788518411] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:45:52,852 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:45:52,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 16 [2024-09-20 18:45:52,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365955291] [2024-09-20 18:45:52,852 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:45:52,853 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-09-20 18:45:52,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:45:52,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-09-20 18:45:52,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2024-09-20 18:45:52,854 INFO L87 Difference]: Start difference. First operand 72 states and 73 transitions. Second operand has 16 states, 16 states have (on average 2.3125) internal successors, (37), 14 states have internal predecessors, (37), 9 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-09-20 18:45:52,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:45:52,939 INFO L93 Difference]: Finished difference Result 85 states and 87 transitions. [2024-09-20 18:45:52,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-09-20 18:45:52,940 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.3125) internal successors, (37), 14 states have internal predecessors, (37), 9 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Word has length 69 [2024-09-20 18:45:52,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:45:52,941 INFO L225 Difference]: With dead ends: 85 [2024-09-20 18:45:52,941 INFO L226 Difference]: Without dead ends: 83 [2024-09-20 18:45:52,942 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 141 SyntacticMatches, 18 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=74, Invalid=198, Unknown=0, NotChecked=0, Total=272 [2024-09-20 18:45:52,942 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 18:45:52,942 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 83 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 18:45:52,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2024-09-20 18:45:52,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 79. [2024-09-20 18:45:52,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 57 states have (on average 1.0350877192982457) internal successors, (59), 58 states have internal predecessors, (59), 11 states have call successors, (11), 11 states have call predecessors, (11), 10 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2024-09-20 18:45:52,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 80 transitions. [2024-09-20 18:45:52,949 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 80 transitions. Word has length 69 [2024-09-20 18:45:52,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:45:52,950 INFO L474 AbstractCegarLoop]: Abstraction has 79 states and 80 transitions. [2024-09-20 18:45:52,950 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.3125) internal successors, (37), 14 states have internal predecessors, (37), 9 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-09-20 18:45:52,950 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:45:52,950 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 80 transitions. [2024-09-20 18:45:52,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-09-20 18:45:52,951 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:45:52,951 INFO L216 NwaCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:45:52,967 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-09-20 18:45:53,155 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-09-20 18:45:53,156 INFO L399 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:45:53,156 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:45:53,156 INFO L85 PathProgramCache]: Analyzing trace with hash 1820682379, now seen corresponding path program 15 times [2024-09-20 18:45:53,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:45:53,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133114953] [2024-09-20 18:45:53,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:45:53,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:45:53,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:53,405 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:45:53,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:53,407 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-20 18:45:53,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:53,409 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-20 18:45:53,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:53,411 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-09-20 18:45:53,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:53,413 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-20 18:45:53,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:53,415 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-09-20 18:45:53,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:53,417 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-20 18:45:53,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:53,420 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-09-20 18:45:53,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:53,422 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-09-20 18:45:53,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:53,424 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 116 proven. 36 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-09-20 18:45:53,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:45:53,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133114953] [2024-09-20 18:45:53,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133114953] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:45:53,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [785360177] [2024-09-20 18:45:53,425 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-20 18:45:53,425 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:45:53,425 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:45:53,427 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:45:53,429 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-09-20 18:45:53,486 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2024-09-20 18:45:53,486 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:45:53,487 INFO L262 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-09-20 18:45:53,489 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:45:53,547 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 116 proven. 36 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-09-20 18:45:53,547 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:45:53,763 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 116 proven. 36 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-09-20 18:45:53,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [785360177] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:45:53,763 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:45:53,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 22 [2024-09-20 18:45:53,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857213752] [2024-09-20 18:45:53,764 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:45:53,764 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-09-20 18:45:53,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:45:53,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-09-20 18:45:53,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=340, Unknown=0, NotChecked=0, Total=462 [2024-09-20 18:45:53,765 INFO L87 Difference]: Start difference. First operand 79 states and 80 transitions. Second operand has 22 states, 22 states have (on average 1.6818181818181819) internal successors, (37), 22 states have internal predecessors, (37), 10 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-09-20 18:45:53,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:45:53,896 INFO L93 Difference]: Finished difference Result 115 states and 125 transitions. [2024-09-20 18:45:53,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-09-20 18:45:53,897 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.6818181818181819) internal successors, (37), 22 states have internal predecessors, (37), 10 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Word has length 76 [2024-09-20 18:45:53,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:45:53,898 INFO L225 Difference]: With dead ends: 115 [2024-09-20 18:45:53,898 INFO L226 Difference]: Without dead ends: 80 [2024-09-20 18:45:53,899 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 152 SyntacticMatches, 18 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 293 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=122, Invalid=340, Unknown=0, NotChecked=0, Total=462 [2024-09-20 18:45:53,900 INFO L434 NwaCegarLoop]: 25 mSDtfsCounter, 0 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 255 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 18:45:53,902 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 255 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 231 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 18:45:53,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2024-09-20 18:45:53,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2024-09-20 18:45:53,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 58 states have (on average 1.0344827586206897) internal successors, (60), 59 states have internal predecessors, (60), 11 states have call successors, (11), 11 states have call predecessors, (11), 10 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2024-09-20 18:45:53,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 81 transitions. [2024-09-20 18:45:53,909 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 81 transitions. Word has length 76 [2024-09-20 18:45:53,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:45:53,909 INFO L474 AbstractCegarLoop]: Abstraction has 80 states and 81 transitions. [2024-09-20 18:45:53,910 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.6818181818181819) internal successors, (37), 22 states have internal predecessors, (37), 10 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-09-20 18:45:53,910 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:45:53,910 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 81 transitions. [2024-09-20 18:45:53,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-09-20 18:45:53,910 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:45:53,911 INFO L216 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:45:53,928 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-09-20 18:45:54,115 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,17 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:45:54,116 INFO L399 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:45:54,116 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:45:54,116 INFO L85 PathProgramCache]: Analyzing trace with hash 1946728727, now seen corresponding path program 16 times [2024-09-20 18:45:54,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:45:54,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311048184] [2024-09-20 18:45:54,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:45:54,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:45:54,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:54,311 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:45:54,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:54,313 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-20 18:45:54,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:54,315 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-09-20 18:45:54,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:54,317 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-09-20 18:45:54,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:54,319 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-20 18:45:54,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:54,320 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-20 18:45:54,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:54,322 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-09-20 18:45:54,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:54,323 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-20 18:45:54,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:54,325 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-09-20 18:45:54,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:54,327 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 52 proven. 109 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-09-20 18:45:54,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:45:54,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311048184] [2024-09-20 18:45:54,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311048184] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:45:54,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [625203989] [2024-09-20 18:45:54,327 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-20 18:45:54,328 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:45:54,328 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:45:54,329 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:45:54,331 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-09-20 18:45:54,381 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-20 18:45:54,381 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:45:54,383 INFO L262 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-09-20 18:45:54,385 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:45:54,454 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 61 proven. 100 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-09-20 18:45:54,454 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:45:54,640 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 61 proven. 100 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-09-20 18:45:54,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [625203989] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:45:54,641 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:45:54,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 17 [2024-09-20 18:45:54,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716026531] [2024-09-20 18:45:54,642 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:45:54,643 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-09-20 18:45:54,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:45:54,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-09-20 18:45:54,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2024-09-20 18:45:54,644 INFO L87 Difference]: Start difference. First operand 80 states and 81 transitions. Second operand has 17 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 15 states have internal predecessors, (40), 10 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-09-20 18:45:54,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:45:54,746 INFO L93 Difference]: Finished difference Result 93 states and 95 transitions. [2024-09-20 18:45:54,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-09-20 18:45:54,746 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 15 states have internal predecessors, (40), 10 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Word has length 77 [2024-09-20 18:45:54,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:45:54,747 INFO L225 Difference]: With dead ends: 93 [2024-09-20 18:45:54,747 INFO L226 Difference]: Without dead ends: 91 [2024-09-20 18:45:54,748 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 160 SyntacticMatches, 18 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=85, Invalid=221, Unknown=0, NotChecked=0, Total=306 [2024-09-20 18:45:54,748 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 18:45:54,748 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 95 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 18:45:54,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2024-09-20 18:45:54,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 87. [2024-09-20 18:45:54,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 63 states have (on average 1.0317460317460319) internal successors, (65), 64 states have internal predecessors, (65), 12 states have call successors, (12), 12 states have call predecessors, (12), 11 states have return successors, (11), 10 states have call predecessors, (11), 11 states have call successors, (11) [2024-09-20 18:45:54,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 88 transitions. [2024-09-20 18:45:54,759 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 88 transitions. Word has length 77 [2024-09-20 18:45:54,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:45:54,759 INFO L474 AbstractCegarLoop]: Abstraction has 87 states and 88 transitions. [2024-09-20 18:45:54,760 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 15 states have internal predecessors, (40), 10 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-09-20 18:45:54,760 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:45:54,760 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 88 transitions. [2024-09-20 18:45:54,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-09-20 18:45:54,761 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:45:54,761 INFO L216 NwaCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:45:54,777 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-09-20 18:45:54,964 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:45:54,965 INFO L399 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:45:54,965 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:45:54,965 INFO L85 PathProgramCache]: Analyzing trace with hash 726290349, now seen corresponding path program 17 times [2024-09-20 18:45:54,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:45:54,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376238965] [2024-09-20 18:45:54,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:45:54,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:45:54,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:55,243 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:45:55,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:55,246 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-20 18:45:55,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:55,248 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-09-20 18:45:55,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:55,250 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-09-20 18:45:55,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:55,252 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-20 18:45:55,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:55,253 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-20 18:45:55,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:55,255 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-09-20 18:45:55,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:55,257 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-20 18:45:55,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:55,259 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-09-20 18:45:55,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:55,262 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-09-20 18:45:55,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:55,265 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 144 proven. 45 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-09-20 18:45:55,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:45:55,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376238965] [2024-09-20 18:45:55,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376238965] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:45:55,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [400554309] [2024-09-20 18:45:55,265 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-20 18:45:55,266 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:45:55,266 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:45:55,268 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:45:55,269 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-09-20 18:45:55,329 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2024-09-20 18:45:55,329 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:45:55,330 INFO L262 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-09-20 18:45:55,332 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:45:55,388 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 144 proven. 45 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-09-20 18:45:55,388 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:45:55,620 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 144 proven. 45 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-09-20 18:45:55,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [400554309] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:45:55,621 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:45:55,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 24 [2024-09-20 18:45:55,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769357250] [2024-09-20 18:45:55,621 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:45:55,622 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-09-20 18:45:55,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:45:55,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-09-20 18:45:55,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=407, Unknown=0, NotChecked=0, Total=552 [2024-09-20 18:45:55,623 INFO L87 Difference]: Start difference. First operand 87 states and 88 transitions. Second operand has 24 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 24 states have internal predecessors, (40), 11 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-09-20 18:45:55,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:45:55,709 INFO L93 Difference]: Finished difference Result 126 states and 137 transitions. [2024-09-20 18:45:55,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-09-20 18:45:55,710 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 24 states have internal predecessors, (40), 11 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Word has length 84 [2024-09-20 18:45:55,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:45:55,711 INFO L225 Difference]: With dead ends: 126 [2024-09-20 18:45:55,711 INFO L226 Difference]: Without dead ends: 88 [2024-09-20 18:45:55,712 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 168 SyntacticMatches, 20 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 357 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=145, Invalid=407, Unknown=0, NotChecked=0, Total=552 [2024-09-20 18:45:55,712 INFO L434 NwaCegarLoop]: 27 mSDtfsCounter, 0 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 18:45:55,712 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 124 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 18:45:55,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2024-09-20 18:45:55,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2024-09-20 18:45:55,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 64 states have (on average 1.03125) internal successors, (66), 65 states have internal predecessors, (66), 12 states have call successors, (12), 12 states have call predecessors, (12), 11 states have return successors, (11), 10 states have call predecessors, (11), 11 states have call successors, (11) [2024-09-20 18:45:55,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 89 transitions. [2024-09-20 18:45:55,720 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 89 transitions. Word has length 84 [2024-09-20 18:45:55,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:45:55,720 INFO L474 AbstractCegarLoop]: Abstraction has 88 states and 89 transitions. [2024-09-20 18:45:55,720 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 24 states have internal predecessors, (40), 11 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-09-20 18:45:55,720 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:45:55,720 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 89 transitions. [2024-09-20 18:45:55,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-09-20 18:45:55,721 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:45:55,721 INFO L216 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:45:55,738 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-09-20 18:45:55,925 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:45:55,926 INFO L399 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:45:55,926 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:45:55,926 INFO L85 PathProgramCache]: Analyzing trace with hash 2011845689, now seen corresponding path program 18 times [2024-09-20 18:45:55,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:45:55,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872546563] [2024-09-20 18:45:55,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:45:55,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:45:55,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:56,145 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:45:56,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:56,147 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-09-20 18:45:56,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:56,149 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-09-20 18:45:56,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:56,151 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-20 18:45:56,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:56,152 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-20 18:45:56,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:56,154 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-20 18:45:56,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:56,158 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-20 18:45:56,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:56,160 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-09-20 18:45:56,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:56,162 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-20 18:45:56,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:56,164 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-09-20 18:45:56,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:56,168 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 63 proven. 136 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-09-20 18:45:56,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:45:56,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872546563] [2024-09-20 18:45:56,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872546563] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:45:56,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [85342009] [2024-09-20 18:45:56,169 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-20 18:45:56,169 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:45:56,169 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:45:56,171 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:45:56,173 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-09-20 18:45:56,230 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2024-09-20 18:45:56,230 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:45:56,232 INFO L262 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-09-20 18:45:56,234 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:45:56,329 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 73 proven. 126 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-09-20 18:45:56,329 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:45:56,537 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 73 proven. 126 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-09-20 18:45:56,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [85342009] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:45:56,537 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:45:56,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 18 [2024-09-20 18:45:56,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874972998] [2024-09-20 18:45:56,537 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:45:56,538 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-09-20 18:45:56,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:45:56,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-09-20 18:45:56,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2024-09-20 18:45:56,539 INFO L87 Difference]: Start difference. First operand 88 states and 89 transitions. Second operand has 18 states, 18 states have (on average 2.388888888888889) internal successors, (43), 16 states have internal predecessors, (43), 11 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-09-20 18:45:56,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:45:56,624 INFO L93 Difference]: Finished difference Result 101 states and 103 transitions. [2024-09-20 18:45:56,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-09-20 18:45:56,625 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.388888888888889) internal successors, (43), 16 states have internal predecessors, (43), 11 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Word has length 85 [2024-09-20 18:45:56,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:45:56,626 INFO L225 Difference]: With dead ends: 101 [2024-09-20 18:45:56,626 INFO L226 Difference]: Without dead ends: 99 [2024-09-20 18:45:56,626 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 177 SyntacticMatches, 20 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 214 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=97, Invalid=245, Unknown=0, NotChecked=0, Total=342 [2024-09-20 18:45:56,627 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 18:45:56,627 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 75 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 18:45:56,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2024-09-20 18:45:56,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 95. [2024-09-20 18:45:56,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 69 states have (on average 1.0289855072463767) internal successors, (71), 70 states have internal predecessors, (71), 13 states have call successors, (13), 13 states have call predecessors, (13), 12 states have return successors, (12), 11 states have call predecessors, (12), 12 states have call successors, (12) [2024-09-20 18:45:56,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 96 transitions. [2024-09-20 18:45:56,636 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 96 transitions. Word has length 85 [2024-09-20 18:45:56,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:45:56,637 INFO L474 AbstractCegarLoop]: Abstraction has 95 states and 96 transitions. [2024-09-20 18:45:56,637 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.388888888888889) internal successors, (43), 16 states have internal predecessors, (43), 11 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-09-20 18:45:56,638 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:45:56,638 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 96 transitions. [2024-09-20 18:45:56,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-09-20 18:45:56,639 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:45:56,639 INFO L216 NwaCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:45:56,654 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-09-20 18:45:56,842 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-09-20 18:45:56,843 INFO L399 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:45:56,843 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:45:56,843 INFO L85 PathProgramCache]: Analyzing trace with hash 1515997771, now seen corresponding path program 19 times [2024-09-20 18:45:56,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:45:56,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22126018] [2024-09-20 18:45:56,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:45:56,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:45:56,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:57,149 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:45:57,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:57,151 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-09-20 18:45:57,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:57,152 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-09-20 18:45:57,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:57,154 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-20 18:45:57,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:57,157 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-20 18:45:57,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:57,159 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-20 18:45:57,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:57,162 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-20 18:45:57,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:57,163 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-09-20 18:45:57,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:57,165 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-20 18:45:57,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:57,166 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-09-20 18:45:57,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:57,168 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-09-20 18:45:57,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:57,170 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 175 proven. 55 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-09-20 18:45:57,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:45:57,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22126018] [2024-09-20 18:45:57,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22126018] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:45:57,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1509046324] [2024-09-20 18:45:57,171 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-20 18:45:57,171 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:45:57,171 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:45:57,172 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:45:57,174 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-09-20 18:45:57,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:57,233 INFO L262 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-09-20 18:45:57,235 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:45:57,294 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 175 proven. 55 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-09-20 18:45:57,295 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:45:57,522 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 175 proven. 55 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-09-20 18:45:57,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1509046324] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:45:57,522 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:45:57,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 26 [2024-09-20 18:45:57,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350065638] [2024-09-20 18:45:57,523 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:45:57,523 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-09-20 18:45:57,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:45:57,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-09-20 18:45:57,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=480, Unknown=0, NotChecked=0, Total=650 [2024-09-20 18:45:57,524 INFO L87 Difference]: Start difference. First operand 95 states and 96 transitions. Second operand has 26 states, 26 states have (on average 1.6538461538461537) internal successors, (43), 26 states have internal predecessors, (43), 12 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-09-20 18:45:57,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:45:57,619 INFO L93 Difference]: Finished difference Result 137 states and 149 transitions. [2024-09-20 18:45:57,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-09-20 18:45:57,622 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.6538461538461537) internal successors, (43), 26 states have internal predecessors, (43), 12 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Word has length 92 [2024-09-20 18:45:57,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:45:57,623 INFO L225 Difference]: With dead ends: 137 [2024-09-20 18:45:57,623 INFO L226 Difference]: Without dead ends: 96 [2024-09-20 18:45:57,623 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 184 SyntacticMatches, 22 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 427 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=170, Invalid=480, Unknown=0, NotChecked=0, Total=650 [2024-09-20 18:45:57,624 INFO L434 NwaCegarLoop]: 29 mSDtfsCounter, 0 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 18:45:57,625 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 209 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 18:45:57,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2024-09-20 18:45:57,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2024-09-20 18:45:57,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 70 states have (on average 1.0285714285714285) internal successors, (72), 71 states have internal predecessors, (72), 13 states have call successors, (13), 13 states have call predecessors, (13), 12 states have return successors, (12), 11 states have call predecessors, (12), 12 states have call successors, (12) [2024-09-20 18:45:57,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 97 transitions. [2024-09-20 18:45:57,633 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 97 transitions. Word has length 92 [2024-09-20 18:45:57,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:45:57,634 INFO L474 AbstractCegarLoop]: Abstraction has 96 states and 97 transitions. [2024-09-20 18:45:57,634 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.6538461538461537) internal successors, (43), 26 states have internal predecessors, (43), 12 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-09-20 18:45:57,634 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:45:57,634 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 97 transitions. [2024-09-20 18:45:57,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-09-20 18:45:57,635 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:45:57,635 INFO L216 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:45:57,652 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-09-20 18:45:57,836 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-09-20 18:45:57,836 INFO L399 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:45:57,836 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:45:57,836 INFO L85 PathProgramCache]: Analyzing trace with hash 774177495, now seen corresponding path program 20 times [2024-09-20 18:45:57,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:45:57,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159857769] [2024-09-20 18:45:57,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:45:57,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:45:57,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:58,077 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:45:58,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:58,079 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-09-20 18:45:58,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:58,080 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-09-20 18:45:58,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:58,082 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-20 18:45:58,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:58,084 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-20 18:45:58,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:58,086 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-09-20 18:45:58,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:58,088 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-09-20 18:45:58,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:58,090 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-09-20 18:45:58,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:58,091 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-20 18:45:58,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:58,093 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-20 18:45:58,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:58,095 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-09-20 18:45:58,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:58,097 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 75 proven. 166 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-09-20 18:45:58,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:45:58,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159857769] [2024-09-20 18:45:58,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159857769] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:45:58,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [47914221] [2024-09-20 18:45:58,098 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-20 18:45:58,098 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:45:58,098 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:45:58,100 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:45:58,101 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-09-20 18:45:58,157 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-20 18:45:58,157 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:45:58,159 INFO L262 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-09-20 18:45:58,161 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:45:58,243 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 86 proven. 155 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-09-20 18:45:58,244 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:45:58,478 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 86 proven. 155 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-09-20 18:45:58,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [47914221] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:45:58,479 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:45:58,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 19 [2024-09-20 18:45:58,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611339977] [2024-09-20 18:45:58,479 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:45:58,480 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-09-20 18:45:58,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:45:58,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-09-20 18:45:58,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2024-09-20 18:45:58,481 INFO L87 Difference]: Start difference. First operand 96 states and 97 transitions. Second operand has 19 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 17 states have internal predecessors, (46), 12 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-09-20 18:45:58,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:45:58,576 INFO L93 Difference]: Finished difference Result 109 states and 111 transitions. [2024-09-20 18:45:58,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-09-20 18:45:58,577 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 17 states have internal predecessors, (46), 12 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Word has length 93 [2024-09-20 18:45:58,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:45:58,578 INFO L225 Difference]: With dead ends: 109 [2024-09-20 18:45:58,578 INFO L226 Difference]: Without dead ends: 107 [2024-09-20 18:45:58,578 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 192 SyntacticMatches, 24 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 271 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=110, Invalid=270, Unknown=0, NotChecked=0, Total=380 [2024-09-20 18:45:58,578 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 18:45:58,579 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 55 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 18:45:58,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2024-09-20 18:45:58,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 103. [2024-09-20 18:45:58,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 75 states have (on average 1.0266666666666666) internal successors, (77), 76 states have internal predecessors, (77), 14 states have call successors, (14), 14 states have call predecessors, (14), 13 states have return successors, (13), 12 states have call predecessors, (13), 13 states have call successors, (13) [2024-09-20 18:45:58,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 104 transitions. [2024-09-20 18:45:58,587 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 104 transitions. Word has length 93 [2024-09-20 18:45:58,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:45:58,587 INFO L474 AbstractCegarLoop]: Abstraction has 103 states and 104 transitions. [2024-09-20 18:45:58,587 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 17 states have internal predecessors, (46), 12 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-09-20 18:45:58,587 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:45:58,588 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 104 transitions. [2024-09-20 18:45:58,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-09-20 18:45:58,588 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:45:58,589 INFO L216 NwaCegarLoop]: trace histogram [12, 12, 12, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:45:58,602 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2024-09-20 18:45:58,789 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,22 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:45:58,789 INFO L399 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:45:58,789 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:45:58,790 INFO L85 PathProgramCache]: Analyzing trace with hash 945524205, now seen corresponding path program 21 times [2024-09-20 18:45:58,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:45:58,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969961784] [2024-09-20 18:45:58,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:45:58,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:45:58,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:59,103 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:45:59,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:59,105 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-09-20 18:45:59,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:59,107 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-09-20 18:45:59,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:59,108 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-20 18:45:59,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:59,109 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-20 18:45:59,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:59,111 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-09-20 18:45:59,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:59,113 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-09-20 18:45:59,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:59,114 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-09-20 18:45:59,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:59,116 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-20 18:45:59,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:59,117 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-20 18:45:59,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:59,119 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-09-20 18:45:59,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:59,120 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-09-20 18:45:59,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:59,122 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 209 proven. 66 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-09-20 18:45:59,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:45:59,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969961784] [2024-09-20 18:45:59,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969961784] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:45:59,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1663009728] [2024-09-20 18:45:59,123 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-20 18:45:59,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:45:59,123 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:45:59,125 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:45:59,127 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-09-20 18:45:59,187 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2024-09-20 18:45:59,187 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:45:59,189 INFO L262 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-09-20 18:45:59,190 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:45:59,255 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 209 proven. 66 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-09-20 18:45:59,255 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:45:59,518 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 209 proven. 66 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-09-20 18:45:59,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1663009728] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:45:59,518 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:45:59,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27, 27] total 28 [2024-09-20 18:45:59,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905343183] [2024-09-20 18:45:59,519 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:45:59,519 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-09-20 18:45:59,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:45:59,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-09-20 18:45:59,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=559, Unknown=0, NotChecked=0, Total=756 [2024-09-20 18:45:59,520 INFO L87 Difference]: Start difference. First operand 103 states and 104 transitions. Second operand has 28 states, 28 states have (on average 1.6428571428571428) internal successors, (46), 28 states have internal predecessors, (46), 13 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-09-20 18:45:59,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:45:59,634 INFO L93 Difference]: Finished difference Result 148 states and 161 transitions. [2024-09-20 18:45:59,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-09-20 18:45:59,634 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.6428571428571428) internal successors, (46), 28 states have internal predecessors, (46), 13 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Word has length 100 [2024-09-20 18:45:59,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:45:59,636 INFO L225 Difference]: With dead ends: 148 [2024-09-20 18:45:59,636 INFO L226 Difference]: Without dead ends: 104 [2024-09-20 18:45:59,637 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 200 SyntacticMatches, 24 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 503 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=197, Invalid=559, Unknown=0, NotChecked=0, Total=756 [2024-09-20 18:45:59,637 INFO L434 NwaCegarLoop]: 31 mSDtfsCounter, 0 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 18:45:59,637 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 232 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 18:45:59,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2024-09-20 18:45:59,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2024-09-20 18:45:59,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 76 states have (on average 1.0263157894736843) internal successors, (78), 77 states have internal predecessors, (78), 14 states have call successors, (14), 14 states have call predecessors, (14), 13 states have return successors, (13), 12 states have call predecessors, (13), 13 states have call successors, (13) [2024-09-20 18:45:59,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 105 transitions. [2024-09-20 18:45:59,649 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 105 transitions. Word has length 100 [2024-09-20 18:45:59,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:45:59,649 INFO L474 AbstractCegarLoop]: Abstraction has 104 states and 105 transitions. [2024-09-20 18:45:59,650 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.6428571428571428) internal successors, (46), 28 states have internal predecessors, (46), 13 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-09-20 18:45:59,650 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:45:59,650 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 105 transitions. [2024-09-20 18:45:59,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-09-20 18:45:59,651 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:45:59,651 INFO L216 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:45:59,664 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2024-09-20 18:45:59,853 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-09-20 18:45:59,854 INFO L399 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:45:59,854 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:45:59,854 INFO L85 PathProgramCache]: Analyzing trace with hash 156826233, now seen corresponding path program 22 times [2024-09-20 18:45:59,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:45:59,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891259801] [2024-09-20 18:45:59,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:45:59,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:45:59,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:00,115 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:46:00,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:00,117 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-09-20 18:46:00,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:00,119 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-20 18:46:00,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:00,120 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-20 18:46:00,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:00,121 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-09-20 18:46:00,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:00,124 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-09-20 18:46:00,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:00,127 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-20 18:46:00,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:00,129 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-20 18:46:00,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:00,131 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-20 18:46:00,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:00,133 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-09-20 18:46:00,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:00,134 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-09-20 18:46:00,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:00,136 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-09-20 18:46:00,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:00,139 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 88 proven. 199 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-09-20 18:46:00,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:46:00,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891259801] [2024-09-20 18:46:00,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891259801] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:46:00,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1253944933] [2024-09-20 18:46:00,139 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-20 18:46:00,140 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:46:00,140 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:46:00,141 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:46:00,143 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-09-20 18:46:00,201 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-20 18:46:00,202 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:46:00,203 INFO L262 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-09-20 18:46:00,205 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:46:00,288 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 100 proven. 187 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-09-20 18:46:00,289 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:46:00,534 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 100 proven. 187 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-09-20 18:46:00,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1253944933] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:46:00,534 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:46:00,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 20 [2024-09-20 18:46:00,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375396728] [2024-09-20 18:46:00,535 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:46:00,535 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-09-20 18:46:00,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:46:00,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-09-20 18:46:00,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=262, Unknown=0, NotChecked=0, Total=380 [2024-09-20 18:46:00,536 INFO L87 Difference]: Start difference. First operand 104 states and 105 transitions. Second operand has 20 states, 20 states have (on average 2.45) internal successors, (49), 18 states have internal predecessors, (49), 13 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-09-20 18:46:00,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:46:00,642 INFO L93 Difference]: Finished difference Result 117 states and 119 transitions. [2024-09-20 18:46:00,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-09-20 18:46:00,642 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.45) internal successors, (49), 18 states have internal predecessors, (49), 13 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Word has length 101 [2024-09-20 18:46:00,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:46:00,645 INFO L225 Difference]: With dead ends: 117 [2024-09-20 18:46:00,645 INFO L226 Difference]: Without dead ends: 115 [2024-09-20 18:46:00,645 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 211 SyntacticMatches, 24 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 282 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2024-09-20 18:46:00,646 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 18:46:00,646 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 91 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 18:46:00,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2024-09-20 18:46:00,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 111. [2024-09-20 18:46:00,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 81 states have (on average 1.0246913580246915) internal successors, (83), 82 states have internal predecessors, (83), 15 states have call successors, (15), 15 states have call predecessors, (15), 14 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2024-09-20 18:46:00,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 112 transitions. [2024-09-20 18:46:00,656 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 112 transitions. Word has length 101 [2024-09-20 18:46:00,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:46:00,656 INFO L474 AbstractCegarLoop]: Abstraction has 111 states and 112 transitions. [2024-09-20 18:46:00,657 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.45) internal successors, (49), 18 states have internal predecessors, (49), 13 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-09-20 18:46:00,657 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:46:00,657 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 112 transitions. [2024-09-20 18:46:00,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-09-20 18:46:00,661 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:46:00,661 INFO L216 NwaCegarLoop]: trace histogram [13, 13, 13, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:46:00,677 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-09-20 18:46:00,861 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-09-20 18:46:00,862 INFO L399 AbstractCegarLoop]: === Iteration 26 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:46:00,862 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:46:00,862 INFO L85 PathProgramCache]: Analyzing trace with hash -325968885, now seen corresponding path program 23 times [2024-09-20 18:46:00,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:46:00,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84055185] [2024-09-20 18:46:00,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:46:00,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:46:00,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:01,268 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:46:01,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:01,270 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-09-20 18:46:01,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:01,272 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-20 18:46:01,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:01,274 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-20 18:46:01,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:01,275 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-09-20 18:46:01,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:01,276 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-09-20 18:46:01,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:01,278 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-20 18:46:01,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:01,279 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-20 18:46:01,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:01,281 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-20 18:46:01,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:01,282 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-09-20 18:46:01,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:01,283 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-09-20 18:46:01,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:01,285 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-09-20 18:46:01,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:01,286 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-09-20 18:46:01,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:01,288 INFO L134 CoverageAnalysis]: Checked inductivity of 588 backedges. 246 proven. 78 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-09-20 18:46:01,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:46:01,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84055185] [2024-09-20 18:46:01,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84055185] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:46:01,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1146801057] [2024-09-20 18:46:01,289 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-20 18:46:01,289 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:46:01,289 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:46:01,291 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:46:01,292 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-09-20 18:46:01,365 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2024-09-20 18:46:01,365 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:46:01,367 INFO L262 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-09-20 18:46:01,368 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:46:01,437 INFO L134 CoverageAnalysis]: Checked inductivity of 588 backedges. 246 proven. 78 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-09-20 18:46:01,437 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:46:01,778 INFO L134 CoverageAnalysis]: Checked inductivity of 588 backedges. 246 proven. 78 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-09-20 18:46:01,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1146801057] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:46:01,778 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:46:01,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29, 29] total 30 [2024-09-20 18:46:01,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237482743] [2024-09-20 18:46:01,778 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:46:01,778 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-09-20 18:46:01,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:46:01,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-09-20 18:46:01,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=226, Invalid=644, Unknown=0, NotChecked=0, Total=870 [2024-09-20 18:46:01,780 INFO L87 Difference]: Start difference. First operand 111 states and 112 transitions. Second operand has 30 states, 30 states have (on average 1.6333333333333333) internal successors, (49), 30 states have internal predecessors, (49), 14 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-09-20 18:46:01,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:46:01,904 INFO L93 Difference]: Finished difference Result 159 states and 173 transitions. [2024-09-20 18:46:01,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-09-20 18:46:01,905 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 1.6333333333333333) internal successors, (49), 30 states have internal predecessors, (49), 14 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Word has length 108 [2024-09-20 18:46:01,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:46:01,906 INFO L225 Difference]: With dead ends: 159 [2024-09-20 18:46:01,906 INFO L226 Difference]: Without dead ends: 112 [2024-09-20 18:46:01,907 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 216 SyntacticMatches, 26 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 585 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=226, Invalid=644, Unknown=0, NotChecked=0, Total=870 [2024-09-20 18:46:01,908 INFO L434 NwaCegarLoop]: 33 mSDtfsCounter, 0 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 18:46:01,908 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 193 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 18:46:01,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2024-09-20 18:46:01,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2024-09-20 18:46:01,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 82 states have (on average 1.024390243902439) internal successors, (84), 83 states have internal predecessors, (84), 15 states have call successors, (15), 15 states have call predecessors, (15), 14 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2024-09-20 18:46:01,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 113 transitions. [2024-09-20 18:46:01,918 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 113 transitions. Word has length 108 [2024-09-20 18:46:01,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:46:01,918 INFO L474 AbstractCegarLoop]: Abstraction has 112 states and 113 transitions. [2024-09-20 18:46:01,918 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 1.6333333333333333) internal successors, (49), 30 states have internal predecessors, (49), 14 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-09-20 18:46:01,919 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:46:01,919 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 113 transitions. [2024-09-20 18:46:01,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2024-09-20 18:46:01,919 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:46:01,920 INFO L216 NwaCegarLoop]: trace histogram [13, 13, 13, 13, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:46:01,934 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2024-09-20 18:46:02,120 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-09-20 18:46:02,120 INFO L399 AbstractCegarLoop]: === Iteration 27 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:46:02,121 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:46:02,121 INFO L85 PathProgramCache]: Analyzing trace with hash 1691368599, now seen corresponding path program 24 times [2024-09-20 18:46:02,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:46:02,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746837276] [2024-09-20 18:46:02,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:46:02,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:46:02,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:02,418 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:46:02,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:02,420 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-20 18:46:02,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:02,421 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-20 18:46:02,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:02,422 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-09-20 18:46:02,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:02,423 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-20 18:46:02,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:02,425 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-09-20 18:46:02,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:02,426 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-20 18:46:02,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:02,428 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-20 18:46:02,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:02,429 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-09-20 18:46:02,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:02,431 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-09-20 18:46:02,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:02,432 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-09-20 18:46:02,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:02,434 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-09-20 18:46:02,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:02,435 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-09-20 18:46:02,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:02,437 INFO L134 CoverageAnalysis]: Checked inductivity of 601 backedges. 102 proven. 235 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-09-20 18:46:02,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:46:02,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746837276] [2024-09-20 18:46:02,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746837276] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:46:02,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1989588547] [2024-09-20 18:46:02,438 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-20 18:46:02,438 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:46:02,438 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:46:02,439 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:46:02,443 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-09-20 18:46:02,514 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2024-09-20 18:46:02,515 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:46:02,516 INFO L262 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-09-20 18:46:02,518 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:46:02,608 INFO L134 CoverageAnalysis]: Checked inductivity of 601 backedges. 115 proven. 222 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-09-20 18:46:02,608 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:46:02,829 INFO L134 CoverageAnalysis]: Checked inductivity of 601 backedges. 115 proven. 222 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-09-20 18:46:02,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1989588547] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:46:02,830 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:46:02,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 21 [2024-09-20 18:46:02,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057395432] [2024-09-20 18:46:02,830 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:46:02,830 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-09-20 18:46:02,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:46:02,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-09-20 18:46:02,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=287, Unknown=0, NotChecked=0, Total=420 [2024-09-20 18:46:02,831 INFO L87 Difference]: Start difference. First operand 112 states and 113 transitions. Second operand has 21 states, 21 states have (on average 2.4761904761904763) internal successors, (52), 19 states have internal predecessors, (52), 14 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-09-20 18:46:02,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:46:02,922 INFO L93 Difference]: Finished difference Result 125 states and 127 transitions. [2024-09-20 18:46:02,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-09-20 18:46:02,923 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.4761904761904763) internal successors, (52), 19 states have internal predecessors, (52), 14 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Word has length 109 [2024-09-20 18:46:02,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:46:02,924 INFO L225 Difference]: With dead ends: 125 [2024-09-20 18:46:02,924 INFO L226 Difference]: Without dead ends: 123 [2024-09-20 18:46:02,924 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 228 SyntacticMatches, 26 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 319 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=139, Invalid=323, Unknown=0, NotChecked=0, Total=462 [2024-09-20 18:46:02,924 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 18:46:02,925 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 78 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 18:46:02,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2024-09-20 18:46:02,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 119. [2024-09-20 18:46:02,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 87 states have (on average 1.0229885057471264) internal successors, (89), 88 states have internal predecessors, (89), 16 states have call successors, (16), 16 states have call predecessors, (16), 15 states have return successors, (15), 14 states have call predecessors, (15), 15 states have call successors, (15) [2024-09-20 18:46:02,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 120 transitions. [2024-09-20 18:46:02,934 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 120 transitions. Word has length 109 [2024-09-20 18:46:02,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:46:02,934 INFO L474 AbstractCegarLoop]: Abstraction has 119 states and 120 transitions. [2024-09-20 18:46:02,934 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.4761904761904763) internal successors, (52), 19 states have internal predecessors, (52), 14 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-09-20 18:46:02,935 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:46:02,935 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 120 transitions. [2024-09-20 18:46:02,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-09-20 18:46:02,936 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:46:02,936 INFO L216 NwaCegarLoop]: trace histogram [14, 14, 14, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:46:02,953 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2024-09-20 18:46:03,139 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-09-20 18:46:03,140 INFO L399 AbstractCegarLoop]: === Iteration 28 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:46:03,140 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:46:03,140 INFO L85 PathProgramCache]: Analyzing trace with hash 1194318893, now seen corresponding path program 25 times [2024-09-20 18:46:03,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:46:03,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085380407] [2024-09-20 18:46:03,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:46:03,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:46:03,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:03,582 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:46:03,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:03,584 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-20 18:46:03,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:03,585 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-20 18:46:03,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:03,586 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-09-20 18:46:03,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:03,588 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-20 18:46:03,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:03,589 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-09-20 18:46:03,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:03,591 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-20 18:46:03,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:03,592 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-20 18:46:03,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:03,594 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-09-20 18:46:03,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:03,595 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-09-20 18:46:03,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:03,597 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-09-20 18:46:03,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:03,598 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-09-20 18:46:03,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:03,600 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-09-20 18:46:03,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:03,602 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-20 18:46:03,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:03,604 INFO L134 CoverageAnalysis]: Checked inductivity of 689 backedges. 286 proven. 91 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-09-20 18:46:03,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:46:03,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085380407] [2024-09-20 18:46:03,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085380407] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:46:03,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [814292065] [2024-09-20 18:46:03,605 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-20 18:46:03,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:46:03,605 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:46:03,607 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:46:03,610 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-09-20 18:46:03,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:03,680 INFO L262 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-09-20 18:46:03,682 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:46:03,748 INFO L134 CoverageAnalysis]: Checked inductivity of 689 backedges. 286 proven. 91 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-09-20 18:46:03,748 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:46:04,086 INFO L134 CoverageAnalysis]: Checked inductivity of 689 backedges. 286 proven. 91 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-09-20 18:46:04,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [814292065] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:46:04,086 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:46:04,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31, 31] total 32 [2024-09-20 18:46:04,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084189465] [2024-09-20 18:46:04,086 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:46:04,086 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-09-20 18:46:04,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:46:04,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-09-20 18:46:04,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=257, Invalid=735, Unknown=0, NotChecked=0, Total=992 [2024-09-20 18:46:04,087 INFO L87 Difference]: Start difference. First operand 119 states and 120 transitions. Second operand has 32 states, 32 states have (on average 1.625) internal successors, (52), 32 states have internal predecessors, (52), 15 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2024-09-20 18:46:04,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:46:04,205 INFO L93 Difference]: Finished difference Result 170 states and 185 transitions. [2024-09-20 18:46:04,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-09-20 18:46:04,206 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 1.625) internal successors, (52), 32 states have internal predecessors, (52), 15 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) Word has length 116 [2024-09-20 18:46:04,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:46:04,207 INFO L225 Difference]: With dead ends: 170 [2024-09-20 18:46:04,207 INFO L226 Difference]: Without dead ends: 120 [2024-09-20 18:46:04,208 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 232 SyntacticMatches, 28 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 673 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=257, Invalid=735, Unknown=0, NotChecked=0, Total=992 [2024-09-20 18:46:04,208 INFO L434 NwaCegarLoop]: 35 mSDtfsCounter, 0 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 238 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 18:46:04,208 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 238 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 234 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 18:46:04,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2024-09-20 18:46:04,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2024-09-20 18:46:04,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 88 states have (on average 1.0227272727272727) internal successors, (90), 89 states have internal predecessors, (90), 16 states have call successors, (16), 16 states have call predecessors, (16), 15 states have return successors, (15), 14 states have call predecessors, (15), 15 states have call successors, (15) [2024-09-20 18:46:04,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 121 transitions. [2024-09-20 18:46:04,216 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 121 transitions. Word has length 116 [2024-09-20 18:46:04,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:46:04,216 INFO L474 AbstractCegarLoop]: Abstraction has 120 states and 121 transitions. [2024-09-20 18:46:04,216 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 1.625) internal successors, (52), 32 states have internal predecessors, (52), 15 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2024-09-20 18:46:04,217 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:46:04,217 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 121 transitions. [2024-09-20 18:46:04,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-09-20 18:46:04,217 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:46:04,218 INFO L216 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:46:04,233 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2024-09-20 18:46:04,418 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,27 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:46:04,418 INFO L399 AbstractCegarLoop]: === Iteration 29 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:46:04,418 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:46:04,419 INFO L85 PathProgramCache]: Analyzing trace with hash 1153085625, now seen corresponding path program 26 times [2024-09-20 18:46:04,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:46:04,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391998329] [2024-09-20 18:46:04,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:46:04,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:46:04,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:04,734 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:46:04,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:04,736 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-09-20 18:46:04,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:04,738 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-20 18:46:04,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:04,743 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-20 18:46:04,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:04,744 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-09-20 18:46:04,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:04,746 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-20 18:46:04,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:04,748 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-09-20 18:46:04,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:04,750 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-20 18:46:04,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:04,752 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-09-20 18:46:04,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:04,754 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-09-20 18:46:04,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:04,755 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-09-20 18:46:04,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:04,757 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-09-20 18:46:04,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:04,758 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-09-20 18:46:04,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:04,759 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-09-20 18:46:04,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:04,761 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 117 proven. 274 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-09-20 18:46:04,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:46:04,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391998329] [2024-09-20 18:46:04,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391998329] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:46:04,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [150190372] [2024-09-20 18:46:04,762 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-20 18:46:04,762 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:46:04,762 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:46:04,763 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:46:04,765 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-09-20 18:46:04,828 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-20 18:46:04,828 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:46:04,829 INFO L262 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-09-20 18:46:04,832 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:46:04,924 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 131 proven. 260 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-09-20 18:46:04,924 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:46:05,206 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 131 proven. 260 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-09-20 18:46:05,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [150190372] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:46:05,206 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:46:05,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 22 [2024-09-20 18:46:05,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674779980] [2024-09-20 18:46:05,206 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:46:05,207 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-09-20 18:46:05,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:46:05,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-09-20 18:46:05,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=313, Unknown=0, NotChecked=0, Total=462 [2024-09-20 18:46:05,207 INFO L87 Difference]: Start difference. First operand 120 states and 121 transitions. Second operand has 22 states, 22 states have (on average 2.5) internal successors, (55), 20 states have internal predecessors, (55), 15 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2024-09-20 18:46:05,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:46:05,320 INFO L93 Difference]: Finished difference Result 133 states and 135 transitions. [2024-09-20 18:46:05,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-09-20 18:46:05,321 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.5) internal successors, (55), 20 states have internal predecessors, (55), 15 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) Word has length 117 [2024-09-20 18:46:05,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:46:05,322 INFO L225 Difference]: With dead ends: 133 [2024-09-20 18:46:05,322 INFO L226 Difference]: Without dead ends: 131 [2024-09-20 18:46:05,322 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 243 SyntacticMatches, 30 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 388 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=155, Invalid=351, Unknown=0, NotChecked=0, Total=506 [2024-09-20 18:46:05,323 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 18:46:05,323 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 79 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 18:46:05,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2024-09-20 18:46:05,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 127. [2024-09-20 18:46:05,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 93 states have (on average 1.021505376344086) internal successors, (95), 94 states have internal predecessors, (95), 17 states have call successors, (17), 17 states have call predecessors, (17), 16 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) [2024-09-20 18:46:05,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 128 transitions. [2024-09-20 18:46:05,331 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 128 transitions. Word has length 117 [2024-09-20 18:46:05,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:46:05,332 INFO L474 AbstractCegarLoop]: Abstraction has 127 states and 128 transitions. [2024-09-20 18:46:05,332 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.5) internal successors, (55), 20 states have internal predecessors, (55), 15 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2024-09-20 18:46:05,332 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:46:05,332 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 128 transitions. [2024-09-20 18:46:05,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-09-20 18:46:05,333 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:46:05,333 INFO L216 NwaCegarLoop]: trace histogram [15, 15, 15, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:46:05,348 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2024-09-20 18:46:05,537 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-09-20 18:46:05,538 INFO L399 AbstractCegarLoop]: === Iteration 30 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:46:05,538 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:46:05,538 INFO L85 PathProgramCache]: Analyzing trace with hash 1614994891, now seen corresponding path program 27 times [2024-09-20 18:46:05,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:46:05,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899700433] [2024-09-20 18:46:05,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:46:05,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:46:05,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:05,981 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:46:05,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:05,983 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-09-20 18:46:05,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:05,985 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-20 18:46:05,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:05,986 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-20 18:46:05,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:05,987 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-09-20 18:46:05,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:05,988 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-20 18:46:05,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:05,990 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-09-20 18:46:05,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:05,991 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-20 18:46:05,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:05,992 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-09-20 18:46:05,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:05,994 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-09-20 18:46:05,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:05,995 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-09-20 18:46:05,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:05,996 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-09-20 18:46:05,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:05,997 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-09-20 18:46:05,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:05,999 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-09-20 18:46:05,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:06,000 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2024-09-20 18:46:06,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:06,002 INFO L134 CoverageAnalysis]: Checked inductivity of 798 backedges. 329 proven. 105 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-09-20 18:46:06,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:46:06,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899700433] [2024-09-20 18:46:06,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899700433] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:46:06,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [447219559] [2024-09-20 18:46:06,003 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-20 18:46:06,003 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:46:06,003 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:46:06,004 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:46:06,007 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-09-20 18:46:06,076 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2024-09-20 18:46:06,076 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:46:06,078 INFO L262 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-09-20 18:46:06,080 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:46:06,139 INFO L134 CoverageAnalysis]: Checked inductivity of 798 backedges. 329 proven. 105 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-09-20 18:46:06,139 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:46:06,498 INFO L134 CoverageAnalysis]: Checked inductivity of 798 backedges. 329 proven. 105 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-09-20 18:46:06,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [447219559] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:46:06,499 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:46:06,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33, 33] total 34 [2024-09-20 18:46:06,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729728162] [2024-09-20 18:46:06,499 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:46:06,499 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-09-20 18:46:06,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:46:06,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-09-20 18:46:06,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=290, Invalid=832, Unknown=0, NotChecked=0, Total=1122 [2024-09-20 18:46:06,500 INFO L87 Difference]: Start difference. First operand 127 states and 128 transitions. Second operand has 34 states, 34 states have (on average 1.6176470588235294) internal successors, (55), 34 states have internal predecessors, (55), 16 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-09-20 18:46:06,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:46:06,658 INFO L93 Difference]: Finished difference Result 181 states and 197 transitions. [2024-09-20 18:46:06,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-09-20 18:46:06,659 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.6176470588235294) internal successors, (55), 34 states have internal predecessors, (55), 16 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) Word has length 124 [2024-09-20 18:46:06,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:46:06,660 INFO L225 Difference]: With dead ends: 181 [2024-09-20 18:46:06,660 INFO L226 Difference]: Without dead ends: 128 [2024-09-20 18:46:06,661 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 248 SyntacticMatches, 30 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 767 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=290, Invalid=832, Unknown=0, NotChecked=0, Total=1122 [2024-09-20 18:46:06,661 INFO L434 NwaCegarLoop]: 37 mSDtfsCounter, 0 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 281 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 228 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 18:46:06,661 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 228 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 281 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 18:46:06,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2024-09-20 18:46:06,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2024-09-20 18:46:06,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 94 states have (on average 1.0212765957446808) internal successors, (96), 95 states have internal predecessors, (96), 17 states have call successors, (17), 17 states have call predecessors, (17), 16 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) [2024-09-20 18:46:06,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 129 transitions. [2024-09-20 18:46:06,672 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 129 transitions. Word has length 124 [2024-09-20 18:46:06,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:46:06,672 INFO L474 AbstractCegarLoop]: Abstraction has 128 states and 129 transitions. [2024-09-20 18:46:06,672 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 1.6176470588235294) internal successors, (55), 34 states have internal predecessors, (55), 16 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-09-20 18:46:06,672 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:46:06,672 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 129 transitions. [2024-09-20 18:46:06,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-09-20 18:46:06,673 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:46:06,673 INFO L216 NwaCegarLoop]: trace histogram [15, 15, 15, 15, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:46:06,690 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2024-09-20 18:46:06,874 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,29 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:46:06,874 INFO L399 AbstractCegarLoop]: === Iteration 31 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:46:06,874 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:46:06,875 INFO L85 PathProgramCache]: Analyzing trace with hash -182032809, now seen corresponding path program 28 times [2024-09-20 18:46:06,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:46:06,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896831372] [2024-09-20 18:46:06,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:46:06,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:46:06,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:07,211 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:46:07,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:07,212 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-20 18:46:07,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:07,214 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-09-20 18:46:07,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:07,215 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-20 18:46:07,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:07,216 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-09-20 18:46:07,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:07,218 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-20 18:46:07,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:07,220 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-09-20 18:46:07,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:07,221 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-09-20 18:46:07,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:07,223 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-09-20 18:46:07,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:07,224 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-09-20 18:46:07,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:07,225 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-09-20 18:46:07,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:07,229 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-09-20 18:46:07,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:07,231 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2024-09-20 18:46:07,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:07,232 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-09-20 18:46:07,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:07,233 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2024-09-20 18:46:07,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:07,246 INFO L134 CoverageAnalysis]: Checked inductivity of 813 backedges. 133 proven. 316 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-09-20 18:46:07,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:46:07,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896831372] [2024-09-20 18:46:07,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896831372] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:46:07,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1534555435] [2024-09-20 18:46:07,247 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-20 18:46:07,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:46:07,247 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:46:07,249 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:46:07,250 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-09-20 18:46:07,313 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-20 18:46:07,314 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:46:07,315 INFO L262 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-09-20 18:46:07,316 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:46:07,427 INFO L134 CoverageAnalysis]: Checked inductivity of 813 backedges. 148 proven. 301 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-09-20 18:46:07,427 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:46:07,763 INFO L134 CoverageAnalysis]: Checked inductivity of 813 backedges. 148 proven. 301 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-09-20 18:46:07,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1534555435] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:46:07,763 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:46:07,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 23 [2024-09-20 18:46:07,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067992971] [2024-09-20 18:46:07,764 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:46:07,764 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-09-20 18:46:07,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:46:07,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-09-20 18:46:07,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=340, Unknown=0, NotChecked=0, Total=506 [2024-09-20 18:46:07,765 INFO L87 Difference]: Start difference. First operand 128 states and 129 transitions. Second operand has 23 states, 23 states have (on average 2.5217391304347827) internal successors, (58), 21 states have internal predecessors, (58), 16 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-09-20 18:46:07,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:46:07,860 INFO L93 Difference]: Finished difference Result 141 states and 143 transitions. [2024-09-20 18:46:07,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-09-20 18:46:07,861 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.5217391304347827) internal successors, (58), 21 states have internal predecessors, (58), 16 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) Word has length 125 [2024-09-20 18:46:07,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:46:07,862 INFO L225 Difference]: With dead ends: 141 [2024-09-20 18:46:07,862 INFO L226 Difference]: Without dead ends: 139 [2024-09-20 18:46:07,862 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 260 SyntacticMatches, 32 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 431 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=172, Invalid=380, Unknown=0, NotChecked=0, Total=552 [2024-09-20 18:46:07,863 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 18:46:07,863 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 87 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 18:46:07,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2024-09-20 18:46:07,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 135. [2024-09-20 18:46:07,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 99 states have (on average 1.02020202020202) internal successors, (101), 100 states have internal predecessors, (101), 18 states have call successors, (18), 18 states have call predecessors, (18), 17 states have return successors, (17), 16 states have call predecessors, (17), 17 states have call successors, (17) [2024-09-20 18:46:07,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 136 transitions. [2024-09-20 18:46:07,873 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 136 transitions. Word has length 125 [2024-09-20 18:46:07,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:46:07,873 INFO L474 AbstractCegarLoop]: Abstraction has 135 states and 136 transitions. [2024-09-20 18:46:07,873 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.5217391304347827) internal successors, (58), 21 states have internal predecessors, (58), 16 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-09-20 18:46:07,873 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:46:07,873 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 136 transitions. [2024-09-20 18:46:07,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2024-09-20 18:46:07,874 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:46:07,874 INFO L216 NwaCegarLoop]: trace histogram [16, 16, 16, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:46:07,888 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2024-09-20 18:46:08,074 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,30 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:46:08,075 INFO L399 AbstractCegarLoop]: === Iteration 32 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:46:08,075 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:46:08,075 INFO L85 PathProgramCache]: Analyzing trace with hash -1020577171, now seen corresponding path program 29 times [2024-09-20 18:46:08,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:46:08,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126925763] [2024-09-20 18:46:08,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:46:08,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:46:08,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:08,542 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:46:08,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:08,543 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-20 18:46:08,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:08,544 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-09-20 18:46:08,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:08,546 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-20 18:46:08,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:08,547 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-09-20 18:46:08,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:08,548 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-20 18:46:08,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:08,550 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-09-20 18:46:08,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:08,551 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-09-20 18:46:08,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:08,552 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-09-20 18:46:08,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:08,553 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-09-20 18:46:08,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:08,554 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-09-20 18:46:08,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:08,555 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-09-20 18:46:08,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:08,556 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2024-09-20 18:46:08,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:08,557 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-09-20 18:46:08,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:08,559 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2024-09-20 18:46:08,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:08,560 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-09-20 18:46:08,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:08,562 INFO L134 CoverageAnalysis]: Checked inductivity of 915 backedges. 375 proven. 120 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-09-20 18:46:08,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:46:08,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126925763] [2024-09-20 18:46:08,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126925763] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:46:08,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [275034430] [2024-09-20 18:46:08,563 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-20 18:46:08,563 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:46:08,563 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:46:08,568 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:46:08,571 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-09-20 18:46:08,654 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2024-09-20 18:46:08,654 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:46:08,656 INFO L262 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-09-20 18:46:08,673 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:46:08,768 INFO L134 CoverageAnalysis]: Checked inductivity of 915 backedges. 375 proven. 120 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-09-20 18:46:08,771 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:46:09,170 INFO L134 CoverageAnalysis]: Checked inductivity of 915 backedges. 375 proven. 120 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-09-20 18:46:09,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [275034430] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:46:09,170 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:46:09,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35, 35] total 36 [2024-09-20 18:46:09,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026282227] [2024-09-20 18:46:09,170 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:46:09,171 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-09-20 18:46:09,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:46:09,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-09-20 18:46:09,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=325, Invalid=935, Unknown=0, NotChecked=0, Total=1260 [2024-09-20 18:46:09,172 INFO L87 Difference]: Start difference. First operand 135 states and 136 transitions. Second operand has 36 states, 36 states have (on average 1.6111111111111112) internal successors, (58), 36 states have internal predecessors, (58), 17 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-09-20 18:46:09,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:46:09,316 INFO L93 Difference]: Finished difference Result 192 states and 209 transitions. [2024-09-20 18:46:09,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-09-20 18:46:09,317 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 1.6111111111111112) internal successors, (58), 36 states have internal predecessors, (58), 17 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Word has length 132 [2024-09-20 18:46:09,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:46:09,318 INFO L225 Difference]: With dead ends: 192 [2024-09-20 18:46:09,318 INFO L226 Difference]: Without dead ends: 136 [2024-09-20 18:46:09,319 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 264 SyntacticMatches, 32 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 867 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=325, Invalid=935, Unknown=0, NotChecked=0, Total=1260 [2024-09-20 18:46:09,319 INFO L434 NwaCegarLoop]: 39 mSDtfsCounter, 0 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 282 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 240 SdHoareTripleChecker+Invalid, 282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 18:46:09,319 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 240 Invalid, 282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 282 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 18:46:09,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2024-09-20 18:46:09,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2024-09-20 18:46:09,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 100 states have (on average 1.02) internal successors, (102), 101 states have internal predecessors, (102), 18 states have call successors, (18), 18 states have call predecessors, (18), 17 states have return successors, (17), 16 states have call predecessors, (17), 17 states have call successors, (17) [2024-09-20 18:46:09,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 137 transitions. [2024-09-20 18:46:09,331 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 137 transitions. Word has length 132 [2024-09-20 18:46:09,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:46:09,331 INFO L474 AbstractCegarLoop]: Abstraction has 136 states and 137 transitions. [2024-09-20 18:46:09,332 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 1.6111111111111112) internal successors, (58), 36 states have internal predecessors, (58), 17 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-09-20 18:46:09,332 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:46:09,332 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 137 transitions. [2024-09-20 18:46:09,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2024-09-20 18:46:09,333 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:46:09,333 INFO L216 NwaCegarLoop]: trace histogram [16, 16, 16, 16, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:46:09,350 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2024-09-20 18:46:09,537 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2024-09-20 18:46:09,538 INFO L399 AbstractCegarLoop]: === Iteration 33 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:46:09,538 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:46:09,538 INFO L85 PathProgramCache]: Analyzing trace with hash 896759545, now seen corresponding path program 30 times [2024-09-20 18:46:09,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:46:09,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132751638] [2024-09-20 18:46:09,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:46:09,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:46:09,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:09,818 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:46:09,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:09,819 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-09-20 18:46:09,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:09,820 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-09-20 18:46:09,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:09,821 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-20 18:46:09,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:09,822 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-20 18:46:09,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:09,823 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-09-20 18:46:09,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:09,824 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-20 18:46:09,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:09,825 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-09-20 18:46:09,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:09,826 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-09-20 18:46:09,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:09,827 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-09-20 18:46:09,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:09,828 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-20 18:46:09,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:09,829 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-09-20 18:46:09,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:09,830 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-09-20 18:46:09,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:09,831 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2024-09-20 18:46:09,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:09,833 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-09-20 18:46:09,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:09,834 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2024-09-20 18:46:09,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:09,836 INFO L134 CoverageAnalysis]: Checked inductivity of 931 backedges. 150 proven. 361 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-09-20 18:46:09,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:46:09,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132751638] [2024-09-20 18:46:09,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1132751638] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:46:09,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1265915961] [2024-09-20 18:46:09,836 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-20 18:46:09,836 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:46:09,836 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:46:09,838 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:46:09,840 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2024-09-20 18:46:09,920 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 16 check-sat command(s) [2024-09-20 18:46:09,920 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:46:09,922 INFO L262 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-09-20 18:46:09,924 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:46:10,025 INFO L134 CoverageAnalysis]: Checked inductivity of 931 backedges. 166 proven. 345 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-09-20 18:46:10,025 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:46:10,357 INFO L134 CoverageAnalysis]: Checked inductivity of 931 backedges. 166 proven. 345 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-09-20 18:46:10,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1265915961] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:46:10,357 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:46:10,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 24 [2024-09-20 18:46:10,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477991937] [2024-09-20 18:46:10,358 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:46:10,358 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-09-20 18:46:10,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:46:10,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-09-20 18:46:10,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=184, Invalid=368, Unknown=0, NotChecked=0, Total=552 [2024-09-20 18:46:10,359 INFO L87 Difference]: Start difference. First operand 136 states and 137 transitions. Second operand has 24 states, 24 states have (on average 2.5416666666666665) internal successors, (61), 22 states have internal predecessors, (61), 17 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-09-20 18:46:10,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:46:10,485 INFO L93 Difference]: Finished difference Result 149 states and 151 transitions. [2024-09-20 18:46:10,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-09-20 18:46:10,485 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.5416666666666665) internal successors, (61), 22 states have internal predecessors, (61), 17 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Word has length 133 [2024-09-20 18:46:10,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:46:10,487 INFO L225 Difference]: With dead ends: 149 [2024-09-20 18:46:10,487 INFO L226 Difference]: Without dead ends: 147 [2024-09-20 18:46:10,487 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 334 GetRequests, 279 SyntacticMatches, 32 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 442 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=190, Invalid=410, Unknown=0, NotChecked=0, Total=600 [2024-09-20 18:46:10,488 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 18:46:10,488 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 92 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 18:46:10,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2024-09-20 18:46:10,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 143. [2024-09-20 18:46:10,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 105 states have (on average 1.019047619047619) internal successors, (107), 106 states have internal predecessors, (107), 19 states have call successors, (19), 19 states have call predecessors, (19), 18 states have return successors, (18), 17 states have call predecessors, (18), 18 states have call successors, (18) [2024-09-20 18:46:10,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 144 transitions. [2024-09-20 18:46:10,502 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 144 transitions. Word has length 133 [2024-09-20 18:46:10,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:46:10,502 INFO L474 AbstractCegarLoop]: Abstraction has 143 states and 144 transitions. [2024-09-20 18:46:10,502 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.5416666666666665) internal successors, (61), 22 states have internal predecessors, (61), 17 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-09-20 18:46:10,502 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:46:10,502 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 144 transitions. [2024-09-20 18:46:10,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2024-09-20 18:46:10,504 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:46:10,504 INFO L216 NwaCegarLoop]: trace histogram [17, 17, 17, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:46:10,520 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2024-09-20 18:46:10,704 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,32 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:46:10,704 INFO L399 AbstractCegarLoop]: === Iteration 34 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:46:10,705 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:46:10,705 INFO L85 PathProgramCache]: Analyzing trace with hash -779448437, now seen corresponding path program 31 times [2024-09-20 18:46:10,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:46:10,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194217910] [2024-09-20 18:46:10,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:46:10,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:46:10,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:11,193 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:46:11,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:11,195 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-09-20 18:46:11,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:11,196 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-09-20 18:46:11,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:11,197 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-20 18:46:11,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:11,198 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-20 18:46:11,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:11,199 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-09-20 18:46:11,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:11,200 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-20 18:46:11,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:11,201 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-09-20 18:46:11,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:11,202 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-09-20 18:46:11,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:11,203 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-09-20 18:46:11,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:11,204 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-20 18:46:11,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:11,205 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-09-20 18:46:11,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:11,206 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-09-20 18:46:11,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:11,207 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2024-09-20 18:46:11,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:11,208 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-09-20 18:46:11,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:11,209 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2024-09-20 18:46:11,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:11,211 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2024-09-20 18:46:11,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:11,212 INFO L134 CoverageAnalysis]: Checked inductivity of 1040 backedges. 424 proven. 136 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-09-20 18:46:11,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:46:11,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194217910] [2024-09-20 18:46:11,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194217910] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:46:11,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [952042353] [2024-09-20 18:46:11,213 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-20 18:46:11,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:46:11,213 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:46:11,214 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:46:11,215 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2024-09-20 18:46:11,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:11,275 INFO L262 TraceCheckSpWp]: Trace formula consists of 347 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-09-20 18:46:11,277 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:46:11,357 INFO L134 CoverageAnalysis]: Checked inductivity of 1040 backedges. 424 proven. 136 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-09-20 18:46:11,358 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:46:11,761 INFO L134 CoverageAnalysis]: Checked inductivity of 1040 backedges. 424 proven. 136 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-09-20 18:46:11,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [952042353] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:46:11,762 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:46:11,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37, 37] total 38 [2024-09-20 18:46:11,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591051636] [2024-09-20 18:46:11,763 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:46:11,763 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-09-20 18:46:11,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:46:11,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-09-20 18:46:11,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=362, Invalid=1044, Unknown=0, NotChecked=0, Total=1406 [2024-09-20 18:46:11,764 INFO L87 Difference]: Start difference. First operand 143 states and 144 transitions. Second operand has 38 states, 38 states have (on average 1.605263157894737) internal successors, (61), 38 states have internal predecessors, (61), 18 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2024-09-20 18:46:11,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:46:11,967 INFO L93 Difference]: Finished difference Result 203 states and 221 transitions. [2024-09-20 18:46:11,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-09-20 18:46:11,968 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 1.605263157894737) internal successors, (61), 38 states have internal predecessors, (61), 18 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) Word has length 140 [2024-09-20 18:46:11,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:46:11,969 INFO L225 Difference]: With dead ends: 203 [2024-09-20 18:46:11,969 INFO L226 Difference]: Without dead ends: 144 [2024-09-20 18:46:11,970 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 350 GetRequests, 280 SyntacticMatches, 34 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 973 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=362, Invalid=1044, Unknown=0, NotChecked=0, Total=1406 [2024-09-20 18:46:11,970 INFO L434 NwaCegarLoop]: 41 mSDtfsCounter, 0 mSDsluCounter, 511 mSDsCounter, 0 mSdLazyCounter, 560 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 552 SdHoareTripleChecker+Invalid, 560 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 560 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-20 18:46:11,970 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 552 Invalid, 560 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 560 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-20 18:46:11,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2024-09-20 18:46:11,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2024-09-20 18:46:11,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 106 states have (on average 1.0188679245283019) internal successors, (108), 107 states have internal predecessors, (108), 19 states have call successors, (19), 19 states have call predecessors, (19), 18 states have return successors, (18), 17 states have call predecessors, (18), 18 states have call successors, (18) [2024-09-20 18:46:11,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 145 transitions. [2024-09-20 18:46:11,981 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 145 transitions. Word has length 140 [2024-09-20 18:46:11,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:46:11,981 INFO L474 AbstractCegarLoop]: Abstraction has 144 states and 145 transitions. [2024-09-20 18:46:11,981 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 1.605263157894737) internal successors, (61), 38 states have internal predecessors, (61), 18 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2024-09-20 18:46:11,981 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:46:11,982 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 145 transitions. [2024-09-20 18:46:11,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2024-09-20 18:46:11,982 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:46:11,982 INFO L216 NwaCegarLoop]: trace histogram [17, 17, 17, 17, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:46:11,998 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2024-09-20 18:46:12,183 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2024-09-20 18:46:12,183 INFO L399 AbstractCegarLoop]: === Iteration 35 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:46:12,183 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:46:12,183 INFO L85 PathProgramCache]: Analyzing trace with hash -1690075113, now seen corresponding path program 32 times [2024-09-20 18:46:12,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:46:12,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838843880] [2024-09-20 18:46:12,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:46:12,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:46:12,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:12,492 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:46:12,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:12,493 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-09-20 18:46:12,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:12,494 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-20 18:46:12,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:12,495 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-20 18:46:12,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:12,496 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-20 18:46:12,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:12,497 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-20 18:46:12,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:12,498 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-09-20 18:46:12,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:12,499 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-20 18:46:12,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:12,500 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-09-20 18:46:12,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:12,501 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-09-20 18:46:12,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:12,502 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-09-20 18:46:12,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:12,502 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-20 18:46:12,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:12,503 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-09-20 18:46:12,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:12,504 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-09-20 18:46:12,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:12,505 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2024-09-20 18:46:12,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:12,506 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-09-20 18:46:12,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:12,508 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2024-09-20 18:46:12,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:12,509 INFO L134 CoverageAnalysis]: Checked inductivity of 1057 backedges. 168 proven. 409 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-09-20 18:46:12,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:46:12,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838843880] [2024-09-20 18:46:12,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [838843880] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:46:12,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [669588934] [2024-09-20 18:46:12,510 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-20 18:46:12,510 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:46:12,510 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:46:12,511 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:46:12,512 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2024-09-20 18:46:12,571 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-20 18:46:12,572 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:46:12,573 INFO L262 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-09-20 18:46:12,575 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:46:12,666 INFO L134 CoverageAnalysis]: Checked inductivity of 1057 backedges. 185 proven. 392 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-09-20 18:46:12,666 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:46:13,043 INFO L134 CoverageAnalysis]: Checked inductivity of 1057 backedges. 185 proven. 392 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-09-20 18:46:13,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [669588934] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:46:13,043 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:46:13,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 25 [2024-09-20 18:46:13,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344213002] [2024-09-20 18:46:13,044 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:46:13,044 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-09-20 18:46:13,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:46:13,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-09-20 18:46:13,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=397, Unknown=0, NotChecked=0, Total=600 [2024-09-20 18:46:13,045 INFO L87 Difference]: Start difference. First operand 144 states and 145 transitions. Second operand has 25 states, 25 states have (on average 2.56) internal successors, (64), 23 states have internal predecessors, (64), 18 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2024-09-20 18:46:13,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:46:13,155 INFO L93 Difference]: Finished difference Result 157 states and 159 transitions. [2024-09-20 18:46:13,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-09-20 18:46:13,156 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.56) internal successors, (64), 23 states have internal predecessors, (64), 18 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) Word has length 141 [2024-09-20 18:46:13,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:46:13,157 INFO L225 Difference]: With dead ends: 157 [2024-09-20 18:46:13,157 INFO L226 Difference]: Without dead ends: 155 [2024-09-20 18:46:13,157 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 294 SyntacticMatches, 36 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 523 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=209, Invalid=441, Unknown=0, NotChecked=0, Total=650 [2024-09-20 18:46:13,158 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 221 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 18:46:13,158 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 103 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 221 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 18:46:13,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2024-09-20 18:46:13,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 151. [2024-09-20 18:46:13,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 111 states have (on average 1.018018018018018) internal successors, (113), 112 states have internal predecessors, (113), 20 states have call successors, (20), 20 states have call predecessors, (20), 19 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2024-09-20 18:46:13,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 152 transitions. [2024-09-20 18:46:13,169 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 152 transitions. Word has length 141 [2024-09-20 18:46:13,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:46:13,169 INFO L474 AbstractCegarLoop]: Abstraction has 151 states and 152 transitions. [2024-09-20 18:46:13,169 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.56) internal successors, (64), 23 states have internal predecessors, (64), 18 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2024-09-20 18:46:13,169 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:46:13,170 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 152 transitions. [2024-09-20 18:46:13,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2024-09-20 18:46:13,170 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:46:13,170 INFO L216 NwaCegarLoop]: trace histogram [18, 18, 18, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:46:13,186 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2024-09-20 18:46:13,371 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2024-09-20 18:46:13,371 INFO L399 AbstractCegarLoop]: === Iteration 36 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:46:13,371 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:46:13,371 INFO L85 PathProgramCache]: Analyzing trace with hash 1488038061, now seen corresponding path program 33 times [2024-09-20 18:46:13,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:46:13,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669531681] [2024-09-20 18:46:13,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:46:13,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:46:13,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:13,965 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:46:13,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:13,967 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-09-20 18:46:13,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:13,968 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-20 18:46:13,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:13,968 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-20 18:46:13,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:13,970 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-20 18:46:13,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:13,971 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-20 18:46:13,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:13,972 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-09-20 18:46:13,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:13,974 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-20 18:46:13,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:13,976 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-09-20 18:46:13,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:13,981 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-09-20 18:46:13,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:13,982 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-09-20 18:46:13,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:13,983 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-20 18:46:13,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:13,987 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-09-20 18:46:13,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:13,988 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-09-20 18:46:13,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:13,989 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2024-09-20 18:46:13,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:13,990 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-09-20 18:46:13,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:13,991 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2024-09-20 18:46:13,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:13,992 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2024-09-20 18:46:13,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:13,994 INFO L134 CoverageAnalysis]: Checked inductivity of 1173 backedges. 476 proven. 153 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-09-20 18:46:13,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:46:13,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669531681] [2024-09-20 18:46:13,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669531681] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:46:13,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2078082318] [2024-09-20 18:46:13,994 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-20 18:46:13,994 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:46:13,994 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:46:13,995 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:46:13,996 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2024-09-20 18:46:14,063 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) [2024-09-20 18:46:14,063 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:46:14,065 INFO L262 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-09-20 18:46:14,067 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:46:14,152 INFO L134 CoverageAnalysis]: Checked inductivity of 1173 backedges. 476 proven. 153 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-09-20 18:46:14,152 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:46:14,586 INFO L134 CoverageAnalysis]: Checked inductivity of 1173 backedges. 476 proven. 153 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-09-20 18:46:14,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2078082318] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:46:14,586 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:46:14,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39, 39] total 40 [2024-09-20 18:46:14,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682943143] [2024-09-20 18:46:14,587 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:46:14,587 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-09-20 18:46:14,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:46:14,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-09-20 18:46:14,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=401, Invalid=1159, Unknown=0, NotChecked=0, Total=1560 [2024-09-20 18:46:14,588 INFO L87 Difference]: Start difference. First operand 151 states and 152 transitions. Second operand has 40 states, 40 states have (on average 1.6) internal successors, (64), 40 states have internal predecessors, (64), 19 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2024-09-20 18:46:14,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:46:14,774 INFO L93 Difference]: Finished difference Result 214 states and 233 transitions. [2024-09-20 18:46:14,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-09-20 18:46:14,775 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 1.6) internal successors, (64), 40 states have internal predecessors, (64), 19 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) Word has length 148 [2024-09-20 18:46:14,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:46:14,777 INFO L225 Difference]: With dead ends: 214 [2024-09-20 18:46:14,777 INFO L226 Difference]: Without dead ends: 152 [2024-09-20 18:46:14,777 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 370 GetRequests, 296 SyntacticMatches, 36 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1085 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=401, Invalid=1159, Unknown=0, NotChecked=0, Total=1560 [2024-09-20 18:46:14,778 INFO L434 NwaCegarLoop]: 43 mSDtfsCounter, 0 mSDsluCounter, 263 mSDsCounter, 0 mSdLazyCounter, 394 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 306 SdHoareTripleChecker+Invalid, 394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-20 18:46:14,778 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 306 Invalid, 394 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 394 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-20 18:46:14,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2024-09-20 18:46:14,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 152. [2024-09-20 18:46:14,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 112 states have (on average 1.0178571428571428) internal successors, (114), 113 states have internal predecessors, (114), 20 states have call successors, (20), 20 states have call predecessors, (20), 19 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2024-09-20 18:46:14,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 153 transitions. [2024-09-20 18:46:14,789 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 153 transitions. Word has length 148 [2024-09-20 18:46:14,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:46:14,789 INFO L474 AbstractCegarLoop]: Abstraction has 152 states and 153 transitions. [2024-09-20 18:46:14,790 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 1.6) internal successors, (64), 40 states have internal predecessors, (64), 19 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2024-09-20 18:46:14,790 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:46:14,790 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 153 transitions. [2024-09-20 18:46:14,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2024-09-20 18:46:14,791 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:46:14,791 INFO L216 NwaCegarLoop]: trace histogram [18, 18, 18, 18, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:46:14,807 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2024-09-20 18:46:14,991 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2024-09-20 18:46:14,992 INFO L399 AbstractCegarLoop]: === Iteration 37 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:46:14,992 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:46:14,992 INFO L85 PathProgramCache]: Analyzing trace with hash 669470009, now seen corresponding path program 34 times [2024-09-20 18:46:14,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:46:14,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347642243] [2024-09-20 18:46:14,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:46:14,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:46:15,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:15,398 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:46:15,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:15,400 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-09-20 18:46:15,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:15,401 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-20 18:46:15,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:15,410 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-20 18:46:15,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:15,411 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-09-20 18:46:15,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:15,413 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-09-20 18:46:15,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:15,415 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-09-20 18:46:15,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:15,417 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-20 18:46:15,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:15,419 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-20 18:46:15,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:15,421 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-09-20 18:46:15,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:15,423 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-09-20 18:46:15,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:15,425 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-09-20 18:46:15,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:15,427 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-09-20 18:46:15,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:15,429 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2024-09-20 18:46:15,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:15,431 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-09-20 18:46:15,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:15,432 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2024-09-20 18:46:15,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:15,436 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-09-20 18:46:15,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:15,438 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2024-09-20 18:46:15,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:15,440 INFO L134 CoverageAnalysis]: Checked inductivity of 1191 backedges. 187 proven. 460 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-09-20 18:46:15,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:46:15,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347642243] [2024-09-20 18:46:15,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347642243] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:46:15,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [717665532] [2024-09-20 18:46:15,441 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-20 18:46:15,441 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:46:15,442 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:46:15,443 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:46:15,446 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2024-09-20 18:46:15,531 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-20 18:46:15,532 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:46:15,534 INFO L262 TraceCheckSpWp]: Trace formula consists of 371 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-09-20 18:46:15,539 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:46:15,657 INFO L134 CoverageAnalysis]: Checked inductivity of 1191 backedges. 205 proven. 442 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-09-20 18:46:15,657 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:46:16,010 INFO L134 CoverageAnalysis]: Checked inductivity of 1191 backedges. 205 proven. 442 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-09-20 18:46:16,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [717665532] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:46:16,010 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:46:16,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 26 [2024-09-20 18:46:16,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502255121] [2024-09-20 18:46:16,011 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:46:16,011 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-09-20 18:46:16,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:46:16,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-09-20 18:46:16,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=223, Invalid=427, Unknown=0, NotChecked=0, Total=650 [2024-09-20 18:46:16,012 INFO L87 Difference]: Start difference. First operand 152 states and 153 transitions. Second operand has 26 states, 26 states have (on average 2.576923076923077) internal successors, (67), 24 states have internal predecessors, (67), 19 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2024-09-20 18:46:16,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:46:16,118 INFO L93 Difference]: Finished difference Result 165 states and 167 transitions. [2024-09-20 18:46:16,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-09-20 18:46:16,118 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.576923076923077) internal successors, (67), 24 states have internal predecessors, (67), 19 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) Word has length 149 [2024-09-20 18:46:16,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:46:16,119 INFO L225 Difference]: With dead ends: 165 [2024-09-20 18:46:16,119 INFO L226 Difference]: Without dead ends: 163 [2024-09-20 18:46:16,120 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 374 GetRequests, 313 SyntacticMatches, 36 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 534 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=229, Invalid=473, Unknown=0, NotChecked=0, Total=702 [2024-09-20 18:46:16,120 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 18:46:16,120 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 100 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 18:46:16,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2024-09-20 18:46:16,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 159. [2024-09-20 18:46:16,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 117 states have (on average 1.017094017094017) internal successors, (119), 118 states have internal predecessors, (119), 21 states have call successors, (21), 21 states have call predecessors, (21), 20 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2024-09-20 18:46:16,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 160 transitions. [2024-09-20 18:46:16,132 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 160 transitions. Word has length 149 [2024-09-20 18:46:16,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:46:16,132 INFO L474 AbstractCegarLoop]: Abstraction has 159 states and 160 transitions. [2024-09-20 18:46:16,132 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.576923076923077) internal successors, (67), 24 states have internal predecessors, (67), 19 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2024-09-20 18:46:16,132 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:46:16,132 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 160 transitions. [2024-09-20 18:46:16,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2024-09-20 18:46:16,133 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:46:16,133 INFO L216 NwaCegarLoop]: trace histogram [19, 19, 19, 18, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:46:16,145 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2024-09-20 18:46:16,334 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2024-09-20 18:46:16,335 INFO L399 AbstractCegarLoop]: === Iteration 38 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:46:16,335 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:46:16,335 INFO L85 PathProgramCache]: Analyzing trace with hash -75157173, now seen corresponding path program 35 times [2024-09-20 18:46:16,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:46:16,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655710059] [2024-09-20 18:46:16,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:46:16,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:46:16,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:16,967 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:46:16,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:16,968 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-09-20 18:46:16,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:16,969 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-20 18:46:16,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:16,971 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-20 18:46:16,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:16,972 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-09-20 18:46:16,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:16,973 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-09-20 18:46:16,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:16,974 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-09-20 18:46:16,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:16,974 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-20 18:46:16,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:16,975 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-20 18:46:16,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:16,976 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-09-20 18:46:16,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:16,977 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-09-20 18:46:16,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:16,978 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-09-20 18:46:16,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:16,979 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-09-20 18:46:16,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:16,980 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2024-09-20 18:46:16,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:16,981 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-09-20 18:46:16,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:16,982 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2024-09-20 18:46:16,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:16,983 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-09-20 18:46:16,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:16,984 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2024-09-20 18:46:16,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:16,985 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2024-09-20 18:46:16,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:16,986 INFO L134 CoverageAnalysis]: Checked inductivity of 1314 backedges. 531 proven. 171 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-09-20 18:46:16,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:46:16,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655710059] [2024-09-20 18:46:16,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655710059] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:46:16,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [868298311] [2024-09-20 18:46:16,987 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-20 18:46:16,987 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:46:16,987 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:46:16,988 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:46:16,989 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2024-09-20 18:46:17,066 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 19 check-sat command(s) [2024-09-20 18:46:17,066 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:46:17,068 INFO L262 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-09-20 18:46:17,070 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:46:17,146 INFO L134 CoverageAnalysis]: Checked inductivity of 1314 backedges. 531 proven. 171 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-09-20 18:46:17,146 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:46:17,621 INFO L134 CoverageAnalysis]: Checked inductivity of 1314 backedges. 531 proven. 171 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-09-20 18:46:17,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [868298311] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:46:17,622 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:46:17,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41, 41] total 42 [2024-09-20 18:46:17,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967544601] [2024-09-20 18:46:17,622 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:46:17,622 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-09-20 18:46:17,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:46:17,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-09-20 18:46:17,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=442, Invalid=1280, Unknown=0, NotChecked=0, Total=1722 [2024-09-20 18:46:17,623 INFO L87 Difference]: Start difference. First operand 159 states and 160 transitions. Second operand has 42 states, 42 states have (on average 1.5952380952380953) internal successors, (67), 42 states have internal predecessors, (67), 20 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2024-09-20 18:46:17,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:46:17,816 INFO L93 Difference]: Finished difference Result 225 states and 245 transitions. [2024-09-20 18:46:17,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2024-09-20 18:46:17,817 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 1.5952380952380953) internal successors, (67), 42 states have internal predecessors, (67), 20 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) Word has length 156 [2024-09-20 18:46:17,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:46:17,818 INFO L225 Difference]: With dead ends: 225 [2024-09-20 18:46:17,818 INFO L226 Difference]: Without dead ends: 160 [2024-09-20 18:46:17,819 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 390 GetRequests, 312 SyntacticMatches, 38 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1203 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=442, Invalid=1280, Unknown=0, NotChecked=0, Total=1722 [2024-09-20 18:46:17,819 INFO L434 NwaCegarLoop]: 45 mSDtfsCounter, 0 mSDsluCounter, 373 mSDsCounter, 0 mSdLazyCounter, 454 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 418 SdHoareTripleChecker+Invalid, 454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 454 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-20 18:46:17,819 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 418 Invalid, 454 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 454 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-20 18:46:17,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2024-09-20 18:46:17,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 160. [2024-09-20 18:46:17,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 118 states have (on average 1.0169491525423728) internal successors, (120), 119 states have internal predecessors, (120), 21 states have call successors, (21), 21 states have call predecessors, (21), 20 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2024-09-20 18:46:17,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 161 transitions. [2024-09-20 18:46:17,831 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 161 transitions. Word has length 156 [2024-09-20 18:46:17,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:46:17,831 INFO L474 AbstractCegarLoop]: Abstraction has 160 states and 161 transitions. [2024-09-20 18:46:17,831 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 1.5952380952380953) internal successors, (67), 42 states have internal predecessors, (67), 20 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2024-09-20 18:46:17,831 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:46:17,831 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 161 transitions. [2024-09-20 18:46:17,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2024-09-20 18:46:17,832 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:46:17,832 INFO L216 NwaCegarLoop]: trace histogram [19, 19, 19, 19, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:46:17,843 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2024-09-20 18:46:18,032 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2024-09-20 18:46:18,033 INFO L399 AbstractCegarLoop]: === Iteration 39 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:46:18,033 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:46:18,033 INFO L85 PathProgramCache]: Analyzing trace with hash -1304196649, now seen corresponding path program 36 times [2024-09-20 18:46:18,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:46:18,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157788317] [2024-09-20 18:46:18,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:46:18,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:46:18,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:18,508 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:46:18,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:18,510 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-20 18:46:18,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:18,511 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-20 18:46:18,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:18,512 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-09-20 18:46:18,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:18,513 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-09-20 18:46:18,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:18,515 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-20 18:46:18,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:18,516 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-20 18:46:18,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:18,517 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-20 18:46:18,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:18,519 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-09-20 18:46:18,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:18,520 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-09-20 18:46:18,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:18,521 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-09-20 18:46:18,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:18,523 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-09-20 18:46:18,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:18,524 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-09-20 18:46:18,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:18,525 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-20 18:46:18,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:18,527 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2024-09-20 18:46:18,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:18,528 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-09-20 18:46:18,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:18,529 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2024-09-20 18:46:18,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:18,531 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2024-09-20 18:46:18,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:18,532 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2024-09-20 18:46:18,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:18,533 INFO L134 CoverageAnalysis]: Checked inductivity of 1333 backedges. 207 proven. 514 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-09-20 18:46:18,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:46:18,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157788317] [2024-09-20 18:46:18,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157788317] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:46:18,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [469402591] [2024-09-20 18:46:18,534 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-20 18:46:18,534 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:46:18,534 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:46:18,536 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:46:18,537 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2024-09-20 18:46:18,638 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2024-09-20 18:46:18,638 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:46:18,641 INFO L262 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-09-20 18:46:18,643 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:46:18,759 INFO L134 CoverageAnalysis]: Checked inductivity of 1333 backedges. 226 proven. 495 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-09-20 18:46:18,759 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:46:19,128 INFO L134 CoverageAnalysis]: Checked inductivity of 1333 backedges. 226 proven. 495 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-09-20 18:46:19,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [469402591] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:46:19,128 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:46:19,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 27 [2024-09-20 18:46:19,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053842440] [2024-09-20 18:46:19,129 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:46:19,129 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-09-20 18:46:19,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:46:19,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-09-20 18:46:19,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=244, Invalid=458, Unknown=0, NotChecked=0, Total=702 [2024-09-20 18:46:19,130 INFO L87 Difference]: Start difference. First operand 160 states and 161 transitions. Second operand has 27 states, 27 states have (on average 2.5925925925925926) internal successors, (70), 25 states have internal predecessors, (70), 20 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2024-09-20 18:46:19,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:46:19,280 INFO L93 Difference]: Finished difference Result 173 states and 175 transitions. [2024-09-20 18:46:19,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-09-20 18:46:19,281 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.5925925925925926) internal successors, (70), 25 states have internal predecessors, (70), 20 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) Word has length 157 [2024-09-20 18:46:19,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:46:19,282 INFO L225 Difference]: With dead ends: 173 [2024-09-20 18:46:19,282 INFO L226 Difference]: Without dead ends: 171 [2024-09-20 18:46:19,283 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 394 GetRequests, 330 SyntacticMatches, 38 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 583 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=250, Invalid=506, Unknown=0, NotChecked=0, Total=756 [2024-09-20 18:46:19,283 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 18:46:19,283 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 102 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 18:46:19,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2024-09-20 18:46:19,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 167. [2024-09-20 18:46:19,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 123 states have (on average 1.016260162601626) internal successors, (125), 124 states have internal predecessors, (125), 22 states have call successors, (22), 22 states have call predecessors, (22), 21 states have return successors, (21), 20 states have call predecessors, (21), 21 states have call successors, (21) [2024-09-20 18:46:19,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 168 transitions. [2024-09-20 18:46:19,296 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 168 transitions. Word has length 157 [2024-09-20 18:46:19,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:46:19,298 INFO L474 AbstractCegarLoop]: Abstraction has 167 states and 168 transitions. [2024-09-20 18:46:19,298 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.5925925925925926) internal successors, (70), 25 states have internal predecessors, (70), 20 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2024-09-20 18:46:19,298 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:46:19,298 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 168 transitions. [2024-09-20 18:46:19,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2024-09-20 18:46:19,299 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:46:19,299 INFO L216 NwaCegarLoop]: trace histogram [20, 20, 20, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:46:19,315 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2024-09-20 18:46:19,503 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2024-09-20 18:46:19,504 INFO L399 AbstractCegarLoop]: === Iteration 40 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:46:19,504 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:46:19,504 INFO L85 PathProgramCache]: Analyzing trace with hash 891758317, now seen corresponding path program 37 times [2024-09-20 18:46:19,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:46:19,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279929289] [2024-09-20 18:46:19,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:46:19,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:46:19,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:20,232 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:46:20,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:20,233 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-20 18:46:20,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:20,234 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-20 18:46:20,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:20,236 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-09-20 18:46:20,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:20,237 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-09-20 18:46:20,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:20,238 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-20 18:46:20,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:20,239 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-20 18:46:20,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:20,240 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-20 18:46:20,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:20,242 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-09-20 18:46:20,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:20,243 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-09-20 18:46:20,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:20,244 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-09-20 18:46:20,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:20,245 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-09-20 18:46:20,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:20,245 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-09-20 18:46:20,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:20,246 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-20 18:46:20,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:20,253 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2024-09-20 18:46:20,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:20,255 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-09-20 18:46:20,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:20,257 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2024-09-20 18:46:20,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:20,259 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2024-09-20 18:46:20,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:20,260 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2024-09-20 18:46:20,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:20,262 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-09-20 18:46:20,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:20,264 INFO L134 CoverageAnalysis]: Checked inductivity of 1463 backedges. 589 proven. 190 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-09-20 18:46:20,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:46:20,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279929289] [2024-09-20 18:46:20,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279929289] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:46:20,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1648918465] [2024-09-20 18:46:20,265 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-20 18:46:20,265 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:46:20,265 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:46:20,266 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:46:20,267 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2024-09-20 18:46:20,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:20,337 INFO L262 TraceCheckSpWp]: Trace formula consists of 404 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-09-20 18:46:20,340 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:46:20,437 INFO L134 CoverageAnalysis]: Checked inductivity of 1463 backedges. 589 proven. 190 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-09-20 18:46:20,437 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:46:21,014 INFO L134 CoverageAnalysis]: Checked inductivity of 1463 backedges. 589 proven. 190 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-09-20 18:46:21,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1648918465] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:46:21,014 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:46:21,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43, 43] total 44 [2024-09-20 18:46:21,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590064333] [2024-09-20 18:46:21,014 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:46:21,014 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-09-20 18:46:21,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:46:21,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-09-20 18:46:21,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=485, Invalid=1407, Unknown=0, NotChecked=0, Total=1892 [2024-09-20 18:46:21,016 INFO L87 Difference]: Start difference. First operand 167 states and 168 transitions. Second operand has 44 states, 44 states have (on average 1.5909090909090908) internal successors, (70), 44 states have internal predecessors, (70), 21 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-09-20 18:46:21,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:46:21,202 INFO L93 Difference]: Finished difference Result 236 states and 257 transitions. [2024-09-20 18:46:21,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2024-09-20 18:46:21,203 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 1.5909090909090908) internal successors, (70), 44 states have internal predecessors, (70), 21 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Word has length 164 [2024-09-20 18:46:21,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:46:21,204 INFO L225 Difference]: With dead ends: 236 [2024-09-20 18:46:21,204 INFO L226 Difference]: Without dead ends: 168 [2024-09-20 18:46:21,205 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 410 GetRequests, 328 SyntacticMatches, 40 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1327 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=485, Invalid=1407, Unknown=0, NotChecked=0, Total=1892 [2024-09-20 18:46:21,206 INFO L434 NwaCegarLoop]: 47 mSDtfsCounter, 0 mSDsluCounter, 297 mSDsCounter, 0 mSdLazyCounter, 388 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 344 SdHoareTripleChecker+Invalid, 388 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 388 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-20 18:46:21,206 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 344 Invalid, 388 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 388 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-20 18:46:21,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2024-09-20 18:46:21,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 168. [2024-09-20 18:46:21,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 124 states have (on average 1.0161290322580645) internal successors, (126), 125 states have internal predecessors, (126), 22 states have call successors, (22), 22 states have call predecessors, (22), 21 states have return successors, (21), 20 states have call predecessors, (21), 21 states have call successors, (21) [2024-09-20 18:46:21,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 169 transitions. [2024-09-20 18:46:21,221 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 169 transitions. Word has length 164 [2024-09-20 18:46:21,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:46:21,221 INFO L474 AbstractCegarLoop]: Abstraction has 168 states and 169 transitions. [2024-09-20 18:46:21,221 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 1.5909090909090908) internal successors, (70), 44 states have internal predecessors, (70), 21 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-09-20 18:46:21,222 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:46:21,222 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 169 transitions. [2024-09-20 18:46:21,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2024-09-20 18:46:21,222 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:46:21,223 INFO L216 NwaCegarLoop]: trace histogram [20, 20, 20, 20, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:46:21,239 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2024-09-20 18:46:21,423 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2024-09-20 18:46:21,424 INFO L399 AbstractCegarLoop]: === Iteration 41 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:46:21,424 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:46:21,424 INFO L85 PathProgramCache]: Analyzing trace with hash -377867399, now seen corresponding path program 38 times [2024-09-20 18:46:21,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:46:21,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261029354] [2024-09-20 18:46:21,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:46:21,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:46:21,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:21,905 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:46:21,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:21,907 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-20 18:46:21,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:21,908 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-09-20 18:46:21,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:21,908 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-20 18:46:21,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:21,909 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-09-20 18:46:21,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:21,910 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-20 18:46:21,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:21,911 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-20 18:46:21,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:21,912 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-09-20 18:46:21,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:21,913 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-09-20 18:46:21,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:21,914 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-09-20 18:46:21,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:21,915 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-09-20 18:46:21,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:21,916 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-09-20 18:46:21,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:21,917 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-20 18:46:21,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:21,917 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2024-09-20 18:46:21,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:21,918 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2024-09-20 18:46:21,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:21,919 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2024-09-20 18:46:21,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:21,920 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2024-09-20 18:46:21,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:21,921 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2024-09-20 18:46:21,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:21,922 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-09-20 18:46:21,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:21,923 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2024-09-20 18:46:21,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:21,924 INFO L134 CoverageAnalysis]: Checked inductivity of 1483 backedges. 228 proven. 571 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-09-20 18:46:21,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:46:21,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261029354] [2024-09-20 18:46:21,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261029354] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:46:21,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2043026066] [2024-09-20 18:46:21,925 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-20 18:46:21,925 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:46:21,925 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:46:21,927 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:46:21,929 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2024-09-20 18:46:22,007 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-20 18:46:22,007 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:46:22,009 INFO L262 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-09-20 18:46:22,011 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:46:22,112 INFO L134 CoverageAnalysis]: Checked inductivity of 1483 backedges. 248 proven. 551 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-09-20 18:46:22,112 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:46:22,556 INFO L134 CoverageAnalysis]: Checked inductivity of 1483 backedges. 248 proven. 551 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-09-20 18:46:22,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2043026066] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:46:22,556 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:46:22,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 28 [2024-09-20 18:46:22,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261530107] [2024-09-20 18:46:22,557 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:46:22,557 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-09-20 18:46:22,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:46:22,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-09-20 18:46:22,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=266, Invalid=490, Unknown=0, NotChecked=0, Total=756 [2024-09-20 18:46:22,558 INFO L87 Difference]: Start difference. First operand 168 states and 169 transitions. Second operand has 28 states, 28 states have (on average 2.607142857142857) internal successors, (73), 26 states have internal predecessors, (73), 21 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-09-20 18:46:22,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:46:22,684 INFO L93 Difference]: Finished difference Result 181 states and 183 transitions. [2024-09-20 18:46:22,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-09-20 18:46:22,684 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.607142857142857) internal successors, (73), 26 states have internal predecessors, (73), 21 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Word has length 165 [2024-09-20 18:46:22,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:46:22,686 INFO L225 Difference]: With dead ends: 181 [2024-09-20 18:46:22,686 INFO L226 Difference]: Without dead ends: 179 [2024-09-20 18:46:22,686 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 414 GetRequests, 345 SyntacticMatches, 42 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 676 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=272, Invalid=540, Unknown=0, NotChecked=0, Total=812 [2024-09-20 18:46:22,687 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 18:46:22,687 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 103 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 249 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 18:46:22,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2024-09-20 18:46:22,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 175. [2024-09-20 18:46:22,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 129 states have (on average 1.0155038759689923) internal successors, (131), 130 states have internal predecessors, (131), 23 states have call successors, (23), 23 states have call predecessors, (23), 22 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2024-09-20 18:46:22,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 176 transitions. [2024-09-20 18:46:22,700 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 176 transitions. Word has length 165 [2024-09-20 18:46:22,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:46:22,700 INFO L474 AbstractCegarLoop]: Abstraction has 175 states and 176 transitions. [2024-09-20 18:46:22,701 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 2.607142857142857) internal successors, (73), 26 states have internal predecessors, (73), 21 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-09-20 18:46:22,701 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:46:22,701 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 176 transitions. [2024-09-20 18:46:22,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2024-09-20 18:46:22,702 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:46:22,702 INFO L216 NwaCegarLoop]: trace histogram [21, 21, 21, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:46:22,718 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Ended with exit code 0 [2024-09-20 18:46:22,902 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,40 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:46:22,902 INFO L399 AbstractCegarLoop]: === Iteration 42 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:46:22,903 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:46:22,903 INFO L85 PathProgramCache]: Analyzing trace with hash -129055989, now seen corresponding path program 39 times [2024-09-20 18:46:22,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:46:22,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624079394] [2024-09-20 18:46:22,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:46:22,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:46:22,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:23,671 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:46:23,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:23,673 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-20 18:46:23,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:23,674 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-09-20 18:46:23,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:23,675 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-20 18:46:23,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:23,676 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-09-20 18:46:23,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:23,678 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-20 18:46:23,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:23,679 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-20 18:46:23,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:23,680 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-09-20 18:46:23,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:23,681 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-09-20 18:46:23,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:23,683 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-09-20 18:46:23,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:23,684 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-09-20 18:46:23,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:23,685 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-09-20 18:46:23,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:23,686 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-20 18:46:23,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:23,688 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2024-09-20 18:46:23,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:23,689 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2024-09-20 18:46:23,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:23,690 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2024-09-20 18:46:23,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:23,691 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2024-09-20 18:46:23,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:23,693 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2024-09-20 18:46:23,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:23,694 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-09-20 18:46:23,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:23,695 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2024-09-20 18:46:23,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:23,696 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2024-09-20 18:46:23,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:23,697 INFO L134 CoverageAnalysis]: Checked inductivity of 1620 backedges. 650 proven. 210 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-09-20 18:46:23,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:46:23,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624079394] [2024-09-20 18:46:23,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624079394] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:46:23,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1562943586] [2024-09-20 18:46:23,697 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-20 18:46:23,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:46:23,697 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:46:23,698 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:46:23,699 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2024-09-20 18:46:23,780 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 21 check-sat command(s) [2024-09-20 18:46:23,780 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:46:23,781 INFO L262 TraceCheckSpWp]: Trace formula consists of 423 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-09-20 18:46:23,783 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:46:23,863 INFO L134 CoverageAnalysis]: Checked inductivity of 1620 backedges. 650 proven. 210 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-09-20 18:46:23,863 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:46:24,496 INFO L134 CoverageAnalysis]: Checked inductivity of 1620 backedges. 650 proven. 210 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-09-20 18:46:24,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1562943586] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:46:24,497 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:46:24,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45, 45] total 46 [2024-09-20 18:46:24,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671751362] [2024-09-20 18:46:24,497 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:46:24,497 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2024-09-20 18:46:24,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:46:24,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2024-09-20 18:46:24,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=530, Invalid=1540, Unknown=0, NotChecked=0, Total=2070 [2024-09-20 18:46:24,498 INFO L87 Difference]: Start difference. First operand 175 states and 176 transitions. Second operand has 46 states, 46 states have (on average 1.5869565217391304) internal successors, (73), 46 states have internal predecessors, (73), 22 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2024-09-20 18:46:24,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:46:24,737 INFO L93 Difference]: Finished difference Result 247 states and 269 transitions. [2024-09-20 18:46:24,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2024-09-20 18:46:24,738 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 1.5869565217391304) internal successors, (73), 46 states have internal predecessors, (73), 22 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) Word has length 172 [2024-09-20 18:46:24,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:46:24,739 INFO L225 Difference]: With dead ends: 247 [2024-09-20 18:46:24,740 INFO L226 Difference]: Without dead ends: 176 [2024-09-20 18:46:24,740 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 430 GetRequests, 344 SyntacticMatches, 42 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1457 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=530, Invalid=1540, Unknown=0, NotChecked=0, Total=2070 [2024-09-20 18:46:24,741 INFO L434 NwaCegarLoop]: 49 mSDtfsCounter, 0 mSDsluCounter, 357 mSDsCounter, 0 mSdLazyCounter, 517 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 406 SdHoareTripleChecker+Invalid, 517 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 517 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-20 18:46:24,741 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 406 Invalid, 517 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 517 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-20 18:46:24,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2024-09-20 18:46:24,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 176. [2024-09-20 18:46:24,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 130 states have (on average 1.0153846153846153) internal successors, (132), 131 states have internal predecessors, (132), 23 states have call successors, (23), 23 states have call predecessors, (23), 22 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2024-09-20 18:46:24,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 177 transitions. [2024-09-20 18:46:24,759 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 177 transitions. Word has length 172 [2024-09-20 18:46:24,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:46:24,759 INFO L474 AbstractCegarLoop]: Abstraction has 176 states and 177 transitions. [2024-09-20 18:46:24,759 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 1.5869565217391304) internal successors, (73), 46 states have internal predecessors, (73), 22 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2024-09-20 18:46:24,759 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:46:24,759 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 177 transitions. [2024-09-20 18:46:24,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2024-09-20 18:46:24,760 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:46:24,760 INFO L216 NwaCegarLoop]: trace histogram [21, 21, 21, 21, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:46:24,777 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2024-09-20 18:46:24,961 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2024-09-20 18:46:24,961 INFO L399 AbstractCegarLoop]: === Iteration 43 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:46:24,961 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:46:24,961 INFO L85 PathProgramCache]: Analyzing trace with hash -196967529, now seen corresponding path program 40 times [2024-09-20 18:46:24,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:46:24,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829569884] [2024-09-20 18:46:24,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:46:24,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:46:24,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:25,498 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:46:25,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:25,499 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-20 18:46:25,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:25,500 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-20 18:46:25,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:25,501 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-09-20 18:46:25,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:25,502 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-20 18:46:25,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:25,503 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-09-20 18:46:25,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:25,504 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-20 18:46:25,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:25,506 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-09-20 18:46:25,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:25,507 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-09-20 18:46:25,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:25,508 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-09-20 18:46:25,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:25,509 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-09-20 18:46:25,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:25,510 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-09-20 18:46:25,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:25,511 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-09-20 18:46:25,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:25,511 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2024-09-20 18:46:25,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:25,512 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2024-09-20 18:46:25,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:25,513 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2024-09-20 18:46:25,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:25,514 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2024-09-20 18:46:25,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:25,515 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2024-09-20 18:46:25,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:25,517 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2024-09-20 18:46:25,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:25,518 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2024-09-20 18:46:25,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:25,519 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2024-09-20 18:46:25,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:25,521 INFO L134 CoverageAnalysis]: Checked inductivity of 1641 backedges. 250 proven. 631 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-09-20 18:46:25,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:46:25,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829569884] [2024-09-20 18:46:25,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [829569884] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:46:25,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1461163964] [2024-09-20 18:46:25,522 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-20 18:46:25,522 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:46:25,522 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:46:25,523 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:46:25,525 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2024-09-20 18:46:25,595 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-20 18:46:25,595 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:46:25,596 INFO L262 TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-09-20 18:46:25,598 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:46:25,695 INFO L134 CoverageAnalysis]: Checked inductivity of 1641 backedges. 271 proven. 610 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-09-20 18:46:25,695 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:46:26,155 INFO L134 CoverageAnalysis]: Checked inductivity of 1641 backedges. 271 proven. 610 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-09-20 18:46:26,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1461163964] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:46:26,155 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:46:26,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 26] total 29 [2024-09-20 18:46:26,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229955533] [2024-09-20 18:46:26,155 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:46:26,156 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-09-20 18:46:26,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:46:26,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-09-20 18:46:26,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=289, Invalid=523, Unknown=0, NotChecked=0, Total=812 [2024-09-20 18:46:26,157 INFO L87 Difference]: Start difference. First operand 176 states and 177 transitions. Second operand has 29 states, 29 states have (on average 2.6206896551724137) internal successors, (76), 27 states have internal predecessors, (76), 22 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2024-09-20 18:46:26,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:46:26,278 INFO L93 Difference]: Finished difference Result 189 states and 191 transitions. [2024-09-20 18:46:26,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-09-20 18:46:26,279 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.6206896551724137) internal successors, (76), 27 states have internal predecessors, (76), 22 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) Word has length 173 [2024-09-20 18:46:26,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:46:26,280 INFO L225 Difference]: With dead ends: 189 [2024-09-20 18:46:26,280 INFO L226 Difference]: Without dead ends: 187 [2024-09-20 18:46:26,280 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 434 GetRequests, 364 SyntacticMatches, 42 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 687 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=295, Invalid=575, Unknown=0, NotChecked=0, Total=870 [2024-09-20 18:46:26,281 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 18:46:26,281 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 104 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 18:46:26,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2024-09-20 18:46:26,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 183. [2024-09-20 18:46:26,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 135 states have (on average 1.0148148148148148) internal successors, (137), 136 states have internal predecessors, (137), 24 states have call successors, (24), 24 states have call predecessors, (24), 23 states have return successors, (23), 22 states have call predecessors, (23), 23 states have call successors, (23) [2024-09-20 18:46:26,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 184 transitions. [2024-09-20 18:46:26,296 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 184 transitions. Word has length 173 [2024-09-20 18:46:26,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:46:26,296 INFO L474 AbstractCegarLoop]: Abstraction has 183 states and 184 transitions. [2024-09-20 18:46:26,297 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 2.6206896551724137) internal successors, (76), 27 states have internal predecessors, (76), 22 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2024-09-20 18:46:26,297 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:46:26,297 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 184 transitions. [2024-09-20 18:46:26,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2024-09-20 18:46:26,298 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:46:26,298 INFO L216 NwaCegarLoop]: trace histogram [22, 22, 22, 21, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:46:26,315 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Ended with exit code 0 [2024-09-20 18:46:26,498 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,42 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:46:26,499 INFO L399 AbstractCegarLoop]: === Iteration 44 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:46:26,500 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:46:26,500 INFO L85 PathProgramCache]: Analyzing trace with hash 1190114605, now seen corresponding path program 41 times [2024-09-20 18:46:26,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:46:26,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145920197] [2024-09-20 18:46:26,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:46:26,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:46:26,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:27,352 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:46:27,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:27,354 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-20 18:46:27,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:27,355 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-20 18:46:27,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:27,355 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-09-20 18:46:27,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:27,356 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-20 18:46:27,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:27,357 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-09-20 18:46:27,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:27,359 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-20 18:46:27,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:27,360 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-09-20 18:46:27,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:27,361 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-09-20 18:46:27,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:27,362 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-09-20 18:46:27,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:27,363 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-09-20 18:46:27,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:27,364 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-09-20 18:46:27,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:27,365 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-09-20 18:46:27,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:27,366 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2024-09-20 18:46:27,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:27,367 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2024-09-20 18:46:27,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:27,368 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2024-09-20 18:46:27,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:27,369 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2024-09-20 18:46:27,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:27,370 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2024-09-20 18:46:27,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:27,371 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2024-09-20 18:46:27,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:27,372 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2024-09-20 18:46:27,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:27,373 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2024-09-20 18:46:27,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:27,374 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2024-09-20 18:46:27,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:27,375 INFO L134 CoverageAnalysis]: Checked inductivity of 1785 backedges. 714 proven. 231 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2024-09-20 18:46:27,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:46:27,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145920197] [2024-09-20 18:46:27,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145920197] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:46:27,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [992535867] [2024-09-20 18:46:27,375 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-20 18:46:27,375 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:46:27,375 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:46:27,376 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:46:27,377 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2024-09-20 18:46:27,455 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 22 check-sat command(s) [2024-09-20 18:46:27,455 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:46:27,457 INFO L262 TraceCheckSpWp]: Trace formula consists of 442 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-09-20 18:46:27,459 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:46:27,542 INFO L134 CoverageAnalysis]: Checked inductivity of 1785 backedges. 714 proven. 231 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2024-09-20 18:46:27,542 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:46:28,166 INFO L134 CoverageAnalysis]: Checked inductivity of 1785 backedges. 714 proven. 231 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2024-09-20 18:46:28,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [992535867] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:46:28,167 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:46:28,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47, 47] total 48 [2024-09-20 18:46:28,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118208436] [2024-09-20 18:46:28,167 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:46:28,167 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2024-09-20 18:46:28,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:46:28,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2024-09-20 18:46:28,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=577, Invalid=1679, Unknown=0, NotChecked=0, Total=2256 [2024-09-20 18:46:28,168 INFO L87 Difference]: Start difference. First operand 183 states and 184 transitions. Second operand has 48 states, 48 states have (on average 1.5833333333333333) internal successors, (76), 48 states have internal predecessors, (76), 23 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2024-09-20 18:46:28,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:46:28,410 INFO L93 Difference]: Finished difference Result 258 states and 281 transitions. [2024-09-20 18:46:28,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2024-09-20 18:46:28,411 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 1.5833333333333333) internal successors, (76), 48 states have internal predecessors, (76), 23 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) Word has length 180 [2024-09-20 18:46:28,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:46:28,413 INFO L225 Difference]: With dead ends: 258 [2024-09-20 18:46:28,413 INFO L226 Difference]: Without dead ends: 184 [2024-09-20 18:46:28,413 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 450 GetRequests, 360 SyntacticMatches, 44 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1593 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=577, Invalid=1679, Unknown=0, NotChecked=0, Total=2256 [2024-09-20 18:46:28,414 INFO L434 NwaCegarLoop]: 51 mSDtfsCounter, 0 mSDsluCounter, 361 mSDsCounter, 0 mSdLazyCounter, 548 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 412 SdHoareTripleChecker+Invalid, 548 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 548 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-20 18:46:28,414 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 412 Invalid, 548 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 548 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-20 18:46:28,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2024-09-20 18:46:28,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 184. [2024-09-20 18:46:28,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 136 states have (on average 1.0147058823529411) internal successors, (138), 137 states have internal predecessors, (138), 24 states have call successors, (24), 24 states have call predecessors, (24), 23 states have return successors, (23), 22 states have call predecessors, (23), 23 states have call successors, (23) [2024-09-20 18:46:28,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 185 transitions. [2024-09-20 18:46:28,427 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 185 transitions. Word has length 180 [2024-09-20 18:46:28,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:46:28,428 INFO L474 AbstractCegarLoop]: Abstraction has 184 states and 185 transitions. [2024-09-20 18:46:28,428 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 1.5833333333333333) internal successors, (76), 48 states have internal predecessors, (76), 23 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2024-09-20 18:46:28,428 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:46:28,428 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 185 transitions. [2024-09-20 18:46:28,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2024-09-20 18:46:28,428 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:46:28,429 INFO L216 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:46:28,441 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Ended with exit code 0 [2024-09-20 18:46:28,629 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,43 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:46:28,629 INFO L399 AbstractCegarLoop]: === Iteration 45 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:46:28,629 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:46:28,629 INFO L85 PathProgramCache]: Analyzing trace with hash 143665593, now seen corresponding path program 42 times [2024-09-20 18:46:28,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:46:28,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610791213] [2024-09-20 18:46:28,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:46:28,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:46:28,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:29,094 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:46:29,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:29,095 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-09-20 18:46:29,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:29,096 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-20 18:46:29,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:29,097 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-09-20 18:46:29,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:29,098 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-20 18:46:29,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:29,099 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-09-20 18:46:29,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:29,100 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-09-20 18:46:29,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:29,101 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-09-20 18:46:29,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:29,102 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-09-20 18:46:29,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:29,103 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-09-20 18:46:29,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:29,105 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-09-20 18:46:29,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:29,106 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2024-09-20 18:46:29,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:29,107 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-09-20 18:46:29,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:29,108 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2024-09-20 18:46:29,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:29,110 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-09-20 18:46:29,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:29,111 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2024-09-20 18:46:29,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:29,112 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2024-09-20 18:46:29,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:29,113 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2024-09-20 18:46:29,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:29,114 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-09-20 18:46:29,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:29,115 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2024-09-20 18:46:29,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:29,116 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2024-09-20 18:46:29,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:29,117 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2024-09-20 18:46:29,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:29,118 INFO L134 CoverageAnalysis]: Checked inductivity of 1807 backedges. 273 proven. 694 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2024-09-20 18:46:29,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:46:29,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610791213] [2024-09-20 18:46:29,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610791213] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:46:29,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1318300578] [2024-09-20 18:46:29,118 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-20 18:46:29,119 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:46:29,119 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:46:29,120 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:46:29,121 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2024-09-20 18:46:29,210 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 22 check-sat command(s) [2024-09-20 18:46:29,210 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:46:29,213 INFO L262 TraceCheckSpWp]: Trace formula consists of 447 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-09-20 18:46:29,216 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:46:29,352 INFO L134 CoverageAnalysis]: Checked inductivity of 1807 backedges. 295 proven. 672 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2024-09-20 18:46:29,352 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:46:29,817 INFO L134 CoverageAnalysis]: Checked inductivity of 1807 backedges. 295 proven. 672 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2024-09-20 18:46:29,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1318300578] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:46:29,817 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:46:29,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27, 27] total 30 [2024-09-20 18:46:29,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314994547] [2024-09-20 18:46:29,818 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:46:29,818 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-09-20 18:46:29,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:46:29,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-09-20 18:46:29,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=313, Invalid=557, Unknown=0, NotChecked=0, Total=870 [2024-09-20 18:46:29,819 INFO L87 Difference]: Start difference. First operand 184 states and 185 transitions. Second operand has 30 states, 30 states have (on average 2.6333333333333333) internal successors, (79), 28 states have internal predecessors, (79), 23 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2024-09-20 18:46:29,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:46:29,938 INFO L93 Difference]: Finished difference Result 197 states and 199 transitions. [2024-09-20 18:46:29,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-09-20 18:46:29,939 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.6333333333333333) internal successors, (79), 28 states have internal predecessors, (79), 23 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) Word has length 181 [2024-09-20 18:46:29,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:46:29,940 INFO L225 Difference]: With dead ends: 197 [2024-09-20 18:46:29,940 INFO L226 Difference]: Without dead ends: 195 [2024-09-20 18:46:29,941 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 454 GetRequests, 381 SyntacticMatches, 44 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 742 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=319, Invalid=611, Unknown=0, NotChecked=0, Total=930 [2024-09-20 18:46:29,941 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 18:46:29,941 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 97 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 18:46:29,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2024-09-20 18:46:29,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 191. [2024-09-20 18:46:29,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 141 states have (on average 1.0141843971631206) internal successors, (143), 142 states have internal predecessors, (143), 25 states have call successors, (25), 25 states have call predecessors, (25), 24 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) [2024-09-20 18:46:29,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 192 transitions. [2024-09-20 18:46:29,956 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 192 transitions. Word has length 181 [2024-09-20 18:46:29,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:46:29,956 INFO L474 AbstractCegarLoop]: Abstraction has 191 states and 192 transitions. [2024-09-20 18:46:29,957 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 2.6333333333333333) internal successors, (79), 28 states have internal predecessors, (79), 23 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2024-09-20 18:46:29,957 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:46:29,957 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 192 transitions. [2024-09-20 18:46:29,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2024-09-20 18:46:29,958 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:46:29,958 INFO L216 NwaCegarLoop]: trace histogram [23, 23, 23, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:46:29,974 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0 [2024-09-20 18:46:30,162 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2024-09-20 18:46:30,163 INFO L399 AbstractCegarLoop]: === Iteration 46 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:46:30,163 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:46:30,163 INFO L85 PathProgramCache]: Analyzing trace with hash 16991435, now seen corresponding path program 43 times [2024-09-20 18:46:30,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:46:30,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853122400] [2024-09-20 18:46:30,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:46:30,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:46:30,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:30,984 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:46:30,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:30,985 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-09-20 18:46:30,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:30,987 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-20 18:46:30,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:30,988 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-09-20 18:46:30,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:30,989 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-20 18:46:30,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:30,990 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-09-20 18:46:30,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:30,991 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-09-20 18:46:30,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:30,992 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-09-20 18:46:30,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:30,994 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-09-20 18:46:30,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:30,995 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-09-20 18:46:30,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:30,996 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-09-20 18:46:30,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:30,997 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2024-09-20 18:46:30,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:30,998 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-09-20 18:46:30,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:30,999 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2024-09-20 18:46:30,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:30,999 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-09-20 18:46:31,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:31,000 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2024-09-20 18:46:31,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:31,001 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2024-09-20 18:46:31,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:31,002 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2024-09-20 18:46:31,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:31,003 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-09-20 18:46:31,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:31,004 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2024-09-20 18:46:31,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:31,004 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2024-09-20 18:46:31,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:31,011 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2024-09-20 18:46:31,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:31,012 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2024-09-20 18:46:31,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:31,013 INFO L134 CoverageAnalysis]: Checked inductivity of 1958 backedges. 781 proven. 253 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2024-09-20 18:46:31,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:46:31,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853122400] [2024-09-20 18:46:31,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853122400] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:46:31,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1505041419] [2024-09-20 18:46:31,013 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-20 18:46:31,014 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:46:31,014 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:46:31,015 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:46:31,016 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2024-09-20 18:46:31,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:31,087 INFO L262 TraceCheckSpWp]: Trace formula consists of 461 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-09-20 18:46:31,090 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:46:31,204 INFO L134 CoverageAnalysis]: Checked inductivity of 1958 backedges. 781 proven. 253 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2024-09-20 18:46:31,204 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:46:31,870 INFO L134 CoverageAnalysis]: Checked inductivity of 1958 backedges. 781 proven. 253 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2024-09-20 18:46:31,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1505041419] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:46:31,870 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:46:31,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49, 49] total 50 [2024-09-20 18:46:31,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237481945] [2024-09-20 18:46:31,871 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:46:31,871 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2024-09-20 18:46:31,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:46:31,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2024-09-20 18:46:31,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=626, Invalid=1824, Unknown=0, NotChecked=0, Total=2450 [2024-09-20 18:46:31,872 INFO L87 Difference]: Start difference. First operand 191 states and 192 transitions. Second operand has 50 states, 50 states have (on average 1.58) internal successors, (79), 50 states have internal predecessors, (79), 24 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2024-09-20 18:46:32,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:46:32,141 INFO L93 Difference]: Finished difference Result 269 states and 293 transitions. [2024-09-20 18:46:32,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2024-09-20 18:46:32,142 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 1.58) internal successors, (79), 50 states have internal predecessors, (79), 24 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) Word has length 188 [2024-09-20 18:46:32,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:46:32,144 INFO L225 Difference]: With dead ends: 269 [2024-09-20 18:46:32,144 INFO L226 Difference]: Without dead ends: 192 [2024-09-20 18:46:32,145 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 470 GetRequests, 376 SyntacticMatches, 46 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1735 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=626, Invalid=1824, Unknown=0, NotChecked=0, Total=2450 [2024-09-20 18:46:32,145 INFO L434 NwaCegarLoop]: 53 mSDtfsCounter, 0 mSDsluCounter, 354 mSDsCounter, 0 mSdLazyCounter, 490 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 407 SdHoareTripleChecker+Invalid, 490 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 490 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-20 18:46:32,145 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 407 Invalid, 490 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 490 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-20 18:46:32,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2024-09-20 18:46:32,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 192. [2024-09-20 18:46:32,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 142 states have (on average 1.0140845070422535) internal successors, (144), 143 states have internal predecessors, (144), 25 states have call successors, (25), 25 states have call predecessors, (25), 24 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) [2024-09-20 18:46:32,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 193 transitions. [2024-09-20 18:46:32,159 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 193 transitions. Word has length 188 [2024-09-20 18:46:32,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:46:32,160 INFO L474 AbstractCegarLoop]: Abstraction has 192 states and 193 transitions. [2024-09-20 18:46:32,160 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 1.58) internal successors, (79), 50 states have internal predecessors, (79), 24 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2024-09-20 18:46:32,160 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:46:32,160 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 193 transitions. [2024-09-20 18:46:32,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2024-09-20 18:46:32,161 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:46:32,161 INFO L216 NwaCegarLoop]: trace histogram [23, 23, 23, 23, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:46:32,177 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Ended with exit code 0 [2024-09-20 18:46:32,362 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2024-09-20 18:46:32,362 INFO L399 AbstractCegarLoop]: === Iteration 47 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:46:32,362 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:46:32,362 INFO L85 PathProgramCache]: Analyzing trace with hash 979135831, now seen corresponding path program 44 times [2024-09-20 18:46:32,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:46:32,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062913334] [2024-09-20 18:46:32,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:46:32,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:46:32,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:32,845 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:46:32,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:32,846 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-09-20 18:46:32,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:32,847 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-20 18:46:32,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:32,848 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-20 18:46:32,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:32,849 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-09-20 18:46:32,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:32,850 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-20 18:46:32,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:32,851 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-09-20 18:46:32,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:32,851 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-09-20 18:46:32,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:32,852 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-09-20 18:46:32,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:32,853 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-20 18:46:32,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:32,854 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-09-20 18:46:32,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:32,855 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-09-20 18:46:32,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:32,856 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2024-09-20 18:46:32,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:32,856 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-09-20 18:46:32,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:32,857 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2024-09-20 18:46:32,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:32,859 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2024-09-20 18:46:32,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:32,860 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2024-09-20 18:46:32,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:32,861 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2024-09-20 18:46:32,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:32,863 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2024-09-20 18:46:32,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:32,864 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-09-20 18:46:32,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:32,865 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2024-09-20 18:46:32,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:32,867 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2024-09-20 18:46:32,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:32,868 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2024-09-20 18:46:32,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:32,869 INFO L134 CoverageAnalysis]: Checked inductivity of 1981 backedges. 297 proven. 760 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2024-09-20 18:46:32,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:46:32,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062913334] [2024-09-20 18:46:32,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062913334] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:46:32,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [159665385] [2024-09-20 18:46:32,870 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-20 18:46:32,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:46:32,870 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:46:32,872 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:46:32,874 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2024-09-20 18:46:32,954 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-20 18:46:32,954 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:46:32,956 INFO L262 TraceCheckSpWp]: Trace formula consists of 466 conjuncts, 49 conjuncts are in the unsatisfiable core [2024-09-20 18:46:32,958 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:46:33,098 INFO L134 CoverageAnalysis]: Checked inductivity of 1981 backedges. 320 proven. 737 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2024-09-20 18:46:33,098 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:46:33,647 INFO L134 CoverageAnalysis]: Checked inductivity of 1981 backedges. 320 proven. 737 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2024-09-20 18:46:33,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [159665385] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:46:33,647 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:46:33,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28, 28] total 31 [2024-09-20 18:46:33,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143642924] [2024-09-20 18:46:33,647 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:46:33,647 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-09-20 18:46:33,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:46:33,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-09-20 18:46:33,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=338, Invalid=592, Unknown=0, NotChecked=0, Total=930 [2024-09-20 18:46:33,648 INFO L87 Difference]: Start difference. First operand 192 states and 193 transitions. Second operand has 31 states, 31 states have (on average 2.6451612903225805) internal successors, (82), 29 states have internal predecessors, (82), 24 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2024-09-20 18:46:33,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:46:33,805 INFO L93 Difference]: Finished difference Result 205 states and 207 transitions. [2024-09-20 18:46:33,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-09-20 18:46:33,805 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.6451612903225805) internal successors, (82), 29 states have internal predecessors, (82), 24 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) Word has length 189 [2024-09-20 18:46:33,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:46:33,807 INFO L225 Difference]: With dead ends: 205 [2024-09-20 18:46:33,807 INFO L226 Difference]: Without dead ends: 203 [2024-09-20 18:46:33,807 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 474 GetRequests, 396 SyntacticMatches, 48 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 847 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=344, Invalid=648, Unknown=0, NotChecked=0, Total=992 [2024-09-20 18:46:33,808 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 278 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 18:46:33,808 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 98 Invalid, 280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 278 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 18:46:33,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2024-09-20 18:46:33,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 199. [2024-09-20 18:46:33,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 147 states have (on average 1.0136054421768708) internal successors, (149), 148 states have internal predecessors, (149), 26 states have call successors, (26), 26 states have call predecessors, (26), 25 states have return successors, (25), 24 states have call predecessors, (25), 25 states have call successors, (25) [2024-09-20 18:46:33,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 200 transitions. [2024-09-20 18:46:33,823 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 200 transitions. Word has length 189 [2024-09-20 18:46:33,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:46:33,824 INFO L474 AbstractCegarLoop]: Abstraction has 199 states and 200 transitions. [2024-09-20 18:46:33,824 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.6451612903225805) internal successors, (82), 29 states have internal predecessors, (82), 24 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2024-09-20 18:46:33,824 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:46:33,824 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 200 transitions. [2024-09-20 18:46:33,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2024-09-20 18:46:33,825 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:46:33,825 INFO L216 NwaCegarLoop]: trace histogram [24, 24, 24, 23, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:46:33,841 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Ended with exit code 0 [2024-09-20 18:46:34,026 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46,46 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:46:34,026 INFO L399 AbstractCegarLoop]: === Iteration 48 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:46:34,026 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:46:34,026 INFO L85 PathProgramCache]: Analyzing trace with hash 2104447853, now seen corresponding path program 45 times [2024-09-20 18:46:34,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:46:34,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480139790] [2024-09-20 18:46:34,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:46:34,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:46:34,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:34,912 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:46:34,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:34,914 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-09-20 18:46:34,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:34,914 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-20 18:46:34,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:34,915 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-20 18:46:34,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:34,916 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-09-20 18:46:34,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:34,917 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-20 18:46:34,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:34,918 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-09-20 18:46:34,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:34,919 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-09-20 18:46:34,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:34,920 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-09-20 18:46:34,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:34,921 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-20 18:46:34,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:34,921 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-09-20 18:46:34,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:34,922 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-09-20 18:46:34,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:34,923 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2024-09-20 18:46:34,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:34,924 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-09-20 18:46:34,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:34,925 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2024-09-20 18:46:34,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:34,925 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2024-09-20 18:46:34,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:34,926 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2024-09-20 18:46:34,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:34,927 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2024-09-20 18:46:34,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:34,928 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2024-09-20 18:46:34,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:34,929 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-09-20 18:46:34,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:34,930 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2024-09-20 18:46:34,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:34,931 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2024-09-20 18:46:34,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:34,933 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2024-09-20 18:46:34,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:34,934 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2024-09-20 18:46:34,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:34,935 INFO L134 CoverageAnalysis]: Checked inductivity of 2139 backedges. 851 proven. 276 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2024-09-20 18:46:34,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:46:34,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480139790] [2024-09-20 18:46:34,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480139790] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:46:34,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1487030597] [2024-09-20 18:46:34,936 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-20 18:46:34,936 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:46:34,936 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:46:34,938 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:46:34,939 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2024-09-20 18:46:35,023 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 24 check-sat command(s) [2024-09-20 18:46:35,023 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:46:35,025 INFO L262 TraceCheckSpWp]: Trace formula consists of 480 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-09-20 18:46:35,027 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:46:35,124 INFO L134 CoverageAnalysis]: Checked inductivity of 2139 backedges. 851 proven. 276 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2024-09-20 18:46:35,124 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:46:35,833 INFO L134 CoverageAnalysis]: Checked inductivity of 2139 backedges. 851 proven. 276 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2024-09-20 18:46:35,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1487030597] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:46:35,833 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:46:35,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51, 51] total 52 [2024-09-20 18:46:35,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25803946] [2024-09-20 18:46:35,833 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:46:35,833 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2024-09-20 18:46:35,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:46:35,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2024-09-20 18:46:35,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=677, Invalid=1975, Unknown=0, NotChecked=0, Total=2652 [2024-09-20 18:46:35,834 INFO L87 Difference]: Start difference. First operand 199 states and 200 transitions. Second operand has 52 states, 52 states have (on average 1.5769230769230769) internal successors, (82), 52 states have internal predecessors, (82), 25 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-09-20 18:46:36,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:46:36,048 INFO L93 Difference]: Finished difference Result 280 states and 305 transitions. [2024-09-20 18:46:36,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2024-09-20 18:46:36,049 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 1.5769230769230769) internal successors, (82), 52 states have internal predecessors, (82), 25 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) Word has length 196 [2024-09-20 18:46:36,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:46:36,050 INFO L225 Difference]: With dead ends: 280 [2024-09-20 18:46:36,050 INFO L226 Difference]: Without dead ends: 200 [2024-09-20 18:46:36,051 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 490 GetRequests, 392 SyntacticMatches, 48 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1883 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=677, Invalid=1975, Unknown=0, NotChecked=0, Total=2652 [2024-09-20 18:46:36,051 INFO L434 NwaCegarLoop]: 55 mSDtfsCounter, 0 mSDsluCounter, 399 mSDsCounter, 0 mSdLazyCounter, 519 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 454 SdHoareTripleChecker+Invalid, 519 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 519 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-20 18:46:36,051 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 454 Invalid, 519 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 519 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-20 18:46:36,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2024-09-20 18:46:36,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 200. [2024-09-20 18:46:36,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 148 states have (on average 1.0135135135135136) internal successors, (150), 149 states have internal predecessors, (150), 26 states have call successors, (26), 26 states have call predecessors, (26), 25 states have return successors, (25), 24 states have call predecessors, (25), 25 states have call successors, (25) [2024-09-20 18:46:36,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 201 transitions. [2024-09-20 18:46:36,067 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 201 transitions. Word has length 196 [2024-09-20 18:46:36,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:46:36,068 INFO L474 AbstractCegarLoop]: Abstraction has 200 states and 201 transitions. [2024-09-20 18:46:36,068 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 1.5769230769230769) internal successors, (82), 52 states have internal predecessors, (82), 25 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-09-20 18:46:36,068 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:46:36,068 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 201 transitions. [2024-09-20 18:46:36,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2024-09-20 18:46:36,069 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:46:36,069 INFO L216 NwaCegarLoop]: trace histogram [24, 24, 24, 24, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:46:36,084 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Ended with exit code 0 [2024-09-20 18:46:36,270 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47,47 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:46:36,270 INFO L399 AbstractCegarLoop]: === Iteration 49 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:46:36,270 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:46:36,270 INFO L85 PathProgramCache]: Analyzing trace with hash 344797177, now seen corresponding path program 46 times [2024-09-20 18:46:36,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:46:36,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645016296] [2024-09-20 18:46:36,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:46:36,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:46:36,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:36,782 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:46:36,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:36,783 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-20 18:46:36,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:36,784 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-20 18:46:36,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:36,784 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-20 18:46:36,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:36,785 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-20 18:46:36,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:36,786 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-09-20 18:46:36,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:36,788 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-20 18:46:36,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:36,789 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-09-20 18:46:36,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:36,790 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-09-20 18:46:36,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:36,791 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-09-20 18:46:36,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:36,793 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-20 18:46:36,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:36,794 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-09-20 18:46:36,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:36,795 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-09-20 18:46:36,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:36,796 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2024-09-20 18:46:36,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:36,797 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-09-20 18:46:36,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:36,799 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2024-09-20 18:46:36,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:36,800 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2024-09-20 18:46:36,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:36,801 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2024-09-20 18:46:36,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:36,802 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2024-09-20 18:46:36,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:36,803 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2024-09-20 18:46:36,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:36,804 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2024-09-20 18:46:36,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:36,806 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2024-09-20 18:46:36,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:36,807 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2024-09-20 18:46:36,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:36,808 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2024-09-20 18:46:36,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:36,809 INFO L134 CoverageAnalysis]: Checked inductivity of 2163 backedges. 322 proven. 829 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2024-09-20 18:46:36,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:46:36,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645016296] [2024-09-20 18:46:36,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645016296] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:46:36,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [772365518] [2024-09-20 18:46:36,809 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-20 18:46:36,809 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:46:36,809 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:46:36,810 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:46:36,811 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2024-09-20 18:46:36,885 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-20 18:46:36,885 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:46:36,887 INFO L262 TraceCheckSpWp]: Trace formula consists of 485 conjuncts, 54 conjuncts are in the unsatisfiable core [2024-09-20 18:46:36,889 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:46:36,997 INFO L134 CoverageAnalysis]: Checked inductivity of 2163 backedges. 346 proven. 805 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2024-09-20 18:46:36,997 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:46:37,528 INFO L134 CoverageAnalysis]: Checked inductivity of 2163 backedges. 346 proven. 805 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2024-09-20 18:46:37,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [772365518] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:46:37,528 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:46:37,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29, 29] total 32 [2024-09-20 18:46:37,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25515921] [2024-09-20 18:46:37,528 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:46:37,529 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-09-20 18:46:37,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:46:37,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-09-20 18:46:37,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=364, Invalid=628, Unknown=0, NotChecked=0, Total=992 [2024-09-20 18:46:37,529 INFO L87 Difference]: Start difference. First operand 200 states and 201 transitions. Second operand has 32 states, 32 states have (on average 2.65625) internal successors, (85), 30 states have internal predecessors, (85), 25 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-09-20 18:46:37,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:46:37,664 INFO L93 Difference]: Finished difference Result 213 states and 215 transitions. [2024-09-20 18:46:37,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-09-20 18:46:37,664 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.65625) internal successors, (85), 30 states have internal predecessors, (85), 25 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) Word has length 197 [2024-09-20 18:46:37,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:46:37,666 INFO L225 Difference]: With dead ends: 213 [2024-09-20 18:46:37,666 INFO L226 Difference]: Without dead ends: 211 [2024-09-20 18:46:37,666 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 494 GetRequests, 415 SyntacticMatches, 48 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 858 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=370, Invalid=686, Unknown=0, NotChecked=0, Total=1056 [2024-09-20 18:46:37,666 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 281 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 18:46:37,667 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 99 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 281 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 18:46:37,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2024-09-20 18:46:37,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 207. [2024-09-20 18:46:37,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 153 states have (on average 1.0130718954248366) internal successors, (155), 154 states have internal predecessors, (155), 27 states have call successors, (27), 27 states have call predecessors, (27), 26 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) [2024-09-20 18:46:37,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 208 transitions. [2024-09-20 18:46:37,683 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 208 transitions. Word has length 197 [2024-09-20 18:46:37,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:46:37,684 INFO L474 AbstractCegarLoop]: Abstraction has 207 states and 208 transitions. [2024-09-20 18:46:37,684 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.65625) internal successors, (85), 30 states have internal predecessors, (85), 25 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-09-20 18:46:37,684 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:46:37,684 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 208 transitions. [2024-09-20 18:46:37,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2024-09-20 18:46:37,685 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:46:37,685 INFO L216 NwaCegarLoop]: trace histogram [25, 25, 25, 24, 24, 24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:46:37,702 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Ended with exit code 0 [2024-09-20 18:46:37,886 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2024-09-20 18:46:37,886 INFO L399 AbstractCegarLoop]: === Iteration 50 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:46:37,886 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:46:37,886 INFO L85 PathProgramCache]: Analyzing trace with hash 767473291, now seen corresponding path program 47 times [2024-09-20 18:46:37,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:46:37,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619624258] [2024-09-20 18:46:37,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:46:37,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:46:37,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:38,884 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:46:38,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:38,885 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-20 18:46:38,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:38,886 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-20 18:46:38,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:38,887 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-20 18:46:38,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:38,888 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-20 18:46:38,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:38,888 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-09-20 18:46:38,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:38,889 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-20 18:46:38,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:38,890 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-09-20 18:46:38,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:38,891 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-09-20 18:46:38,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:38,892 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-09-20 18:46:38,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:38,893 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-20 18:46:38,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:38,893 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-09-20 18:46:38,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:38,894 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-09-20 18:46:38,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:38,895 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2024-09-20 18:46:38,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:38,896 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-09-20 18:46:38,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:38,897 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2024-09-20 18:46:38,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:38,898 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2024-09-20 18:46:38,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:38,899 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2024-09-20 18:46:38,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:38,900 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2024-09-20 18:46:38,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:38,902 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2024-09-20 18:46:38,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:38,903 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2024-09-20 18:46:38,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:38,904 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2024-09-20 18:46:38,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:38,905 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2024-09-20 18:46:38,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:38,905 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2024-09-20 18:46:38,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:38,906 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2024-09-20 18:46:38,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:38,908 INFO L134 CoverageAnalysis]: Checked inductivity of 2328 backedges. 924 proven. 300 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2024-09-20 18:46:38,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:46:38,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619624258] [2024-09-20 18:46:38,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619624258] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:46:38,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [231133237] [2024-09-20 18:46:38,908 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-20 18:46:38,908 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:46:38,909 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:46:38,910 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:46:38,911 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2024-09-20 18:46:38,998 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 25 check-sat command(s) [2024-09-20 18:46:38,998 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:46:39,000 INFO L262 TraceCheckSpWp]: Trace formula consists of 499 conjuncts, 52 conjuncts are in the unsatisfiable core [2024-09-20 18:46:39,003 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:46:39,112 INFO L134 CoverageAnalysis]: Checked inductivity of 2328 backedges. 924 proven. 300 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2024-09-20 18:46:39,112 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:46:39,874 INFO L134 CoverageAnalysis]: Checked inductivity of 2328 backedges. 924 proven. 300 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2024-09-20 18:46:39,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [231133237] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:46:39,874 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:46:39,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53, 53] total 54 [2024-09-20 18:46:39,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152197766] [2024-09-20 18:46:39,875 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:46:39,875 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2024-09-20 18:46:39,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:46:39,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2024-09-20 18:46:39,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=730, Invalid=2132, Unknown=0, NotChecked=0, Total=2862 [2024-09-20 18:46:39,876 INFO L87 Difference]: Start difference. First operand 207 states and 208 transitions. Second operand has 54 states, 54 states have (on average 1.5740740740740742) internal successors, (85), 54 states have internal predecessors, (85), 26 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2024-09-20 18:46:40,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:46:40,076 INFO L93 Difference]: Finished difference Result 291 states and 317 transitions. [2024-09-20 18:46:40,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2024-09-20 18:46:40,077 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 1.5740740740740742) internal successors, (85), 54 states have internal predecessors, (85), 26 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) Word has length 204 [2024-09-20 18:46:40,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:46:40,078 INFO L225 Difference]: With dead ends: 291 [2024-09-20 18:46:40,078 INFO L226 Difference]: Without dead ends: 208 [2024-09-20 18:46:40,078 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 510 GetRequests, 408 SyntacticMatches, 50 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2037 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=730, Invalid=2132, Unknown=0, NotChecked=0, Total=2862 [2024-09-20 18:46:40,079 INFO L434 NwaCegarLoop]: 57 mSDtfsCounter, 0 mSDsluCounter, 324 mSDsCounter, 0 mSdLazyCounter, 453 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 381 SdHoareTripleChecker+Invalid, 453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 453 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-20 18:46:40,079 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 381 Invalid, 453 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 453 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-20 18:46:40,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2024-09-20 18:46:40,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 208. [2024-09-20 18:46:40,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 154 states have (on average 1.0129870129870129) internal successors, (156), 155 states have internal predecessors, (156), 27 states have call successors, (27), 27 states have call predecessors, (27), 26 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) [2024-09-20 18:46:40,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 209 transitions. [2024-09-20 18:46:40,097 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 209 transitions. Word has length 204 [2024-09-20 18:46:40,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:46:40,097 INFO L474 AbstractCegarLoop]: Abstraction has 208 states and 209 transitions. [2024-09-20 18:46:40,098 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 1.5740740740740742) internal successors, (85), 54 states have internal predecessors, (85), 26 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2024-09-20 18:46:40,098 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:46:40,098 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 209 transitions. [2024-09-20 18:46:40,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2024-09-20 18:46:40,099 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:46:40,099 INFO L216 NwaCegarLoop]: trace histogram [25, 25, 25, 25, 24, 24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:46:40,115 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Ended with exit code 0 [2024-09-20 18:46:40,299 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2024-09-20 18:46:40,300 INFO L399 AbstractCegarLoop]: === Iteration 51 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:46:40,300 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:46:40,300 INFO L85 PathProgramCache]: Analyzing trace with hash 1017988887, now seen corresponding path program 48 times [2024-09-20 18:46:40,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:46:40,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730949002] [2024-09-20 18:46:40,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:46:40,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:46:40,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:40,846 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:46:40,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:40,847 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-20 18:46:40,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:40,848 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-20 18:46:40,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:40,849 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-09-20 18:46:40,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:40,850 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-09-20 18:46:40,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:40,851 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-09-20 18:46:40,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:40,852 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-20 18:46:40,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:40,852 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-20 18:46:40,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:40,853 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-09-20 18:46:40,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:40,854 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-09-20 18:46:40,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:40,855 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-09-20 18:46:40,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:40,856 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-09-20 18:46:40,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:40,857 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2024-09-20 18:46:40,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:40,858 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-09-20 18:46:40,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:40,859 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2024-09-20 18:46:40,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:40,860 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-09-20 18:46:40,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:40,860 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2024-09-20 18:46:40,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:40,861 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2024-09-20 18:46:40,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:40,862 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2024-09-20 18:46:40,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:40,863 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2024-09-20 18:46:40,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:40,864 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2024-09-20 18:46:40,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:40,865 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2024-09-20 18:46:40,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:40,866 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2024-09-20 18:46:40,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:40,867 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2024-09-20 18:46:40,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:40,869 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2024-09-20 18:46:40,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:40,870 INFO L134 CoverageAnalysis]: Checked inductivity of 2353 backedges. 348 proven. 901 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2024-09-20 18:46:40,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:46:40,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730949002] [2024-09-20 18:46:40,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730949002] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:46:40,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [177518959] [2024-09-20 18:46:40,871 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-20 18:46:40,871 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:46:40,871 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:46:40,873 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:46:40,874 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2024-09-20 18:46:40,964 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2024-09-20 18:46:40,964 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:46:40,966 INFO L262 TraceCheckSpWp]: Trace formula consists of 504 conjuncts, 56 conjuncts are in the unsatisfiable core [2024-09-20 18:46:40,968 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:46:41,098 INFO L134 CoverageAnalysis]: Checked inductivity of 2353 backedges. 373 proven. 876 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2024-09-20 18:46:41,098 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:46:41,669 INFO L134 CoverageAnalysis]: Checked inductivity of 2353 backedges. 373 proven. 876 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2024-09-20 18:46:41,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [177518959] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:46:41,670 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:46:41,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30, 30] total 33 [2024-09-20 18:46:41,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761509043] [2024-09-20 18:46:41,670 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:46:41,670 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-09-20 18:46:41,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:46:41,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-09-20 18:46:41,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=391, Invalid=665, Unknown=0, NotChecked=0, Total=1056 [2024-09-20 18:46:41,671 INFO L87 Difference]: Start difference. First operand 208 states and 209 transitions. Second operand has 33 states, 33 states have (on average 2.6666666666666665) internal successors, (88), 31 states have internal predecessors, (88), 26 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2024-09-20 18:46:41,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:46:41,812 INFO L93 Difference]: Finished difference Result 221 states and 223 transitions. [2024-09-20 18:46:41,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-09-20 18:46:41,812 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.6666666666666665) internal successors, (88), 31 states have internal predecessors, (88), 26 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) Word has length 205 [2024-09-20 18:46:41,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:46:41,814 INFO L225 Difference]: With dead ends: 221 [2024-09-20 18:46:41,814 INFO L226 Difference]: Without dead ends: 219 [2024-09-20 18:46:41,815 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 514 GetRequests, 432 SyntacticMatches, 50 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 919 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=397, Invalid=725, Unknown=0, NotChecked=0, Total=1122 [2024-09-20 18:46:41,821 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 305 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 18:46:41,821 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 114 Invalid, 306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 305 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 18:46:41,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2024-09-20 18:46:41,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 215. [2024-09-20 18:46:41,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 159 states have (on average 1.0125786163522013) internal successors, (161), 160 states have internal predecessors, (161), 28 states have call successors, (28), 28 states have call predecessors, (28), 27 states have return successors, (27), 26 states have call predecessors, (27), 27 states have call successors, (27) [2024-09-20 18:46:41,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 216 transitions. [2024-09-20 18:46:41,839 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 216 transitions. Word has length 205 [2024-09-20 18:46:41,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:46:41,839 INFO L474 AbstractCegarLoop]: Abstraction has 215 states and 216 transitions. [2024-09-20 18:46:41,839 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.6666666666666665) internal successors, (88), 31 states have internal predecessors, (88), 26 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2024-09-20 18:46:41,839 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:46:41,840 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 216 transitions. [2024-09-20 18:46:41,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2024-09-20 18:46:41,840 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:46:41,841 INFO L216 NwaCegarLoop]: trace histogram [26, 26, 26, 25, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:46:41,858 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2024-09-20 18:46:42,041 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,50 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:46:42,041 INFO L399 AbstractCegarLoop]: === Iteration 52 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:46:42,042 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:46:42,042 INFO L85 PathProgramCache]: Analyzing trace with hash 151650733, now seen corresponding path program 49 times [2024-09-20 18:46:42,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:46:42,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190050886] [2024-09-20 18:46:42,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:46:42,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:46:42,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:43,029 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:46:43,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:43,030 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-20 18:46:43,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:43,031 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-20 18:46:43,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:43,032 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-09-20 18:46:43,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:43,033 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-09-20 18:46:43,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:43,033 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-09-20 18:46:43,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:43,034 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-20 18:46:43,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:43,035 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-20 18:46:43,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:43,036 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-09-20 18:46:43,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:43,037 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-09-20 18:46:43,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:43,037 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-09-20 18:46:43,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:43,038 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-09-20 18:46:43,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:43,039 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2024-09-20 18:46:43,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:43,040 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-09-20 18:46:43,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:43,041 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2024-09-20 18:46:43,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:43,041 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-09-20 18:46:43,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:43,042 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2024-09-20 18:46:43,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:43,043 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2024-09-20 18:46:43,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:43,044 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2024-09-20 18:46:43,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:43,045 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2024-09-20 18:46:43,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:43,045 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2024-09-20 18:46:43,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:43,046 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2024-09-20 18:46:43,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:43,047 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2024-09-20 18:46:43,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:43,048 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2024-09-20 18:46:43,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:43,049 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2024-09-20 18:46:43,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:43,049 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2024-09-20 18:46:43,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:43,051 INFO L134 CoverageAnalysis]: Checked inductivity of 2525 backedges. 1000 proven. 325 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2024-09-20 18:46:43,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:46:43,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190050886] [2024-09-20 18:46:43,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190050886] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:46:43,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [969904607] [2024-09-20 18:46:43,051 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-20 18:46:43,051 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:46:43,051 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:46:43,052 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:46:43,053 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2024-09-20 18:46:43,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:43,131 INFO L262 TraceCheckSpWp]: Trace formula consists of 518 conjuncts, 54 conjuncts are in the unsatisfiable core [2024-09-20 18:46:43,133 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:46:43,236 INFO L134 CoverageAnalysis]: Checked inductivity of 2525 backedges. 1000 proven. 325 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2024-09-20 18:46:43,237 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:46:44,056 INFO L134 CoverageAnalysis]: Checked inductivity of 2525 backedges. 1000 proven. 325 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2024-09-20 18:46:44,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [969904607] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:46:44,057 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:46:44,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 55, 55] total 56 [2024-09-20 18:46:44,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530599547] [2024-09-20 18:46:44,057 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:46:44,057 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2024-09-20 18:46:44,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:46:44,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2024-09-20 18:46:44,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=785, Invalid=2295, Unknown=0, NotChecked=0, Total=3080 [2024-09-20 18:46:44,058 INFO L87 Difference]: Start difference. First operand 215 states and 216 transitions. Second operand has 56 states, 56 states have (on average 1.5714285714285714) internal successors, (88), 56 states have internal predecessors, (88), 27 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2024-09-20 18:46:44,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:46:44,301 INFO L93 Difference]: Finished difference Result 302 states and 329 transitions. [2024-09-20 18:46:44,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2024-09-20 18:46:44,302 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 1.5714285714285714) internal successors, (88), 56 states have internal predecessors, (88), 27 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) Word has length 212 [2024-09-20 18:46:44,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:46:44,304 INFO L225 Difference]: With dead ends: 302 [2024-09-20 18:46:44,304 INFO L226 Difference]: Without dead ends: 216 [2024-09-20 18:46:44,304 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 530 GetRequests, 424 SyntacticMatches, 52 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2197 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=785, Invalid=2295, Unknown=0, NotChecked=0, Total=3080 [2024-09-20 18:46:44,305 INFO L434 NwaCegarLoop]: 59 mSDtfsCounter, 0 mSDsluCounter, 451 mSDsCounter, 0 mSdLazyCounter, 608 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 510 SdHoareTripleChecker+Invalid, 608 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 608 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-20 18:46:44,305 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 510 Invalid, 608 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 608 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-20 18:46:44,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2024-09-20 18:46:44,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2024-09-20 18:46:44,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 160 states have (on average 1.0125) internal successors, (162), 161 states have internal predecessors, (162), 28 states have call successors, (28), 28 states have call predecessors, (28), 27 states have return successors, (27), 26 states have call predecessors, (27), 27 states have call successors, (27) [2024-09-20 18:46:44,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 217 transitions. [2024-09-20 18:46:44,330 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 217 transitions. Word has length 212 [2024-09-20 18:46:44,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:46:44,330 INFO L474 AbstractCegarLoop]: Abstraction has 216 states and 217 transitions. [2024-09-20 18:46:44,330 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 1.5714285714285714) internal successors, (88), 56 states have internal predecessors, (88), 27 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2024-09-20 18:46:44,331 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:46:44,331 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 217 transitions. [2024-09-20 18:46:44,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2024-09-20 18:46:44,332 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:46:44,332 INFO L216 NwaCegarLoop]: trace histogram [26, 26, 26, 26, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:46:44,346 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Ended with exit code 0 [2024-09-20 18:46:44,532 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable51 [2024-09-20 18:46:44,533 INFO L399 AbstractCegarLoop]: === Iteration 53 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:46:44,533 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:46:44,533 INFO L85 PathProgramCache]: Analyzing trace with hash -573225415, now seen corresponding path program 50 times [2024-09-20 18:46:44,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:46:44,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315439951] [2024-09-20 18:46:44,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:46:44,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:46:44,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:45,240 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:46:45,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:45,241 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-20 18:46:45,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:45,242 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-09-20 18:46:45,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:45,243 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-09-20 18:46:45,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:45,244 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-20 18:46:45,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:45,245 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-20 18:46:45,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:45,245 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-20 18:46:45,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:45,246 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-09-20 18:46:45,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:45,247 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-09-20 18:46:45,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:45,248 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-09-20 18:46:45,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:45,249 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-09-20 18:46:45,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:45,249 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-09-20 18:46:45,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:45,250 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-20 18:46:45,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:45,251 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2024-09-20 18:46:45,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:45,252 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-09-20 18:46:45,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:45,253 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2024-09-20 18:46:45,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:45,254 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2024-09-20 18:46:45,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:45,254 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2024-09-20 18:46:45,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:45,255 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-09-20 18:46:45,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:45,256 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2024-09-20 18:46:45,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:45,257 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2024-09-20 18:46:45,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:45,258 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2024-09-20 18:46:45,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:45,259 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2024-09-20 18:46:45,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:45,259 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2024-09-20 18:46:45,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:45,261 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2024-09-20 18:46:45,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:45,262 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2024-09-20 18:46:45,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:45,263 INFO L134 CoverageAnalysis]: Checked inductivity of 2551 backedges. 375 proven. 976 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2024-09-20 18:46:45,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:46:45,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315439951] [2024-09-20 18:46:45,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315439951] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:46:45,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2069472790] [2024-09-20 18:46:45,264 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-20 18:46:45,264 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:46:45,264 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:46:45,266 INFO L229 MonitoredProcess]: Starting monitored process 52 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:46:45,272 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2024-09-20 18:46:45,349 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-20 18:46:45,349 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:46:45,351 INFO L262 TraceCheckSpWp]: Trace formula consists of 523 conjuncts, 55 conjuncts are in the unsatisfiable core [2024-09-20 18:46:45,354 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:46:45,470 INFO L134 CoverageAnalysis]: Checked inductivity of 2551 backedges. 401 proven. 950 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2024-09-20 18:46:45,470 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:46:46,099 INFO L134 CoverageAnalysis]: Checked inductivity of 2551 backedges. 401 proven. 950 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2024-09-20 18:46:46,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2069472790] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:46:46,099 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:46:46,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31, 31] total 34 [2024-09-20 18:46:46,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481939431] [2024-09-20 18:46:46,100 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:46:46,100 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-09-20 18:46:46,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:46:46,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-09-20 18:46:46,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=419, Invalid=703, Unknown=0, NotChecked=0, Total=1122 [2024-09-20 18:46:46,101 INFO L87 Difference]: Start difference. First operand 216 states and 217 transitions. Second operand has 34 states, 34 states have (on average 2.676470588235294) internal successors, (91), 32 states have internal predecessors, (91), 27 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2024-09-20 18:46:46,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:46:46,248 INFO L93 Difference]: Finished difference Result 229 states and 231 transitions. [2024-09-20 18:46:46,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-09-20 18:46:46,249 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.676470588235294) internal successors, (91), 32 states have internal predecessors, (91), 27 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) Word has length 213 [2024-09-20 18:46:46,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:46:46,250 INFO L225 Difference]: With dead ends: 229 [2024-09-20 18:46:46,250 INFO L226 Difference]: Without dead ends: 227 [2024-09-20 18:46:46,250 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 534 GetRequests, 447 SyntacticMatches, 54 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1036 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=425, Invalid=765, Unknown=0, NotChecked=0, Total=1190 [2024-09-20 18:46:46,250 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 300 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 18:46:46,251 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 112 Invalid, 302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 300 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 18:46:46,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2024-09-20 18:46:46,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 223. [2024-09-20 18:46:46,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 165 states have (on average 1.0121212121212122) internal successors, (167), 166 states have internal predecessors, (167), 29 states have call successors, (29), 29 states have call predecessors, (29), 28 states have return successors, (28), 27 states have call predecessors, (28), 28 states have call successors, (28) [2024-09-20 18:46:46,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 224 transitions. [2024-09-20 18:46:46,269 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 224 transitions. Word has length 213 [2024-09-20 18:46:46,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:46:46,269 INFO L474 AbstractCegarLoop]: Abstraction has 223 states and 224 transitions. [2024-09-20 18:46:46,270 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.676470588235294) internal successors, (91), 32 states have internal predecessors, (91), 27 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2024-09-20 18:46:46,270 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:46:46,270 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 224 transitions. [2024-09-20 18:46:46,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2024-09-20 18:46:46,271 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:46:46,271 INFO L216 NwaCegarLoop]: trace histogram [27, 27, 27, 26, 26, 26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:46:46,287 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Forceful destruction successful, exit code 0 [2024-09-20 18:46:46,471 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,52 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:46:46,472 INFO L399 AbstractCegarLoop]: === Iteration 54 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:46:46,472 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:46:46,472 INFO L85 PathProgramCache]: Analyzing trace with hash 899487819, now seen corresponding path program 51 times [2024-09-20 18:46:46,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:46:46,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223549323] [2024-09-20 18:46:46,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:46:46,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:46:46,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:47,525 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:46:47,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:47,526 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-20 18:46:47,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:47,527 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-09-20 18:46:47,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:47,528 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-09-20 18:46:47,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:47,528 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-20 18:46:47,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:47,529 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-20 18:46:47,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:47,530 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-20 18:46:47,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:47,531 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-09-20 18:46:47,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:47,531 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-09-20 18:46:47,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:47,532 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-09-20 18:46:47,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:47,533 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-09-20 18:46:47,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:47,534 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-09-20 18:46:47,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:47,536 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-20 18:46:47,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:47,536 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2024-09-20 18:46:47,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:47,537 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-09-20 18:46:47,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:47,538 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2024-09-20 18:46:47,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:47,539 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2024-09-20 18:46:47,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:47,540 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2024-09-20 18:46:47,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:47,541 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-09-20 18:46:47,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:47,541 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2024-09-20 18:46:47,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:47,542 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2024-09-20 18:46:47,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:47,543 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2024-09-20 18:46:47,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:47,544 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2024-09-20 18:46:47,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:47,545 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2024-09-20 18:46:47,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:47,545 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2024-09-20 18:46:47,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:47,546 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2024-09-20 18:46:47,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:47,547 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2024-09-20 18:46:47,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:47,548 INFO L134 CoverageAnalysis]: Checked inductivity of 2730 backedges. 1079 proven. 351 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-09-20 18:46:47,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:46:47,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223549323] [2024-09-20 18:46:47,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223549323] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:46:47,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1051650045] [2024-09-20 18:46:47,549 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-20 18:46:47,549 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:46:47,549 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:46:47,550 INFO L229 MonitoredProcess]: Starting monitored process 53 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:46:47,552 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2024-09-20 18:46:47,647 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 27 check-sat command(s) [2024-09-20 18:46:47,647 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:46:47,649 INFO L262 TraceCheckSpWp]: Trace formula consists of 537 conjuncts, 56 conjuncts are in the unsatisfiable core [2024-09-20 18:46:47,651 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:46:47,758 INFO L134 CoverageAnalysis]: Checked inductivity of 2730 backedges. 1079 proven. 351 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-09-20 18:46:47,759 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:46:48,626 INFO L134 CoverageAnalysis]: Checked inductivity of 2730 backedges. 1079 proven. 351 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-09-20 18:46:48,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1051650045] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:46:48,626 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:46:48,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 57, 57] total 58 [2024-09-20 18:46:48,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404394278] [2024-09-20 18:46:48,626 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:46:48,627 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2024-09-20 18:46:48,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:46:48,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2024-09-20 18:46:48,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=842, Invalid=2464, Unknown=0, NotChecked=0, Total=3306 [2024-09-20 18:46:48,628 INFO L87 Difference]: Start difference. First operand 223 states and 224 transitions. Second operand has 58 states, 58 states have (on average 1.5689655172413792) internal successors, (91), 58 states have internal predecessors, (91), 28 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2024-09-20 18:46:48,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:46:48,927 INFO L93 Difference]: Finished difference Result 313 states and 341 transitions. [2024-09-20 18:46:48,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2024-09-20 18:46:48,928 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 1.5689655172413792) internal successors, (91), 58 states have internal predecessors, (91), 28 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) Word has length 220 [2024-09-20 18:46:48,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:46:48,930 INFO L225 Difference]: With dead ends: 313 [2024-09-20 18:46:48,930 INFO L226 Difference]: Without dead ends: 224 [2024-09-20 18:46:48,931 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 550 GetRequests, 440 SyntacticMatches, 54 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2363 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=842, Invalid=2464, Unknown=0, NotChecked=0, Total=3306 [2024-09-20 18:46:48,931 INFO L434 NwaCegarLoop]: 61 mSDtfsCounter, 0 mSDsluCounter, 561 mSDsCounter, 0 mSdLazyCounter, 678 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 622 SdHoareTripleChecker+Invalid, 678 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 678 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-20 18:46:48,931 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 622 Invalid, 678 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 678 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-20 18:46:48,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2024-09-20 18:46:48,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 224. [2024-09-20 18:46:48,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 166 states have (on average 1.0120481927710843) internal successors, (168), 167 states have internal predecessors, (168), 29 states have call successors, (29), 29 states have call predecessors, (29), 28 states have return successors, (28), 27 states have call predecessors, (28), 28 states have call successors, (28) [2024-09-20 18:46:48,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 225 transitions. [2024-09-20 18:46:48,953 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 225 transitions. Word has length 220 [2024-09-20 18:46:48,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:46:48,954 INFO L474 AbstractCegarLoop]: Abstraction has 224 states and 225 transitions. [2024-09-20 18:46:48,954 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 1.5689655172413792) internal successors, (91), 58 states have internal predecessors, (91), 28 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2024-09-20 18:46:48,954 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:46:48,954 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 225 transitions. [2024-09-20 18:46:48,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2024-09-20 18:46:48,955 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:46:48,955 INFO L216 NwaCegarLoop]: trace histogram [27, 27, 27, 27, 26, 26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:46:48,968 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Ended with exit code 0 [2024-09-20 18:46:49,156 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,53 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:46:49,156 INFO L399 AbstractCegarLoop]: === Iteration 55 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:46:49,156 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:46:49,156 INFO L85 PathProgramCache]: Analyzing trace with hash 1381044439, now seen corresponding path program 52 times [2024-09-20 18:46:49,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:46:49,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144631260] [2024-09-20 18:46:49,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:46:49,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:46:49,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:49,797 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:46:49,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:49,798 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-09-20 18:46:49,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:49,799 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-20 18:46:49,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:49,800 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-09-20 18:46:49,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:49,801 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-20 18:46:49,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:49,802 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-20 18:46:49,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:49,802 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-09-20 18:46:49,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:49,803 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-09-20 18:46:49,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:49,804 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-09-20 18:46:49,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:49,806 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-09-20 18:46:49,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:49,806 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-09-20 18:46:49,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:49,807 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-20 18:46:49,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:49,808 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2024-09-20 18:46:49,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:49,809 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2024-09-20 18:46:49,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:49,810 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2024-09-20 18:46:49,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:49,810 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2024-09-20 18:46:49,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:49,811 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2024-09-20 18:46:49,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:49,812 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-09-20 18:46:49,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:49,813 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2024-09-20 18:46:49,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:49,814 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2024-09-20 18:46:49,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:49,815 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2024-09-20 18:46:49,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:49,821 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2024-09-20 18:46:49,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:49,822 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2024-09-20 18:46:49,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:49,823 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2024-09-20 18:46:49,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:49,824 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2024-09-20 18:46:49,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:49,825 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2024-09-20 18:46:49,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:49,826 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2024-09-20 18:46:49,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:49,827 INFO L134 CoverageAnalysis]: Checked inductivity of 2757 backedges. 403 proven. 1054 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-09-20 18:46:49,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:46:49,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144631260] [2024-09-20 18:46:49,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144631260] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:46:49,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1883618296] [2024-09-20 18:46:49,828 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-20 18:46:49,828 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:46:49,828 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:46:49,829 INFO L229 MonitoredProcess]: Starting monitored process 54 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:46:49,830 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2024-09-20 18:46:49,912 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-20 18:46:49,913 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:46:49,915 INFO L262 TraceCheckSpWp]: Trace formula consists of 542 conjuncts, 60 conjuncts are in the unsatisfiable core [2024-09-20 18:46:49,917 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:46:50,038 INFO L134 CoverageAnalysis]: Checked inductivity of 2757 backedges. 430 proven. 1027 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-09-20 18:46:50,038 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:46:50,687 INFO L134 CoverageAnalysis]: Checked inductivity of 2757 backedges. 430 proven. 1027 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-09-20 18:46:50,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1883618296] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:46:50,687 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:46:50,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32, 32] total 35 [2024-09-20 18:46:50,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725263337] [2024-09-20 18:46:50,688 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:46:50,688 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-09-20 18:46:50,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:46:50,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-09-20 18:46:50,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=448, Invalid=742, Unknown=0, NotChecked=0, Total=1190 [2024-09-20 18:46:50,689 INFO L87 Difference]: Start difference. First operand 224 states and 225 transitions. Second operand has 35 states, 35 states have (on average 2.6857142857142855) internal successors, (94), 33 states have internal predecessors, (94), 28 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2024-09-20 18:46:50,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:46:50,850 INFO L93 Difference]: Finished difference Result 237 states and 239 transitions. [2024-09-20 18:46:50,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-09-20 18:46:50,850 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.6857142857142855) internal successors, (94), 33 states have internal predecessors, (94), 28 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) Word has length 221 [2024-09-20 18:46:50,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:46:50,851 INFO L225 Difference]: With dead ends: 237 [2024-09-20 18:46:50,851 INFO L226 Difference]: Without dead ends: 235 [2024-09-20 18:46:50,852 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 554 GetRequests, 466 SyntacticMatches, 54 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1047 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=454, Invalid=806, Unknown=0, NotChecked=0, Total=1260 [2024-09-20 18:46:50,852 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 359 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 359 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 18:46:50,852 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 113 Invalid, 360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 359 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 18:46:50,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2024-09-20 18:46:50,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 231. [2024-09-20 18:46:50,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 171 states have (on average 1.0116959064327486) internal successors, (173), 172 states have internal predecessors, (173), 30 states have call successors, (30), 30 states have call predecessors, (30), 29 states have return successors, (29), 28 states have call predecessors, (29), 29 states have call successors, (29) [2024-09-20 18:46:50,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 232 transitions. [2024-09-20 18:46:50,871 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 232 transitions. Word has length 221 [2024-09-20 18:46:50,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:46:50,872 INFO L474 AbstractCegarLoop]: Abstraction has 231 states and 232 transitions. [2024-09-20 18:46:50,872 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 2.6857142857142855) internal successors, (94), 33 states have internal predecessors, (94), 28 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2024-09-20 18:46:50,872 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:46:50,872 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 232 transitions. [2024-09-20 18:46:50,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2024-09-20 18:46:50,873 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:46:50,873 INFO L216 NwaCegarLoop]: trace histogram [28, 28, 28, 27, 27, 27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:46:50,886 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Ended with exit code 0 [2024-09-20 18:46:51,074 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable54 [2024-09-20 18:46:51,074 INFO L399 AbstractCegarLoop]: === Iteration 56 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:46:51,074 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:46:51,074 INFO L85 PathProgramCache]: Analyzing trace with hash -1692155923, now seen corresponding path program 53 times [2024-09-20 18:46:51,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:46:51,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541821014] [2024-09-20 18:46:51,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:46:51,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:46:51,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:52,244 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:46:52,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:52,246 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-09-20 18:46:52,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:52,246 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-20 18:46:52,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:52,247 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-09-20 18:46:52,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:52,248 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-20 18:46:52,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:52,249 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-20 18:46:52,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:52,250 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-09-20 18:46:52,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:52,251 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-09-20 18:46:52,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:52,252 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-09-20 18:46:52,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:52,252 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-09-20 18:46:52,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:52,253 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-09-20 18:46:52,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:52,254 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-20 18:46:52,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:52,255 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2024-09-20 18:46:52,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:52,256 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2024-09-20 18:46:52,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:52,256 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2024-09-20 18:46:52,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:52,257 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2024-09-20 18:46:52,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:52,258 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2024-09-20 18:46:52,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:52,259 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-09-20 18:46:52,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:52,260 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2024-09-20 18:46:52,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:52,260 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2024-09-20 18:46:52,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:52,261 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2024-09-20 18:46:52,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:52,262 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2024-09-20 18:46:52,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:52,263 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2024-09-20 18:46:52,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:52,264 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2024-09-20 18:46:52,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:52,264 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2024-09-20 18:46:52,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:52,265 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2024-09-20 18:46:52,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:52,266 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2024-09-20 18:46:52,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:52,267 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2024-09-20 18:46:52,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:52,269 INFO L134 CoverageAnalysis]: Checked inductivity of 2943 backedges. 1161 proven. 378 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-09-20 18:46:52,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:46:52,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541821014] [2024-09-20 18:46:52,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541821014] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:46:52,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1391477219] [2024-09-20 18:46:52,269 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-20 18:46:52,269 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:46:52,269 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:46:52,271 INFO L229 MonitoredProcess]: Starting monitored process 55 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:46:52,272 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2024-09-20 18:46:52,368 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 28 check-sat command(s) [2024-09-20 18:46:52,369 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:46:52,370 INFO L262 TraceCheckSpWp]: Trace formula consists of 556 conjuncts, 58 conjuncts are in the unsatisfiable core [2024-09-20 18:46:52,373 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:46:52,479 INFO L134 CoverageAnalysis]: Checked inductivity of 2943 backedges. 1161 proven. 378 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-09-20 18:46:52,479 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:46:53,401 INFO L134 CoverageAnalysis]: Checked inductivity of 2943 backedges. 1161 proven. 378 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-09-20 18:46:53,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1391477219] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:46:53,402 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:46:53,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 59, 59] total 60 [2024-09-20 18:46:53,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763759443] [2024-09-20 18:46:53,402 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:46:53,402 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2024-09-20 18:46:53,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:46:53,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2024-09-20 18:46:53,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=901, Invalid=2639, Unknown=0, NotChecked=0, Total=3540 [2024-09-20 18:46:53,403 INFO L87 Difference]: Start difference. First operand 231 states and 232 transitions. Second operand has 60 states, 60 states have (on average 1.5666666666666667) internal successors, (94), 60 states have internal predecessors, (94), 29 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2024-09-20 18:46:53,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:46:53,627 INFO L93 Difference]: Finished difference Result 324 states and 353 transitions. [2024-09-20 18:46:53,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2024-09-20 18:46:53,627 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 1.5666666666666667) internal successors, (94), 60 states have internal predecessors, (94), 29 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) Word has length 228 [2024-09-20 18:46:53,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:46:53,629 INFO L225 Difference]: With dead ends: 324 [2024-09-20 18:46:53,629 INFO L226 Difference]: Without dead ends: 232 [2024-09-20 18:46:53,629 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 570 GetRequests, 456 SyntacticMatches, 56 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2535 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=901, Invalid=2639, Unknown=0, NotChecked=0, Total=3540 [2024-09-20 18:46:53,630 INFO L434 NwaCegarLoop]: 63 mSDtfsCounter, 0 mSDsluCounter, 269 mSDsCounter, 0 mSdLazyCounter, 486 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 332 SdHoareTripleChecker+Invalid, 486 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 486 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-20 18:46:53,630 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 332 Invalid, 486 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 486 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-20 18:46:53,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2024-09-20 18:46:53,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 232. [2024-09-20 18:46:53,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 172 states have (on average 1.0116279069767442) internal successors, (174), 173 states have internal predecessors, (174), 30 states have call successors, (30), 30 states have call predecessors, (30), 29 states have return successors, (29), 28 states have call predecessors, (29), 29 states have call successors, (29) [2024-09-20 18:46:53,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 233 transitions. [2024-09-20 18:46:53,650 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 233 transitions. Word has length 228 [2024-09-20 18:46:53,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:46:53,650 INFO L474 AbstractCegarLoop]: Abstraction has 232 states and 233 transitions. [2024-09-20 18:46:53,650 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 1.5666666666666667) internal successors, (94), 60 states have internal predecessors, (94), 29 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2024-09-20 18:46:53,650 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:46:53,650 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 233 transitions. [2024-09-20 18:46:53,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2024-09-20 18:46:53,651 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:46:53,652 INFO L216 NwaCegarLoop]: trace histogram [28, 28, 28, 28, 27, 27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:46:53,668 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Forceful destruction successful, exit code 0 [2024-09-20 18:46:53,852 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55,55 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:46:53,852 INFO L399 AbstractCegarLoop]: === Iteration 57 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:46:53,852 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:46:53,853 INFO L85 PathProgramCache]: Analyzing trace with hash -1244894087, now seen corresponding path program 54 times [2024-09-20 18:46:53,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:46:53,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766482105] [2024-09-20 18:46:53,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:46:53,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:46:53,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:54,517 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:46:54,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:54,518 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-20 18:46:54,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:54,519 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-09-20 18:46:54,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:54,520 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-20 18:46:54,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:54,520 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-09-20 18:46:54,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:54,521 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-20 18:46:54,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:54,522 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-09-20 18:46:54,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:54,523 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-09-20 18:46:54,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:54,524 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-09-20 18:46:54,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:54,524 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-09-20 18:46:54,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:54,525 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-09-20 18:46:54,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:54,526 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-09-20 18:46:54,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:54,527 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2024-09-20 18:46:54,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:54,528 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2024-09-20 18:46:54,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:54,528 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2024-09-20 18:46:54,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:54,529 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2024-09-20 18:46:54,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:54,530 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2024-09-20 18:46:54,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:54,531 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2024-09-20 18:46:54,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:54,532 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2024-09-20 18:46:54,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:54,533 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2024-09-20 18:46:54,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:54,533 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2024-09-20 18:46:54,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:54,534 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2024-09-20 18:46:54,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:54,535 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2024-09-20 18:46:54,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:54,536 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2024-09-20 18:46:54,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:54,537 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2024-09-20 18:46:54,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:54,538 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2024-09-20 18:46:54,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:54,538 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2024-09-20 18:46:54,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:54,539 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2024-09-20 18:46:54,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:54,540 INFO L134 CoverageAnalysis]: Checked inductivity of 2971 backedges. 432 proven. 1135 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-09-20 18:46:54,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:46:54,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766482105] [2024-09-20 18:46:54,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766482105] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:46:54,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1294563388] [2024-09-20 18:46:54,541 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-20 18:46:54,541 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:46:54,541 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:46:54,542 INFO L229 MonitoredProcess]: Starting monitored process 56 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:46:54,543 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2024-09-20 18:46:54,642 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 28 check-sat command(s) [2024-09-20 18:46:54,642 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:46:54,644 INFO L262 TraceCheckSpWp]: Trace formula consists of 561 conjuncts, 62 conjuncts are in the unsatisfiable core [2024-09-20 18:46:54,646 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:46:54,770 INFO L134 CoverageAnalysis]: Checked inductivity of 2971 backedges. 460 proven. 1107 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-09-20 18:46:54,770 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:46:55,461 INFO L134 CoverageAnalysis]: Checked inductivity of 2971 backedges. 460 proven. 1107 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-09-20 18:46:55,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1294563388] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:46:55,462 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:46:55,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33, 33] total 36 [2024-09-20 18:46:55,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781167622] [2024-09-20 18:46:55,462 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:46:55,462 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-09-20 18:46:55,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:46:55,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-09-20 18:46:55,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=478, Invalid=782, Unknown=0, NotChecked=0, Total=1260 [2024-09-20 18:46:55,463 INFO L87 Difference]: Start difference. First operand 232 states and 233 transitions. Second operand has 36 states, 36 states have (on average 2.6944444444444446) internal successors, (97), 34 states have internal predecessors, (97), 29 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2024-09-20 18:46:55,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:46:55,626 INFO L93 Difference]: Finished difference Result 245 states and 247 transitions. [2024-09-20 18:46:55,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-09-20 18:46:55,626 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 2.6944444444444446) internal successors, (97), 34 states have internal predecessors, (97), 29 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) Word has length 229 [2024-09-20 18:46:55,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:46:55,627 INFO L225 Difference]: With dead ends: 245 [2024-09-20 18:46:55,628 INFO L226 Difference]: Without dead ends: 243 [2024-09-20 18:46:55,628 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 574 GetRequests, 483 SyntacticMatches, 56 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1114 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=484, Invalid=848, Unknown=0, NotChecked=0, Total=1332 [2024-09-20 18:46:55,628 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 315 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 18:46:55,628 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 104 Invalid, 317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 315 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 18:46:55,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2024-09-20 18:46:55,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 239. [2024-09-20 18:46:55,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 177 states have (on average 1.0112994350282485) internal successors, (179), 178 states have internal predecessors, (179), 31 states have call successors, (31), 31 states have call predecessors, (31), 30 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) [2024-09-20 18:46:55,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 240 transitions. [2024-09-20 18:46:55,647 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 240 transitions. Word has length 229 [2024-09-20 18:46:55,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:46:55,647 INFO L474 AbstractCegarLoop]: Abstraction has 239 states and 240 transitions. [2024-09-20 18:46:55,647 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 2.6944444444444446) internal successors, (97), 34 states have internal predecessors, (97), 29 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2024-09-20 18:46:55,647 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:46:55,647 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 240 transitions. [2024-09-20 18:46:55,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2024-09-20 18:46:55,648 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:46:55,648 INFO L216 NwaCegarLoop]: trace histogram [29, 29, 29, 28, 28, 28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:46:55,660 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Forceful destruction successful, exit code 0 [2024-09-20 18:46:55,848 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56,56 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:46:55,849 INFO L399 AbstractCegarLoop]: === Iteration 58 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:46:55,849 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:46:55,849 INFO L85 PathProgramCache]: Analyzing trace with hash 783968779, now seen corresponding path program 55 times [2024-09-20 18:46:55,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:46:55,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043939390] [2024-09-20 18:46:55,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:46:55,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:46:55,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:57,047 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:46:57,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:57,048 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-20 18:46:57,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:57,049 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-09-20 18:46:57,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:57,050 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-20 18:46:57,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:57,051 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-09-20 18:46:57,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:57,052 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-20 18:46:57,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:57,052 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-09-20 18:46:57,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:57,053 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-09-20 18:46:57,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:57,054 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-09-20 18:46:57,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:57,055 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-09-20 18:46:57,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:57,055 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-09-20 18:46:57,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:57,056 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-09-20 18:46:57,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:57,057 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2024-09-20 18:46:57,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:57,058 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2024-09-20 18:46:57,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:57,059 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2024-09-20 18:46:57,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:57,060 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2024-09-20 18:46:57,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:57,061 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2024-09-20 18:46:57,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:57,062 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2024-09-20 18:46:57,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:57,063 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2024-09-20 18:46:57,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:57,064 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2024-09-20 18:46:57,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:57,066 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2024-09-20 18:46:57,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:57,067 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2024-09-20 18:46:57,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:57,068 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2024-09-20 18:46:57,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:57,069 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2024-09-20 18:46:57,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:57,071 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2024-09-20 18:46:57,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:57,072 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2024-09-20 18:46:57,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:57,073 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2024-09-20 18:46:57,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:57,074 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2024-09-20 18:46:57,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:57,075 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2024-09-20 18:46:57,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:57,077 INFO L134 CoverageAnalysis]: Checked inductivity of 3164 backedges. 1246 proven. 406 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2024-09-20 18:46:57,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:46:57,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043939390] [2024-09-20 18:46:57,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043939390] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:46:57,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1929825609] [2024-09-20 18:46:57,078 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-20 18:46:57,078 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:46:57,078 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:46:57,079 INFO L229 MonitoredProcess]: Starting monitored process 57 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:46:57,080 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2024-09-20 18:46:57,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:57,162 INFO L262 TraceCheckSpWp]: Trace formula consists of 575 conjuncts, 60 conjuncts are in the unsatisfiable core [2024-09-20 18:46:57,164 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:46:57,270 INFO L134 CoverageAnalysis]: Checked inductivity of 3164 backedges. 1246 proven. 406 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2024-09-20 18:46:57,270 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:46:58,251 INFO L134 CoverageAnalysis]: Checked inductivity of 3164 backedges. 1246 proven. 406 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2024-09-20 18:46:58,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1929825609] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:46:58,252 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:46:58,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61, 61] total 62 [2024-09-20 18:46:58,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107188939] [2024-09-20 18:46:58,252 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:46:58,252 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2024-09-20 18:46:58,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:46:58,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2024-09-20 18:46:58,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=962, Invalid=2820, Unknown=0, NotChecked=0, Total=3782 [2024-09-20 18:46:58,253 INFO L87 Difference]: Start difference. First operand 239 states and 240 transitions. Second operand has 62 states, 62 states have (on average 1.564516129032258) internal successors, (97), 62 states have internal predecessors, (97), 30 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2024-09-20 18:46:58,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:46:58,536 INFO L93 Difference]: Finished difference Result 335 states and 365 transitions. [2024-09-20 18:46:58,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2024-09-20 18:46:58,536 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 1.564516129032258) internal successors, (97), 62 states have internal predecessors, (97), 30 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) Word has length 236 [2024-09-20 18:46:58,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:46:58,537 INFO L225 Difference]: With dead ends: 335 [2024-09-20 18:46:58,538 INFO L226 Difference]: Without dead ends: 240 [2024-09-20 18:46:58,538 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 590 GetRequests, 472 SyntacticMatches, 58 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2713 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=962, Invalid=2820, Unknown=0, NotChecked=0, Total=3782 [2024-09-20 18:46:58,539 INFO L434 NwaCegarLoop]: 65 mSDtfsCounter, 0 mSDsluCounter, 432 mSDsCounter, 0 mSdLazyCounter, 645 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 497 SdHoareTripleChecker+Invalid, 645 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 645 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-20 18:46:58,539 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 497 Invalid, 645 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 645 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-20 18:46:58,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2024-09-20 18:46:58,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 240. [2024-09-20 18:46:58,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 178 states have (on average 1.0112359550561798) internal successors, (180), 179 states have internal predecessors, (180), 31 states have call successors, (31), 31 states have call predecessors, (31), 30 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) [2024-09-20 18:46:58,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 241 transitions. [2024-09-20 18:46:58,560 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 241 transitions. Word has length 236 [2024-09-20 18:46:58,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:46:58,560 INFO L474 AbstractCegarLoop]: Abstraction has 240 states and 241 transitions. [2024-09-20 18:46:58,560 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 1.564516129032258) internal successors, (97), 62 states have internal predecessors, (97), 30 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2024-09-20 18:46:58,560 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:46:58,560 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 241 transitions. [2024-09-20 18:46:58,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2024-09-20 18:46:58,561 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:46:58,562 INFO L216 NwaCegarLoop]: trace histogram [29, 29, 29, 29, 28, 28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:46:58,578 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Ended with exit code 0 [2024-09-20 18:46:58,762 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2024-09-20 18:46:58,762 INFO L399 AbstractCegarLoop]: === Iteration 59 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:46:58,763 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:46:58,763 INFO L85 PathProgramCache]: Analyzing trace with hash 828623511, now seen corresponding path program 56 times [2024-09-20 18:46:58,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:46:58,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690391063] [2024-09-20 18:46:58,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:46:58,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:46:58,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:59,491 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:46:59,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:59,492 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-20 18:46:59,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:59,494 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-09-20 18:46:59,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:59,495 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-20 18:46:59,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:59,496 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-09-20 18:46:59,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:59,497 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-09-20 18:46:59,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:59,498 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-09-20 18:46:59,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:59,499 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-09-20 18:46:59,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:59,500 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-09-20 18:46:59,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:59,502 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-09-20 18:46:59,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:59,503 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2024-09-20 18:46:59,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:59,504 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-09-20 18:46:59,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:59,505 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2024-09-20 18:46:59,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:59,506 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-09-20 18:46:59,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:59,507 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2024-09-20 18:46:59,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:59,508 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2024-09-20 18:46:59,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:59,510 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2024-09-20 18:46:59,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:59,511 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-09-20 18:46:59,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:59,512 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2024-09-20 18:46:59,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:59,513 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2024-09-20 18:46:59,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:59,515 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2024-09-20 18:46:59,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:59,516 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2024-09-20 18:46:59,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:59,517 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2024-09-20 18:46:59,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:59,518 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2024-09-20 18:46:59,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:59,519 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2024-09-20 18:46:59,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:59,521 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2024-09-20 18:46:59,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:59,522 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2024-09-20 18:46:59,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:59,523 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2024-09-20 18:46:59,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:59,524 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2024-09-20 18:46:59,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:59,526 INFO L134 CoverageAnalysis]: Checked inductivity of 3193 backedges. 462 proven. 1219 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2024-09-20 18:46:59,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:46:59,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690391063] [2024-09-20 18:46:59,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690391063] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:46:59,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [158153288] [2024-09-20 18:46:59,526 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-20 18:46:59,527 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:46:59,527 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:46:59,528 INFO L229 MonitoredProcess]: Starting monitored process 58 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:46:59,529 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2024-09-20 18:46:59,630 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-20 18:46:59,630 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:46:59,633 INFO L262 TraceCheckSpWp]: Trace formula consists of 580 conjuncts, 61 conjuncts are in the unsatisfiable core [2024-09-20 18:46:59,636 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:46:59,808 INFO L134 CoverageAnalysis]: Checked inductivity of 3193 backedges. 491 proven. 1190 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2024-09-20 18:46:59,808 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:47:00,590 INFO L134 CoverageAnalysis]: Checked inductivity of 3193 backedges. 491 proven. 1190 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2024-09-20 18:47:00,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [158153288] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:47:00,591 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:47:00,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34, 34] total 37 [2024-09-20 18:47:00,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721892368] [2024-09-20 18:47:00,591 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:47:00,591 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-09-20 18:47:00,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:47:00,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-09-20 18:47:00,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=509, Invalid=823, Unknown=0, NotChecked=0, Total=1332 [2024-09-20 18:47:00,592 INFO L87 Difference]: Start difference. First operand 240 states and 241 transitions. Second operand has 37 states, 37 states have (on average 2.7027027027027026) internal successors, (100), 35 states have internal predecessors, (100), 30 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2024-09-20 18:47:00,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:47:00,764 INFO L93 Difference]: Finished difference Result 253 states and 255 transitions. [2024-09-20 18:47:00,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-09-20 18:47:00,765 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 2.7027027027027026) internal successors, (100), 35 states have internal predecessors, (100), 30 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) Word has length 237 [2024-09-20 18:47:00,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:47:00,767 INFO L225 Difference]: With dead ends: 253 [2024-09-20 18:47:00,767 INFO L226 Difference]: Without dead ends: 251 [2024-09-20 18:47:00,767 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 594 GetRequests, 498 SyntacticMatches, 60 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1243 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=515, Invalid=891, Unknown=0, NotChecked=0, Total=1406 [2024-09-20 18:47:00,767 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 329 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 329 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 18:47:00,767 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 91 Invalid, 330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 329 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 18:47:00,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2024-09-20 18:47:00,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 247. [2024-09-20 18:47:00,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 183 states have (on average 1.010928961748634) internal successors, (185), 184 states have internal predecessors, (185), 32 states have call successors, (32), 32 states have call predecessors, (32), 31 states have return successors, (31), 30 states have call predecessors, (31), 31 states have call successors, (31) [2024-09-20 18:47:00,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 248 transitions. [2024-09-20 18:47:00,790 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 248 transitions. Word has length 237 [2024-09-20 18:47:00,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:47:00,790 INFO L474 AbstractCegarLoop]: Abstraction has 247 states and 248 transitions. [2024-09-20 18:47:00,791 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 2.7027027027027026) internal successors, (100), 35 states have internal predecessors, (100), 30 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2024-09-20 18:47:00,791 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:47:00,791 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 248 transitions. [2024-09-20 18:47:00,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2024-09-20 18:47:00,792 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:47:00,792 INFO L216 NwaCegarLoop]: trace histogram [30, 30, 30, 29, 29, 29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:47:00,809 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Ended with exit code 0 [2024-09-20 18:47:00,996 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2024-09-20 18:47:00,996 INFO L399 AbstractCegarLoop]: === Iteration 60 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:47:00,997 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:47:00,997 INFO L85 PathProgramCache]: Analyzing trace with hash -1507815891, now seen corresponding path program 57 times [2024-09-20 18:47:00,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:47:00,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346967351] [2024-09-20 18:47:00,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:47:00,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:47:01,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:02,353 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:47:02,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:02,354 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-20 18:47:02,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:02,355 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-09-20 18:47:02,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:02,356 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-20 18:47:02,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:02,357 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-09-20 18:47:02,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:02,358 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-09-20 18:47:02,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:02,358 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-09-20 18:47:02,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:02,359 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-09-20 18:47:02,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:02,360 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-09-20 18:47:02,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:02,361 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-09-20 18:47:02,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:02,362 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2024-09-20 18:47:02,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:02,362 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-09-20 18:47:02,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:02,363 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2024-09-20 18:47:02,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:02,364 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-09-20 18:47:02,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:02,365 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2024-09-20 18:47:02,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:02,365 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2024-09-20 18:47:02,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:02,366 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2024-09-20 18:47:02,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:02,367 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-09-20 18:47:02,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:02,368 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2024-09-20 18:47:02,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:02,369 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2024-09-20 18:47:02,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:02,369 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2024-09-20 18:47:02,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:02,371 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2024-09-20 18:47:02,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:02,371 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2024-09-20 18:47:02,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:02,372 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2024-09-20 18:47:02,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:02,373 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2024-09-20 18:47:02,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:02,374 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2024-09-20 18:47:02,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:02,375 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2024-09-20 18:47:02,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:02,376 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2024-09-20 18:47:02,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:02,376 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2024-09-20 18:47:02,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:02,377 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2024-09-20 18:47:02,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:02,378 INFO L134 CoverageAnalysis]: Checked inductivity of 3393 backedges. 1334 proven. 435 refuted. 0 times theorem prover too weak. 1624 trivial. 0 not checked. [2024-09-20 18:47:02,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:47:02,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346967351] [2024-09-20 18:47:02,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346967351] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:47:02,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1690720014] [2024-09-20 18:47:02,379 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-20 18:47:02,379 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:47:02,379 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:47:02,380 INFO L229 MonitoredProcess]: Starting monitored process 59 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:47:02,381 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2024-09-20 18:47:02,515 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 30 check-sat command(s) [2024-09-20 18:47:02,515 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:47:02,518 INFO L262 TraceCheckSpWp]: Trace formula consists of 594 conjuncts, 62 conjuncts are in the unsatisfiable core [2024-09-20 18:47:02,521 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:47:02,693 INFO L134 CoverageAnalysis]: Checked inductivity of 3393 backedges. 1334 proven. 435 refuted. 0 times theorem prover too weak. 1624 trivial. 0 not checked. [2024-09-20 18:47:02,694 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:47:03,748 INFO L134 CoverageAnalysis]: Checked inductivity of 3393 backedges. 1334 proven. 435 refuted. 0 times theorem prover too weak. 1624 trivial. 0 not checked. [2024-09-20 18:47:03,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1690720014] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:47:03,748 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:47:03,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 63, 63] total 64 [2024-09-20 18:47:03,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653143421] [2024-09-20 18:47:03,748 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:47:03,749 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2024-09-20 18:47:03,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:47:03,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2024-09-20 18:47:03,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1025, Invalid=3007, Unknown=0, NotChecked=0, Total=4032 [2024-09-20 18:47:03,750 INFO L87 Difference]: Start difference. First operand 247 states and 248 transitions. Second operand has 64 states, 64 states have (on average 1.5625) internal successors, (100), 64 states have internal predecessors, (100), 31 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2024-09-20 18:47:04,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:47:04,003 INFO L93 Difference]: Finished difference Result 346 states and 377 transitions. [2024-09-20 18:47:04,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2024-09-20 18:47:04,003 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 1.5625) internal successors, (100), 64 states have internal predecessors, (100), 31 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) Word has length 244 [2024-09-20 18:47:04,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:47:04,005 INFO L225 Difference]: With dead ends: 346 [2024-09-20 18:47:04,005 INFO L226 Difference]: Without dead ends: 248 [2024-09-20 18:47:04,006 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 610 GetRequests, 488 SyntacticMatches, 60 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2897 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1025, Invalid=3007, Unknown=0, NotChecked=0, Total=4032 [2024-09-20 18:47:04,006 INFO L434 NwaCegarLoop]: 67 mSDtfsCounter, 0 mSDsluCounter, 313 mSDsCounter, 0 mSdLazyCounter, 578 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 380 SdHoareTripleChecker+Invalid, 578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 578 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-20 18:47:04,006 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 380 Invalid, 578 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 578 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-20 18:47:04,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2024-09-20 18:47:04,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 248. [2024-09-20 18:47:04,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 184 states have (on average 1.0108695652173914) internal successors, (186), 185 states have internal predecessors, (186), 32 states have call successors, (32), 32 states have call predecessors, (32), 31 states have return successors, (31), 30 states have call predecessors, (31), 31 states have call successors, (31) [2024-09-20 18:47:04,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 249 transitions. [2024-09-20 18:47:04,029 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 249 transitions. Word has length 244 [2024-09-20 18:47:04,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:47:04,029 INFO L474 AbstractCegarLoop]: Abstraction has 248 states and 249 transitions. [2024-09-20 18:47:04,029 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 1.5625) internal successors, (100), 64 states have internal predecessors, (100), 31 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2024-09-20 18:47:04,029 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:47:04,029 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 249 transitions. [2024-09-20 18:47:04,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2024-09-20 18:47:04,031 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:47:04,031 INFO L216 NwaCegarLoop]: trace histogram [30, 30, 30, 30, 29, 29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:47:04,047 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Forceful destruction successful, exit code 0 [2024-09-20 18:47:04,234 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2024-09-20 18:47:04,235 INFO L399 AbstractCegarLoop]: === Iteration 61 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:47:04,235 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:47:04,235 INFO L85 PathProgramCache]: Analyzing trace with hash -1361665351, now seen corresponding path program 58 times [2024-09-20 18:47:04,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:47:04,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981869172] [2024-09-20 18:47:04,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:47:04,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:47:04,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:05,014 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:47:05,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:05,015 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-20 18:47:05,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:05,016 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-20 18:47:05,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:05,017 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-09-20 18:47:05,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:05,018 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-20 18:47:05,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:05,020 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-09-20 18:47:05,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:05,021 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-09-20 18:47:05,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:05,022 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-09-20 18:47:05,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:05,023 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-20 18:47:05,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:05,025 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-09-20 18:47:05,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:05,026 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-09-20 18:47:05,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:05,027 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2024-09-20 18:47:05,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:05,028 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-09-20 18:47:05,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:05,030 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2024-09-20 18:47:05,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:05,031 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2024-09-20 18:47:05,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:05,032 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2024-09-20 18:47:05,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:05,033 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2024-09-20 18:47:05,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:05,034 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2024-09-20 18:47:05,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:05,036 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-09-20 18:47:05,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:05,037 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2024-09-20 18:47:05,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:05,038 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2024-09-20 18:47:05,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:05,039 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2024-09-20 18:47:05,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:05,040 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2024-09-20 18:47:05,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:05,041 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2024-09-20 18:47:05,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:05,042 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2024-09-20 18:47:05,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:05,043 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2024-09-20 18:47:05,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:05,044 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2024-09-20 18:47:05,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:05,045 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2024-09-20 18:47:05,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:05,045 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2024-09-20 18:47:05,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:05,046 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2024-09-20 18:47:05,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:05,047 INFO L134 CoverageAnalysis]: Checked inductivity of 3423 backedges. 493 proven. 1306 refuted. 0 times theorem prover too weak. 1624 trivial. 0 not checked. [2024-09-20 18:47:05,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:47:05,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981869172] [2024-09-20 18:47:05,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981869172] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:47:05,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [832020733] [2024-09-20 18:47:05,048 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-20 18:47:05,048 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:47:05,048 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:47:05,049 INFO L229 MonitoredProcess]: Starting monitored process 60 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:47:05,050 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2024-09-20 18:47:05,139 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-20 18:47:05,139 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:47:05,141 INFO L262 TraceCheckSpWp]: Trace formula consists of 599 conjuncts, 66 conjuncts are in the unsatisfiable core [2024-09-20 18:47:05,144 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:47:05,279 INFO L134 CoverageAnalysis]: Checked inductivity of 3423 backedges. 523 proven. 1276 refuted. 0 times theorem prover too weak. 1624 trivial. 0 not checked. [2024-09-20 18:47:05,279 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:47:06,103 INFO L134 CoverageAnalysis]: Checked inductivity of 3423 backedges. 523 proven. 1276 refuted. 0 times theorem prover too weak. 1624 trivial. 0 not checked. [2024-09-20 18:47:06,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [832020733] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:47:06,103 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:47:06,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35, 35] total 38 [2024-09-20 18:47:06,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740582664] [2024-09-20 18:47:06,103 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:47:06,104 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-09-20 18:47:06,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:47:06,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-09-20 18:47:06,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=541, Invalid=865, Unknown=0, NotChecked=0, Total=1406 [2024-09-20 18:47:06,105 INFO L87 Difference]: Start difference. First operand 248 states and 249 transitions. Second operand has 38 states, 38 states have (on average 2.710526315789474) internal successors, (103), 36 states have internal predecessors, (103), 31 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2024-09-20 18:47:06,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:47:06,278 INFO L93 Difference]: Finished difference Result 261 states and 263 transitions. [2024-09-20 18:47:06,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-09-20 18:47:06,279 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 2.710526315789474) internal successors, (103), 36 states have internal predecessors, (103), 31 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) Word has length 245 [2024-09-20 18:47:06,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:47:06,280 INFO L225 Difference]: With dead ends: 261 [2024-09-20 18:47:06,280 INFO L226 Difference]: Without dead ends: 259 [2024-09-20 18:47:06,281 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 614 GetRequests, 517 SyntacticMatches, 60 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1254 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=547, Invalid=935, Unknown=0, NotChecked=0, Total=1482 [2024-09-20 18:47:06,281 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 361 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 361 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 18:47:06,281 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 105 Invalid, 362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 361 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 18:47:06,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2024-09-20 18:47:06,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 255. [2024-09-20 18:47:06,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 189 states have (on average 1.0105820105820107) internal successors, (191), 190 states have internal predecessors, (191), 33 states have call successors, (33), 33 states have call predecessors, (33), 32 states have return successors, (32), 31 states have call predecessors, (32), 32 states have call successors, (32) [2024-09-20 18:47:06,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 256 transitions. [2024-09-20 18:47:06,303 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 256 transitions. Word has length 245 [2024-09-20 18:47:06,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:47:06,304 INFO L474 AbstractCegarLoop]: Abstraction has 255 states and 256 transitions. [2024-09-20 18:47:06,304 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 2.710526315789474) internal successors, (103), 36 states have internal predecessors, (103), 31 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2024-09-20 18:47:06,304 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:47:06,304 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 256 transitions. [2024-09-20 18:47:06,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2024-09-20 18:47:06,305 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:47:06,305 INFO L216 NwaCegarLoop]: trace histogram [31, 31, 31, 30, 30, 30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:47:06,322 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Forceful destruction successful, exit code 0 [2024-09-20 18:47:06,506 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,60 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:47:06,506 INFO L399 AbstractCegarLoop]: === Iteration 62 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:47:06,506 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:47:06,506 INFO L85 PathProgramCache]: Analyzing trace with hash 1311943627, now seen corresponding path program 59 times [2024-09-20 18:47:06,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:47:06,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616602596] [2024-09-20 18:47:06,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:47:06,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:47:06,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:07,892 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:47:07,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:07,894 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-20 18:47:07,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:07,894 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-20 18:47:07,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:07,895 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-09-20 18:47:07,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:07,896 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-20 18:47:07,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:07,897 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-09-20 18:47:07,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:07,898 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-09-20 18:47:07,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:07,898 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-09-20 18:47:07,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:07,899 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-20 18:47:07,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:07,900 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-09-20 18:47:07,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:07,901 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-09-20 18:47:07,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:07,901 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2024-09-20 18:47:07,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:07,902 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-09-20 18:47:07,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:07,903 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2024-09-20 18:47:07,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:07,904 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2024-09-20 18:47:07,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:07,905 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2024-09-20 18:47:07,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:07,905 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2024-09-20 18:47:07,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:07,907 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2024-09-20 18:47:07,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:07,908 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-09-20 18:47:07,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:07,909 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2024-09-20 18:47:07,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:07,910 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2024-09-20 18:47:07,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:07,912 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2024-09-20 18:47:07,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:07,913 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2024-09-20 18:47:07,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:07,914 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2024-09-20 18:47:07,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:07,915 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2024-09-20 18:47:07,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:07,916 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2024-09-20 18:47:07,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:07,917 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2024-09-20 18:47:07,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:07,918 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2024-09-20 18:47:07,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:07,919 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2024-09-20 18:47:07,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:07,920 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2024-09-20 18:47:07,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:07,921 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2024-09-20 18:47:07,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:07,922 INFO L134 CoverageAnalysis]: Checked inductivity of 3630 backedges. 1425 proven. 465 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2024-09-20 18:47:07,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:47:07,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616602596] [2024-09-20 18:47:07,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616602596] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:47:07,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [95387371] [2024-09-20 18:47:07,922 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-20 18:47:07,923 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:47:07,923 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:47:07,924 INFO L229 MonitoredProcess]: Starting monitored process 61 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:47:07,924 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2024-09-20 18:47:08,031 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 31 check-sat command(s) [2024-09-20 18:47:08,031 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:47:08,034 INFO L262 TraceCheckSpWp]: Trace formula consists of 613 conjuncts, 64 conjuncts are in the unsatisfiable core [2024-09-20 18:47:08,036 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:47:08,154 INFO L134 CoverageAnalysis]: Checked inductivity of 3630 backedges. 1425 proven. 465 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2024-09-20 18:47:08,154 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:47:09,273 INFO L134 CoverageAnalysis]: Checked inductivity of 3630 backedges. 1425 proven. 465 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2024-09-20 18:47:09,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [95387371] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:47:09,274 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:47:09,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 65, 65] total 66 [2024-09-20 18:47:09,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172127851] [2024-09-20 18:47:09,274 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:47:09,274 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2024-09-20 18:47:09,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:47:09,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2024-09-20 18:47:09,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1090, Invalid=3200, Unknown=0, NotChecked=0, Total=4290 [2024-09-20 18:47:09,275 INFO L87 Difference]: Start difference. First operand 255 states and 256 transitions. Second operand has 66 states, 66 states have (on average 1.5606060606060606) internal successors, (103), 66 states have internal predecessors, (103), 32 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2024-09-20 18:47:09,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:47:09,584 INFO L93 Difference]: Finished difference Result 357 states and 389 transitions. [2024-09-20 18:47:09,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2024-09-20 18:47:09,584 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 1.5606060606060606) internal successors, (103), 66 states have internal predecessors, (103), 32 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) Word has length 252 [2024-09-20 18:47:09,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:47:09,587 INFO L225 Difference]: With dead ends: 357 [2024-09-20 18:47:09,587 INFO L226 Difference]: Without dead ends: 256 [2024-09-20 18:47:09,587 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 630 GetRequests, 504 SyntacticMatches, 62 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3087 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1090, Invalid=3200, Unknown=0, NotChecked=0, Total=4290 [2024-09-20 18:47:09,588 INFO L434 NwaCegarLoop]: 69 mSDtfsCounter, 0 mSDsluCounter, 429 mSDsCounter, 0 mSdLazyCounter, 734 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 498 SdHoareTripleChecker+Invalid, 734 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 734 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-20 18:47:09,588 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 498 Invalid, 734 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 734 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-20 18:47:09,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2024-09-20 18:47:09,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 256. [2024-09-20 18:47:09,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 190 states have (on average 1.0105263157894737) internal successors, (192), 191 states have internal predecessors, (192), 33 states have call successors, (33), 33 states have call predecessors, (33), 32 states have return successors, (32), 31 states have call predecessors, (32), 32 states have call successors, (32) [2024-09-20 18:47:09,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 257 transitions. [2024-09-20 18:47:09,611 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 257 transitions. Word has length 252 [2024-09-20 18:47:09,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:47:09,611 INFO L474 AbstractCegarLoop]: Abstraction has 256 states and 257 transitions. [2024-09-20 18:47:09,612 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 1.5606060606060606) internal successors, (103), 66 states have internal predecessors, (103), 32 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2024-09-20 18:47:09,612 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:47:09,612 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 257 transitions. [2024-09-20 18:47:09,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2024-09-20 18:47:09,613 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:47:09,613 INFO L216 NwaCegarLoop]: trace histogram [31, 31, 31, 31, 30, 30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:47:09,631 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Forceful destruction successful, exit code 0 [2024-09-20 18:47:09,814 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable61 [2024-09-20 18:47:09,816 INFO L399 AbstractCegarLoop]: === Iteration 63 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:47:09,816 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:47:09,816 INFO L85 PathProgramCache]: Analyzing trace with hash -1358859177, now seen corresponding path program 60 times [2024-09-20 18:47:09,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:47:09,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806513652] [2024-09-20 18:47:09,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:47:09,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:47:09,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:10,656 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:47:10,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:10,657 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-20 18:47:10,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:10,658 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-20 18:47:10,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:10,659 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-20 18:47:10,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:10,660 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-09-20 18:47:10,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:10,661 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-20 18:47:10,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:10,662 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-09-20 18:47:10,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:10,662 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-09-20 18:47:10,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:10,663 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-09-20 18:47:10,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:10,664 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-20 18:47:10,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:10,665 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-09-20 18:47:10,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:10,666 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-09-20 18:47:10,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:10,666 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2024-09-20 18:47:10,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:10,667 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-09-20 18:47:10,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:10,668 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2024-09-20 18:47:10,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:10,669 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2024-09-20 18:47:10,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:10,670 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2024-09-20 18:47:10,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:10,671 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2024-09-20 18:47:10,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:10,671 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2024-09-20 18:47:10,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:10,672 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2024-09-20 18:47:10,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:10,673 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2024-09-20 18:47:10,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:10,674 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2024-09-20 18:47:10,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:10,675 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2024-09-20 18:47:10,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:10,675 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2024-09-20 18:47:10,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:10,676 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2024-09-20 18:47:10,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:10,677 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2024-09-20 18:47:10,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:10,678 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2024-09-20 18:47:10,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:10,679 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2024-09-20 18:47:10,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:10,680 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2024-09-20 18:47:10,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:10,680 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2024-09-20 18:47:10,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:10,681 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2024-09-20 18:47:10,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:10,682 INFO L134 CoverageAnalysis]: Checked inductivity of 3661 backedges. 525 proven. 1396 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2024-09-20 18:47:10,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:47:10,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806513652] [2024-09-20 18:47:10,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806513652] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:47:10,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [798194833] [2024-09-20 18:47:10,683 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-20 18:47:10,683 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:47:10,683 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:47:10,684 INFO L229 MonitoredProcess]: Starting monitored process 62 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:47:10,685 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2024-09-20 18:47:10,794 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2024-09-20 18:47:10,794 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:47:10,797 INFO L262 TraceCheckSpWp]: Trace formula consists of 618 conjuncts, 68 conjuncts are in the unsatisfiable core [2024-09-20 18:47:10,799 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:47:10,938 INFO L134 CoverageAnalysis]: Checked inductivity of 3661 backedges. 556 proven. 1365 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2024-09-20 18:47:10,938 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:47:11,764 INFO L134 CoverageAnalysis]: Checked inductivity of 3661 backedges. 556 proven. 1365 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2024-09-20 18:47:11,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [798194833] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:47:11,765 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:47:11,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36, 36] total 39 [2024-09-20 18:47:11,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667040107] [2024-09-20 18:47:11,765 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:47:11,765 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-09-20 18:47:11,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:47:11,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-09-20 18:47:11,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=574, Invalid=908, Unknown=0, NotChecked=0, Total=1482 [2024-09-20 18:47:11,766 INFO L87 Difference]: Start difference. First operand 256 states and 257 transitions. Second operand has 39 states, 39 states have (on average 2.717948717948718) internal successors, (106), 37 states have internal predecessors, (106), 32 states have call successors, (34), 3 states have call predecessors, (34), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2024-09-20 18:47:11,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:47:11,940 INFO L93 Difference]: Finished difference Result 269 states and 271 transitions. [2024-09-20 18:47:11,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-09-20 18:47:11,940 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 2.717948717948718) internal successors, (106), 37 states have internal predecessors, (106), 32 states have call successors, (34), 3 states have call predecessors, (34), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) Word has length 253 [2024-09-20 18:47:11,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:47:11,941 INFO L225 Difference]: With dead ends: 269 [2024-09-20 18:47:11,941 INFO L226 Difference]: Without dead ends: 267 [2024-09-20 18:47:11,942 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 634 GetRequests, 534 SyntacticMatches, 62 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1327 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=580, Invalid=980, Unknown=0, NotChecked=0, Total=1560 [2024-09-20 18:47:11,942 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 347 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 347 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 18:47:11,942 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 96 Invalid, 349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 347 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 18:47:11,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2024-09-20 18:47:11,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 263. [2024-09-20 18:47:11,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 195 states have (on average 1.0102564102564102) internal successors, (197), 196 states have internal predecessors, (197), 34 states have call successors, (34), 34 states have call predecessors, (34), 33 states have return successors, (33), 32 states have call predecessors, (33), 33 states have call successors, (33) [2024-09-20 18:47:11,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 264 transitions. [2024-09-20 18:47:11,959 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 264 transitions. Word has length 253 [2024-09-20 18:47:11,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:47:11,959 INFO L474 AbstractCegarLoop]: Abstraction has 263 states and 264 transitions. [2024-09-20 18:47:11,959 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 2.717948717948718) internal successors, (106), 37 states have internal predecessors, (106), 32 states have call successors, (34), 3 states have call predecessors, (34), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2024-09-20 18:47:11,959 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:47:11,959 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 264 transitions. [2024-09-20 18:47:11,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2024-09-20 18:47:11,960 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:47:11,961 INFO L216 NwaCegarLoop]: trace histogram [32, 32, 32, 31, 31, 31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:47:11,977 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Ended with exit code 0 [2024-09-20 18:47:12,161 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,62 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:47:12,161 INFO L399 AbstractCegarLoop]: === Iteration 64 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:47:12,161 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:47:12,161 INFO L85 PathProgramCache]: Analyzing trace with hash -1654363027, now seen corresponding path program 61 times [2024-09-20 18:47:12,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:47:12,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495470959] [2024-09-20 18:47:12,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:47:12,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:47:12,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:13,632 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:47:13,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:13,633 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-20 18:47:13,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:13,634 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-20 18:47:13,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:13,635 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-20 18:47:13,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:13,636 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-09-20 18:47:13,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:13,636 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-20 18:47:13,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:13,637 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-09-20 18:47:13,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:13,638 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-09-20 18:47:13,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:13,639 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-09-20 18:47:13,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:13,639 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-20 18:47:13,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:13,640 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-09-20 18:47:13,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:13,641 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-09-20 18:47:13,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:13,642 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2024-09-20 18:47:13,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:13,642 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-09-20 18:47:13,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:13,643 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2024-09-20 18:47:13,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:13,644 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2024-09-20 18:47:13,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:13,645 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2024-09-20 18:47:13,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:13,646 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2024-09-20 18:47:13,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:13,646 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2024-09-20 18:47:13,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:13,647 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2024-09-20 18:47:13,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:13,648 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2024-09-20 18:47:13,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:13,649 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2024-09-20 18:47:13,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:13,650 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2024-09-20 18:47:13,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:13,650 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2024-09-20 18:47:13,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:13,651 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2024-09-20 18:47:13,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:13,652 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2024-09-20 18:47:13,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:13,653 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2024-09-20 18:47:13,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:13,653 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2024-09-20 18:47:13,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:13,654 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2024-09-20 18:47:13,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:13,655 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2024-09-20 18:47:13,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:13,656 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2024-09-20 18:47:13,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:13,657 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2024-09-20 18:47:13,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:13,658 INFO L134 CoverageAnalysis]: Checked inductivity of 3875 backedges. 1519 proven. 496 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-09-20 18:47:13,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:47:13,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495470959] [2024-09-20 18:47:13,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495470959] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:47:13,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [901190812] [2024-09-20 18:47:13,658 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-20 18:47:13,658 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:47:13,658 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:47:13,659 INFO L229 MonitoredProcess]: Starting monitored process 63 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:47:13,660 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2024-09-20 18:47:13,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:13,750 INFO L262 TraceCheckSpWp]: Trace formula consists of 632 conjuncts, 66 conjuncts are in the unsatisfiable core [2024-09-20 18:47:13,753 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:47:13,914 INFO L134 CoverageAnalysis]: Checked inductivity of 3875 backedges. 1519 proven. 496 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-09-20 18:47:13,914 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:47:15,109 INFO L134 CoverageAnalysis]: Checked inductivity of 3875 backedges. 1519 proven. 496 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-09-20 18:47:15,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [901190812] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:47:15,109 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:47:15,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 67, 67] total 68 [2024-09-20 18:47:15,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997107632] [2024-09-20 18:47:15,109 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:47:15,110 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2024-09-20 18:47:15,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:47:15,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2024-09-20 18:47:15,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1157, Invalid=3399, Unknown=0, NotChecked=0, Total=4556 [2024-09-20 18:47:15,111 INFO L87 Difference]: Start difference. First operand 263 states and 264 transitions. Second operand has 68 states, 68 states have (on average 1.5588235294117647) internal successors, (106), 68 states have internal predecessors, (106), 33 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2024-09-20 18:47:15,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:47:15,439 INFO L93 Difference]: Finished difference Result 368 states and 401 transitions. [2024-09-20 18:47:15,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2024-09-20 18:47:15,440 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 68 states have (on average 1.5588235294117647) internal successors, (106), 68 states have internal predecessors, (106), 33 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) Word has length 260 [2024-09-20 18:47:15,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:47:15,441 INFO L225 Difference]: With dead ends: 368 [2024-09-20 18:47:15,441 INFO L226 Difference]: Without dead ends: 264 [2024-09-20 18:47:15,442 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 650 GetRequests, 520 SyntacticMatches, 64 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3283 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1157, Invalid=3399, Unknown=0, NotChecked=0, Total=4556 [2024-09-20 18:47:15,442 INFO L434 NwaCegarLoop]: 71 mSDtfsCounter, 0 mSDsluCounter, 431 mSDsCounter, 0 mSdLazyCounter, 731 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 502 SdHoareTripleChecker+Invalid, 731 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 731 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-20 18:47:15,442 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 502 Invalid, 731 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 731 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-20 18:47:15,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2024-09-20 18:47:15,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 264. [2024-09-20 18:47:15,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 196 states have (on average 1.010204081632653) internal successors, (198), 197 states have internal predecessors, (198), 34 states have call successors, (34), 34 states have call predecessors, (34), 33 states have return successors, (33), 32 states have call predecessors, (33), 33 states have call successors, (33) [2024-09-20 18:47:15,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 265 transitions. [2024-09-20 18:47:15,468 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 265 transitions. Word has length 260 [2024-09-20 18:47:15,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:47:15,468 INFO L474 AbstractCegarLoop]: Abstraction has 264 states and 265 transitions. [2024-09-20 18:47:15,468 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 68 states have (on average 1.5588235294117647) internal successors, (106), 68 states have internal predecessors, (106), 33 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2024-09-20 18:47:15,468 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:47:15,469 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 265 transitions. [2024-09-20 18:47:15,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2024-09-20 18:47:15,470 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:47:15,470 INFO L216 NwaCegarLoop]: trace histogram [32, 32, 32, 32, 31, 31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:47:15,490 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Forceful destruction successful, exit code 0 [2024-09-20 18:47:15,670 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,63 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:47:15,671 INFO L399 AbstractCegarLoop]: === Iteration 65 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:47:15,671 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:47:15,671 INFO L85 PathProgramCache]: Analyzing trace with hash -598218503, now seen corresponding path program 62 times [2024-09-20 18:47:15,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:47:15,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292555254] [2024-09-20 18:47:15,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:47:15,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:47:15,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:16,531 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:47:16,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:16,532 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-20 18:47:16,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:16,533 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-09-20 18:47:16,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:16,534 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-09-20 18:47:16,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:16,534 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-09-20 18:47:16,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:16,535 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-20 18:47:16,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:16,536 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-20 18:47:16,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:16,537 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-09-20 18:47:16,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:16,538 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-09-20 18:47:16,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:16,538 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-09-20 18:47:16,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:16,539 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-09-20 18:47:16,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:16,540 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2024-09-20 18:47:16,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:16,541 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-09-20 18:47:16,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:16,542 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2024-09-20 18:47:16,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:16,543 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-09-20 18:47:16,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:16,543 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2024-09-20 18:47:16,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:16,544 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2024-09-20 18:47:16,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:16,545 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2024-09-20 18:47:16,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:16,546 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2024-09-20 18:47:16,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:16,547 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2024-09-20 18:47:16,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:16,547 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2024-09-20 18:47:16,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:16,548 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2024-09-20 18:47:16,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:16,549 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2024-09-20 18:47:16,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:16,550 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2024-09-20 18:47:16,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:16,551 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2024-09-20 18:47:16,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:16,551 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2024-09-20 18:47:16,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:16,552 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2024-09-20 18:47:16,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:16,553 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2024-09-20 18:47:16,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:16,554 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2024-09-20 18:47:16,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:16,555 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2024-09-20 18:47:16,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:16,556 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2024-09-20 18:47:16,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:16,557 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2024-09-20 18:47:16,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:16,558 INFO L134 CoverageAnalysis]: Checked inductivity of 3907 backedges. 558 proven. 1489 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-09-20 18:47:16,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:47:16,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292555254] [2024-09-20 18:47:16,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292555254] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:47:16,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [376008896] [2024-09-20 18:47:16,558 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-20 18:47:16,559 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:47:16,559 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:47:16,560 INFO L229 MonitoredProcess]: Starting monitored process 64 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:47:16,561 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2024-09-20 18:47:16,651 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-20 18:47:16,651 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:47:16,653 INFO L262 TraceCheckSpWp]: Trace formula consists of 637 conjuncts, 67 conjuncts are in the unsatisfiable core [2024-09-20 18:47:16,655 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:47:16,824 INFO L134 CoverageAnalysis]: Checked inductivity of 3907 backedges. 590 proven. 1457 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-09-20 18:47:16,824 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:47:17,725 INFO L134 CoverageAnalysis]: Checked inductivity of 3907 backedges. 590 proven. 1457 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-09-20 18:47:17,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [376008896] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:47:17,726 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:47:17,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37, 37] total 40 [2024-09-20 18:47:17,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966619951] [2024-09-20 18:47:17,726 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:47:17,726 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-09-20 18:47:17,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:47:17,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-09-20 18:47:17,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=608, Invalid=952, Unknown=0, NotChecked=0, Total=1560 [2024-09-20 18:47:17,727 INFO L87 Difference]: Start difference. First operand 264 states and 265 transitions. Second operand has 40 states, 40 states have (on average 2.725) internal successors, (109), 38 states have internal predecessors, (109), 33 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2024-09-20 18:47:17,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:47:17,898 INFO L93 Difference]: Finished difference Result 277 states and 279 transitions. [2024-09-20 18:47:17,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-09-20 18:47:17,898 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 2.725) internal successors, (109), 38 states have internal predecessors, (109), 33 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) Word has length 261 [2024-09-20 18:47:17,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:47:17,899 INFO L225 Difference]: With dead ends: 277 [2024-09-20 18:47:17,900 INFO L226 Difference]: Without dead ends: 275 [2024-09-20 18:47:17,900 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 654 GetRequests, 549 SyntacticMatches, 66 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1468 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=614, Invalid=1026, Unknown=0, NotChecked=0, Total=1640 [2024-09-20 18:47:17,900 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 333 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 18:47:17,900 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 90 Invalid, 335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 333 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 18:47:17,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2024-09-20 18:47:17,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 271. [2024-09-20 18:47:17,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 201 states have (on average 1.0099502487562189) internal successors, (203), 202 states have internal predecessors, (203), 35 states have call successors, (35), 35 states have call predecessors, (35), 34 states have return successors, (34), 33 states have call predecessors, (34), 34 states have call successors, (34) [2024-09-20 18:47:17,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 272 transitions. [2024-09-20 18:47:17,916 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 272 transitions. Word has length 261 [2024-09-20 18:47:17,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:47:17,916 INFO L474 AbstractCegarLoop]: Abstraction has 271 states and 272 transitions. [2024-09-20 18:47:17,916 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 2.725) internal successors, (109), 38 states have internal predecessors, (109), 33 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2024-09-20 18:47:17,917 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:47:17,917 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 272 transitions. [2024-09-20 18:47:17,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2024-09-20 18:47:17,917 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:47:17,917 INFO L216 NwaCegarLoop]: trace histogram [33, 33, 33, 32, 32, 32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:47:17,929 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Ended with exit code 0 [2024-09-20 18:47:18,118 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 64 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable64 [2024-09-20 18:47:18,118 INFO L399 AbstractCegarLoop]: === Iteration 66 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:47:18,118 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:47:18,118 INFO L85 PathProgramCache]: Analyzing trace with hash -1474175605, now seen corresponding path program 63 times [2024-09-20 18:47:18,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:47:18,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300079608] [2024-09-20 18:47:18,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:47:18,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:47:18,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:19,673 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:47:19,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:19,674 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-20 18:47:19,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:19,674 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-09-20 18:47:19,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:19,675 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-09-20 18:47:19,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:19,676 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-09-20 18:47:19,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:19,677 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-20 18:47:19,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:19,678 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-20 18:47:19,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:19,679 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-09-20 18:47:19,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:19,679 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-09-20 18:47:19,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:19,680 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-09-20 18:47:19,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:19,681 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-09-20 18:47:19,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:19,682 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2024-09-20 18:47:19,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:19,682 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-09-20 18:47:19,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:19,683 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2024-09-20 18:47:19,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:19,684 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-09-20 18:47:19,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:19,685 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2024-09-20 18:47:19,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:19,686 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2024-09-20 18:47:19,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:19,687 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2024-09-20 18:47:19,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:19,687 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2024-09-20 18:47:19,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:19,688 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2024-09-20 18:47:19,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:19,689 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2024-09-20 18:47:19,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:19,690 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2024-09-20 18:47:19,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:19,691 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2024-09-20 18:47:19,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:19,691 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2024-09-20 18:47:19,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:19,692 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2024-09-20 18:47:19,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:19,693 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2024-09-20 18:47:19,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:19,694 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2024-09-20 18:47:19,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:19,695 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2024-09-20 18:47:19,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:19,695 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2024-09-20 18:47:19,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:19,696 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2024-09-20 18:47:19,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:19,697 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2024-09-20 18:47:19,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:19,698 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2024-09-20 18:47:19,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:19,699 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2024-09-20 18:47:19,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:19,700 INFO L134 CoverageAnalysis]: Checked inductivity of 4128 backedges. 1616 proven. 528 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2024-09-20 18:47:19,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:47:19,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300079608] [2024-09-20 18:47:19,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300079608] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:47:19,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2101287507] [2024-09-20 18:47:19,700 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-20 18:47:19,700 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:47:19,700 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:47:19,716 INFO L229 MonitoredProcess]: Starting monitored process 65 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:47:19,722 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2024-09-20 18:47:19,842 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 33 check-sat command(s) [2024-09-20 18:47:19,842 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:47:19,844 INFO L262 TraceCheckSpWp]: Trace formula consists of 651 conjuncts, 68 conjuncts are in the unsatisfiable core [2024-09-20 18:47:19,846 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:47:19,968 INFO L134 CoverageAnalysis]: Checked inductivity of 4128 backedges. 1616 proven. 528 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2024-09-20 18:47:19,968 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:47:21,212 INFO L134 CoverageAnalysis]: Checked inductivity of 4128 backedges. 1616 proven. 528 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2024-09-20 18:47:21,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2101287507] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:47:21,212 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:47:21,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 69, 69] total 70 [2024-09-20 18:47:21,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388163033] [2024-09-20 18:47:21,212 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:47:21,213 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2024-09-20 18:47:21,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:47:21,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2024-09-20 18:47:21,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1226, Invalid=3604, Unknown=0, NotChecked=0, Total=4830 [2024-09-20 18:47:21,214 INFO L87 Difference]: Start difference. First operand 271 states and 272 transitions. Second operand has 70 states, 70 states have (on average 1.5571428571428572) internal successors, (109), 70 states have internal predecessors, (109), 34 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2024-09-20 18:47:21,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:47:21,594 INFO L93 Difference]: Finished difference Result 379 states and 413 transitions. [2024-09-20 18:47:21,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2024-09-20 18:47:21,595 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 70 states have (on average 1.5571428571428572) internal successors, (109), 70 states have internal predecessors, (109), 34 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) Word has length 268 [2024-09-20 18:47:21,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:47:21,596 INFO L225 Difference]: With dead ends: 379 [2024-09-20 18:47:21,596 INFO L226 Difference]: Without dead ends: 272 [2024-09-20 18:47:21,597 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 670 GetRequests, 536 SyntacticMatches, 66 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3485 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1226, Invalid=3604, Unknown=0, NotChecked=0, Total=4830 [2024-09-20 18:47:21,597 INFO L434 NwaCegarLoop]: 73 mSDtfsCounter, 0 mSDsluCounter, 669 mSDsCounter, 0 mSdLazyCounter, 933 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 742 SdHoareTripleChecker+Invalid, 933 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 933 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-20 18:47:21,597 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 742 Invalid, 933 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 933 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-20 18:47:21,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2024-09-20 18:47:21,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 272. [2024-09-20 18:47:21,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 202 states have (on average 1.00990099009901) internal successors, (204), 203 states have internal predecessors, (204), 35 states have call successors, (35), 35 states have call predecessors, (35), 34 states have return successors, (34), 33 states have call predecessors, (34), 34 states have call successors, (34) [2024-09-20 18:47:21,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 273 transitions. [2024-09-20 18:47:21,622 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 273 transitions. Word has length 268 [2024-09-20 18:47:21,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:47:21,622 INFO L474 AbstractCegarLoop]: Abstraction has 272 states and 273 transitions. [2024-09-20 18:47:21,622 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 70 states have (on average 1.5571428571428572) internal successors, (109), 70 states have internal predecessors, (109), 34 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2024-09-20 18:47:21,622 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:47:21,623 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 273 transitions. [2024-09-20 18:47:21,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2024-09-20 18:47:21,624 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:47:21,624 INFO L216 NwaCegarLoop]: trace histogram [33, 33, 33, 33, 32, 32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:47:21,640 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Forceful destruction successful, exit code 0 [2024-09-20 18:47:21,824 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65,65 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:47:21,825 INFO L399 AbstractCegarLoop]: === Iteration 67 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:47:21,825 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:47:21,825 INFO L85 PathProgramCache]: Analyzing trace with hash 2135297559, now seen corresponding path program 64 times [2024-09-20 18:47:21,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:47:21,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394377520] [2024-09-20 18:47:21,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:47:21,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:47:21,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:22,735 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:47:22,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:22,737 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-09-20 18:47:22,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:22,738 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-09-20 18:47:22,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:22,739 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-20 18:47:22,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:22,740 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-20 18:47:22,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:22,741 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-20 18:47:22,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:22,743 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-09-20 18:47:22,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:22,744 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-09-20 18:47:22,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:22,745 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-09-20 18:47:22,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:22,746 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-09-20 18:47:22,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:22,747 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-09-20 18:47:22,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:22,748 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-20 18:47:22,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:22,749 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2024-09-20 18:47:22,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:22,750 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-09-20 18:47:22,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:22,751 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2024-09-20 18:47:22,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:22,752 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2024-09-20 18:47:22,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:22,753 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2024-09-20 18:47:22,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:22,753 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-09-20 18:47:22,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:22,754 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2024-09-20 18:47:22,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:22,755 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2024-09-20 18:47:22,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:22,756 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2024-09-20 18:47:22,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:22,757 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2024-09-20 18:47:22,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:22,757 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2024-09-20 18:47:22,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:22,758 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2024-09-20 18:47:22,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:22,759 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2024-09-20 18:47:22,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:22,760 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2024-09-20 18:47:22,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:22,761 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2024-09-20 18:47:22,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:22,762 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2024-09-20 18:47:22,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:22,762 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2024-09-20 18:47:22,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:22,763 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2024-09-20 18:47:22,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:22,764 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2024-09-20 18:47:22,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:22,765 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2024-09-20 18:47:22,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:22,766 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2024-09-20 18:47:22,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:22,767 INFO L134 CoverageAnalysis]: Checked inductivity of 4161 backedges. 592 proven. 1585 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2024-09-20 18:47:22,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:47:22,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394377520] [2024-09-20 18:47:22,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394377520] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:47:22,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [808643932] [2024-09-20 18:47:22,767 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-20 18:47:22,767 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:47:22,767 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:47:22,768 INFO L229 MonitoredProcess]: Starting monitored process 66 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:47:22,769 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2024-09-20 18:47:22,863 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-20 18:47:22,863 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:47:22,866 INFO L262 TraceCheckSpWp]: Trace formula consists of 656 conjuncts, 72 conjuncts are in the unsatisfiable core [2024-09-20 18:47:22,868 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:47:23,061 INFO L134 CoverageAnalysis]: Checked inductivity of 4161 backedges. 625 proven. 1552 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2024-09-20 18:47:23,061 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:47:24,045 INFO L134 CoverageAnalysis]: Checked inductivity of 4161 backedges. 625 proven. 1552 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2024-09-20 18:47:24,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [808643932] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:47:24,045 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:47:24,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38, 38] total 41 [2024-09-20 18:47:24,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399324882] [2024-09-20 18:47:24,046 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:47:24,046 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-09-20 18:47:24,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:47:24,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-09-20 18:47:24,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=643, Invalid=997, Unknown=0, NotChecked=0, Total=1640 [2024-09-20 18:47:24,047 INFO L87 Difference]: Start difference. First operand 272 states and 273 transitions. Second operand has 41 states, 41 states have (on average 2.731707317073171) internal successors, (112), 39 states have internal predecessors, (112), 34 states have call successors, (36), 3 states have call predecessors, (36), 1 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2024-09-20 18:47:24,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:47:24,215 INFO L93 Difference]: Finished difference Result 285 states and 287 transitions. [2024-09-20 18:47:24,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-09-20 18:47:24,215 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 2.731707317073171) internal successors, (112), 39 states have internal predecessors, (112), 34 states have call successors, (36), 3 states have call predecessors, (36), 1 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) Word has length 269 [2024-09-20 18:47:24,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:47:24,217 INFO L225 Difference]: With dead ends: 285 [2024-09-20 18:47:24,217 INFO L226 Difference]: Without dead ends: 283 [2024-09-20 18:47:24,217 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 674 GetRequests, 568 SyntacticMatches, 66 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1479 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=649, Invalid=1073, Unknown=0, NotChecked=0, Total=1722 [2024-09-20 18:47:24,217 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 332 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 332 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 18:47:24,217 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 112 Invalid, 333 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 332 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 18:47:24,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2024-09-20 18:47:24,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 279. [2024-09-20 18:47:24,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 207 states have (on average 1.0096618357487923) internal successors, (209), 208 states have internal predecessors, (209), 36 states have call successors, (36), 36 states have call predecessors, (36), 35 states have return successors, (35), 34 states have call predecessors, (35), 35 states have call successors, (35) [2024-09-20 18:47:24,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 280 transitions. [2024-09-20 18:47:24,243 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 280 transitions. Word has length 269 [2024-09-20 18:47:24,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:47:24,243 INFO L474 AbstractCegarLoop]: Abstraction has 279 states and 280 transitions. [2024-09-20 18:47:24,243 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 2.731707317073171) internal successors, (112), 39 states have internal predecessors, (112), 34 states have call successors, (36), 3 states have call predecessors, (36), 1 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2024-09-20 18:47:24,244 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:47:24,244 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 280 transitions. [2024-09-20 18:47:24,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2024-09-20 18:47:24,245 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:47:24,245 INFO L216 NwaCegarLoop]: trace histogram [34, 34, 34, 33, 33, 33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:47:24,262 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Forceful destruction successful, exit code 0 [2024-09-20 18:47:24,445 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66,66 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:47:24,446 INFO L399 AbstractCegarLoop]: === Iteration 68 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:47:24,446 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:47:24,446 INFO L85 PathProgramCache]: Analyzing trace with hash 894655149, now seen corresponding path program 65 times [2024-09-20 18:47:24,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:47:24,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160653559] [2024-09-20 18:47:24,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:47:24,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:47:24,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:26,105 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:47:26,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:26,106 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-09-20 18:47:26,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:26,107 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-09-20 18:47:26,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:26,108 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-20 18:47:26,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:26,108 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-20 18:47:26,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:26,109 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-20 18:47:26,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:26,110 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-09-20 18:47:26,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:26,111 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-09-20 18:47:26,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:26,111 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-09-20 18:47:26,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:26,113 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-09-20 18:47:26,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:26,114 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-09-20 18:47:26,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:26,115 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-20 18:47:26,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:26,116 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2024-09-20 18:47:26,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:26,117 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-09-20 18:47:26,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:26,118 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2024-09-20 18:47:26,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:26,119 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2024-09-20 18:47:26,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:26,120 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2024-09-20 18:47:26,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:26,121 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-09-20 18:47:26,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:26,122 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2024-09-20 18:47:26,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:26,123 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2024-09-20 18:47:26,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:26,123 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2024-09-20 18:47:26,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:26,124 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2024-09-20 18:47:26,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:26,125 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2024-09-20 18:47:26,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:26,126 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2024-09-20 18:47:26,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:26,127 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2024-09-20 18:47:26,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:26,127 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2024-09-20 18:47:26,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:26,128 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2024-09-20 18:47:26,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:26,129 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2024-09-20 18:47:26,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:26,130 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2024-09-20 18:47:26,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:26,131 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2024-09-20 18:47:26,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:26,131 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2024-09-20 18:47:26,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:26,132 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2024-09-20 18:47:26,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:26,133 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2024-09-20 18:47:26,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:26,134 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2024-09-20 18:47:26,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:26,135 INFO L134 CoverageAnalysis]: Checked inductivity of 4389 backedges. 1716 proven. 561 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2024-09-20 18:47:26,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:47:26,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160653559] [2024-09-20 18:47:26,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160653559] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:47:26,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1336770372] [2024-09-20 18:47:26,135 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-20 18:47:26,135 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:47:26,136 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:47:26,136 INFO L229 MonitoredProcess]: Starting monitored process 67 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:47:26,137 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2024-09-20 18:47:26,254 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 34 check-sat command(s) [2024-09-20 18:47:26,254 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:47:26,257 INFO L262 TraceCheckSpWp]: Trace formula consists of 670 conjuncts, 70 conjuncts are in the unsatisfiable core [2024-09-20 18:47:26,259 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:47:26,402 INFO L134 CoverageAnalysis]: Checked inductivity of 4389 backedges. 1716 proven. 561 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2024-09-20 18:47:26,402 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:47:27,710 INFO L134 CoverageAnalysis]: Checked inductivity of 4389 backedges. 1716 proven. 561 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2024-09-20 18:47:27,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1336770372] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:47:27,710 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:47:27,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [71, 71, 71] total 72 [2024-09-20 18:47:27,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124807945] [2024-09-20 18:47:27,711 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:47:27,711 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2024-09-20 18:47:27,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:47:27,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2024-09-20 18:47:27,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1297, Invalid=3815, Unknown=0, NotChecked=0, Total=5112 [2024-09-20 18:47:27,712 INFO L87 Difference]: Start difference. First operand 279 states and 280 transitions. Second operand has 72 states, 72 states have (on average 1.5555555555555556) internal successors, (112), 72 states have internal predecessors, (112), 35 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2024-09-20 18:47:28,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:47:28,095 INFO L93 Difference]: Finished difference Result 390 states and 425 transitions. [2024-09-20 18:47:28,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2024-09-20 18:47:28,095 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 72 states have (on average 1.5555555555555556) internal successors, (112), 72 states have internal predecessors, (112), 35 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) Word has length 276 [2024-09-20 18:47:28,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:47:28,097 INFO L225 Difference]: With dead ends: 390 [2024-09-20 18:47:28,097 INFO L226 Difference]: Without dead ends: 280 [2024-09-20 18:47:28,099 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 690 GetRequests, 552 SyntacticMatches, 68 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3693 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1297, Invalid=3815, Unknown=0, NotChecked=0, Total=5112 [2024-09-20 18:47:28,100 INFO L434 NwaCegarLoop]: 75 mSDtfsCounter, 0 mSDsluCounter, 539 mSDsCounter, 0 mSdLazyCounter, 737 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 614 SdHoareTripleChecker+Invalid, 737 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 737 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-20 18:47:28,100 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 614 Invalid, 737 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 737 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-20 18:47:28,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2024-09-20 18:47:28,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 280. [2024-09-20 18:47:28,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 208 states have (on average 1.0096153846153846) internal successors, (210), 209 states have internal predecessors, (210), 36 states have call successors, (36), 36 states have call predecessors, (36), 35 states have return successors, (35), 34 states have call predecessors, (35), 35 states have call successors, (35) [2024-09-20 18:47:28,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 281 transitions. [2024-09-20 18:47:28,124 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 281 transitions. Word has length 276 [2024-09-20 18:47:28,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:47:28,124 INFO L474 AbstractCegarLoop]: Abstraction has 280 states and 281 transitions. [2024-09-20 18:47:28,124 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 72 states, 72 states have (on average 1.5555555555555556) internal successors, (112), 72 states have internal predecessors, (112), 35 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2024-09-20 18:47:28,124 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:47:28,124 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 281 transitions. [2024-09-20 18:47:28,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2024-09-20 18:47:28,126 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:47:28,126 INFO L216 NwaCegarLoop]: trace histogram [34, 34, 34, 34, 33, 33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:47:28,143 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Forceful destruction successful, exit code 0 [2024-09-20 18:47:28,326 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable67 [2024-09-20 18:47:28,327 INFO L399 AbstractCegarLoop]: === Iteration 69 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:47:28,327 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:47:28,327 INFO L85 PathProgramCache]: Analyzing trace with hash -1833681095, now seen corresponding path program 66 times [2024-09-20 18:47:28,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:47:28,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034766060] [2024-09-20 18:47:28,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:47:28,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:47:28,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:29,291 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:47:29,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:29,292 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-20 18:47:29,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:29,292 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-09-20 18:47:29,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:29,293 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-20 18:47:29,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:29,294 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-20 18:47:29,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:29,295 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-09-20 18:47:29,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:29,296 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-09-20 18:47:29,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:29,297 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-09-20 18:47:29,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:29,297 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-09-20 18:47:29,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:29,298 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-09-20 18:47:29,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:29,299 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-20 18:47:29,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:29,300 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2024-09-20 18:47:29,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:29,301 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2024-09-20 18:47:29,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:29,301 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2024-09-20 18:47:29,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:29,302 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2024-09-20 18:47:29,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:29,303 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2024-09-20 18:47:29,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:29,304 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-09-20 18:47:29,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:29,305 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2024-09-20 18:47:29,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:29,306 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2024-09-20 18:47:29,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:29,307 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2024-09-20 18:47:29,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:29,308 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2024-09-20 18:47:29,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:29,310 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2024-09-20 18:47:29,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:29,311 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2024-09-20 18:47:29,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:29,312 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2024-09-20 18:47:29,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:29,314 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2024-09-20 18:47:29,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:29,315 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2024-09-20 18:47:29,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:29,316 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2024-09-20 18:47:29,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:29,317 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2024-09-20 18:47:29,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:29,319 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2024-09-20 18:47:29,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:29,320 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2024-09-20 18:47:29,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:29,321 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2024-09-20 18:47:29,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:29,322 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2024-09-20 18:47:29,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:29,323 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2024-09-20 18:47:29,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:29,325 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2024-09-20 18:47:29,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:29,326 INFO L134 CoverageAnalysis]: Checked inductivity of 4423 backedges. 627 proven. 1684 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2024-09-20 18:47:29,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:47:29,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034766060] [2024-09-20 18:47:29,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034766060] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:47:29,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [662558708] [2024-09-20 18:47:29,327 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-20 18:47:29,327 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:47:29,327 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:47:29,329 INFO L229 MonitoredProcess]: Starting monitored process 68 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:47:29,331 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process [2024-09-20 18:47:29,505 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 34 check-sat command(s) [2024-09-20 18:47:29,505 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:47:29,508 INFO L262 TraceCheckSpWp]: Trace formula consists of 675 conjuncts, 74 conjuncts are in the unsatisfiable core [2024-09-20 18:47:29,512 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:47:29,704 INFO L134 CoverageAnalysis]: Checked inductivity of 4423 backedges. 661 proven. 1650 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2024-09-20 18:47:29,704 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:47:30,734 INFO L134 CoverageAnalysis]: Checked inductivity of 4423 backedges. 661 proven. 1650 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2024-09-20 18:47:30,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [662558708] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:47:30,735 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:47:30,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39, 39] total 42 [2024-09-20 18:47:30,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335723275] [2024-09-20 18:47:30,735 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:47:30,735 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-09-20 18:47:30,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:47:30,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-09-20 18:47:30,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=679, Invalid=1043, Unknown=0, NotChecked=0, Total=1722 [2024-09-20 18:47:30,736 INFO L87 Difference]: Start difference. First operand 280 states and 281 transitions. Second operand has 42 states, 42 states have (on average 2.738095238095238) internal successors, (115), 40 states have internal predecessors, (115), 35 states have call successors, (37), 3 states have call predecessors, (37), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2024-09-20 18:47:30,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:47:30,911 INFO L93 Difference]: Finished difference Result 293 states and 295 transitions. [2024-09-20 18:47:30,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2024-09-20 18:47:30,911 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 2.738095238095238) internal successors, (115), 40 states have internal predecessors, (115), 35 states have call successors, (37), 3 states have call predecessors, (37), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) Word has length 277 [2024-09-20 18:47:30,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:47:30,913 INFO L225 Difference]: With dead ends: 293 [2024-09-20 18:47:30,913 INFO L226 Difference]: Without dead ends: 291 [2024-09-20 18:47:30,913 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 694 GetRequests, 585 SyntacticMatches, 68 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1558 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=685, Invalid=1121, Unknown=0, NotChecked=0, Total=1806 [2024-09-20 18:47:30,913 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 345 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 345 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 18:47:30,913 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 127 Invalid, 346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 345 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 18:47:30,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2024-09-20 18:47:30,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 287. [2024-09-20 18:47:30,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 213 states have (on average 1.0093896713615023) internal successors, (215), 214 states have internal predecessors, (215), 37 states have call successors, (37), 37 states have call predecessors, (37), 36 states have return successors, (36), 35 states have call predecessors, (36), 36 states have call successors, (36) [2024-09-20 18:47:30,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 288 transitions. [2024-09-20 18:47:30,934 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 288 transitions. Word has length 277 [2024-09-20 18:47:30,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:47:30,934 INFO L474 AbstractCegarLoop]: Abstraction has 287 states and 288 transitions. [2024-09-20 18:47:30,934 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 2.738095238095238) internal successors, (115), 40 states have internal predecessors, (115), 35 states have call successors, (37), 3 states have call predecessors, (37), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2024-09-20 18:47:30,935 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:47:30,935 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 288 transitions. [2024-09-20 18:47:30,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2024-09-20 18:47:30,940 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:47:30,941 INFO L216 NwaCegarLoop]: trace histogram [35, 35, 35, 34, 34, 34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:47:30,953 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Forceful destruction successful, exit code 0 [2024-09-20 18:47:31,141 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 68 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable68 [2024-09-20 18:47:31,141 INFO L399 AbstractCegarLoop]: === Iteration 70 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:47:31,142 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:47:31,142 INFO L85 PathProgramCache]: Analyzing trace with hash -274464949, now seen corresponding path program 67 times [2024-09-20 18:47:31,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:47:31,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510423716] [2024-09-20 18:47:31,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:47:31,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:47:31,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:32,865 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:47:32,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:32,866 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-20 18:47:32,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:32,867 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-09-20 18:47:32,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:32,868 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-20 18:47:32,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:32,869 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-20 18:47:32,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:32,870 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-09-20 18:47:32,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:32,870 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-09-20 18:47:32,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:32,871 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-09-20 18:47:32,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:32,872 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-09-20 18:47:32,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:32,873 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-09-20 18:47:32,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:32,873 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-20 18:47:32,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:32,874 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2024-09-20 18:47:32,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:32,875 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2024-09-20 18:47:32,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:32,876 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2024-09-20 18:47:32,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:32,877 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2024-09-20 18:47:32,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:32,877 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2024-09-20 18:47:32,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:32,878 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-09-20 18:47:32,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:32,879 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2024-09-20 18:47:32,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:32,880 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2024-09-20 18:47:32,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:32,881 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2024-09-20 18:47:32,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:32,881 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2024-09-20 18:47:32,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:32,882 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2024-09-20 18:47:32,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:32,883 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2024-09-20 18:47:32,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:32,884 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2024-09-20 18:47:32,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:32,884 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2024-09-20 18:47:32,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:32,885 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2024-09-20 18:47:32,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:32,886 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2024-09-20 18:47:32,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:32,887 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2024-09-20 18:47:32,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:32,888 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2024-09-20 18:47:32,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:32,888 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2024-09-20 18:47:32,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:32,889 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2024-09-20 18:47:32,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:32,890 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2024-09-20 18:47:32,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:32,891 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2024-09-20 18:47:32,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:32,892 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2024-09-20 18:47:32,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:32,893 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2024-09-20 18:47:32,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:32,894 INFO L134 CoverageAnalysis]: Checked inductivity of 4658 backedges. 1819 proven. 595 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-09-20 18:47:32,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:47:32,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510423716] [2024-09-20 18:47:32,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510423716] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:47:32,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [433961332] [2024-09-20 18:47:32,894 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-20 18:47:32,894 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:47:32,894 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:47:32,895 INFO L229 MonitoredProcess]: Starting monitored process 69 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:47:32,896 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process [2024-09-20 18:47:32,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:32,993 INFO L262 TraceCheckSpWp]: Trace formula consists of 689 conjuncts, 72 conjuncts are in the unsatisfiable core [2024-09-20 18:47:32,995 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:47:33,126 INFO L134 CoverageAnalysis]: Checked inductivity of 4658 backedges. 1819 proven. 595 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-09-20 18:47:33,126 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:47:34,503 INFO L134 CoverageAnalysis]: Checked inductivity of 4658 backedges. 1819 proven. 595 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-09-20 18:47:34,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [433961332] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:47:34,504 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:47:34,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [73, 73, 73] total 74 [2024-09-20 18:47:34,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151285135] [2024-09-20 18:47:34,504 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:47:34,504 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2024-09-20 18:47:34,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:47:34,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2024-09-20 18:47:34,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1370, Invalid=4032, Unknown=0, NotChecked=0, Total=5402 [2024-09-20 18:47:34,505 INFO L87 Difference]: Start difference. First operand 287 states and 288 transitions. Second operand has 74 states, 74 states have (on average 1.554054054054054) internal successors, (115), 74 states have internal predecessors, (115), 36 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2024-09-20 18:47:34,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:47:34,868 INFO L93 Difference]: Finished difference Result 401 states and 437 transitions. [2024-09-20 18:47:34,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2024-09-20 18:47:34,869 INFO L78 Accepts]: Start accepts. Automaton has has 74 states, 74 states have (on average 1.554054054054054) internal successors, (115), 74 states have internal predecessors, (115), 36 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) Word has length 284 [2024-09-20 18:47:34,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:47:34,870 INFO L225 Difference]: With dead ends: 401 [2024-09-20 18:47:34,870 INFO L226 Difference]: Without dead ends: 288 [2024-09-20 18:47:34,871 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 710 GetRequests, 568 SyntacticMatches, 70 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3907 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1370, Invalid=4032, Unknown=0, NotChecked=0, Total=5402 [2024-09-20 18:47:34,871 INFO L434 NwaCegarLoop]: 77 mSDtfsCounter, 0 mSDsluCounter, 586 mSDsCounter, 0 mSdLazyCounter, 794 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 663 SdHoareTripleChecker+Invalid, 794 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 794 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-20 18:47:34,871 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 663 Invalid, 794 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 794 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-20 18:47:34,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2024-09-20 18:47:34,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 288. [2024-09-20 18:47:34,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 214 states have (on average 1.0093457943925233) internal successors, (216), 215 states have internal predecessors, (216), 37 states have call successors, (37), 37 states have call predecessors, (37), 36 states have return successors, (36), 35 states have call predecessors, (36), 36 states have call successors, (36) [2024-09-20 18:47:34,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 289 transitions. [2024-09-20 18:47:34,894 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 289 transitions. Word has length 284 [2024-09-20 18:47:34,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:47:34,894 INFO L474 AbstractCegarLoop]: Abstraction has 288 states and 289 transitions. [2024-09-20 18:47:34,895 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 74 states, 74 states have (on average 1.554054054054054) internal successors, (115), 74 states have internal predecessors, (115), 36 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2024-09-20 18:47:34,895 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:47:34,895 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 289 transitions. [2024-09-20 18:47:34,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2024-09-20 18:47:34,896 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:47:34,896 INFO L216 NwaCegarLoop]: trace histogram [35, 35, 35, 35, 34, 34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:47:34,911 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Ended with exit code 0 [2024-09-20 18:47:35,096 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2024-09-20 18:47:35,097 INFO L399 AbstractCegarLoop]: === Iteration 71 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:47:35,097 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:47:35,097 INFO L85 PathProgramCache]: Analyzing trace with hash -179464233, now seen corresponding path program 68 times [2024-09-20 18:47:35,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:47:35,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231957874] [2024-09-20 18:47:35,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:47:35,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:47:35,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:36,100 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:47:36,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:36,102 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-09-20 18:47:36,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:36,102 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-20 18:47:36,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:36,103 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-09-20 18:47:36,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:36,104 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-20 18:47:36,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:36,105 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-09-20 18:47:36,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:36,106 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-09-20 18:47:36,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:36,107 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-09-20 18:47:36,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:36,107 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-09-20 18:47:36,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:36,108 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-09-20 18:47:36,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:36,109 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-09-20 18:47:36,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:36,110 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2024-09-20 18:47:36,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:36,111 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2024-09-20 18:47:36,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:36,112 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2024-09-20 18:47:36,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:36,113 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2024-09-20 18:47:36,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:36,114 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2024-09-20 18:47:36,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:36,115 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2024-09-20 18:47:36,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:36,116 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2024-09-20 18:47:36,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:36,117 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2024-09-20 18:47:36,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:36,118 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2024-09-20 18:47:36,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:36,119 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2024-09-20 18:47:36,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:36,121 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2024-09-20 18:47:36,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:36,122 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2024-09-20 18:47:36,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:36,123 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2024-09-20 18:47:36,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:36,124 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2024-09-20 18:47:36,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:36,125 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2024-09-20 18:47:36,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:36,126 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2024-09-20 18:47:36,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:36,127 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2024-09-20 18:47:36,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:36,129 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2024-09-20 18:47:36,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:36,130 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2024-09-20 18:47:36,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:36,131 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2024-09-20 18:47:36,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:36,132 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2024-09-20 18:47:36,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:36,133 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2024-09-20 18:47:36,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:36,135 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2024-09-20 18:47:36,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:36,136 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2024-09-20 18:47:36,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:36,138 INFO L134 CoverageAnalysis]: Checked inductivity of 4693 backedges. 663 proven. 1786 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-09-20 18:47:36,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:47:36,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231957874] [2024-09-20 18:47:36,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231957874] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:47:36,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [299373378] [2024-09-20 18:47:36,138 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-20 18:47:36,138 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:47:36,139 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:47:36,140 INFO L229 MonitoredProcess]: Starting monitored process 70 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:47:36,142 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Waiting until timeout for monitored process [2024-09-20 18:47:36,239 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-20 18:47:36,239 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:47:36,241 INFO L262 TraceCheckSpWp]: Trace formula consists of 694 conjuncts, 73 conjuncts are in the unsatisfiable core [2024-09-20 18:47:36,244 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:47:36,401 INFO L134 CoverageAnalysis]: Checked inductivity of 4693 backedges. 698 proven. 1751 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-09-20 18:47:36,402 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:47:37,429 INFO L134 CoverageAnalysis]: Checked inductivity of 4693 backedges. 698 proven. 1751 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-09-20 18:47:37,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [299373378] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:47:37,429 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:47:37,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40, 40] total 43 [2024-09-20 18:47:37,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437327809] [2024-09-20 18:47:37,430 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:47:37,430 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-09-20 18:47:37,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:47:37,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-09-20 18:47:37,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=716, Invalid=1090, Unknown=0, NotChecked=0, Total=1806 [2024-09-20 18:47:37,431 INFO L87 Difference]: Start difference. First operand 288 states and 289 transitions. Second operand has 43 states, 43 states have (on average 2.744186046511628) internal successors, (118), 41 states have internal predecessors, (118), 36 states have call successors, (38), 3 states have call predecessors, (38), 1 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2024-09-20 18:47:37,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:47:37,618 INFO L93 Difference]: Finished difference Result 301 states and 303 transitions. [2024-09-20 18:47:37,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2024-09-20 18:47:37,618 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 2.744186046511628) internal successors, (118), 41 states have internal predecessors, (118), 36 states have call successors, (38), 3 states have call predecessors, (38), 1 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) Word has length 285 [2024-09-20 18:47:37,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:47:37,620 INFO L225 Difference]: With dead ends: 301 [2024-09-20 18:47:37,620 INFO L226 Difference]: Without dead ends: 299 [2024-09-20 18:47:37,620 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 714 GetRequests, 600 SyntacticMatches, 72 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1711 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=722, Invalid=1170, Unknown=0, NotChecked=0, Total=1892 [2024-09-20 18:47:37,621 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 373 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 18:47:37,621 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 107 Invalid, 375 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 373 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 18:47:37,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2024-09-20 18:47:37,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 295. [2024-09-20 18:47:37,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295 states, 219 states have (on average 1.0091324200913243) internal successors, (221), 220 states have internal predecessors, (221), 38 states have call successors, (38), 38 states have call predecessors, (38), 37 states have return successors, (37), 36 states have call predecessors, (37), 37 states have call successors, (37) [2024-09-20 18:47:37,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 296 transitions. [2024-09-20 18:47:37,647 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 296 transitions. Word has length 285 [2024-09-20 18:47:37,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:47:37,648 INFO L474 AbstractCegarLoop]: Abstraction has 295 states and 296 transitions. [2024-09-20 18:47:37,648 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 2.744186046511628) internal successors, (118), 41 states have internal predecessors, (118), 36 states have call successors, (38), 3 states have call predecessors, (38), 1 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2024-09-20 18:47:37,648 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:47:37,648 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 296 transitions. [2024-09-20 18:47:37,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2024-09-20 18:47:37,650 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:47:37,650 INFO L216 NwaCegarLoop]: trace histogram [36, 36, 36, 35, 35, 35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:47:37,667 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Ended with exit code 0 [2024-09-20 18:47:37,850 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,70 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:47:37,850 INFO L399 AbstractCegarLoop]: === Iteration 72 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:47:37,851 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:47:37,851 INFO L85 PathProgramCache]: Analyzing trace with hash -1554949907, now seen corresponding path program 69 times [2024-09-20 18:47:37,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:47:37,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451226317] [2024-09-20 18:47:37,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:47:37,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:47:37,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:39,675 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:47:39,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:39,676 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-09-20 18:47:39,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:39,677 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-20 18:47:39,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:39,677 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-09-20 18:47:39,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:39,678 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-20 18:47:39,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:39,679 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-09-20 18:47:39,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:39,680 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-09-20 18:47:39,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:39,680 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-09-20 18:47:39,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:39,681 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-09-20 18:47:39,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:39,682 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-09-20 18:47:39,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:39,683 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-09-20 18:47:39,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:39,684 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2024-09-20 18:47:39,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:39,685 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2024-09-20 18:47:39,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:39,686 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2024-09-20 18:47:39,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:39,686 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2024-09-20 18:47:39,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:39,687 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2024-09-20 18:47:39,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:39,688 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2024-09-20 18:47:39,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:39,689 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2024-09-20 18:47:39,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:39,690 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2024-09-20 18:47:39,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:39,691 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2024-09-20 18:47:39,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:39,691 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2024-09-20 18:47:39,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:39,692 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2024-09-20 18:47:39,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:39,693 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2024-09-20 18:47:39,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:39,694 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2024-09-20 18:47:39,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:39,695 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2024-09-20 18:47:39,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:39,695 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2024-09-20 18:47:39,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:39,696 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2024-09-20 18:47:39,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:39,697 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2024-09-20 18:47:39,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:39,698 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2024-09-20 18:47:39,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:39,698 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2024-09-20 18:47:39,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:39,699 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2024-09-20 18:47:39,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:39,700 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2024-09-20 18:47:39,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:39,701 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2024-09-20 18:47:39,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:39,702 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2024-09-20 18:47:39,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:39,703 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2024-09-20 18:47:39,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:39,703 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2024-09-20 18:47:39,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:39,705 INFO L134 CoverageAnalysis]: Checked inductivity of 4935 backedges. 1925 proven. 630 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2024-09-20 18:47:39,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:47:39,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451226317] [2024-09-20 18:47:39,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451226317] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:47:39,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [910428886] [2024-09-20 18:47:39,705 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-20 18:47:39,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:47:39,705 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:47:39,706 INFO L229 MonitoredProcess]: Starting monitored process 71 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:47:39,707 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Waiting until timeout for monitored process [2024-09-20 18:47:39,832 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 36 check-sat command(s) [2024-09-20 18:47:39,832 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:47:39,834 INFO L262 TraceCheckSpWp]: Trace formula consists of 708 conjuncts, 74 conjuncts are in the unsatisfiable core [2024-09-20 18:47:39,844 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:47:39,977 INFO L134 CoverageAnalysis]: Checked inductivity of 4935 backedges. 1925 proven. 630 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2024-09-20 18:47:39,977 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:47:41,440 INFO L134 CoverageAnalysis]: Checked inductivity of 4935 backedges. 1925 proven. 630 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2024-09-20 18:47:41,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [910428886] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:47:41,440 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:47:41,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [75, 75, 75] total 76 [2024-09-20 18:47:41,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683352710] [2024-09-20 18:47:41,440 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:47:41,441 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 76 states [2024-09-20 18:47:41,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:47:41,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2024-09-20 18:47:41,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1445, Invalid=4255, Unknown=0, NotChecked=0, Total=5700 [2024-09-20 18:47:41,442 INFO L87 Difference]: Start difference. First operand 295 states and 296 transitions. Second operand has 76 states, 76 states have (on average 1.5526315789473684) internal successors, (118), 76 states have internal predecessors, (118), 37 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2024-09-20 18:47:41,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:47:41,860 INFO L93 Difference]: Finished difference Result 412 states and 449 transitions. [2024-09-20 18:47:41,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2024-09-20 18:47:41,860 INFO L78 Accepts]: Start accepts. Automaton has has 76 states, 76 states have (on average 1.5526315789473684) internal successors, (118), 76 states have internal predecessors, (118), 37 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) Word has length 292 [2024-09-20 18:47:41,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:47:41,862 INFO L225 Difference]: With dead ends: 412 [2024-09-20 18:47:41,862 INFO L226 Difference]: Without dead ends: 296 [2024-09-20 18:47:41,863 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 730 GetRequests, 584 SyntacticMatches, 72 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4127 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1445, Invalid=4255, Unknown=0, NotChecked=0, Total=5700 [2024-09-20 18:47:41,863 INFO L434 NwaCegarLoop]: 79 mSDtfsCounter, 0 mSDsluCounter, 523 mSDsCounter, 0 mSdLazyCounter, 989 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 602 SdHoareTripleChecker+Invalid, 989 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 989 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-20 18:47:41,863 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 602 Invalid, 989 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 989 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-20 18:47:41,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2024-09-20 18:47:41,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 296. [2024-09-20 18:47:41,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 220 states have (on average 1.009090909090909) internal successors, (222), 221 states have internal predecessors, (222), 38 states have call successors, (38), 38 states have call predecessors, (38), 37 states have return successors, (37), 36 states have call predecessors, (37), 37 states have call successors, (37) [2024-09-20 18:47:41,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 297 transitions. [2024-09-20 18:47:41,888 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 297 transitions. Word has length 292 [2024-09-20 18:47:41,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:47:41,888 INFO L474 AbstractCegarLoop]: Abstraction has 296 states and 297 transitions. [2024-09-20 18:47:41,888 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 76 states, 76 states have (on average 1.5526315789473684) internal successors, (118), 76 states have internal predecessors, (118), 37 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2024-09-20 18:47:41,888 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:47:41,888 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 297 transitions. [2024-09-20 18:47:41,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2024-09-20 18:47:41,890 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:47:41,890 INFO L216 NwaCegarLoop]: trace histogram [36, 36, 36, 36, 35, 35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:47:41,908 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Ended with exit code 0 [2024-09-20 18:47:42,091 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,71 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:47:42,091 INFO L399 AbstractCegarLoop]: === Iteration 73 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:47:42,091 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:47:42,091 INFO L85 PathProgramCache]: Analyzing trace with hash -1487952519, now seen corresponding path program 70 times [2024-09-20 18:47:42,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:47:42,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084663090] [2024-09-20 18:47:42,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:47:42,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:47:42,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:43,161 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:47:43,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:43,162 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-09-20 18:47:43,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:43,163 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-20 18:47:43,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:43,164 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-09-20 18:47:43,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:43,165 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-09-20 18:47:43,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:43,166 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-09-20 18:47:43,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:43,168 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-09-20 18:47:43,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:43,169 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-09-20 18:47:43,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:43,170 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-09-20 18:47:43,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:43,171 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2024-09-20 18:47:43,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:43,173 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-09-20 18:47:43,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:43,174 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2024-09-20 18:47:43,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:43,174 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-09-20 18:47:43,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:43,175 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2024-09-20 18:47:43,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:43,176 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2024-09-20 18:47:43,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:43,177 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2024-09-20 18:47:43,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:43,178 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-09-20 18:47:43,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:43,178 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2024-09-20 18:47:43,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:43,179 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2024-09-20 18:47:43,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:43,180 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2024-09-20 18:47:43,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:43,181 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2024-09-20 18:47:43,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:43,182 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2024-09-20 18:47:43,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:43,182 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2024-09-20 18:47:43,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:43,183 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2024-09-20 18:47:43,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:43,184 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2024-09-20 18:47:43,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:43,185 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2024-09-20 18:47:43,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:43,186 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2024-09-20 18:47:43,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:43,186 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2024-09-20 18:47:43,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:43,187 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2024-09-20 18:47:43,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:43,188 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2024-09-20 18:47:43,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:43,189 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2024-09-20 18:47:43,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:43,190 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2024-09-20 18:47:43,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:43,191 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2024-09-20 18:47:43,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:43,191 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2024-09-20 18:47:43,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:43,192 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2024-09-20 18:47:43,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:43,193 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2024-09-20 18:47:43,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:43,194 INFO L134 CoverageAnalysis]: Checked inductivity of 4971 backedges. 700 proven. 1891 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2024-09-20 18:47:43,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:47:43,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084663090] [2024-09-20 18:47:43,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084663090] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:47:43,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1705793835] [2024-09-20 18:47:43,195 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-20 18:47:43,195 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:47:43,195 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:47:43,196 INFO L229 MonitoredProcess]: Starting monitored process 72 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:47:43,197 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Waiting until timeout for monitored process [2024-09-20 18:47:43,298 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-20 18:47:43,299 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:47:43,301 INFO L262 TraceCheckSpWp]: Trace formula consists of 713 conjuncts, 78 conjuncts are in the unsatisfiable core [2024-09-20 18:47:43,304 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:47:43,456 INFO L134 CoverageAnalysis]: Checked inductivity of 4971 backedges. 736 proven. 1855 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2024-09-20 18:47:43,457 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:47:44,570 INFO L134 CoverageAnalysis]: Checked inductivity of 4971 backedges. 736 proven. 1855 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2024-09-20 18:47:44,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1705793835] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:47:44,571 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:47:44,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41, 41] total 44 [2024-09-20 18:47:44,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498767149] [2024-09-20 18:47:44,571 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:47:44,572 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-09-20 18:47:44,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:47:44,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-09-20 18:47:44,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=754, Invalid=1138, Unknown=0, NotChecked=0, Total=1892 [2024-09-20 18:47:44,573 INFO L87 Difference]: Start difference. First operand 296 states and 297 transitions. Second operand has 44 states, 44 states have (on average 2.75) internal successors, (121), 42 states have internal predecessors, (121), 37 states have call successors, (39), 3 states have call predecessors, (39), 1 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2024-09-20 18:47:44,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:47:44,788 INFO L93 Difference]: Finished difference Result 309 states and 311 transitions. [2024-09-20 18:47:44,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2024-09-20 18:47:44,789 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 2.75) internal successors, (121), 42 states have internal predecessors, (121), 37 states have call successors, (39), 3 states have call predecessors, (39), 1 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) Word has length 293 [2024-09-20 18:47:44,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:47:44,790 INFO L225 Difference]: With dead ends: 309 [2024-09-20 18:47:44,791 INFO L226 Difference]: Without dead ends: 307 [2024-09-20 18:47:44,791 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 734 GetRequests, 619 SyntacticMatches, 72 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1722 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=760, Invalid=1220, Unknown=0, NotChecked=0, Total=1980 [2024-09-20 18:47:44,791 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 380 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-20 18:47:44,791 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 111 Invalid, 381 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 380 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-20 18:47:44,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2024-09-20 18:47:44,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 303. [2024-09-20 18:47:44,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303 states, 225 states have (on average 1.008888888888889) internal successors, (227), 226 states have internal predecessors, (227), 39 states have call successors, (39), 39 states have call predecessors, (39), 38 states have return successors, (38), 37 states have call predecessors, (38), 38 states have call successors, (38) [2024-09-20 18:47:44,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 304 transitions. [2024-09-20 18:47:44,820 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 304 transitions. Word has length 293 [2024-09-20 18:47:44,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:47:44,820 INFO L474 AbstractCegarLoop]: Abstraction has 303 states and 304 transitions. [2024-09-20 18:47:44,821 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 2.75) internal successors, (121), 42 states have internal predecessors, (121), 37 states have call successors, (39), 3 states have call predecessors, (39), 1 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2024-09-20 18:47:44,821 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:47:44,821 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 304 transitions. [2024-09-20 18:47:44,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2024-09-20 18:47:44,822 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:47:44,822 INFO L216 NwaCegarLoop]: trace histogram [37, 37, 37, 36, 36, 36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:47:44,840 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Ended with exit code 0 [2024-09-20 18:47:45,023 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72,72 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:47:45,023 INFO L399 AbstractCegarLoop]: === Iteration 74 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:47:45,023 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:47:45,023 INFO L85 PathProgramCache]: Analyzing trace with hash 919933195, now seen corresponding path program 71 times [2024-09-20 18:47:45,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:47:45,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536780497] [2024-09-20 18:47:45,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:47:45,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:47:45,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:46,955 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:47:46,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:46,956 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-09-20 18:47:46,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:46,957 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-20 18:47:46,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:46,958 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-09-20 18:47:46,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:46,959 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-09-20 18:47:46,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:46,960 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-09-20 18:47:46,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:46,960 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-09-20 18:47:46,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:46,961 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-09-20 18:47:46,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:46,962 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-09-20 18:47:46,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:46,963 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2024-09-20 18:47:46,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:46,964 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-09-20 18:47:46,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:46,965 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2024-09-20 18:47:46,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:46,966 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-09-20 18:47:46,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:46,968 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2024-09-20 18:47:46,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:46,969 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2024-09-20 18:47:46,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:46,970 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2024-09-20 18:47:46,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:46,971 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-09-20 18:47:46,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:46,972 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2024-09-20 18:47:46,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:46,974 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2024-09-20 18:47:46,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:46,975 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2024-09-20 18:47:46,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:46,976 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2024-09-20 18:47:46,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:46,977 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2024-09-20 18:47:46,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:46,978 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2024-09-20 18:47:46,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:46,979 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2024-09-20 18:47:46,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:46,981 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2024-09-20 18:47:46,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:46,982 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2024-09-20 18:47:46,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:46,983 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2024-09-20 18:47:46,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:46,984 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2024-09-20 18:47:46,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:46,985 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2024-09-20 18:47:46,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:46,986 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2024-09-20 18:47:46,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:46,988 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2024-09-20 18:47:46,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:46,989 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2024-09-20 18:47:46,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:46,990 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2024-09-20 18:47:46,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:46,991 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2024-09-20 18:47:46,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:46,992 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2024-09-20 18:47:46,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:46,993 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2024-09-20 18:47:46,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:46,995 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2024-09-20 18:47:46,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:46,996 INFO L134 CoverageAnalysis]: Checked inductivity of 5220 backedges. 2034 proven. 666 refuted. 0 times theorem prover too weak. 2520 trivial. 0 not checked. [2024-09-20 18:47:46,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:47:46,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536780497] [2024-09-20 18:47:46,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536780497] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:47:46,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [299956816] [2024-09-20 18:47:46,997 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-20 18:47:46,997 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:47:46,997 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:47:46,999 INFO L229 MonitoredProcess]: Starting monitored process 73 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:47:47,000 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Waiting until timeout for monitored process [2024-09-20 18:47:47,127 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 37 check-sat command(s) [2024-09-20 18:47:47,127 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:47:47,130 INFO L262 TraceCheckSpWp]: Trace formula consists of 727 conjuncts, 76 conjuncts are in the unsatisfiable core [2024-09-20 18:47:47,132 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:47:47,268 INFO L134 CoverageAnalysis]: Checked inductivity of 5220 backedges. 2034 proven. 666 refuted. 0 times theorem prover too weak. 2520 trivial. 0 not checked. [2024-09-20 18:47:47,268 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:47:48,821 INFO L134 CoverageAnalysis]: Checked inductivity of 5220 backedges. 2034 proven. 666 refuted. 0 times theorem prover too weak. 2520 trivial. 0 not checked. [2024-09-20 18:47:48,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [299956816] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:47:48,821 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:47:48,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [77, 77, 77] total 78 [2024-09-20 18:47:48,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361181971] [2024-09-20 18:47:48,822 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:47:48,822 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 78 states [2024-09-20 18:47:48,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:47:48,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2024-09-20 18:47:48,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1522, Invalid=4484, Unknown=0, NotChecked=0, Total=6006 [2024-09-20 18:47:48,823 INFO L87 Difference]: Start difference. First operand 303 states and 304 transitions. Second operand has 78 states, 78 states have (on average 1.5512820512820513) internal successors, (121), 78 states have internal predecessors, (121), 38 states have call successors, (39), 2 states have call predecessors, (39), 1 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2024-09-20 18:47:49,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:47:49,279 INFO L93 Difference]: Finished difference Result 423 states and 461 transitions. [2024-09-20 18:47:49,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2024-09-20 18:47:49,279 INFO L78 Accepts]: Start accepts. Automaton has has 78 states, 78 states have (on average 1.5512820512820513) internal successors, (121), 78 states have internal predecessors, (121), 38 states have call successors, (39), 2 states have call predecessors, (39), 1 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) Word has length 300 [2024-09-20 18:47:49,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:47:49,281 INFO L225 Difference]: With dead ends: 423 [2024-09-20 18:47:49,281 INFO L226 Difference]: Without dead ends: 304 [2024-09-20 18:47:49,281 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 750 GetRequests, 600 SyntacticMatches, 74 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4353 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1522, Invalid=4484, Unknown=0, NotChecked=0, Total=6006 [2024-09-20 18:47:49,282 INFO L434 NwaCegarLoop]: 81 mSDtfsCounter, 0 mSDsluCounter, 536 mSDsCounter, 0 mSdLazyCounter, 898 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 617 SdHoareTripleChecker+Invalid, 898 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 898 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-20 18:47:49,282 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 617 Invalid, 898 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 898 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-20 18:47:49,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2024-09-20 18:47:49,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 304. [2024-09-20 18:47:49,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 226 states have (on average 1.008849557522124) internal successors, (228), 227 states have internal predecessors, (228), 39 states have call successors, (39), 39 states have call predecessors, (39), 38 states have return successors, (38), 37 states have call predecessors, (38), 38 states have call successors, (38) [2024-09-20 18:47:49,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 305 transitions. [2024-09-20 18:47:49,301 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 305 transitions. Word has length 300 [2024-09-20 18:47:49,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:47:49,301 INFO L474 AbstractCegarLoop]: Abstraction has 304 states and 305 transitions. [2024-09-20 18:47:49,302 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 78 states, 78 states have (on average 1.5512820512820513) internal successors, (121), 78 states have internal predecessors, (121), 38 states have call successors, (39), 2 states have call predecessors, (39), 1 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2024-09-20 18:47:49,302 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:47:49,302 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 305 transitions. [2024-09-20 18:47:49,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2024-09-20 18:47:49,303 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:47:49,303 INFO L216 NwaCegarLoop]: trace histogram [37, 37, 37, 37, 36, 36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:47:49,315 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Forceful destruction successful, exit code 0 [2024-09-20 18:47:49,503 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73,73 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:47:49,503 INFO L399 AbstractCegarLoop]: === Iteration 75 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:47:49,503 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:47:49,504 INFO L85 PathProgramCache]: Analyzing trace with hash -1019997801, now seen corresponding path program 72 times [2024-09-20 18:47:49,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:47:49,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649696331] [2024-09-20 18:47:49,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:47:49,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:47:49,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:50,640 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:47:50,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:50,641 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-20 18:47:50,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:50,642 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-09-20 18:47:50,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:50,643 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-20 18:47:50,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:50,644 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-09-20 18:47:50,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:50,645 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-09-20 18:47:50,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:50,645 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-09-20 18:47:50,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:50,646 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-20 18:47:50,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:50,647 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-09-20 18:47:50,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:50,648 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-09-20 18:47:50,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:50,649 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2024-09-20 18:47:50,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:50,649 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-09-20 18:47:50,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:50,650 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2024-09-20 18:47:50,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:50,651 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2024-09-20 18:47:50,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:50,652 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2024-09-20 18:47:50,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:50,653 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2024-09-20 18:47:50,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:50,654 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2024-09-20 18:47:50,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:50,655 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-09-20 18:47:50,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:50,655 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2024-09-20 18:47:50,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:50,656 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2024-09-20 18:47:50,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:50,657 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2024-09-20 18:47:50,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:50,658 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2024-09-20 18:47:50,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:50,659 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2024-09-20 18:47:50,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:50,659 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2024-09-20 18:47:50,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:50,660 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2024-09-20 18:47:50,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:50,661 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2024-09-20 18:47:50,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:50,662 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2024-09-20 18:47:50,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:50,663 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2024-09-20 18:47:50,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:50,664 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2024-09-20 18:47:50,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:50,664 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2024-09-20 18:47:50,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:50,665 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2024-09-20 18:47:50,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:50,666 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2024-09-20 18:47:50,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:50,667 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2024-09-20 18:47:50,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:50,668 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2024-09-20 18:47:50,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:50,668 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2024-09-20 18:47:50,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:50,669 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2024-09-20 18:47:50,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:50,670 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2024-09-20 18:47:50,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:50,671 INFO L134 CoverageAnalysis]: Checked inductivity of 5257 backedges. 738 proven. 1999 refuted. 0 times theorem prover too weak. 2520 trivial. 0 not checked. [2024-09-20 18:47:50,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:47:50,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649696331] [2024-09-20 18:47:50,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649696331] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:47:50,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1373677403] [2024-09-20 18:47:50,672 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-20 18:47:50,672 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:47:50,672 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:47:50,673 INFO L229 MonitoredProcess]: Starting monitored process 74 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:47:50,674 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Waiting until timeout for monitored process [2024-09-20 18:47:50,804 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 37 check-sat command(s) [2024-09-20 18:47:50,804 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:47:50,807 INFO L262 TraceCheckSpWp]: Trace formula consists of 732 conjuncts, 80 conjuncts are in the unsatisfiable core [2024-09-20 18:47:50,809 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:47:50,972 INFO L134 CoverageAnalysis]: Checked inductivity of 5257 backedges. 775 proven. 1962 refuted. 0 times theorem prover too weak. 2520 trivial. 0 not checked. [2024-09-20 18:47:50,972 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:47:52,133 INFO L134 CoverageAnalysis]: Checked inductivity of 5257 backedges. 775 proven. 1962 refuted. 0 times theorem prover too weak. 2520 trivial. 0 not checked. [2024-09-20 18:47:52,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1373677403] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:47:52,133 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:47:52,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42, 42] total 45 [2024-09-20 18:47:52,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920224216] [2024-09-20 18:47:52,133 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:47:52,134 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2024-09-20 18:47:52,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:47:52,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2024-09-20 18:47:52,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=793, Invalid=1187, Unknown=0, NotChecked=0, Total=1980 [2024-09-20 18:47:52,135 INFO L87 Difference]: Start difference. First operand 304 states and 305 transitions. Second operand has 45 states, 45 states have (on average 2.7555555555555555) internal successors, (124), 43 states have internal predecessors, (124), 38 states have call successors, (40), 3 states have call predecessors, (40), 1 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2024-09-20 18:47:52,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:47:52,377 INFO L93 Difference]: Finished difference Result 317 states and 319 transitions. [2024-09-20 18:47:52,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2024-09-20 18:47:52,377 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 2.7555555555555555) internal successors, (124), 43 states have internal predecessors, (124), 38 states have call successors, (40), 3 states have call predecessors, (40), 1 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) Word has length 301 [2024-09-20 18:47:52,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:47:52,379 INFO L225 Difference]: With dead ends: 317 [2024-09-20 18:47:52,379 INFO L226 Difference]: Without dead ends: 315 [2024-09-20 18:47:52,380 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 754 GetRequests, 636 SyntacticMatches, 74 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1807 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=799, Invalid=1271, Unknown=0, NotChecked=0, Total=2070 [2024-09-20 18:47:52,380 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 457 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 457 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-20 18:47:52,380 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 130 Invalid, 458 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 457 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-20 18:47:52,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2024-09-20 18:47:52,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 311. [2024-09-20 18:47:52,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 311 states, 231 states have (on average 1.0086580086580086) internal successors, (233), 232 states have internal predecessors, (233), 40 states have call successors, (40), 40 states have call predecessors, (40), 39 states have return successors, (39), 38 states have call predecessors, (39), 39 states have call successors, (39) [2024-09-20 18:47:52,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 312 transitions. [2024-09-20 18:47:52,399 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 312 transitions. Word has length 301 [2024-09-20 18:47:52,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:47:52,399 INFO L474 AbstractCegarLoop]: Abstraction has 311 states and 312 transitions. [2024-09-20 18:47:52,399 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 2.7555555555555555) internal successors, (124), 43 states have internal predecessors, (124), 38 states have call successors, (40), 3 states have call predecessors, (40), 1 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2024-09-20 18:47:52,399 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:47:52,399 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 312 transitions. [2024-09-20 18:47:52,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2024-09-20 18:47:52,400 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:47:52,400 INFO L216 NwaCegarLoop]: trace histogram [38, 38, 38, 37, 37, 37, 37, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:47:52,413 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Forceful destruction successful, exit code 0 [2024-09-20 18:47:52,601 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74,74 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:47:52,601 INFO L399 AbstractCegarLoop]: === Iteration 76 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:47:52,601 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:47:52,601 INFO L85 PathProgramCache]: Analyzing trace with hash -574462163, now seen corresponding path program 73 times [2024-09-20 18:47:52,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:47:52,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318309212] [2024-09-20 18:47:52,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:47:52,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:47:52,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:54,664 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:47:54,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:54,665 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-20 18:47:54,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:54,665 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-09-20 18:47:54,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:54,666 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-20 18:47:54,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:54,667 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-09-20 18:47:54,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:54,668 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-09-20 18:47:54,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:54,669 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-09-20 18:47:54,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:54,669 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-20 18:47:54,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:54,670 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-09-20 18:47:54,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:54,671 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-09-20 18:47:54,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:54,672 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2024-09-20 18:47:54,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:54,673 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-09-20 18:47:54,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:54,673 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2024-09-20 18:47:54,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:54,674 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2024-09-20 18:47:54,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:54,675 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2024-09-20 18:47:54,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:54,676 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2024-09-20 18:47:54,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:54,676 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2024-09-20 18:47:54,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:54,677 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-09-20 18:47:54,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:54,678 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2024-09-20 18:47:54,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:54,679 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2024-09-20 18:47:54,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:54,680 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2024-09-20 18:47:54,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:54,680 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2024-09-20 18:47:54,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:54,681 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2024-09-20 18:47:54,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:54,682 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2024-09-20 18:47:54,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:54,683 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2024-09-20 18:47:54,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:54,683 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2024-09-20 18:47:54,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:54,684 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2024-09-20 18:47:54,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:54,685 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2024-09-20 18:47:54,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:54,686 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2024-09-20 18:47:54,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:54,687 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2024-09-20 18:47:54,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:54,687 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2024-09-20 18:47:54,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:54,688 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2024-09-20 18:47:54,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:54,689 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2024-09-20 18:47:54,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:54,690 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2024-09-20 18:47:54,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:54,691 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2024-09-20 18:47:54,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:54,691 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2024-09-20 18:47:54,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:54,692 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2024-09-20 18:47:54,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:54,693 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2024-09-20 18:47:54,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:54,694 INFO L134 CoverageAnalysis]: Checked inductivity of 5513 backedges. 2146 proven. 703 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2024-09-20 18:47:54,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:47:54,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318309212] [2024-09-20 18:47:54,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318309212] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:47:54,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1607082912] [2024-09-20 18:47:54,695 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-20 18:47:54,695 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:47:54,695 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:47:54,696 INFO L229 MonitoredProcess]: Starting monitored process 75 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:47:54,697 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Waiting until timeout for monitored process [2024-09-20 18:47:54,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:54,800 INFO L262 TraceCheckSpWp]: Trace formula consists of 746 conjuncts, 78 conjuncts are in the unsatisfiable core [2024-09-20 18:47:54,803 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:47:54,941 INFO L134 CoverageAnalysis]: Checked inductivity of 5513 backedges. 2146 proven. 703 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2024-09-20 18:47:54,941 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:47:56,549 INFO L134 CoverageAnalysis]: Checked inductivity of 5513 backedges. 2146 proven. 703 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2024-09-20 18:47:56,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1607082912] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:47:56,549 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:47:56,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [79, 79, 79] total 80 [2024-09-20 18:47:56,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811069258] [2024-09-20 18:47:56,550 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:47:56,550 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 80 states [2024-09-20 18:47:56,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:47:56,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2024-09-20 18:47:56,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1601, Invalid=4719, Unknown=0, NotChecked=0, Total=6320 [2024-09-20 18:47:56,551 INFO L87 Difference]: Start difference. First operand 311 states and 312 transitions. Second operand has 80 states, 80 states have (on average 1.55) internal successors, (124), 80 states have internal predecessors, (124), 39 states have call successors, (40), 2 states have call predecessors, (40), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2024-09-20 18:47:56,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:47:56,984 INFO L93 Difference]: Finished difference Result 434 states and 473 transitions. [2024-09-20 18:47:56,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2024-09-20 18:47:56,985 INFO L78 Accepts]: Start accepts. Automaton has has 80 states, 80 states have (on average 1.55) internal successors, (124), 80 states have internal predecessors, (124), 39 states have call successors, (40), 2 states have call predecessors, (40), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) Word has length 308 [2024-09-20 18:47:56,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:47:56,986 INFO L225 Difference]: With dead ends: 434 [2024-09-20 18:47:56,986 INFO L226 Difference]: Without dead ends: 312 [2024-09-20 18:47:56,987 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 770 GetRequests, 616 SyntacticMatches, 76 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4585 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1601, Invalid=4719, Unknown=0, NotChecked=0, Total=6320 [2024-09-20 18:47:56,987 INFO L434 NwaCegarLoop]: 83 mSDtfsCounter, 0 mSDsluCounter, 559 mSDsCounter, 0 mSdLazyCounter, 766 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 642 SdHoareTripleChecker+Invalid, 766 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 766 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-20 18:47:56,988 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 642 Invalid, 766 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 766 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-20 18:47:56,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2024-09-20 18:47:57,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 312. [2024-09-20 18:47:57,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 312 states, 232 states have (on average 1.0086206896551724) internal successors, (234), 233 states have internal predecessors, (234), 40 states have call successors, (40), 40 states have call predecessors, (40), 39 states have return successors, (39), 38 states have call predecessors, (39), 39 states have call successors, (39) [2024-09-20 18:47:57,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 313 transitions. [2024-09-20 18:47:57,018 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 313 transitions. Word has length 308 [2024-09-20 18:47:57,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:47:57,019 INFO L474 AbstractCegarLoop]: Abstraction has 312 states and 313 transitions. [2024-09-20 18:47:57,019 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 80 states, 80 states have (on average 1.55) internal successors, (124), 80 states have internal predecessors, (124), 39 states have call successors, (40), 2 states have call predecessors, (40), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2024-09-20 18:47:57,019 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:47:57,019 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 313 transitions. [2024-09-20 18:47:57,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2024-09-20 18:47:57,020 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:47:57,021 INFO L216 NwaCegarLoop]: trace histogram [38, 38, 38, 38, 37, 37, 37, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:47:57,036 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Ended with exit code 0 [2024-09-20 18:47:57,221 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75,75 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:47:57,221 INFO L399 AbstractCegarLoop]: === Iteration 77 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:47:57,221 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:47:57,222 INFO L85 PathProgramCache]: Analyzing trace with hash -1332864071, now seen corresponding path program 74 times [2024-09-20 18:47:57,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:47:57,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130890442] [2024-09-20 18:47:57,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:47:57,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:47:57,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:58,485 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:47:58,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:58,486 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-20 18:47:58,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:58,487 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-20 18:47:58,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:58,488 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-09-20 18:47:58,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:58,489 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-20 18:47:58,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:58,489 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-09-20 18:47:58,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:58,491 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-09-20 18:47:58,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:58,492 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-09-20 18:47:58,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:58,493 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-20 18:47:58,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:58,494 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-09-20 18:47:58,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:58,496 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-09-20 18:47:58,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:58,497 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2024-09-20 18:47:58,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:58,498 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-09-20 18:47:58,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:58,499 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2024-09-20 18:47:58,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:58,500 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2024-09-20 18:47:58,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:58,501 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2024-09-20 18:47:58,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:58,503 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2024-09-20 18:47:58,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:58,504 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2024-09-20 18:47:58,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:58,505 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2024-09-20 18:47:58,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:58,506 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2024-09-20 18:47:58,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:58,507 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2024-09-20 18:47:58,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:58,509 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2024-09-20 18:47:58,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:58,510 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2024-09-20 18:47:58,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:58,511 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2024-09-20 18:47:58,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:58,512 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2024-09-20 18:47:58,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:58,513 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2024-09-20 18:47:58,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:58,514 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2024-09-20 18:47:58,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:58,516 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2024-09-20 18:47:58,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:58,517 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2024-09-20 18:47:58,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:58,518 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2024-09-20 18:47:58,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:58,519 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2024-09-20 18:47:58,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:58,521 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2024-09-20 18:47:58,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:58,522 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2024-09-20 18:47:58,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:58,523 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2024-09-20 18:47:58,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:58,524 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2024-09-20 18:47:58,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:58,525 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2024-09-20 18:47:58,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:58,526 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2024-09-20 18:47:58,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:58,528 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2024-09-20 18:47:58,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:58,529 INFO L134 CoverageAnalysis]: Checked inductivity of 5551 backedges. 777 proven. 2110 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2024-09-20 18:47:58,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:47:58,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130890442] [2024-09-20 18:47:58,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130890442] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:47:58,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [139769707] [2024-09-20 18:47:58,530 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-20 18:47:58,530 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:47:58,530 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:47:58,532 INFO L229 MonitoredProcess]: Starting monitored process 76 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:47:58,533 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Waiting until timeout for monitored process [2024-09-20 18:47:58,649 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-20 18:47:58,650 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:47:58,652 INFO L262 TraceCheckSpWp]: Trace formula consists of 751 conjuncts, 79 conjuncts are in the unsatisfiable core [2024-09-20 18:47:58,655 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:47:58,820 INFO L134 CoverageAnalysis]: Checked inductivity of 5551 backedges. 815 proven. 2072 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2024-09-20 18:47:58,820 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:48:00,022 INFO L134 CoverageAnalysis]: Checked inductivity of 5551 backedges. 815 proven. 2072 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2024-09-20 18:48:00,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [139769707] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:48:00,022 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:48:00,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43, 43] total 46 [2024-09-20 18:48:00,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690448048] [2024-09-20 18:48:00,023 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:48:00,023 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2024-09-20 18:48:00,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:48:00,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2024-09-20 18:48:00,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=833, Invalid=1237, Unknown=0, NotChecked=0, Total=2070 [2024-09-20 18:48:00,024 INFO L87 Difference]: Start difference. First operand 312 states and 313 transitions. Second operand has 46 states, 46 states have (on average 2.760869565217391) internal successors, (127), 44 states have internal predecessors, (127), 39 states have call successors, (41), 3 states have call predecessors, (41), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2024-09-20 18:48:00,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:48:00,244 INFO L93 Difference]: Finished difference Result 325 states and 327 transitions. [2024-09-20 18:48:00,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2024-09-20 18:48:00,245 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 2.760869565217391) internal successors, (127), 44 states have internal predecessors, (127), 39 states have call successors, (41), 3 states have call predecessors, (41), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) Word has length 309 [2024-09-20 18:48:00,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:48:00,247 INFO L225 Difference]: With dead ends: 325 [2024-09-20 18:48:00,247 INFO L226 Difference]: Without dead ends: 323 [2024-09-20 18:48:00,247 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 774 GetRequests, 651 SyntacticMatches, 78 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1972 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=839, Invalid=1323, Unknown=0, NotChecked=0, Total=2162 [2024-09-20 18:48:00,248 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 390 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-20 18:48:00,248 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 103 Invalid, 392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 390 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-20 18:48:00,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2024-09-20 18:48:00,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 319. [2024-09-20 18:48:00,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 319 states, 237 states have (on average 1.0084388185654007) internal successors, (239), 238 states have internal predecessors, (239), 41 states have call successors, (41), 41 states have call predecessors, (41), 40 states have return successors, (40), 39 states have call predecessors, (40), 40 states have call successors, (40) [2024-09-20 18:48:00,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 320 transitions. [2024-09-20 18:48:00,268 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 320 transitions. Word has length 309 [2024-09-20 18:48:00,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:48:00,268 INFO L474 AbstractCegarLoop]: Abstraction has 319 states and 320 transitions. [2024-09-20 18:48:00,268 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 2.760869565217391) internal successors, (127), 44 states have internal predecessors, (127), 39 states have call successors, (41), 3 states have call predecessors, (41), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2024-09-20 18:48:00,268 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:48:00,268 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 320 transitions. [2024-09-20 18:48:00,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2024-09-20 18:48:00,269 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:48:00,269 INFO L216 NwaCegarLoop]: trace histogram [39, 39, 39, 38, 38, 38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:48:00,282 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Forceful destruction successful, exit code 0 [2024-09-20 18:48:00,470 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76,76 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:48:00,470 INFO L399 AbstractCegarLoop]: === Iteration 78 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:48:00,470 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:48:00,470 INFO L85 PathProgramCache]: Analyzing trace with hash -1362029877, now seen corresponding path program 75 times [2024-09-20 18:48:00,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:48:00,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747223025] [2024-09-20 18:48:00,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:48:00,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:48:00,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:02,611 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:48:02,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:02,612 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-20 18:48:02,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:02,613 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-20 18:48:02,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:02,614 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-09-20 18:48:02,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:02,614 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-20 18:48:02,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:02,615 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-09-20 18:48:02,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:02,616 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-09-20 18:48:02,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:02,617 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-09-20 18:48:02,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:02,617 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-20 18:48:02,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:02,618 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-09-20 18:48:02,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:02,619 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-09-20 18:48:02,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:02,620 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2024-09-20 18:48:02,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:02,620 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-09-20 18:48:02,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:02,621 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2024-09-20 18:48:02,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:02,622 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2024-09-20 18:48:02,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:02,623 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2024-09-20 18:48:02,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:02,624 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2024-09-20 18:48:02,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:02,624 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2024-09-20 18:48:02,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:02,625 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2024-09-20 18:48:02,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:02,626 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2024-09-20 18:48:02,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:02,627 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2024-09-20 18:48:02,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:02,627 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2024-09-20 18:48:02,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:02,628 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2024-09-20 18:48:02,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:02,629 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2024-09-20 18:48:02,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:02,631 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2024-09-20 18:48:02,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:02,632 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2024-09-20 18:48:02,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:02,633 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2024-09-20 18:48:02,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:02,634 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2024-09-20 18:48:02,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:02,635 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2024-09-20 18:48:02,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:02,636 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2024-09-20 18:48:02,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:02,637 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2024-09-20 18:48:02,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:02,638 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2024-09-20 18:48:02,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:02,639 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2024-09-20 18:48:02,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:02,639 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2024-09-20 18:48:02,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:02,640 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2024-09-20 18:48:02,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:02,641 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2024-09-20 18:48:02,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:02,642 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2024-09-20 18:48:02,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:02,643 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2024-09-20 18:48:02,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:02,643 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2024-09-20 18:48:02,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:02,645 INFO L134 CoverageAnalysis]: Checked inductivity of 5814 backedges. 2261 proven. 741 refuted. 0 times theorem prover too weak. 2812 trivial. 0 not checked. [2024-09-20 18:48:02,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:48:02,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747223025] [2024-09-20 18:48:02,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747223025] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:48:02,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [602955599] [2024-09-20 18:48:02,645 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-20 18:48:02,645 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:48:02,645 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:48:02,646 INFO L229 MonitoredProcess]: Starting monitored process 77 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:48:02,648 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Waiting until timeout for monitored process [2024-09-20 18:48:02,787 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 39 check-sat command(s) [2024-09-20 18:48:02,787 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:48:02,790 INFO L262 TraceCheckSpWp]: Trace formula consists of 765 conjuncts, 80 conjuncts are in the unsatisfiable core [2024-09-20 18:48:02,793 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:48:02,939 INFO L134 CoverageAnalysis]: Checked inductivity of 5814 backedges. 2261 proven. 741 refuted. 0 times theorem prover too weak. 2812 trivial. 0 not checked. [2024-09-20 18:48:02,939 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:48:04,639 INFO L134 CoverageAnalysis]: Checked inductivity of 5814 backedges. 2261 proven. 741 refuted. 0 times theorem prover too weak. 2812 trivial. 0 not checked. [2024-09-20 18:48:04,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [602955599] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:48:04,640 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:48:04,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [81, 81, 81] total 82 [2024-09-20 18:48:04,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996465788] [2024-09-20 18:48:04,640 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:48:04,641 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 82 states [2024-09-20 18:48:04,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:48:04,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2024-09-20 18:48:04,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1682, Invalid=4960, Unknown=0, NotChecked=0, Total=6642 [2024-09-20 18:48:04,642 INFO L87 Difference]: Start difference. First operand 319 states and 320 transitions. Second operand has 82 states, 82 states have (on average 1.548780487804878) internal successors, (127), 82 states have internal predecessors, (127), 40 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2024-09-20 18:48:05,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:48:05,013 INFO L93 Difference]: Finished difference Result 445 states and 485 transitions. [2024-09-20 18:48:05,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2024-09-20 18:48:05,013 INFO L78 Accepts]: Start accepts. Automaton has has 82 states, 82 states have (on average 1.548780487804878) internal successors, (127), 82 states have internal predecessors, (127), 40 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) Word has length 316 [2024-09-20 18:48:05,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:48:05,015 INFO L225 Difference]: With dead ends: 445 [2024-09-20 18:48:05,015 INFO L226 Difference]: Without dead ends: 320 [2024-09-20 18:48:05,016 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 790 GetRequests, 632 SyntacticMatches, 78 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4823 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=1682, Invalid=4960, Unknown=0, NotChecked=0, Total=6642 [2024-09-20 18:48:05,016 INFO L434 NwaCegarLoop]: 85 mSDtfsCounter, 0 mSDsluCounter, 478 mSDsCounter, 0 mSdLazyCounter, 778 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 563 SdHoareTripleChecker+Invalid, 778 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 778 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-20 18:48:05,016 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 563 Invalid, 778 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 778 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-20 18:48:05,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2024-09-20 18:48:05,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 320. [2024-09-20 18:48:05,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 238 states have (on average 1.0084033613445378) internal successors, (240), 239 states have internal predecessors, (240), 41 states have call successors, (41), 41 states have call predecessors, (41), 40 states have return successors, (40), 39 states have call predecessors, (40), 40 states have call successors, (40) [2024-09-20 18:48:05,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 321 transitions. [2024-09-20 18:48:05,037 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 321 transitions. Word has length 316 [2024-09-20 18:48:05,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:48:05,038 INFO L474 AbstractCegarLoop]: Abstraction has 320 states and 321 transitions. [2024-09-20 18:48:05,038 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 82 states, 82 states have (on average 1.548780487804878) internal successors, (127), 82 states have internal predecessors, (127), 40 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2024-09-20 18:48:05,038 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:48:05,038 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 321 transitions. [2024-09-20 18:48:05,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2024-09-20 18:48:05,039 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:48:05,039 INFO L216 NwaCegarLoop]: trace histogram [39, 39, 39, 39, 38, 38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:48:05,052 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Forceful destruction successful, exit code 0 [2024-09-20 18:48:05,239 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 77 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable77 [2024-09-20 18:48:05,240 INFO L399 AbstractCegarLoop]: === Iteration 79 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:48:05,240 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:48:05,240 INFO L85 PathProgramCache]: Analyzing trace with hash -1172997289, now seen corresponding path program 76 times [2024-09-20 18:48:05,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:48:05,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148591744] [2024-09-20 18:48:05,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:48:05,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:48:05,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:06,515 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:48:06,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:06,516 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-09-20 18:48:06,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:06,517 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-09-20 18:48:06,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:06,517 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-09-20 18:48:06,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:06,518 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-20 18:48:06,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:06,519 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-20 18:48:06,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:06,520 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-09-20 18:48:06,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:06,521 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-09-20 18:48:06,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:06,521 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-09-20 18:48:06,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:06,522 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-09-20 18:48:06,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:06,523 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2024-09-20 18:48:06,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:06,524 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-09-20 18:48:06,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:06,525 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2024-09-20 18:48:06,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:06,526 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-09-20 18:48:06,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:06,526 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2024-09-20 18:48:06,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:06,527 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2024-09-20 18:48:06,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:06,528 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2024-09-20 18:48:06,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:06,529 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2024-09-20 18:48:06,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:06,530 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2024-09-20 18:48:06,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:06,530 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2024-09-20 18:48:06,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:06,531 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2024-09-20 18:48:06,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:06,532 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2024-09-20 18:48:06,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:06,533 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2024-09-20 18:48:06,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:06,534 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2024-09-20 18:48:06,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:06,534 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2024-09-20 18:48:06,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:06,536 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2024-09-20 18:48:06,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:06,537 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2024-09-20 18:48:06,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:06,538 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2024-09-20 18:48:06,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:06,539 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2024-09-20 18:48:06,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:06,540 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2024-09-20 18:48:06,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:06,542 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2024-09-20 18:48:06,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:06,543 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2024-09-20 18:48:06,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:06,544 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2024-09-20 18:48:06,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:06,545 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2024-09-20 18:48:06,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:06,547 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2024-09-20 18:48:06,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:06,548 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2024-09-20 18:48:06,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:06,549 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2024-09-20 18:48:06,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:06,550 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2024-09-20 18:48:06,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:06,552 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2024-09-20 18:48:06,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:06,553 INFO L134 CoverageAnalysis]: Checked inductivity of 5853 backedges. 817 proven. 2224 refuted. 0 times theorem prover too weak. 2812 trivial. 0 not checked. [2024-09-20 18:48:06,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:48:06,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148591744] [2024-09-20 18:48:06,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148591744] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:48:06,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [80081154] [2024-09-20 18:48:06,554 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-20 18:48:06,554 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:48:06,554 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:48:06,556 INFO L229 MonitoredProcess]: Starting monitored process 78 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:48:06,557 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Waiting until timeout for monitored process [2024-09-20 18:48:06,669 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-20 18:48:06,669 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:48:06,672 INFO L262 TraceCheckSpWp]: Trace formula consists of 770 conjuncts, 84 conjuncts are in the unsatisfiable core [2024-09-20 18:48:06,675 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:48:06,841 INFO L134 CoverageAnalysis]: Checked inductivity of 5853 backedges. 856 proven. 2185 refuted. 0 times theorem prover too weak. 2812 trivial. 0 not checked. [2024-09-20 18:48:06,842 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:48:08,056 INFO L134 CoverageAnalysis]: Checked inductivity of 5853 backedges. 856 proven. 2185 refuted. 0 times theorem prover too weak. 2812 trivial. 0 not checked. [2024-09-20 18:48:08,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [80081154] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:48:08,056 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:48:08,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44, 44] total 47 [2024-09-20 18:48:08,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096340100] [2024-09-20 18:48:08,056 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:48:08,057 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2024-09-20 18:48:08,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:48:08,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2024-09-20 18:48:08,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=874, Invalid=1288, Unknown=0, NotChecked=0, Total=2162 [2024-09-20 18:48:08,057 INFO L87 Difference]: Start difference. First operand 320 states and 321 transitions. Second operand has 47 states, 47 states have (on average 2.765957446808511) internal successors, (130), 45 states have internal predecessors, (130), 40 states have call successors, (42), 3 states have call predecessors, (42), 1 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2024-09-20 18:48:08,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:48:08,274 INFO L93 Difference]: Finished difference Result 333 states and 335 transitions. [2024-09-20 18:48:08,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2024-09-20 18:48:08,274 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 2.765957446808511) internal successors, (130), 45 states have internal predecessors, (130), 40 states have call successors, (42), 3 states have call predecessors, (42), 1 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) Word has length 317 [2024-09-20 18:48:08,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:48:08,276 INFO L225 Difference]: With dead ends: 333 [2024-09-20 18:48:08,276 INFO L226 Difference]: Without dead ends: 331 [2024-09-20 18:48:08,277 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 794 GetRequests, 670 SyntacticMatches, 78 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1983 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=880, Invalid=1376, Unknown=0, NotChecked=0, Total=2256 [2024-09-20 18:48:08,277 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 419 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 419 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-20 18:48:08,277 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 101 Invalid, 421 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 419 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-20 18:48:08,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2024-09-20 18:48:08,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 327. [2024-09-20 18:48:08,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 327 states, 243 states have (on average 1.008230452674897) internal successors, (245), 244 states have internal predecessors, (245), 42 states have call successors, (42), 42 states have call predecessors, (42), 41 states have return successors, (41), 40 states have call predecessors, (41), 41 states have call successors, (41) [2024-09-20 18:48:08,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 328 transitions. [2024-09-20 18:48:08,298 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 328 transitions. Word has length 317 [2024-09-20 18:48:08,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:48:08,298 INFO L474 AbstractCegarLoop]: Abstraction has 327 states and 328 transitions. [2024-09-20 18:48:08,298 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 2.765957446808511) internal successors, (130), 45 states have internal predecessors, (130), 40 states have call successors, (42), 3 states have call predecessors, (42), 1 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2024-09-20 18:48:08,298 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:48:08,298 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 328 transitions. [2024-09-20 18:48:08,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2024-09-20 18:48:08,299 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:48:08,299 INFO L216 NwaCegarLoop]: trace histogram [40, 40, 40, 39, 39, 39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:48:08,312 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Ended with exit code 0 [2024-09-20 18:48:08,500 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 78 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable78 [2024-09-20 18:48:08,500 INFO L399 AbstractCegarLoop]: === Iteration 80 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:48:08,500 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:48:08,500 INFO L85 PathProgramCache]: Analyzing trace with hash -603290259, now seen corresponding path program 77 times [2024-09-20 18:48:08,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:48:08,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910561407] [2024-09-20 18:48:08,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:48:08,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:48:08,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:10,738 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:48:10,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:10,739 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-09-20 18:48:10,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:10,740 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-09-20 18:48:10,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:10,741 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-09-20 18:48:10,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:10,742 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-20 18:48:10,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:10,743 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-20 18:48:10,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:10,744 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-09-20 18:48:10,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:10,745 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-09-20 18:48:10,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:10,746 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-09-20 18:48:10,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:10,747 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-09-20 18:48:10,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:10,749 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2024-09-20 18:48:10,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:10,750 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-09-20 18:48:10,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:10,751 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2024-09-20 18:48:10,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:10,752 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-09-20 18:48:10,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:10,753 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2024-09-20 18:48:10,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:10,754 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2024-09-20 18:48:10,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:10,756 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2024-09-20 18:48:10,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:10,757 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2024-09-20 18:48:10,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:10,758 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2024-09-20 18:48:10,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:10,759 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2024-09-20 18:48:10,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:10,760 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2024-09-20 18:48:10,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:10,761 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2024-09-20 18:48:10,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:10,762 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2024-09-20 18:48:10,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:10,763 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2024-09-20 18:48:10,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:10,765 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2024-09-20 18:48:10,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:10,766 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2024-09-20 18:48:10,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:10,767 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2024-09-20 18:48:10,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:10,768 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2024-09-20 18:48:10,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:10,769 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2024-09-20 18:48:10,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:10,770 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2024-09-20 18:48:10,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:10,771 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2024-09-20 18:48:10,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:10,772 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2024-09-20 18:48:10,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:10,773 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2024-09-20 18:48:10,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:10,775 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2024-09-20 18:48:10,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:10,776 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2024-09-20 18:48:10,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:10,777 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2024-09-20 18:48:10,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:10,778 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2024-09-20 18:48:10,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:10,779 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2024-09-20 18:48:10,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:10,780 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2024-09-20 18:48:10,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:10,782 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2024-09-20 18:48:10,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:10,783 INFO L134 CoverageAnalysis]: Checked inductivity of 6123 backedges. 2379 proven. 780 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2024-09-20 18:48:10,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:48:10,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910561407] [2024-09-20 18:48:10,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910561407] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:48:10,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [714666813] [2024-09-20 18:48:10,784 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-20 18:48:10,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:48:10,785 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:48:10,786 INFO L229 MonitoredProcess]: Starting monitored process 79 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:48:10,788 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Waiting until timeout for monitored process [2024-09-20 18:48:10,938 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 40 check-sat command(s) [2024-09-20 18:48:10,938 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:48:10,941 INFO L262 TraceCheckSpWp]: Trace formula consists of 784 conjuncts, 82 conjuncts are in the unsatisfiable core [2024-09-20 18:48:10,944 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:48:11,089 INFO L134 CoverageAnalysis]: Checked inductivity of 6123 backedges. 2379 proven. 780 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2024-09-20 18:48:11,089 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:48:12,840 INFO L134 CoverageAnalysis]: Checked inductivity of 6123 backedges. 2379 proven. 780 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2024-09-20 18:48:12,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [714666813] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:48:12,840 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:48:12,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [83, 83, 83] total 84 [2024-09-20 18:48:12,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764249588] [2024-09-20 18:48:12,840 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:48:12,841 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 84 states [2024-09-20 18:48:12,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:48:12,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2024-09-20 18:48:12,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1765, Invalid=5207, Unknown=0, NotChecked=0, Total=6972 [2024-09-20 18:48:12,842 INFO L87 Difference]: Start difference. First operand 327 states and 328 transitions. Second operand has 84 states, 84 states have (on average 1.5476190476190477) internal successors, (130), 84 states have internal predecessors, (130), 41 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2024-09-20 18:48:13,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:48:13,257 INFO L93 Difference]: Finished difference Result 456 states and 497 transitions. [2024-09-20 18:48:13,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2024-09-20 18:48:13,257 INFO L78 Accepts]: Start accepts. Automaton has has 84 states, 84 states have (on average 1.5476190476190477) internal successors, (130), 84 states have internal predecessors, (130), 41 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) Word has length 324 [2024-09-20 18:48:13,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:48:13,267 INFO L225 Difference]: With dead ends: 456 [2024-09-20 18:48:13,267 INFO L226 Difference]: Without dead ends: 328 [2024-09-20 18:48:13,268 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 810 GetRequests, 648 SyntacticMatches, 80 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5067 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=1765, Invalid=5207, Unknown=0, NotChecked=0, Total=6972 [2024-09-20 18:48:13,268 INFO L434 NwaCegarLoop]: 87 mSDtfsCounter, 0 mSDsluCounter, 489 mSDsCounter, 0 mSdLazyCounter, 919 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 576 SdHoareTripleChecker+Invalid, 919 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 919 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-20 18:48:13,268 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 576 Invalid, 919 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 919 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-20 18:48:13,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2024-09-20 18:48:13,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 328. [2024-09-20 18:48:13,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 244 states have (on average 1.0081967213114753) internal successors, (246), 245 states have internal predecessors, (246), 42 states have call successors, (42), 42 states have call predecessors, (42), 41 states have return successors, (41), 40 states have call predecessors, (41), 41 states have call successors, (41) [2024-09-20 18:48:13,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 329 transitions. [2024-09-20 18:48:13,301 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 329 transitions. Word has length 324 [2024-09-20 18:48:13,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:48:13,301 INFO L474 AbstractCegarLoop]: Abstraction has 328 states and 329 transitions. [2024-09-20 18:48:13,301 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 84 states, 84 states have (on average 1.5476190476190477) internal successors, (130), 84 states have internal predecessors, (130), 41 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2024-09-20 18:48:13,301 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:48:13,301 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 329 transitions. [2024-09-20 18:48:13,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2024-09-20 18:48:13,303 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:48:13,303 INFO L216 NwaCegarLoop]: trace histogram [40, 40, 40, 40, 39, 39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:48:13,320 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Ended with exit code 0 [2024-09-20 18:48:13,503 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79,79 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:48:13,503 INFO L399 AbstractCegarLoop]: === Iteration 81 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:48:13,504 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:48:13,504 INFO L85 PathProgramCache]: Analyzing trace with hash 1171497465, now seen corresponding path program 78 times [2024-09-20 18:48:13,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:48:13,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31795922] [2024-09-20 18:48:13,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:48:13,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:48:13,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:14,821 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:48:14,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:14,822 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-09-20 18:48:14,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:14,823 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-20 18:48:14,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:14,824 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-20 18:48:14,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:14,824 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-20 18:48:14,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:14,825 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-09-20 18:48:14,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:14,826 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-09-20 18:48:14,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:14,827 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-09-20 18:48:14,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:14,828 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-09-20 18:48:14,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:14,829 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-09-20 18:48:14,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:14,831 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-20 18:48:14,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:14,832 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2024-09-20 18:48:14,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:14,833 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-09-20 18:48:14,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:14,834 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2024-09-20 18:48:14,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:14,836 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2024-09-20 18:48:14,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:14,837 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2024-09-20 18:48:14,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:14,838 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-09-20 18:48:14,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:14,839 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2024-09-20 18:48:14,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:14,840 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2024-09-20 18:48:14,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:14,841 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2024-09-20 18:48:14,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:14,843 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2024-09-20 18:48:14,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:14,844 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2024-09-20 18:48:14,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:14,845 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2024-09-20 18:48:14,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:14,846 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2024-09-20 18:48:14,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:14,847 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2024-09-20 18:48:14,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:14,849 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2024-09-20 18:48:14,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:14,850 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2024-09-20 18:48:14,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:14,851 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2024-09-20 18:48:14,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:14,852 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2024-09-20 18:48:14,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:14,853 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2024-09-20 18:48:14,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:14,855 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2024-09-20 18:48:14,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:14,856 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2024-09-20 18:48:14,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:14,857 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2024-09-20 18:48:14,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:14,858 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2024-09-20 18:48:14,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:14,859 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2024-09-20 18:48:14,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:14,860 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2024-09-20 18:48:14,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:14,862 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2024-09-20 18:48:14,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:14,863 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2024-09-20 18:48:14,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:14,864 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2024-09-20 18:48:14,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:14,865 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2024-09-20 18:48:14,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:14,867 INFO L134 CoverageAnalysis]: Checked inductivity of 6163 backedges. 858 proven. 2341 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2024-09-20 18:48:14,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:48:14,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31795922] [2024-09-20 18:48:14,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31795922] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:48:14,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [563184520] [2024-09-20 18:48:14,867 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-20 18:48:14,868 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:48:14,868 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:48:14,870 INFO L229 MonitoredProcess]: Starting monitored process 80 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:48:14,872 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Waiting until timeout for monitored process [2024-09-20 18:48:15,036 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 40 check-sat command(s) [2024-09-20 18:48:15,036 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:48:15,039 INFO L262 TraceCheckSpWp]: Trace formula consists of 789 conjuncts, 86 conjuncts are in the unsatisfiable core [2024-09-20 18:48:15,043 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:48:15,219 INFO L134 CoverageAnalysis]: Checked inductivity of 6163 backedges. 898 proven. 2301 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2024-09-20 18:48:15,219 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:48:16,592 INFO L134 CoverageAnalysis]: Checked inductivity of 6163 backedges. 898 proven. 2301 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2024-09-20 18:48:16,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [563184520] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:48:16,593 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:48:16,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45, 45] total 48 [2024-09-20 18:48:16,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885355961] [2024-09-20 18:48:16,593 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:48:16,593 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2024-09-20 18:48:16,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:48:16,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2024-09-20 18:48:16,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=916, Invalid=1340, Unknown=0, NotChecked=0, Total=2256 [2024-09-20 18:48:16,594 INFO L87 Difference]: Start difference. First operand 328 states and 329 transitions. Second operand has 48 states, 48 states have (on average 2.7708333333333335) internal successors, (133), 46 states have internal predecessors, (133), 41 states have call successors, (43), 3 states have call predecessors, (43), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2024-09-20 18:48:16,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:48:16,814 INFO L93 Difference]: Finished difference Result 341 states and 343 transitions. [2024-09-20 18:48:16,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2024-09-20 18:48:16,815 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 2.7708333333333335) internal successors, (133), 46 states have internal predecessors, (133), 41 states have call successors, (43), 3 states have call predecessors, (43), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) Word has length 325 [2024-09-20 18:48:16,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:48:16,817 INFO L225 Difference]: With dead ends: 341 [2024-09-20 18:48:16,817 INFO L226 Difference]: Without dead ends: 339 [2024-09-20 18:48:16,817 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 814 GetRequests, 687 SyntacticMatches, 80 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2074 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=922, Invalid=1430, Unknown=0, NotChecked=0, Total=2352 [2024-09-20 18:48:16,817 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 424 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 424 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-20 18:48:16,817 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 102 Invalid, 425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 424 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-20 18:48:16,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2024-09-20 18:48:16,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 335. [2024-09-20 18:48:16,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 335 states, 249 states have (on average 1.0080321285140563) internal successors, (251), 250 states have internal predecessors, (251), 43 states have call successors, (43), 43 states have call predecessors, (43), 42 states have return successors, (42), 41 states have call predecessors, (42), 42 states have call successors, (42) [2024-09-20 18:48:16,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 336 transitions. [2024-09-20 18:48:16,839 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 336 transitions. Word has length 325 [2024-09-20 18:48:16,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:48:16,839 INFO L474 AbstractCegarLoop]: Abstraction has 335 states and 336 transitions. [2024-09-20 18:48:16,839 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 2.7708333333333335) internal successors, (133), 46 states have internal predecessors, (133), 41 states have call successors, (43), 3 states have call predecessors, (43), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2024-09-20 18:48:16,839 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:48:16,839 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 336 transitions. [2024-09-20 18:48:16,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2024-09-20 18:48:16,840 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:48:16,840 INFO L216 NwaCegarLoop]: trace histogram [41, 41, 41, 40, 40, 40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:48:16,852 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Ended with exit code 0 [2024-09-20 18:48:17,041 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,80 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:48:17,041 INFO L399 AbstractCegarLoop]: === Iteration 82 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:48:17,041 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:48:17,041 INFO L85 PathProgramCache]: Analyzing trace with hash 1739850891, now seen corresponding path program 79 times [2024-09-20 18:48:17,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:48:17,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303486186] [2024-09-20 18:48:17,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:48:17,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:48:17,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:19,430 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:48:19,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:19,431 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-09-20 18:48:19,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:19,432 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-20 18:48:19,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:19,433 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-20 18:48:19,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:19,434 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-20 18:48:19,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:19,436 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-09-20 18:48:19,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:19,437 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-09-20 18:48:19,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:19,438 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-09-20 18:48:19,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:19,439 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-09-20 18:48:19,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:19,440 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-09-20 18:48:19,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:19,441 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-20 18:48:19,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:19,442 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2024-09-20 18:48:19,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:19,444 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-09-20 18:48:19,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:19,445 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2024-09-20 18:48:19,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:19,446 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2024-09-20 18:48:19,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:19,447 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2024-09-20 18:48:19,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:19,448 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-09-20 18:48:19,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:19,449 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2024-09-20 18:48:19,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:19,450 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2024-09-20 18:48:19,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:19,451 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2024-09-20 18:48:19,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:19,452 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2024-09-20 18:48:19,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:19,453 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2024-09-20 18:48:19,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:19,454 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2024-09-20 18:48:19,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:19,455 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2024-09-20 18:48:19,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:19,455 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2024-09-20 18:48:19,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:19,456 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2024-09-20 18:48:19,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:19,457 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2024-09-20 18:48:19,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:19,458 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2024-09-20 18:48:19,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:19,458 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2024-09-20 18:48:19,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:19,459 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2024-09-20 18:48:19,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:19,460 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2024-09-20 18:48:19,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:19,461 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2024-09-20 18:48:19,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:19,462 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2024-09-20 18:48:19,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:19,462 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2024-09-20 18:48:19,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:19,463 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2024-09-20 18:48:19,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:19,464 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2024-09-20 18:48:19,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:19,465 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2024-09-20 18:48:19,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:19,466 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2024-09-20 18:48:19,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:19,467 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2024-09-20 18:48:19,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:19,468 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2024-09-20 18:48:19,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:19,469 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2024-09-20 18:48:19,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:19,471 INFO L134 CoverageAnalysis]: Checked inductivity of 6440 backedges. 2500 proven. 820 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2024-09-20 18:48:19,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:48:19,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303486186] [2024-09-20 18:48:19,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303486186] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:48:19,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1802569870] [2024-09-20 18:48:19,471 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-20 18:48:19,471 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:48:19,471 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:48:19,473 INFO L229 MonitoredProcess]: Starting monitored process 81 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:48:19,473 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Waiting until timeout for monitored process [2024-09-20 18:48:19,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:19,584 INFO L262 TraceCheckSpWp]: Trace formula consists of 803 conjuncts, 84 conjuncts are in the unsatisfiable core [2024-09-20 18:48:19,587 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:48:19,734 INFO L134 CoverageAnalysis]: Checked inductivity of 6440 backedges. 2500 proven. 820 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2024-09-20 18:48:19,734 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:48:21,574 INFO L134 CoverageAnalysis]: Checked inductivity of 6440 backedges. 2500 proven. 820 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2024-09-20 18:48:21,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1802569870] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:48:21,574 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:48:21,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [85, 85, 85] total 86 [2024-09-20 18:48:21,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097569] [2024-09-20 18:48:21,574 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:48:21,575 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 86 states [2024-09-20 18:48:21,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:48:21,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2024-09-20 18:48:21,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1850, Invalid=5460, Unknown=0, NotChecked=0, Total=7310 [2024-09-20 18:48:21,576 INFO L87 Difference]: Start difference. First operand 335 states and 336 transitions. Second operand has 86 states, 86 states have (on average 1.5465116279069768) internal successors, (133), 86 states have internal predecessors, (133), 42 states have call successors, (43), 2 states have call predecessors, (43), 1 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2024-09-20 18:48:22,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:48:22,022 INFO L93 Difference]: Finished difference Result 467 states and 509 transitions. [2024-09-20 18:48:22,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2024-09-20 18:48:22,023 INFO L78 Accepts]: Start accepts. Automaton has has 86 states, 86 states have (on average 1.5465116279069768) internal successors, (133), 86 states have internal predecessors, (133), 42 states have call successors, (43), 2 states have call predecessors, (43), 1 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) Word has length 332 [2024-09-20 18:48:22,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:48:22,025 INFO L225 Difference]: With dead ends: 467 [2024-09-20 18:48:22,025 INFO L226 Difference]: Without dead ends: 336 [2024-09-20 18:48:22,026 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 830 GetRequests, 664 SyntacticMatches, 82 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5317 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=1850, Invalid=5460, Unknown=0, NotChecked=0, Total=7310 [2024-09-20 18:48:22,027 INFO L434 NwaCegarLoop]: 89 mSDtfsCounter, 0 mSDsluCounter, 549 mSDsCounter, 0 mSdLazyCounter, 1003 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 638 SdHoareTripleChecker+Invalid, 1003 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1003 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-20 18:48:22,027 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 638 Invalid, 1003 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1003 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-20 18:48:22,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2024-09-20 18:48:22,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 336. [2024-09-20 18:48:22,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 336 states, 250 states have (on average 1.008) internal successors, (252), 251 states have internal predecessors, (252), 43 states have call successors, (43), 43 states have call predecessors, (43), 42 states have return successors, (42), 41 states have call predecessors, (42), 42 states have call successors, (42) [2024-09-20 18:48:22,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 337 transitions. [2024-09-20 18:48:22,061 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 337 transitions. Word has length 332 [2024-09-20 18:48:22,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:48:22,061 INFO L474 AbstractCegarLoop]: Abstraction has 336 states and 337 transitions. [2024-09-20 18:48:22,061 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 86 states, 86 states have (on average 1.5465116279069768) internal successors, (133), 86 states have internal predecessors, (133), 42 states have call successors, (43), 2 states have call predecessors, (43), 1 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2024-09-20 18:48:22,061 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:48:22,062 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 337 transitions. [2024-09-20 18:48:22,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2024-09-20 18:48:22,063 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:48:22,063 INFO L216 NwaCegarLoop]: trace histogram [41, 41, 41, 41, 40, 40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:48:22,080 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Ended with exit code 0 [2024-09-20 18:48:22,263 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,81 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:48:22,264 INFO L399 AbstractCegarLoop]: === Iteration 83 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:48:22,264 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:48:22,264 INFO L85 PathProgramCache]: Analyzing trace with hash -1978804969, now seen corresponding path program 80 times [2024-09-20 18:48:22,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:48:22,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743403642] [2024-09-20 18:48:22,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:48:22,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:48:22,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:23,653 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:48:23,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:23,654 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-09-20 18:48:23,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:23,655 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-20 18:48:23,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:23,656 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-20 18:48:23,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:23,657 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-09-20 18:48:23,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:23,658 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-09-20 18:48:23,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:23,658 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-09-20 18:48:23,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:23,659 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-09-20 18:48:23,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:23,660 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-09-20 18:48:23,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:23,661 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-20 18:48:23,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:23,662 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2024-09-20 18:48:23,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:23,662 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2024-09-20 18:48:23,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:23,663 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2024-09-20 18:48:23,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:23,664 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2024-09-20 18:48:23,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:23,665 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2024-09-20 18:48:23,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:23,666 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-09-20 18:48:23,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:23,667 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2024-09-20 18:48:23,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:23,668 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2024-09-20 18:48:23,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:23,669 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2024-09-20 18:48:23,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:23,670 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2024-09-20 18:48:23,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:23,672 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2024-09-20 18:48:23,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:23,673 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2024-09-20 18:48:23,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:23,674 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2024-09-20 18:48:23,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:23,675 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2024-09-20 18:48:23,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:23,676 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2024-09-20 18:48:23,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:23,677 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2024-09-20 18:48:23,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:23,679 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2024-09-20 18:48:23,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:23,680 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2024-09-20 18:48:23,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:23,681 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2024-09-20 18:48:23,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:23,682 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2024-09-20 18:48:23,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:23,683 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2024-09-20 18:48:23,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:23,684 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2024-09-20 18:48:23,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:23,686 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2024-09-20 18:48:23,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:23,687 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2024-09-20 18:48:23,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:23,688 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2024-09-20 18:48:23,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:23,689 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2024-09-20 18:48:23,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:23,691 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2024-09-20 18:48:23,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:23,692 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2024-09-20 18:48:23,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:23,693 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2024-09-20 18:48:23,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:23,694 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2024-09-20 18:48:23,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:23,696 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2024-09-20 18:48:23,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:23,697 INFO L134 CoverageAnalysis]: Checked inductivity of 6481 backedges. 900 proven. 2461 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2024-09-20 18:48:23,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:48:23,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743403642] [2024-09-20 18:48:23,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743403642] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:48:23,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [700603133] [2024-09-20 18:48:23,698 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-20 18:48:23,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:48:23,698 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:48:23,700 INFO L229 MonitoredProcess]: Starting monitored process 82 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:48:23,702 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Waiting until timeout for monitored process [2024-09-20 18:48:23,817 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-20 18:48:23,817 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:48:23,819 INFO L262 TraceCheckSpWp]: Trace formula consists of 808 conjuncts, 85 conjuncts are in the unsatisfiable core [2024-09-20 18:48:23,822 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:48:23,999 INFO L134 CoverageAnalysis]: Checked inductivity of 6481 backedges. 941 proven. 2420 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2024-09-20 18:48:23,999 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:48:25,369 INFO L134 CoverageAnalysis]: Checked inductivity of 6481 backedges. 941 proven. 2420 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2024-09-20 18:48:25,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [700603133] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:48:25,369 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:48:25,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46, 46] total 49 [2024-09-20 18:48:25,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271537953] [2024-09-20 18:48:25,369 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:48:25,370 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-09-20 18:48:25,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:48:25,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-09-20 18:48:25,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=959, Invalid=1393, Unknown=0, NotChecked=0, Total=2352 [2024-09-20 18:48:25,371 INFO L87 Difference]: Start difference. First operand 336 states and 337 transitions. Second operand has 49 states, 49 states have (on average 2.7755102040816326) internal successors, (136), 47 states have internal predecessors, (136), 42 states have call successors, (44), 3 states have call predecessors, (44), 1 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2024-09-20 18:48:25,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:48:25,611 INFO L93 Difference]: Finished difference Result 349 states and 351 transitions. [2024-09-20 18:48:25,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2024-09-20 18:48:25,612 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 2.7755102040816326) internal successors, (136), 47 states have internal predecessors, (136), 42 states have call successors, (44), 3 states have call predecessors, (44), 1 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) Word has length 333 [2024-09-20 18:48:25,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:48:25,614 INFO L225 Difference]: With dead ends: 349 [2024-09-20 18:48:25,614 INFO L226 Difference]: Without dead ends: 347 [2024-09-20 18:48:25,614 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 834 GetRequests, 702 SyntacticMatches, 84 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2251 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=965, Invalid=1485, Unknown=0, NotChecked=0, Total=2450 [2024-09-20 18:48:25,614 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 467 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 467 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-20 18:48:25,614 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 130 Invalid, 468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 467 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-20 18:48:25,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2024-09-20 18:48:25,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 343. [2024-09-20 18:48:25,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 343 states, 255 states have (on average 1.007843137254902) internal successors, (257), 256 states have internal predecessors, (257), 44 states have call successors, (44), 44 states have call predecessors, (44), 43 states have return successors, (43), 42 states have call predecessors, (43), 43 states have call successors, (43) [2024-09-20 18:48:25,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 344 transitions. [2024-09-20 18:48:25,644 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 344 transitions. Word has length 333 [2024-09-20 18:48:25,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:48:25,644 INFO L474 AbstractCegarLoop]: Abstraction has 343 states and 344 transitions. [2024-09-20 18:48:25,644 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 2.7755102040816326) internal successors, (136), 47 states have internal predecessors, (136), 42 states have call successors, (44), 3 states have call predecessors, (44), 1 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2024-09-20 18:48:25,644 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:48:25,645 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 344 transitions. [2024-09-20 18:48:25,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2024-09-20 18:48:25,646 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:48:25,646 INFO L216 NwaCegarLoop]: trace histogram [42, 42, 42, 41, 41, 41, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:48:25,658 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Ended with exit code 0 [2024-09-20 18:48:25,847 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 82 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable82 [2024-09-20 18:48:25,847 INFO L399 AbstractCegarLoop]: === Iteration 84 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:48:25,847 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:48:25,847 INFO L85 PathProgramCache]: Analyzing trace with hash -695356499, now seen corresponding path program 81 times [2024-09-20 18:48:25,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:48:25,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325288205] [2024-09-20 18:48:25,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:48:25,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:48:25,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:28,371 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:48:28,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:28,372 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-09-20 18:48:28,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:28,374 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-20 18:48:28,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:28,375 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-20 18:48:28,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:28,376 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-09-20 18:48:28,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:28,377 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-09-20 18:48:28,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:28,378 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-09-20 18:48:28,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:28,379 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-09-20 18:48:28,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:28,380 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-09-20 18:48:28,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:28,382 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-20 18:48:28,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:28,383 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2024-09-20 18:48:28,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:28,385 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2024-09-20 18:48:28,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:28,386 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2024-09-20 18:48:28,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:28,388 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2024-09-20 18:48:28,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:28,390 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2024-09-20 18:48:28,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:28,391 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-09-20 18:48:28,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:28,393 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2024-09-20 18:48:28,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:28,394 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2024-09-20 18:48:28,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:28,396 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2024-09-20 18:48:28,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:28,397 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2024-09-20 18:48:28,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:28,399 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2024-09-20 18:48:28,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:28,400 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2024-09-20 18:48:28,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:28,401 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2024-09-20 18:48:28,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:28,402 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2024-09-20 18:48:28,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:28,403 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2024-09-20 18:48:28,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:28,404 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2024-09-20 18:48:28,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:28,406 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2024-09-20 18:48:28,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:28,407 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2024-09-20 18:48:28,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:28,408 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2024-09-20 18:48:28,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:28,409 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2024-09-20 18:48:28,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:28,410 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2024-09-20 18:48:28,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:28,411 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2024-09-20 18:48:28,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:28,412 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2024-09-20 18:48:28,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:28,414 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2024-09-20 18:48:28,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:28,415 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2024-09-20 18:48:28,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:28,416 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2024-09-20 18:48:28,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:28,417 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2024-09-20 18:48:28,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:28,418 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2024-09-20 18:48:28,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:28,420 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2024-09-20 18:48:28,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:28,422 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2024-09-20 18:48:28,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:28,423 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2024-09-20 18:48:28,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:28,425 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2024-09-20 18:48:28,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:28,428 INFO L134 CoverageAnalysis]: Checked inductivity of 6765 backedges. 2624 proven. 861 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2024-09-20 18:48:28,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:48:28,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325288205] [2024-09-20 18:48:28,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1325288205] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:48:28,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2017780730] [2024-09-20 18:48:28,429 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-20 18:48:28,429 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:48:28,429 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:48:28,431 INFO L229 MonitoredProcess]: Starting monitored process 83 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:48:28,432 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Waiting until timeout for monitored process [2024-09-20 18:48:28,596 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 42 check-sat command(s) [2024-09-20 18:48:28,596 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:48:28,599 INFO L262 TraceCheckSpWp]: Trace formula consists of 822 conjuncts, 86 conjuncts are in the unsatisfiable core [2024-09-20 18:48:28,604 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:48:28,758 INFO L134 CoverageAnalysis]: Checked inductivity of 6765 backedges. 2624 proven. 861 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2024-09-20 18:48:28,759 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:48:30,680 INFO L134 CoverageAnalysis]: Checked inductivity of 6765 backedges. 2624 proven. 861 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2024-09-20 18:48:30,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2017780730] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:48:30,680 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:48:30,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [87, 87, 87] total 88 [2024-09-20 18:48:30,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723981889] [2024-09-20 18:48:30,680 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:48:30,681 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 88 states [2024-09-20 18:48:30,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:48:30,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2024-09-20 18:48:30,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1937, Invalid=5719, Unknown=0, NotChecked=0, Total=7656 [2024-09-20 18:48:30,682 INFO L87 Difference]: Start difference. First operand 343 states and 344 transitions. Second operand has 88 states, 88 states have (on average 1.5454545454545454) internal successors, (136), 88 states have internal predecessors, (136), 43 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2024-09-20 18:48:31,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:48:31,126 INFO L93 Difference]: Finished difference Result 478 states and 521 transitions. [2024-09-20 18:48:31,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2024-09-20 18:48:31,127 INFO L78 Accepts]: Start accepts. Automaton has has 88 states, 88 states have (on average 1.5454545454545454) internal successors, (136), 88 states have internal predecessors, (136), 43 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) Word has length 340 [2024-09-20 18:48:31,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:48:31,129 INFO L225 Difference]: With dead ends: 478 [2024-09-20 18:48:31,130 INFO L226 Difference]: Without dead ends: 344 [2024-09-20 18:48:31,131 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 850 GetRequests, 680 SyntacticMatches, 84 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5573 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=1937, Invalid=5719, Unknown=0, NotChecked=0, Total=7656 [2024-09-20 18:48:31,131 INFO L434 NwaCegarLoop]: 91 mSDtfsCounter, 0 mSDsluCounter, 611 mSDsCounter, 0 mSdLazyCounter, 859 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 702 SdHoareTripleChecker+Invalid, 859 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 859 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-20 18:48:31,131 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 702 Invalid, 859 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 859 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-20 18:48:31,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2024-09-20 18:48:31,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 344. [2024-09-20 18:48:31,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 344 states, 256 states have (on average 1.0078125) internal successors, (258), 257 states have internal predecessors, (258), 44 states have call successors, (44), 44 states have call predecessors, (44), 43 states have return successors, (43), 42 states have call predecessors, (43), 43 states have call successors, (43) [2024-09-20 18:48:31,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 345 transitions. [2024-09-20 18:48:31,160 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 345 transitions. Word has length 340 [2024-09-20 18:48:31,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:48:31,160 INFO L474 AbstractCegarLoop]: Abstraction has 344 states and 345 transitions. [2024-09-20 18:48:31,160 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 88 states, 88 states have (on average 1.5454545454545454) internal successors, (136), 88 states have internal predecessors, (136), 43 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2024-09-20 18:48:31,160 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:48:31,160 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 345 transitions. [2024-09-20 18:48:31,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 342 [2024-09-20 18:48:31,161 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:48:31,161 INFO L216 NwaCegarLoop]: trace histogram [42, 42, 42, 42, 41, 41, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:48:31,173 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Ended with exit code 0 [2024-09-20 18:48:31,362 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83,83 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:48:31,362 INFO L399 AbstractCegarLoop]: === Iteration 85 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:48:31,362 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:48:31,362 INFO L85 PathProgramCache]: Analyzing trace with hash 1065629753, now seen corresponding path program 82 times [2024-09-20 18:48:31,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:48:31,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565217464] [2024-09-20 18:48:31,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:48:31,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:48:31,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:32,870 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:48:32,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:32,871 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-20 18:48:32,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:32,872 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-09-20 18:48:32,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:32,873 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-20 18:48:32,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:32,873 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-09-20 18:48:32,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:32,874 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-09-20 18:48:32,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:32,875 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-09-20 18:48:32,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:32,876 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-09-20 18:48:32,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:32,877 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-09-20 18:48:32,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:32,877 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-09-20 18:48:32,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:32,878 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2024-09-20 18:48:32,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:32,879 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2024-09-20 18:48:32,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:32,880 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2024-09-20 18:48:32,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:32,880 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2024-09-20 18:48:32,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:32,881 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2024-09-20 18:48:32,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:32,882 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2024-09-20 18:48:32,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:32,883 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2024-09-20 18:48:32,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:32,883 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2024-09-20 18:48:32,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:32,884 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2024-09-20 18:48:32,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:32,885 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2024-09-20 18:48:32,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:32,886 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2024-09-20 18:48:32,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:32,887 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2024-09-20 18:48:32,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:32,888 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2024-09-20 18:48:32,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:32,889 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2024-09-20 18:48:32,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:32,889 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2024-09-20 18:48:32,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:32,891 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2024-09-20 18:48:32,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:32,892 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2024-09-20 18:48:32,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:32,893 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2024-09-20 18:48:32,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:32,894 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2024-09-20 18:48:32,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:32,895 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2024-09-20 18:48:32,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:32,897 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2024-09-20 18:48:32,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:32,898 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2024-09-20 18:48:32,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:32,899 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2024-09-20 18:48:32,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:32,900 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2024-09-20 18:48:32,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:32,901 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2024-09-20 18:48:32,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:32,902 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2024-09-20 18:48:32,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:32,904 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2024-09-20 18:48:32,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:32,905 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2024-09-20 18:48:32,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:32,906 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2024-09-20 18:48:32,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:32,907 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2024-09-20 18:48:32,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:32,908 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 323 [2024-09-20 18:48:32,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:32,910 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2024-09-20 18:48:32,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:32,911 INFO L134 CoverageAnalysis]: Checked inductivity of 6807 backedges. 943 proven. 2584 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2024-09-20 18:48:32,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:48:32,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565217464] [2024-09-20 18:48:32,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565217464] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:48:32,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1784316203] [2024-09-20 18:48:32,912 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-20 18:48:32,912 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:48:32,912 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:48:32,913 INFO L229 MonitoredProcess]: Starting monitored process 84 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:48:32,914 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Waiting until timeout for monitored process [2024-09-20 18:48:33,032 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-20 18:48:33,032 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:48:33,036 INFO L262 TraceCheckSpWp]: Trace formula consists of 827 conjuncts, 90 conjuncts are in the unsatisfiable core [2024-09-20 18:48:33,039 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:48:33,214 INFO L134 CoverageAnalysis]: Checked inductivity of 6807 backedges. 985 proven. 2542 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2024-09-20 18:48:33,214 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:48:34,601 INFO L134 CoverageAnalysis]: Checked inductivity of 6807 backedges. 985 proven. 2542 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2024-09-20 18:48:34,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1784316203] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:48:34,602 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:48:34,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47, 47] total 50 [2024-09-20 18:48:34,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138167229] [2024-09-20 18:48:34,602 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:48:34,602 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2024-09-20 18:48:34,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:48:34,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2024-09-20 18:48:34,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1003, Invalid=1447, Unknown=0, NotChecked=0, Total=2450 [2024-09-20 18:48:34,603 INFO L87 Difference]: Start difference. First operand 344 states and 345 transitions. Second operand has 50 states, 50 states have (on average 2.78) internal successors, (139), 48 states have internal predecessors, (139), 43 states have call successors, (45), 3 states have call predecessors, (45), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2024-09-20 18:48:34,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:48:34,839 INFO L93 Difference]: Finished difference Result 357 states and 359 transitions. [2024-09-20 18:48:34,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-09-20 18:48:34,840 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 2.78) internal successors, (139), 48 states have internal predecessors, (139), 43 states have call successors, (45), 3 states have call predecessors, (45), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) Word has length 341 [2024-09-20 18:48:34,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:48:34,842 INFO L225 Difference]: With dead ends: 357 [2024-09-20 18:48:34,842 INFO L226 Difference]: Without dead ends: 355 [2024-09-20 18:48:34,842 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 854 GetRequests, 721 SyntacticMatches, 84 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2262 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1009, Invalid=1541, Unknown=0, NotChecked=0, Total=2550 [2024-09-20 18:48:34,842 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 447 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 447 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-20 18:48:34,842 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 121 Invalid, 449 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 447 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-20 18:48:34,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2024-09-20 18:48:34,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 351. [2024-09-20 18:48:34,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 351 states, 261 states have (on average 1.0076628352490422) internal successors, (263), 262 states have internal predecessors, (263), 45 states have call successors, (45), 45 states have call predecessors, (45), 44 states have return successors, (44), 43 states have call predecessors, (44), 44 states have call successors, (44) [2024-09-20 18:48:34,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 352 transitions. [2024-09-20 18:48:34,869 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 352 transitions. Word has length 341 [2024-09-20 18:48:34,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:48:34,869 INFO L474 AbstractCegarLoop]: Abstraction has 351 states and 352 transitions. [2024-09-20 18:48:34,869 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 2.78) internal successors, (139), 48 states have internal predecessors, (139), 43 states have call successors, (45), 3 states have call predecessors, (45), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2024-09-20 18:48:34,870 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:48:34,870 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 352 transitions. [2024-09-20 18:48:34,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 349 [2024-09-20 18:48:34,871 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:48:34,871 INFO L216 NwaCegarLoop]: trace histogram [43, 43, 43, 42, 42, 42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:48:34,883 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Ended with exit code 0 [2024-09-20 18:48:35,071 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84,84 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:48:35,072 INFO L399 AbstractCegarLoop]: === Iteration 86 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:48:35,072 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:48:35,072 INFO L85 PathProgramCache]: Analyzing trace with hash 278521419, now seen corresponding path program 83 times [2024-09-20 18:48:35,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:48:35,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629466957] [2024-09-20 18:48:35,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:48:35,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:48:35,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:37,676 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:48:37,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:37,677 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-20 18:48:37,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:37,678 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-09-20 18:48:37,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:37,678 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-20 18:48:37,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:37,679 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-09-20 18:48:37,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:37,680 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-09-20 18:48:37,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:37,681 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-09-20 18:48:37,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:37,681 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-09-20 18:48:37,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:37,682 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-09-20 18:48:37,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:37,683 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-09-20 18:48:37,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:37,684 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2024-09-20 18:48:37,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:37,684 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2024-09-20 18:48:37,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:37,685 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2024-09-20 18:48:37,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:37,686 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2024-09-20 18:48:37,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:37,687 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2024-09-20 18:48:37,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:37,687 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2024-09-20 18:48:37,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:37,688 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2024-09-20 18:48:37,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:37,689 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2024-09-20 18:48:37,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:37,690 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2024-09-20 18:48:37,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:37,691 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2024-09-20 18:48:37,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:37,691 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2024-09-20 18:48:37,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:37,692 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2024-09-20 18:48:37,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:37,693 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2024-09-20 18:48:37,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:37,694 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2024-09-20 18:48:37,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:37,694 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2024-09-20 18:48:37,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:37,695 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2024-09-20 18:48:37,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:37,696 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2024-09-20 18:48:37,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:37,697 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2024-09-20 18:48:37,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:37,698 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2024-09-20 18:48:37,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:37,698 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2024-09-20 18:48:37,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:37,699 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2024-09-20 18:48:37,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:37,700 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2024-09-20 18:48:37,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:37,701 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2024-09-20 18:48:37,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:37,701 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2024-09-20 18:48:37,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:37,702 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2024-09-20 18:48:37,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:37,703 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2024-09-20 18:48:37,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:37,704 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2024-09-20 18:48:37,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:37,705 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2024-09-20 18:48:37,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:37,705 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2024-09-20 18:48:37,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:37,706 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2024-09-20 18:48:37,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:37,707 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 323 [2024-09-20 18:48:37,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:37,708 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2024-09-20 18:48:37,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:37,709 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2024-09-20 18:48:37,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:37,710 INFO L134 CoverageAnalysis]: Checked inductivity of 7098 backedges. 2751 proven. 903 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-09-20 18:48:37,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:48:37,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629466957] [2024-09-20 18:48:37,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1629466957] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:48:37,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [291725754] [2024-09-20 18:48:37,710 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-20 18:48:37,711 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:48:37,711 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:48:37,712 INFO L229 MonitoredProcess]: Starting monitored process 85 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:48:37,713 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Waiting until timeout for monitored process [2024-09-20 18:48:37,858 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 43 check-sat command(s) [2024-09-20 18:48:37,858 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:48:37,861 INFO L262 TraceCheckSpWp]: Trace formula consists of 841 conjuncts, 88 conjuncts are in the unsatisfiable core [2024-09-20 18:48:37,864 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:48:38,021 INFO L134 CoverageAnalysis]: Checked inductivity of 7098 backedges. 2751 proven. 903 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-09-20 18:48:38,021 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:48:40,041 INFO L134 CoverageAnalysis]: Checked inductivity of 7098 backedges. 2751 proven. 903 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-09-20 18:48:40,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [291725754] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:48:40,042 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:48:40,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [89, 89, 89] total 90 [2024-09-20 18:48:40,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409777505] [2024-09-20 18:48:40,042 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:48:40,043 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 90 states [2024-09-20 18:48:40,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:48:40,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2024-09-20 18:48:40,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2026, Invalid=5984, Unknown=0, NotChecked=0, Total=8010 [2024-09-20 18:48:40,044 INFO L87 Difference]: Start difference. First operand 351 states and 352 transitions. Second operand has 90 states, 90 states have (on average 1.5444444444444445) internal successors, (139), 90 states have internal predecessors, (139), 44 states have call successors, (45), 2 states have call predecessors, (45), 1 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2024-09-20 18:48:40,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:48:40,624 INFO L93 Difference]: Finished difference Result 489 states and 533 transitions. [2024-09-20 18:48:40,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2024-09-20 18:48:40,624 INFO L78 Accepts]: Start accepts. Automaton has has 90 states, 90 states have (on average 1.5444444444444445) internal successors, (139), 90 states have internal predecessors, (139), 44 states have call successors, (45), 2 states have call predecessors, (45), 1 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) Word has length 348 [2024-09-20 18:48:40,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:48:40,627 INFO L225 Difference]: With dead ends: 489 [2024-09-20 18:48:40,627 INFO L226 Difference]: Without dead ends: 352 [2024-09-20 18:48:40,628 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 870 GetRequests, 696 SyntacticMatches, 86 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5835 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=2026, Invalid=5984, Unknown=0, NotChecked=0, Total=8010 [2024-09-20 18:48:40,632 INFO L434 NwaCegarLoop]: 93 mSDtfsCounter, 0 mSDsluCounter, 614 mSDsCounter, 0 mSdLazyCounter, 922 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 707 SdHoareTripleChecker+Invalid, 922 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 922 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-20 18:48:40,632 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 707 Invalid, 922 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 922 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-20 18:48:40,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2024-09-20 18:48:40,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 352. [2024-09-20 18:48:40,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 352 states, 262 states have (on average 1.0076335877862594) internal successors, (264), 263 states have internal predecessors, (264), 45 states have call successors, (45), 45 states have call predecessors, (45), 44 states have return successors, (44), 43 states have call predecessors, (44), 44 states have call successors, (44) [2024-09-20 18:48:40,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 353 transitions. [2024-09-20 18:48:40,671 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 353 transitions. Word has length 348 [2024-09-20 18:48:40,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:48:40,672 INFO L474 AbstractCegarLoop]: Abstraction has 352 states and 353 transitions. [2024-09-20 18:48:40,672 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 90 states, 90 states have (on average 1.5444444444444445) internal successors, (139), 90 states have internal predecessors, (139), 44 states have call successors, (45), 2 states have call predecessors, (45), 1 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2024-09-20 18:48:40,672 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:48:40,672 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 353 transitions. [2024-09-20 18:48:40,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 350 [2024-09-20 18:48:40,674 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:48:40,674 INFO L216 NwaCegarLoop]: trace histogram [43, 43, 43, 43, 42, 42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:48:40,693 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Forceful destruction successful, exit code 0 [2024-09-20 18:48:40,875 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85,85 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:48:40,875 INFO L399 AbstractCegarLoop]: === Iteration 87 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:48:40,875 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:48:40,875 INFO L85 PathProgramCache]: Analyzing trace with hash -2110185769, now seen corresponding path program 84 times [2024-09-20 18:48:40,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:48:40,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8585438] [2024-09-20 18:48:40,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:48:40,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:48:40,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:42,391 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:48:42,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:42,392 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-20 18:48:42,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:42,393 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-09-20 18:48:42,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:42,394 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-09-20 18:48:42,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:42,394 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-09-20 18:48:42,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:42,395 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-09-20 18:48:42,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:42,396 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-09-20 18:48:42,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:42,397 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-09-20 18:48:42,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:42,398 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2024-09-20 18:48:42,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:42,398 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-09-20 18:48:42,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:42,399 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2024-09-20 18:48:42,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:42,400 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-09-20 18:48:42,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:42,401 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2024-09-20 18:48:42,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:42,401 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2024-09-20 18:48:42,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:42,402 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2024-09-20 18:48:42,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:42,403 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-09-20 18:48:42,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:42,404 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2024-09-20 18:48:42,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:42,404 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2024-09-20 18:48:42,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:42,405 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2024-09-20 18:48:42,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:42,406 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2024-09-20 18:48:42,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:42,407 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2024-09-20 18:48:42,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:42,408 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2024-09-20 18:48:42,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:42,408 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2024-09-20 18:48:42,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:42,409 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2024-09-20 18:48:42,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:42,410 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2024-09-20 18:48:42,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:42,411 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2024-09-20 18:48:42,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:42,412 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2024-09-20 18:48:42,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:42,412 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2024-09-20 18:48:42,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:42,413 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2024-09-20 18:48:42,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:42,414 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2024-09-20 18:48:42,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:42,415 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2024-09-20 18:48:42,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:42,416 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2024-09-20 18:48:42,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:42,417 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2024-09-20 18:48:42,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:42,419 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2024-09-20 18:48:42,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:42,420 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2024-09-20 18:48:42,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:42,421 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2024-09-20 18:48:42,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:42,421 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2024-09-20 18:48:42,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:42,422 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2024-09-20 18:48:42,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:42,423 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2024-09-20 18:48:42,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:42,424 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2024-09-20 18:48:42,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:42,425 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2024-09-20 18:48:42,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:42,425 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2024-09-20 18:48:42,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:42,426 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2024-09-20 18:48:42,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:42,428 INFO L134 CoverageAnalysis]: Checked inductivity of 7141 backedges. 987 proven. 2710 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-09-20 18:48:42,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:48:42,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8585438] [2024-09-20 18:48:42,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8585438] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:48:42,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [413632173] [2024-09-20 18:48:42,428 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-20 18:48:42,428 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:48:42,428 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:48:42,429 INFO L229 MonitoredProcess]: Starting monitored process 86 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:48:42,430 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Waiting until timeout for monitored process [2024-09-20 18:48:42,582 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 43 check-sat command(s) [2024-09-20 18:48:42,582 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:48:42,585 INFO L262 TraceCheckSpWp]: Trace formula consists of 846 conjuncts, 92 conjuncts are in the unsatisfiable core [2024-09-20 18:48:42,588 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:48:42,769 INFO L134 CoverageAnalysis]: Checked inductivity of 7141 backedges. 1030 proven. 2667 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-09-20 18:48:42,769 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:48:44,233 INFO L134 CoverageAnalysis]: Checked inductivity of 7141 backedges. 1030 proven. 2667 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-09-20 18:48:44,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [413632173] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:48:44,233 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:48:44,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48, 48] total 51 [2024-09-20 18:48:44,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954139247] [2024-09-20 18:48:44,234 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:48:44,234 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2024-09-20 18:48:44,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:48:44,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2024-09-20 18:48:44,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1048, Invalid=1502, Unknown=0, NotChecked=0, Total=2550 [2024-09-20 18:48:44,235 INFO L87 Difference]: Start difference. First operand 352 states and 353 transitions. Second operand has 51 states, 51 states have (on average 2.784313725490196) internal successors, (142), 49 states have internal predecessors, (142), 44 states have call successors, (46), 3 states have call predecessors, (46), 1 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2024-09-20 18:48:44,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:48:44,487 INFO L93 Difference]: Finished difference Result 365 states and 367 transitions. [2024-09-20 18:48:44,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2024-09-20 18:48:44,488 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 2.784313725490196) internal successors, (142), 49 states have internal predecessors, (142), 44 states have call successors, (46), 3 states have call predecessors, (46), 1 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) Word has length 349 [2024-09-20 18:48:44,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:48:44,490 INFO L225 Difference]: With dead ends: 365 [2024-09-20 18:48:44,490 INFO L226 Difference]: Without dead ends: 363 [2024-09-20 18:48:44,490 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 874 GetRequests, 738 SyntacticMatches, 86 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2359 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1054, Invalid=1598, Unknown=0, NotChecked=0, Total=2652 [2024-09-20 18:48:44,490 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 509 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 509 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-20 18:48:44,490 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 132 Invalid, 510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 509 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-20 18:48:44,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2024-09-20 18:48:44,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 359. [2024-09-20 18:48:44,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 359 states, 267 states have (on average 1.0074906367041199) internal successors, (269), 268 states have internal predecessors, (269), 46 states have call successors, (46), 46 states have call predecessors, (46), 45 states have return successors, (45), 44 states have call predecessors, (45), 45 states have call successors, (45) [2024-09-20 18:48:44,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 360 transitions. [2024-09-20 18:48:44,517 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 360 transitions. Word has length 349 [2024-09-20 18:48:44,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:48:44,517 INFO L474 AbstractCegarLoop]: Abstraction has 359 states and 360 transitions. [2024-09-20 18:48:44,517 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 2.784313725490196) internal successors, (142), 49 states have internal predecessors, (142), 44 states have call successors, (46), 3 states have call predecessors, (46), 1 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2024-09-20 18:48:44,518 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:48:44,518 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 360 transitions. [2024-09-20 18:48:44,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2024-09-20 18:48:44,519 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:48:44,519 INFO L216 NwaCegarLoop]: trace histogram [44, 44, 44, 43, 43, 43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:48:44,534 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Ended with exit code 0 [2024-09-20 18:48:44,720 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86,86 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:48:44,720 INFO L399 AbstractCegarLoop]: === Iteration 88 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:48:44,720 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:48:44,720 INFO L85 PathProgramCache]: Analyzing trace with hash -2035289619, now seen corresponding path program 85 times [2024-09-20 18:48:44,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:48:44,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134911340] [2024-09-20 18:48:44,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:48:44,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:48:44,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:47,446 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:48:47,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:47,448 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-20 18:48:47,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:47,448 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-09-20 18:48:47,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:47,449 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-09-20 18:48:47,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:47,450 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-09-20 18:48:47,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:47,451 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-09-20 18:48:47,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:47,451 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-09-20 18:48:47,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:47,452 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-09-20 18:48:47,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:47,453 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2024-09-20 18:48:47,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:47,454 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-09-20 18:48:47,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:47,454 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2024-09-20 18:48:47,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:47,455 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-09-20 18:48:47,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:47,456 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2024-09-20 18:48:47,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:47,457 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2024-09-20 18:48:47,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:47,458 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2024-09-20 18:48:47,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:47,458 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-09-20 18:48:47,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:47,459 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2024-09-20 18:48:47,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:47,460 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2024-09-20 18:48:47,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:47,461 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2024-09-20 18:48:47,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:47,461 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2024-09-20 18:48:47,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:47,462 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2024-09-20 18:48:47,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:47,463 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2024-09-20 18:48:47,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:47,464 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2024-09-20 18:48:47,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:47,465 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2024-09-20 18:48:47,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:47,465 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2024-09-20 18:48:47,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:47,466 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2024-09-20 18:48:47,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:47,467 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2024-09-20 18:48:47,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:47,468 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2024-09-20 18:48:47,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:47,468 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2024-09-20 18:48:47,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:47,469 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2024-09-20 18:48:47,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:47,470 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2024-09-20 18:48:47,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:47,471 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2024-09-20 18:48:47,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:47,472 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2024-09-20 18:48:47,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:47,472 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2024-09-20 18:48:47,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:47,473 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2024-09-20 18:48:47,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:47,474 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2024-09-20 18:48:47,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:47,475 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2024-09-20 18:48:47,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:47,476 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2024-09-20 18:48:47,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:47,477 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2024-09-20 18:48:47,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:47,477 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2024-09-20 18:48:47,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:47,478 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2024-09-20 18:48:47,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:47,479 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2024-09-20 18:48:47,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:47,480 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2024-09-20 18:48:47,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:47,481 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 345 [2024-09-20 18:48:47,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:47,482 INFO L134 CoverageAnalysis]: Checked inductivity of 7439 backedges. 2881 proven. 946 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2024-09-20 18:48:47,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:48:47,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134911340] [2024-09-20 18:48:47,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2134911340] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:48:47,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [111456446] [2024-09-20 18:48:47,482 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-20 18:48:47,483 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:48:47,483 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:48:47,484 INFO L229 MonitoredProcess]: Starting monitored process 87 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:48:47,485 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Waiting until timeout for monitored process [2024-09-20 18:48:47,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:47,602 INFO L262 TraceCheckSpWp]: Trace formula consists of 860 conjuncts, 90 conjuncts are in the unsatisfiable core [2024-09-20 18:48:47,605 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:48:47,775 INFO L134 CoverageAnalysis]: Checked inductivity of 7439 backedges. 2881 proven. 946 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2024-09-20 18:48:47,775 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:48:49,873 INFO L134 CoverageAnalysis]: Checked inductivity of 7439 backedges. 2881 proven. 946 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2024-09-20 18:48:49,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [111456446] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:48:49,874 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:48:49,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [91, 91, 91] total 92 [2024-09-20 18:48:49,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173765658] [2024-09-20 18:48:49,874 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:48:49,874 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 92 states [2024-09-20 18:48:49,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:48:49,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2024-09-20 18:48:49,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2117, Invalid=6255, Unknown=0, NotChecked=0, Total=8372 [2024-09-20 18:48:49,876 INFO L87 Difference]: Start difference. First operand 359 states and 360 transitions. Second operand has 92 states, 92 states have (on average 1.5434782608695652) internal successors, (142), 92 states have internal predecessors, (142), 45 states have call successors, (46), 2 states have call predecessors, (46), 1 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2024-09-20 18:48:50,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:48:50,424 INFO L93 Difference]: Finished difference Result 500 states and 545 transitions. [2024-09-20 18:48:50,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2024-09-20 18:48:50,425 INFO L78 Accepts]: Start accepts. Automaton has has 92 states, 92 states have (on average 1.5434782608695652) internal successors, (142), 92 states have internal predecessors, (142), 45 states have call successors, (46), 2 states have call predecessors, (46), 1 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) Word has length 356 [2024-09-20 18:48:50,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:48:50,428 INFO L225 Difference]: With dead ends: 500 [2024-09-20 18:48:50,428 INFO L226 Difference]: Without dead ends: 360 [2024-09-20 18:48:50,429 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 890 GetRequests, 712 SyntacticMatches, 88 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6103 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=2117, Invalid=6255, Unknown=0, NotChecked=0, Total=8372 [2024-09-20 18:48:50,429 INFO L434 NwaCegarLoop]: 95 mSDtfsCounter, 0 mSDsluCounter, 867 mSDsCounter, 0 mSdLazyCounter, 1118 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 962 SdHoareTripleChecker+Invalid, 1118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-20 18:48:50,429 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 962 Invalid, 1118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1118 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-20 18:48:50,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2024-09-20 18:48:50,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 360. [2024-09-20 18:48:50,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 360 states, 268 states have (on average 1.007462686567164) internal successors, (270), 269 states have internal predecessors, (270), 46 states have call successors, (46), 46 states have call predecessors, (46), 45 states have return successors, (45), 44 states have call predecessors, (45), 45 states have call successors, (45) [2024-09-20 18:48:50,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 361 transitions. [2024-09-20 18:48:50,476 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 361 transitions. Word has length 356 [2024-09-20 18:48:50,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:48:50,476 INFO L474 AbstractCegarLoop]: Abstraction has 360 states and 361 transitions. [2024-09-20 18:48:50,476 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 92 states, 92 states have (on average 1.5434782608695652) internal successors, (142), 92 states have internal predecessors, (142), 45 states have call successors, (46), 2 states have call predecessors, (46), 1 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2024-09-20 18:48:50,476 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:48:50,476 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 361 transitions. [2024-09-20 18:48:50,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 358 [2024-09-20 18:48:50,478 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:48:50,478 INFO L216 NwaCegarLoop]: trace histogram [44, 44, 44, 44, 43, 43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:48:50,490 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Ended with exit code 0 [2024-09-20 18:48:50,678 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 87 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable87 [2024-09-20 18:48:50,678 INFO L399 AbstractCegarLoop]: === Iteration 89 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:48:50,679 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:48:50,679 INFO L85 PathProgramCache]: Analyzing trace with hash -150741383, now seen corresponding path program 86 times [2024-09-20 18:48:50,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:48:50,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577192116] [2024-09-20 18:48:50,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:48:50,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:48:50,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:52,247 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:48:52,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:52,248 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-09-20 18:48:52,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:52,249 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-20 18:48:52,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:52,250 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-09-20 18:48:52,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:52,251 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-09-20 18:48:52,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:52,251 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-09-20 18:48:52,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:52,252 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-20 18:48:52,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:52,253 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-09-20 18:48:52,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:52,254 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-09-20 18:48:52,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:52,255 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2024-09-20 18:48:52,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:52,256 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-09-20 18:48:52,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:52,257 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2024-09-20 18:48:52,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:52,258 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2024-09-20 18:48:52,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:52,259 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2024-09-20 18:48:52,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:52,260 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2024-09-20 18:48:52,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:52,261 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2024-09-20 18:48:52,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:52,262 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-09-20 18:48:52,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:52,264 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2024-09-20 18:48:52,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:52,265 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2024-09-20 18:48:52,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:52,266 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2024-09-20 18:48:52,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:52,267 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2024-09-20 18:48:52,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:52,268 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2024-09-20 18:48:52,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:52,269 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2024-09-20 18:48:52,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:52,271 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2024-09-20 18:48:52,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:52,272 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2024-09-20 18:48:52,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:52,273 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2024-09-20 18:48:52,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:52,274 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2024-09-20 18:48:52,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:52,275 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2024-09-20 18:48:52,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:52,276 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2024-09-20 18:48:52,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:52,278 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2024-09-20 18:48:52,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:52,279 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2024-09-20 18:48:52,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:52,280 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2024-09-20 18:48:52,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:52,281 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2024-09-20 18:48:52,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:52,282 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2024-09-20 18:48:52,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:52,283 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2024-09-20 18:48:52,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:52,284 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2024-09-20 18:48:52,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:52,286 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2024-09-20 18:48:52,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:52,287 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2024-09-20 18:48:52,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:52,288 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2024-09-20 18:48:52,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:52,289 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2024-09-20 18:48:52,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:52,290 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2024-09-20 18:48:52,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:52,291 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2024-09-20 18:48:52,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:52,293 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2024-09-20 18:48:52,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:52,294 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2024-09-20 18:48:52,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:52,296 INFO L134 CoverageAnalysis]: Checked inductivity of 7483 backedges. 1032 proven. 2839 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2024-09-20 18:48:52,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:48:52,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577192116] [2024-09-20 18:48:52,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577192116] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:48:52,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2089298682] [2024-09-20 18:48:52,296 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-20 18:48:52,296 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:48:52,296 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:48:52,297 INFO L229 MonitoredProcess]: Starting monitored process 88 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:48:52,298 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Waiting until timeout for monitored process [2024-09-20 18:48:52,413 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-20 18:48:52,414 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:48:52,416 INFO L262 TraceCheckSpWp]: Trace formula consists of 865 conjuncts, 91 conjuncts are in the unsatisfiable core [2024-09-20 18:48:52,420 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:48:52,603 INFO L134 CoverageAnalysis]: Checked inductivity of 7483 backedges. 1076 proven. 2795 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2024-09-20 18:48:52,603 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:48:54,142 INFO L134 CoverageAnalysis]: Checked inductivity of 7483 backedges. 1076 proven. 2795 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2024-09-20 18:48:54,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2089298682] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:48:54,142 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:48:54,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49, 49] total 52 [2024-09-20 18:48:54,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113780121] [2024-09-20 18:48:54,142 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:48:54,143 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2024-09-20 18:48:54,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:48:54,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2024-09-20 18:48:54,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1094, Invalid=1558, Unknown=0, NotChecked=0, Total=2652 [2024-09-20 18:48:54,144 INFO L87 Difference]: Start difference. First operand 360 states and 361 transitions. Second operand has 52 states, 52 states have (on average 2.7884615384615383) internal successors, (145), 50 states have internal predecessors, (145), 45 states have call successors, (47), 3 states have call predecessors, (47), 1 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2024-09-20 18:48:54,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:48:54,377 INFO L93 Difference]: Finished difference Result 373 states and 375 transitions. [2024-09-20 18:48:54,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2024-09-20 18:48:54,378 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 2.7884615384615383) internal successors, (145), 50 states have internal predecessors, (145), 45 states have call successors, (47), 3 states have call predecessors, (47), 1 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) Word has length 357 [2024-09-20 18:48:54,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:48:54,380 INFO L225 Difference]: With dead ends: 373 [2024-09-20 18:48:54,380 INFO L226 Difference]: Without dead ends: 371 [2024-09-20 18:48:54,380 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 894 GetRequests, 753 SyntacticMatches, 90 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2548 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1100, Invalid=1656, Unknown=0, NotChecked=0, Total=2756 [2024-09-20 18:48:54,380 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 425 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 425 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-20 18:48:54,380 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 102 Invalid, 427 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 425 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-20 18:48:54,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2024-09-20 18:48:54,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 367. [2024-09-20 18:48:54,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 367 states, 273 states have (on average 1.0073260073260073) internal successors, (275), 274 states have internal predecessors, (275), 47 states have call successors, (47), 47 states have call predecessors, (47), 46 states have return successors, (46), 45 states have call predecessors, (46), 46 states have call successors, (46) [2024-09-20 18:48:54,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 368 transitions. [2024-09-20 18:48:54,406 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 368 transitions. Word has length 357 [2024-09-20 18:48:54,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:48:54,406 INFO L474 AbstractCegarLoop]: Abstraction has 367 states and 368 transitions. [2024-09-20 18:48:54,406 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 2.7884615384615383) internal successors, (145), 50 states have internal predecessors, (145), 45 states have call successors, (47), 3 states have call predecessors, (47), 1 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2024-09-20 18:48:54,406 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:48:54,407 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 368 transitions. [2024-09-20 18:48:54,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2024-09-20 18:48:54,408 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:48:54,408 INFO L216 NwaCegarLoop]: trace histogram [45, 45, 45, 44, 44, 44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:48:54,420 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Ended with exit code 0 [2024-09-20 18:48:54,608 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 88 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable88 [2024-09-20 18:48:54,608 INFO L399 AbstractCegarLoop]: === Iteration 90 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:48:54,608 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:48:54,608 INFO L85 PathProgramCache]: Analyzing trace with hash -1214334965, now seen corresponding path program 87 times [2024-09-20 18:48:54,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:48:54,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019708719] [2024-09-20 18:48:54,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:48:54,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:48:54,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:57,442 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:48:57,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:57,443 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-09-20 18:48:57,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:57,444 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-20 18:48:57,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:57,445 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-09-20 18:48:57,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:57,445 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-09-20 18:48:57,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:57,446 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-09-20 18:48:57,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:57,447 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-20 18:48:57,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:57,448 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-09-20 18:48:57,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:57,448 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-09-20 18:48:57,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:57,449 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2024-09-20 18:48:57,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:57,450 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-09-20 18:48:57,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:57,451 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2024-09-20 18:48:57,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:57,451 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2024-09-20 18:48:57,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:57,452 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2024-09-20 18:48:57,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:57,453 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2024-09-20 18:48:57,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:57,454 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2024-09-20 18:48:57,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:57,454 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-09-20 18:48:57,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:57,455 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2024-09-20 18:48:57,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:57,456 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2024-09-20 18:48:57,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:57,457 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2024-09-20 18:48:57,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:57,458 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2024-09-20 18:48:57,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:57,458 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2024-09-20 18:48:57,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:57,459 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2024-09-20 18:48:57,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:57,460 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2024-09-20 18:48:57,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:57,461 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2024-09-20 18:48:57,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:57,461 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2024-09-20 18:48:57,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:57,462 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2024-09-20 18:48:57,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:57,463 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2024-09-20 18:48:57,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:57,464 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2024-09-20 18:48:57,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:57,465 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2024-09-20 18:48:57,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:57,465 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2024-09-20 18:48:57,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:57,466 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2024-09-20 18:48:57,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:57,467 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2024-09-20 18:48:57,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:57,468 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2024-09-20 18:48:57,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:57,469 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2024-09-20 18:48:57,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:57,469 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2024-09-20 18:48:57,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:57,470 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2024-09-20 18:48:57,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:57,471 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2024-09-20 18:48:57,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:57,472 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2024-09-20 18:48:57,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:57,473 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2024-09-20 18:48:57,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:57,473 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2024-09-20 18:48:57,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:57,474 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2024-09-20 18:48:57,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:57,475 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2024-09-20 18:48:57,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:57,476 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2024-09-20 18:48:57,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:57,477 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2024-09-20 18:48:57,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:57,478 INFO L134 CoverageAnalysis]: Checked inductivity of 7788 backedges. 3014 proven. 990 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2024-09-20 18:48:57,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:48:57,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019708719] [2024-09-20 18:48:57,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019708719] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:48:57,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [196598648] [2024-09-20 18:48:57,478 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-20 18:48:57,478 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:48:57,479 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:48:57,480 INFO L229 MonitoredProcess]: Starting monitored process 89 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:48:57,480 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Waiting until timeout for monitored process [2024-09-20 18:48:57,643 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 45 check-sat command(s) [2024-09-20 18:48:57,643 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:48:57,646 INFO L262 TraceCheckSpWp]: Trace formula consists of 879 conjuncts, 92 conjuncts are in the unsatisfiable core [2024-09-20 18:48:57,649 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:48:57,809 INFO L134 CoverageAnalysis]: Checked inductivity of 7788 backedges. 3014 proven. 990 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2024-09-20 18:48:57,809 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:48:59,974 INFO L134 CoverageAnalysis]: Checked inductivity of 7788 backedges. 3014 proven. 990 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2024-09-20 18:48:59,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [196598648] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:48:59,974 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:48:59,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [93, 93, 93] total 94 [2024-09-20 18:48:59,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507654085] [2024-09-20 18:48:59,975 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:48:59,975 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 94 states [2024-09-20 18:48:59,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:48:59,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2024-09-20 18:48:59,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2210, Invalid=6532, Unknown=0, NotChecked=0, Total=8742 [2024-09-20 18:48:59,976 INFO L87 Difference]: Start difference. First operand 367 states and 368 transitions. Second operand has 94 states, 94 states have (on average 1.5425531914893618) internal successors, (145), 94 states have internal predecessors, (145), 46 states have call successors, (47), 2 states have call predecessors, (47), 1 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2024-09-20 18:49:00,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:49:00,439 INFO L93 Difference]: Finished difference Result 511 states and 557 transitions. [2024-09-20 18:49:00,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2024-09-20 18:49:00,439 INFO L78 Accepts]: Start accepts. Automaton has has 94 states, 94 states have (on average 1.5425531914893618) internal successors, (145), 94 states have internal predecessors, (145), 46 states have call successors, (47), 2 states have call predecessors, (47), 1 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) Word has length 364 [2024-09-20 18:49:00,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:49:00,441 INFO L225 Difference]: With dead ends: 511 [2024-09-20 18:49:00,442 INFO L226 Difference]: Without dead ends: 368 [2024-09-20 18:49:00,442 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 910 GetRequests, 728 SyntacticMatches, 90 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6377 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=2210, Invalid=6532, Unknown=0, NotChecked=0, Total=8742 [2024-09-20 18:49:00,442 INFO L434 NwaCegarLoop]: 97 mSDtfsCounter, 0 mSDsluCounter, 501 mSDsCounter, 0 mSdLazyCounter, 927 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 598 SdHoareTripleChecker+Invalid, 927 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 927 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-20 18:49:00,443 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 598 Invalid, 927 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 927 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-20 18:49:00,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368 states. [2024-09-20 18:49:00,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368 to 368. [2024-09-20 18:49:00,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 368 states, 274 states have (on average 1.0072992700729928) internal successors, (276), 275 states have internal predecessors, (276), 47 states have call successors, (47), 47 states have call predecessors, (47), 46 states have return successors, (46), 45 states have call predecessors, (46), 46 states have call successors, (46) [2024-09-20 18:49:00,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 369 transitions. [2024-09-20 18:49:00,469 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 369 transitions. Word has length 364 [2024-09-20 18:49:00,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:49:00,469 INFO L474 AbstractCegarLoop]: Abstraction has 368 states and 369 transitions. [2024-09-20 18:49:00,469 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 94 states, 94 states have (on average 1.5425531914893618) internal successors, (145), 94 states have internal predecessors, (145), 46 states have call successors, (47), 2 states have call predecessors, (47), 1 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2024-09-20 18:49:00,469 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:49:00,469 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 369 transitions. [2024-09-20 18:49:00,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 366 [2024-09-20 18:49:00,470 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:49:00,470 INFO L216 NwaCegarLoop]: trace histogram [45, 45, 45, 45, 44, 44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:49:00,483 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Ended with exit code 0 [2024-09-20 18:49:00,671 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89,89 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:49:00,671 INFO L399 AbstractCegarLoop]: === Iteration 91 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:49:00,671 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:49:00,671 INFO L85 PathProgramCache]: Analyzing trace with hash 1353930903, now seen corresponding path program 88 times [2024-09-20 18:49:00,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:49:00,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469787415] [2024-09-20 18:49:00,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:49:00,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:49:00,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:02,309 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:49:02,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:02,310 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-20 18:49:02,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:02,311 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-09-20 18:49:02,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:02,312 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-20 18:49:02,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:02,313 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-09-20 18:49:02,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:02,313 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-09-20 18:49:02,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:02,314 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-09-20 18:49:02,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:02,315 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-20 18:49:02,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:02,316 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-09-20 18:49:02,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:02,316 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-09-20 18:49:02,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:02,317 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2024-09-20 18:49:02,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:02,318 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-09-20 18:49:02,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:02,319 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2024-09-20 18:49:02,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:02,320 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2024-09-20 18:49:02,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:02,320 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2024-09-20 18:49:02,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:02,321 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2024-09-20 18:49:02,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:02,322 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2024-09-20 18:49:02,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:02,323 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2024-09-20 18:49:02,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:02,324 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2024-09-20 18:49:02,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:02,324 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2024-09-20 18:49:02,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:02,325 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2024-09-20 18:49:02,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:02,326 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2024-09-20 18:49:02,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:02,327 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2024-09-20 18:49:02,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:02,327 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2024-09-20 18:49:02,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:02,328 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2024-09-20 18:49:02,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:02,329 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2024-09-20 18:49:02,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:02,330 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2024-09-20 18:49:02,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:02,331 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2024-09-20 18:49:02,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:02,332 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2024-09-20 18:49:02,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:02,332 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2024-09-20 18:49:02,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:02,333 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2024-09-20 18:49:02,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:02,334 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2024-09-20 18:49:02,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:02,335 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2024-09-20 18:49:02,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:02,336 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2024-09-20 18:49:02,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:02,336 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2024-09-20 18:49:02,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:02,337 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2024-09-20 18:49:02,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:02,347 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2024-09-20 18:49:02,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:02,348 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2024-09-20 18:49:02,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:02,350 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2024-09-20 18:49:02,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:02,352 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2024-09-20 18:49:02,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:02,353 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2024-09-20 18:49:02,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:02,354 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2024-09-20 18:49:02,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:02,355 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2024-09-20 18:49:02,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:02,356 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2024-09-20 18:49:02,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:02,357 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 354 [2024-09-20 18:49:02,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:02,359 INFO L134 CoverageAnalysis]: Checked inductivity of 7833 backedges. 1078 proven. 2971 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2024-09-20 18:49:02,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:49:02,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469787415] [2024-09-20 18:49:02,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469787415] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:49:02,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1506534731] [2024-09-20 18:49:02,360 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-20 18:49:02,360 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:49:02,360 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:49:02,362 INFO L229 MonitoredProcess]: Starting monitored process 90 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:49:02,363 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Waiting until timeout for monitored process [2024-09-20 18:49:02,486 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-20 18:49:02,486 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:49:02,490 INFO L262 TraceCheckSpWp]: Trace formula consists of 884 conjuncts, 96 conjuncts are in the unsatisfiable core [2024-09-20 18:49:02,493 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:49:02,679 INFO L134 CoverageAnalysis]: Checked inductivity of 7833 backedges. 1123 proven. 2926 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2024-09-20 18:49:02,680 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:49:04,244 INFO L134 CoverageAnalysis]: Checked inductivity of 7833 backedges. 1123 proven. 2926 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2024-09-20 18:49:04,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1506534731] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:49:04,245 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:49:04,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50, 50] total 53 [2024-09-20 18:49:04,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937634984] [2024-09-20 18:49:04,245 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:49:04,245 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2024-09-20 18:49:04,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:49:04,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2024-09-20 18:49:04,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1141, Invalid=1615, Unknown=0, NotChecked=0, Total=2756 [2024-09-20 18:49:04,246 INFO L87 Difference]: Start difference. First operand 368 states and 369 transitions. Second operand has 53 states, 53 states have (on average 2.792452830188679) internal successors, (148), 51 states have internal predecessors, (148), 46 states have call successors, (48), 3 states have call predecessors, (48), 1 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2024-09-20 18:49:04,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:49:04,507 INFO L93 Difference]: Finished difference Result 381 states and 383 transitions. [2024-09-20 18:49:04,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2024-09-20 18:49:04,507 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 2.792452830188679) internal successors, (148), 51 states have internal predecessors, (148), 46 states have call successors, (48), 3 states have call predecessors, (48), 1 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) Word has length 365 [2024-09-20 18:49:04,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:49:04,509 INFO L225 Difference]: With dead ends: 381 [2024-09-20 18:49:04,510 INFO L226 Difference]: Without dead ends: 379 [2024-09-20 18:49:04,510 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 914 GetRequests, 772 SyntacticMatches, 90 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2559 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1147, Invalid=1715, Unknown=0, NotChecked=0, Total=2862 [2024-09-20 18:49:04,510 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 500 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 502 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 500 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-20 18:49:04,510 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 120 Invalid, 502 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 500 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-20 18:49:04,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2024-09-20 18:49:04,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 375. [2024-09-20 18:49:04,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 279 states have (on average 1.007168458781362) internal successors, (281), 280 states have internal predecessors, (281), 48 states have call successors, (48), 48 states have call predecessors, (48), 47 states have return successors, (47), 46 states have call predecessors, (47), 47 states have call successors, (47) [2024-09-20 18:49:04,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 376 transitions. [2024-09-20 18:49:04,542 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 376 transitions. Word has length 365 [2024-09-20 18:49:04,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:49:04,542 INFO L474 AbstractCegarLoop]: Abstraction has 375 states and 376 transitions. [2024-09-20 18:49:04,542 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 2.792452830188679) internal successors, (148), 51 states have internal predecessors, (148), 46 states have call successors, (48), 3 states have call predecessors, (48), 1 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2024-09-20 18:49:04,542 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:49:04,542 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 376 transitions. [2024-09-20 18:49:04,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 373 [2024-09-20 18:49:04,543 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:49:04,544 INFO L216 NwaCegarLoop]: trace histogram [46, 46, 46, 45, 45, 45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:49:04,556 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Ended with exit code 0 [2024-09-20 18:49:04,744 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90,90 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:49:04,744 INFO L399 AbstractCegarLoop]: === Iteration 92 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:49:04,744 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:49:04,744 INFO L85 PathProgramCache]: Analyzing trace with hash 1725251629, now seen corresponding path program 89 times [2024-09-20 18:49:04,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:49:04,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077999427] [2024-09-20 18:49:04,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:49:04,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:49:04,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:07,725 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:49:07,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:07,726 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-20 18:49:07,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:07,727 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-09-20 18:49:07,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:07,727 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-20 18:49:07,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:07,728 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-09-20 18:49:07,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:07,729 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-09-20 18:49:07,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:07,730 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-09-20 18:49:07,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:07,730 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-20 18:49:07,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:07,731 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-09-20 18:49:07,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:07,732 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-09-20 18:49:07,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:07,733 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2024-09-20 18:49:07,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:07,734 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-09-20 18:49:07,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:07,734 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2024-09-20 18:49:07,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:07,735 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2024-09-20 18:49:07,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:07,736 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2024-09-20 18:49:07,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:07,737 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2024-09-20 18:49:07,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:07,738 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2024-09-20 18:49:07,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:07,739 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2024-09-20 18:49:07,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:07,739 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2024-09-20 18:49:07,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:07,740 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2024-09-20 18:49:07,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:07,741 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2024-09-20 18:49:07,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:07,742 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2024-09-20 18:49:07,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:07,742 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2024-09-20 18:49:07,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:07,743 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2024-09-20 18:49:07,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:07,744 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2024-09-20 18:49:07,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:07,745 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2024-09-20 18:49:07,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:07,746 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2024-09-20 18:49:07,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:07,746 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2024-09-20 18:49:07,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:07,747 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2024-09-20 18:49:07,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:07,748 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2024-09-20 18:49:07,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:07,749 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2024-09-20 18:49:07,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:07,750 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2024-09-20 18:49:07,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:07,750 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2024-09-20 18:49:07,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:07,751 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2024-09-20 18:49:07,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:07,752 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2024-09-20 18:49:07,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:07,753 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2024-09-20 18:49:07,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:07,754 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2024-09-20 18:49:07,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:07,754 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2024-09-20 18:49:07,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:07,755 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2024-09-20 18:49:07,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:07,756 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2024-09-20 18:49:07,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:07,757 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2024-09-20 18:49:07,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:07,758 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2024-09-20 18:49:07,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:07,758 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2024-09-20 18:49:07,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:07,759 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2024-09-20 18:49:07,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:07,760 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 354 [2024-09-20 18:49:07,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:07,761 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 361 [2024-09-20 18:49:07,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:07,763 INFO L134 CoverageAnalysis]: Checked inductivity of 8145 backedges. 3150 proven. 1035 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2024-09-20 18:49:07,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:49:07,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077999427] [2024-09-20 18:49:07,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077999427] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:49:07,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1615480292] [2024-09-20 18:49:07,763 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-20 18:49:07,763 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:49:07,763 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:49:07,765 INFO L229 MonitoredProcess]: Starting monitored process 91 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:49:07,766 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Waiting until timeout for monitored process [2024-09-20 18:49:07,922 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 46 check-sat command(s) [2024-09-20 18:49:07,923 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:49:07,927 INFO L262 TraceCheckSpWp]: Trace formula consists of 898 conjuncts, 94 conjuncts are in the unsatisfiable core [2024-09-20 18:49:07,931 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:49:08,097 INFO L134 CoverageAnalysis]: Checked inductivity of 8145 backedges. 3150 proven. 1035 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2024-09-20 18:49:08,097 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:49:10,379 INFO L134 CoverageAnalysis]: Checked inductivity of 8145 backedges. 3150 proven. 1035 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2024-09-20 18:49:10,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1615480292] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:49:10,379 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:49:10,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [95, 95, 95] total 96 [2024-09-20 18:49:10,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619463039] [2024-09-20 18:49:10,379 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:49:10,380 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2024-09-20 18:49:10,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:49:10,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2024-09-20 18:49:10,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2305, Invalid=6815, Unknown=0, NotChecked=0, Total=9120 [2024-09-20 18:49:10,381 INFO L87 Difference]: Start difference. First operand 375 states and 376 transitions. Second operand has 96 states, 96 states have (on average 1.5416666666666667) internal successors, (148), 96 states have internal predecessors, (148), 47 states have call successors, (48), 2 states have call predecessors, (48), 1 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2024-09-20 18:49:11,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:49:11,075 INFO L93 Difference]: Finished difference Result 522 states and 569 transitions. [2024-09-20 18:49:11,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2024-09-20 18:49:11,076 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 96 states have (on average 1.5416666666666667) internal successors, (148), 96 states have internal predecessors, (148), 47 states have call successors, (48), 2 states have call predecessors, (48), 1 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) Word has length 372 [2024-09-20 18:49:11,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:49:11,079 INFO L225 Difference]: With dead ends: 522 [2024-09-20 18:49:11,079 INFO L226 Difference]: Without dead ends: 376 [2024-09-20 18:49:11,080 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 930 GetRequests, 744 SyntacticMatches, 92 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6657 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=2305, Invalid=6815, Unknown=0, NotChecked=0, Total=9120 [2024-09-20 18:49:11,080 INFO L434 NwaCegarLoop]: 99 mSDtfsCounter, 0 mSDsluCounter, 1197 mSDsCounter, 0 mSdLazyCounter, 1577 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1296 SdHoareTripleChecker+Invalid, 1577 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1577 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-09-20 18:49:11,081 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1296 Invalid, 1577 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1577 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-09-20 18:49:11,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2024-09-20 18:49:11,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 376. [2024-09-20 18:49:11,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 376 states, 280 states have (on average 1.0071428571428571) internal successors, (282), 281 states have internal predecessors, (282), 48 states have call successors, (48), 48 states have call predecessors, (48), 47 states have return successors, (47), 46 states have call predecessors, (47), 47 states have call successors, (47) [2024-09-20 18:49:11,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 377 transitions. [2024-09-20 18:49:11,120 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 377 transitions. Word has length 372 [2024-09-20 18:49:11,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:49:11,120 INFO L474 AbstractCegarLoop]: Abstraction has 376 states and 377 transitions. [2024-09-20 18:49:11,120 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 96 states have (on average 1.5416666666666667) internal successors, (148), 96 states have internal predecessors, (148), 47 states have call successors, (48), 2 states have call predecessors, (48), 1 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2024-09-20 18:49:11,120 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:49:11,120 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 377 transitions. [2024-09-20 18:49:11,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 374 [2024-09-20 18:49:11,121 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:49:11,122 INFO L216 NwaCegarLoop]: trace histogram [46, 46, 46, 46, 45, 45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:49:11,134 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Forceful destruction successful, exit code 0 [2024-09-20 18:49:11,322 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91,91 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:49:11,322 INFO L399 AbstractCegarLoop]: === Iteration 93 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:49:11,322 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:49:11,322 INFO L85 PathProgramCache]: Analyzing trace with hash -2034854727, now seen corresponding path program 90 times [2024-09-20 18:49:11,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:49:11,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717037478] [2024-09-20 18:49:11,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:49:11,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:49:11,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:13,056 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:49:13,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:13,057 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-09-20 18:49:13,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:13,058 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-09-20 18:49:13,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:13,059 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-20 18:49:13,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:13,060 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-20 18:49:13,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:13,060 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-09-20 18:49:13,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:13,061 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-09-20 18:49:13,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:13,062 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-09-20 18:49:13,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:13,063 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-09-20 18:49:13,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:13,064 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2024-09-20 18:49:13,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:13,064 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-09-20 18:49:13,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:13,065 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2024-09-20 18:49:13,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:13,066 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-09-20 18:49:13,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:13,067 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2024-09-20 18:49:13,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:13,067 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2024-09-20 18:49:13,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:13,068 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2024-09-20 18:49:13,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:13,069 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2024-09-20 18:49:13,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:13,070 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2024-09-20 18:49:13,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:13,071 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2024-09-20 18:49:13,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:13,071 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2024-09-20 18:49:13,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:13,072 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2024-09-20 18:49:13,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:13,073 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2024-09-20 18:49:13,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:13,074 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2024-09-20 18:49:13,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:13,076 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2024-09-20 18:49:13,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:13,077 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2024-09-20 18:49:13,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:13,078 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2024-09-20 18:49:13,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:13,079 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2024-09-20 18:49:13,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:13,081 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2024-09-20 18:49:13,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:13,082 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2024-09-20 18:49:13,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:13,083 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2024-09-20 18:49:13,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:13,084 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2024-09-20 18:49:13,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:13,085 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2024-09-20 18:49:13,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:13,086 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2024-09-20 18:49:13,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:13,087 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2024-09-20 18:49:13,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:13,089 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2024-09-20 18:49:13,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:13,090 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2024-09-20 18:49:13,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:13,091 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2024-09-20 18:49:13,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:13,092 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2024-09-20 18:49:13,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:13,093 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2024-09-20 18:49:13,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:13,095 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2024-09-20 18:49:13,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:13,096 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2024-09-20 18:49:13,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:13,097 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2024-09-20 18:49:13,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:13,098 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2024-09-20 18:49:13,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:13,099 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2024-09-20 18:49:13,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:13,101 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2024-09-20 18:49:13,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:13,102 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2024-09-20 18:49:13,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:13,104 INFO L134 CoverageAnalysis]: Checked inductivity of 8191 backedges. 1125 proven. 3106 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2024-09-20 18:49:13,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:49:13,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717037478] [2024-09-20 18:49:13,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717037478] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:49:13,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1285620305] [2024-09-20 18:49:13,105 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-20 18:49:13,105 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:49:13,105 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:49:13,107 INFO L229 MonitoredProcess]: Starting monitored process 92 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:49:13,109 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Waiting until timeout for monitored process [2024-09-20 18:49:13,291 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 46 check-sat command(s) [2024-09-20 18:49:13,291 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:49:13,295 INFO L262 TraceCheckSpWp]: Trace formula consists of 903 conjuncts, 98 conjuncts are in the unsatisfiable core [2024-09-20 18:49:13,298 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:49:13,489 INFO L134 CoverageAnalysis]: Checked inductivity of 8191 backedges. 1171 proven. 3060 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2024-09-20 18:49:13,489 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:49:15,116 INFO L134 CoverageAnalysis]: Checked inductivity of 8191 backedges. 1171 proven. 3060 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2024-09-20 18:49:15,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1285620305] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:49:15,116 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:49:15,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51, 51] total 54 [2024-09-20 18:49:15,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843250857] [2024-09-20 18:49:15,117 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:49:15,117 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2024-09-20 18:49:15,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:49:15,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2024-09-20 18:49:15,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1189, Invalid=1673, Unknown=0, NotChecked=0, Total=2862 [2024-09-20 18:49:15,118 INFO L87 Difference]: Start difference. First operand 376 states and 377 transitions. Second operand has 54 states, 54 states have (on average 2.7962962962962963) internal successors, (151), 52 states have internal predecessors, (151), 47 states have call successors, (49), 3 states have call predecessors, (49), 1 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2024-09-20 18:49:15,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:49:15,390 INFO L93 Difference]: Finished difference Result 389 states and 391 transitions. [2024-09-20 18:49:15,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2024-09-20 18:49:15,390 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 2.7962962962962963) internal successors, (151), 52 states have internal predecessors, (151), 47 states have call successors, (49), 3 states have call predecessors, (49), 1 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) Word has length 373 [2024-09-20 18:49:15,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:49:15,392 INFO L225 Difference]: With dead ends: 389 [2024-09-20 18:49:15,392 INFO L226 Difference]: Without dead ends: 387 [2024-09-20 18:49:15,393 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 934 GetRequests, 789 SyntacticMatches, 92 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2662 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1195, Invalid=1775, Unknown=0, NotChecked=0, Total=2970 [2024-09-20 18:49:15,393 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 552 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 553 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 552 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-20 18:49:15,393 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 135 Invalid, 553 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 552 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-20 18:49:15,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2024-09-20 18:49:15,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 383. [2024-09-20 18:49:15,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 285 states have (on average 1.0070175438596491) internal successors, (287), 286 states have internal predecessors, (287), 49 states have call successors, (49), 49 states have call predecessors, (49), 48 states have return successors, (48), 47 states have call predecessors, (48), 48 states have call successors, (48) [2024-09-20 18:49:15,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 384 transitions. [2024-09-20 18:49:15,420 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 384 transitions. Word has length 373 [2024-09-20 18:49:15,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:49:15,420 INFO L474 AbstractCegarLoop]: Abstraction has 383 states and 384 transitions. [2024-09-20 18:49:15,421 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 2.7962962962962963) internal successors, (151), 52 states have internal predecessors, (151), 47 states have call successors, (49), 3 states have call predecessors, (49), 1 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2024-09-20 18:49:15,421 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:49:15,421 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 384 transitions. [2024-09-20 18:49:15,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 381 [2024-09-20 18:49:15,422 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:49:15,422 INFO L216 NwaCegarLoop]: trace histogram [47, 47, 47, 46, 46, 46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:49:15,434 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Ended with exit code 0 [2024-09-20 18:49:15,622 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92,92 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:49:15,622 INFO L399 AbstractCegarLoop]: === Iteration 94 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:49:15,623 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:49:15,623 INFO L85 PathProgramCache]: Analyzing trace with hash -1981908533, now seen corresponding path program 91 times [2024-09-20 18:49:15,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:49:15,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649460248] [2024-09-20 18:49:15,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:49:15,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:49:15,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:18,736 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:49:18,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:18,737 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-09-20 18:49:18,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:18,738 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-09-20 18:49:18,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:18,739 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-20 18:49:18,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:18,740 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-20 18:49:18,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:18,741 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-09-20 18:49:18,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:18,743 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-09-20 18:49:18,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:18,743 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-09-20 18:49:18,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:18,744 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-09-20 18:49:18,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:18,745 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2024-09-20 18:49:18,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:18,746 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-09-20 18:49:18,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:18,747 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2024-09-20 18:49:18,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:18,749 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-09-20 18:49:18,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:18,750 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2024-09-20 18:49:18,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:18,750 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2024-09-20 18:49:18,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:18,751 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2024-09-20 18:49:18,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:18,752 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2024-09-20 18:49:18,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:18,753 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2024-09-20 18:49:18,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:18,754 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2024-09-20 18:49:18,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:18,754 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2024-09-20 18:49:18,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:18,755 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2024-09-20 18:49:18,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:18,756 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2024-09-20 18:49:18,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:18,757 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2024-09-20 18:49:18,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:18,759 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2024-09-20 18:49:18,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:18,760 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2024-09-20 18:49:18,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:18,761 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2024-09-20 18:49:18,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:18,762 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2024-09-20 18:49:18,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:18,763 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2024-09-20 18:49:18,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:18,764 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2024-09-20 18:49:18,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:18,765 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2024-09-20 18:49:18,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:18,767 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2024-09-20 18:49:18,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:18,768 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2024-09-20 18:49:18,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:18,769 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2024-09-20 18:49:18,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:18,770 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2024-09-20 18:49:18,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:18,771 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2024-09-20 18:49:18,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:18,772 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2024-09-20 18:49:18,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:18,774 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2024-09-20 18:49:18,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:18,775 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2024-09-20 18:49:18,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:18,776 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2024-09-20 18:49:18,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:18,777 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2024-09-20 18:49:18,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:18,778 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2024-09-20 18:49:18,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:18,779 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2024-09-20 18:49:18,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:18,780 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2024-09-20 18:49:18,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:18,782 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2024-09-20 18:49:18,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:18,783 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2024-09-20 18:49:18,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:18,784 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2024-09-20 18:49:18,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:18,785 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 369 [2024-09-20 18:49:18,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:18,787 INFO L134 CoverageAnalysis]: Checked inductivity of 8510 backedges. 3289 proven. 1081 refuted. 0 times theorem prover too weak. 4140 trivial. 0 not checked. [2024-09-20 18:49:18,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:49:18,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649460248] [2024-09-20 18:49:18,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649460248] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:49:18,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [103208900] [2024-09-20 18:49:18,788 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-20 18:49:18,788 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:49:18,788 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:49:18,790 INFO L229 MonitoredProcess]: Starting monitored process 93 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:49:18,817 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Waiting until timeout for monitored process [2024-09-20 18:49:18,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:18,925 INFO L262 TraceCheckSpWp]: Trace formula consists of 917 conjuncts, 96 conjuncts are in the unsatisfiable core [2024-09-20 18:49:18,929 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:49:19,102 INFO L134 CoverageAnalysis]: Checked inductivity of 8510 backedges. 3289 proven. 1081 refuted. 0 times theorem prover too weak. 4140 trivial. 0 not checked. [2024-09-20 18:49:19,102 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:49:21,493 INFO L134 CoverageAnalysis]: Checked inductivity of 8510 backedges. 3289 proven. 1081 refuted. 0 times theorem prover too weak. 4140 trivial. 0 not checked. [2024-09-20 18:49:21,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [103208900] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:49:21,493 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:49:21,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [97, 97, 97] total 98 [2024-09-20 18:49:21,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688746199] [2024-09-20 18:49:21,493 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:49:21,494 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 98 states [2024-09-20 18:49:21,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:49:21,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2024-09-20 18:49:21,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2402, Invalid=7104, Unknown=0, NotChecked=0, Total=9506 [2024-09-20 18:49:21,495 INFO L87 Difference]: Start difference. First operand 383 states and 384 transitions. Second operand has 98 states, 98 states have (on average 1.5408163265306123) internal successors, (151), 98 states have internal predecessors, (151), 48 states have call successors, (49), 2 states have call predecessors, (49), 1 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2024-09-20 18:49:21,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:49:21,998 INFO L93 Difference]: Finished difference Result 533 states and 581 transitions. [2024-09-20 18:49:21,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2024-09-20 18:49:21,998 INFO L78 Accepts]: Start accepts. Automaton has has 98 states, 98 states have (on average 1.5408163265306123) internal successors, (151), 98 states have internal predecessors, (151), 48 states have call successors, (49), 2 states have call predecessors, (49), 1 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) Word has length 380 [2024-09-20 18:49:21,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:49:22,000 INFO L225 Difference]: With dead ends: 533 [2024-09-20 18:49:22,000 INFO L226 Difference]: Without dead ends: 384 [2024-09-20 18:49:22,001 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 950 GetRequests, 760 SyntacticMatches, 94 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6943 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=2402, Invalid=7104, Unknown=0, NotChecked=0, Total=9506 [2024-09-20 18:49:22,001 INFO L434 NwaCegarLoop]: 101 mSDtfsCounter, 0 mSDsluCounter, 676 mSDsCounter, 0 mSdLazyCounter, 1045 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 777 SdHoareTripleChecker+Invalid, 1045 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1045 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-20 18:49:22,001 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 777 Invalid, 1045 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1045 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-20 18:49:22,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2024-09-20 18:49:22,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 384. [2024-09-20 18:49:22,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 286 states have (on average 1.006993006993007) internal successors, (288), 287 states have internal predecessors, (288), 49 states have call successors, (49), 49 states have call predecessors, (49), 48 states have return successors, (48), 47 states have call predecessors, (48), 48 states have call successors, (48) [2024-09-20 18:49:22,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 385 transitions. [2024-09-20 18:49:22,029 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 385 transitions. Word has length 380 [2024-09-20 18:49:22,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:49:22,029 INFO L474 AbstractCegarLoop]: Abstraction has 384 states and 385 transitions. [2024-09-20 18:49:22,029 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 98 states, 98 states have (on average 1.5408163265306123) internal successors, (151), 98 states have internal predecessors, (151), 48 states have call successors, (49), 2 states have call predecessors, (49), 1 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2024-09-20 18:49:22,029 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:49:22,030 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 385 transitions. [2024-09-20 18:49:22,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 382 [2024-09-20 18:49:22,031 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:49:22,031 INFO L216 NwaCegarLoop]: trace histogram [47, 47, 47, 47, 46, 46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:49:22,043 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Ended with exit code 0 [2024-09-20 18:49:22,231 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93,93 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:49:22,232 INFO L399 AbstractCegarLoop]: === Iteration 95 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:49:22,232 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:49:22,232 INFO L85 PathProgramCache]: Analyzing trace with hash -1030192553, now seen corresponding path program 92 times [2024-09-20 18:49:22,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:49:22,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428944492] [2024-09-20 18:49:22,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:49:22,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:49:22,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:24,038 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:49:24,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:24,039 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-20 18:49:24,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:24,040 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-20 18:49:24,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:24,041 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-20 18:49:24,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:24,042 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-09-20 18:49:24,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:24,042 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-09-20 18:49:24,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:24,043 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-09-20 18:49:24,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:24,044 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-09-20 18:49:24,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:24,045 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-09-20 18:49:24,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:24,046 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-20 18:49:24,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:24,047 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2024-09-20 18:49:24,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:24,047 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-09-20 18:49:24,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:24,048 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2024-09-20 18:49:24,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:24,049 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2024-09-20 18:49:24,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:24,050 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2024-09-20 18:49:24,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:24,051 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-09-20 18:49:24,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:24,051 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2024-09-20 18:49:24,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:24,052 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2024-09-20 18:49:24,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:24,053 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2024-09-20 18:49:24,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:24,054 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2024-09-20 18:49:24,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:24,055 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2024-09-20 18:49:24,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:24,055 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2024-09-20 18:49:24,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:24,056 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2024-09-20 18:49:24,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:24,057 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2024-09-20 18:49:24,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:24,058 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2024-09-20 18:49:24,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:24,059 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2024-09-20 18:49:24,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:24,060 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2024-09-20 18:49:24,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:24,061 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2024-09-20 18:49:24,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:24,062 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2024-09-20 18:49:24,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:24,062 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2024-09-20 18:49:24,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:24,063 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2024-09-20 18:49:24,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:24,064 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2024-09-20 18:49:24,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:24,065 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2024-09-20 18:49:24,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:24,066 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2024-09-20 18:49:24,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:24,067 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2024-09-20 18:49:24,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:24,068 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2024-09-20 18:49:24,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:24,069 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2024-09-20 18:49:24,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:24,069 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2024-09-20 18:49:24,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:24,070 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2024-09-20 18:49:24,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:24,071 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2024-09-20 18:49:24,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:24,072 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2024-09-20 18:49:24,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:24,073 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2024-09-20 18:49:24,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:24,074 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2024-09-20 18:49:24,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:24,075 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2024-09-20 18:49:24,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:24,075 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2024-09-20 18:49:24,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:24,076 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 363 [2024-09-20 18:49:24,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:24,077 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2024-09-20 18:49:24,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:24,079 INFO L134 CoverageAnalysis]: Checked inductivity of 8557 backedges. 1173 proven. 3244 refuted. 0 times theorem prover too weak. 4140 trivial. 0 not checked. [2024-09-20 18:49:24,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:49:24,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428944492] [2024-09-20 18:49:24,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1428944492] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:49:24,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [732280494] [2024-09-20 18:49:24,079 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-20 18:49:24,079 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:49:24,079 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:49:24,080 INFO L229 MonitoredProcess]: Starting monitored process 94 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:49:24,081 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Waiting until timeout for monitored process [2024-09-20 18:49:24,206 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-20 18:49:24,206 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:49:24,209 INFO L262 TraceCheckSpWp]: Trace formula consists of 922 conjuncts, 97 conjuncts are in the unsatisfiable core [2024-09-20 18:49:24,213 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:49:24,409 INFO L134 CoverageAnalysis]: Checked inductivity of 8557 backedges. 1220 proven. 3197 refuted. 0 times theorem prover too weak. 4140 trivial. 0 not checked. [2024-09-20 18:49:24,409 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:49:26,142 INFO L134 CoverageAnalysis]: Checked inductivity of 8557 backedges. 1220 proven. 3197 refuted. 0 times theorem prover too weak. 4140 trivial. 0 not checked. [2024-09-20 18:49:26,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [732280494] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:49:26,142 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:49:26,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 52, 52] total 55 [2024-09-20 18:49:26,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593292389] [2024-09-20 18:49:26,142 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:49:26,143 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2024-09-20 18:49:26,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:49:26,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2024-09-20 18:49:26,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1238, Invalid=1732, Unknown=0, NotChecked=0, Total=2970 [2024-09-20 18:49:26,144 INFO L87 Difference]: Start difference. First operand 384 states and 385 transitions. Second operand has 55 states, 55 states have (on average 2.8) internal successors, (154), 53 states have internal predecessors, (154), 48 states have call successors, (50), 3 states have call predecessors, (50), 1 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2024-09-20 18:49:26,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:49:26,514 INFO L93 Difference]: Finished difference Result 397 states and 399 transitions. [2024-09-20 18:49:26,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2024-09-20 18:49:26,515 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 2.8) internal successors, (154), 53 states have internal predecessors, (154), 48 states have call successors, (50), 3 states have call predecessors, (50), 1 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) Word has length 381 [2024-09-20 18:49:26,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:49:26,518 INFO L225 Difference]: With dead ends: 397 [2024-09-20 18:49:26,518 INFO L226 Difference]: Without dead ends: 395 [2024-09-20 18:49:26,519 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 954 GetRequests, 804 SyntacticMatches, 96 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2863 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1244, Invalid=1836, Unknown=0, NotChecked=0, Total=3080 [2024-09-20 18:49:26,519 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 509 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 509 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-20 18:49:26,519 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 137 Invalid, 510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 509 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-20 18:49:26,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2024-09-20 18:49:26,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 391. [2024-09-20 18:49:26,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 291 states have (on average 1.006872852233677) internal successors, (293), 292 states have internal predecessors, (293), 50 states have call successors, (50), 50 states have call predecessors, (50), 49 states have return successors, (49), 48 states have call predecessors, (49), 49 states have call successors, (49) [2024-09-20 18:49:26,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 392 transitions. [2024-09-20 18:49:26,562 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 392 transitions. Word has length 381 [2024-09-20 18:49:26,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:49:26,562 INFO L474 AbstractCegarLoop]: Abstraction has 391 states and 392 transitions. [2024-09-20 18:49:26,562 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 2.8) internal successors, (154), 53 states have internal predecessors, (154), 48 states have call successors, (50), 3 states have call predecessors, (50), 1 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2024-09-20 18:49:26,563 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:49:26,563 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 392 transitions. [2024-09-20 18:49:26,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 389 [2024-09-20 18:49:26,564 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:49:26,565 INFO L216 NwaCegarLoop]: trace histogram [48, 48, 48, 47, 47, 47, 47, 47, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:49:26,583 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Forceful destruction successful, exit code 0 [2024-09-20 18:49:26,765 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94,94 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:49:26,765 INFO L399 AbstractCegarLoop]: === Iteration 96 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:49:26,765 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:49:26,766 INFO L85 PathProgramCache]: Analyzing trace with hash -228483475, now seen corresponding path program 93 times [2024-09-20 18:49:26,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:49:26,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158210618] [2024-09-20 18:49:26,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:49:26,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:49:26,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:30,001 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:49:30,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:30,003 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-20 18:49:30,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:30,003 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-20 18:49:30,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:30,004 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-20 18:49:30,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:30,005 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-09-20 18:49:30,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:30,006 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-09-20 18:49:30,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:30,006 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-09-20 18:49:30,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:30,007 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-09-20 18:49:30,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:30,008 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-09-20 18:49:30,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:30,009 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-20 18:49:30,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:30,010 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2024-09-20 18:49:30,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:30,010 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-09-20 18:49:30,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:30,011 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2024-09-20 18:49:30,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:30,012 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2024-09-20 18:49:30,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:30,013 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2024-09-20 18:49:30,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:30,013 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-09-20 18:49:30,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:30,014 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2024-09-20 18:49:30,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:30,015 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2024-09-20 18:49:30,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:30,016 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2024-09-20 18:49:30,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:30,016 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2024-09-20 18:49:30,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:30,017 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2024-09-20 18:49:30,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:30,018 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2024-09-20 18:49:30,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:30,019 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2024-09-20 18:49:30,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:30,020 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2024-09-20 18:49:30,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:30,021 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2024-09-20 18:49:30,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:30,022 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2024-09-20 18:49:30,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:30,023 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2024-09-20 18:49:30,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:30,024 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2024-09-20 18:49:30,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:30,026 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2024-09-20 18:49:30,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:30,027 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2024-09-20 18:49:30,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:30,028 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2024-09-20 18:49:30,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:30,029 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2024-09-20 18:49:30,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:30,031 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2024-09-20 18:49:30,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:30,032 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2024-09-20 18:49:30,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:30,033 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2024-09-20 18:49:30,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:30,034 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2024-09-20 18:49:30,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:30,035 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2024-09-20 18:49:30,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:30,036 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2024-09-20 18:49:30,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:30,038 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2024-09-20 18:49:30,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:30,039 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2024-09-20 18:49:30,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:30,040 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2024-09-20 18:49:30,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:30,041 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2024-09-20 18:49:30,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:30,042 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2024-09-20 18:49:30,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:30,043 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2024-09-20 18:49:30,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:30,045 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2024-09-20 18:49:30,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:30,046 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 363 [2024-09-20 18:49:30,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:30,047 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2024-09-20 18:49:30,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:30,048 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2024-09-20 18:49:30,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:30,050 INFO L134 CoverageAnalysis]: Checked inductivity of 8883 backedges. 3431 proven. 1128 refuted. 0 times theorem prover too weak. 4324 trivial. 0 not checked. [2024-09-20 18:49:30,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:49:30,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158210618] [2024-09-20 18:49:30,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158210618] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:49:30,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1827903531] [2024-09-20 18:49:30,051 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-20 18:49:30,051 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:49:30,051 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:49:30,053 INFO L229 MonitoredProcess]: Starting monitored process 95 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:49:30,054 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Waiting until timeout for monitored process [2024-09-20 18:49:30,301 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 48 check-sat command(s) [2024-09-20 18:49:30,301 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:49:30,307 INFO L262 TraceCheckSpWp]: Trace formula consists of 936 conjuncts, 98 conjuncts are in the unsatisfiable core [2024-09-20 18:49:30,312 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:49:30,492 INFO L134 CoverageAnalysis]: Checked inductivity of 8883 backedges. 3431 proven. 1128 refuted. 0 times theorem prover too weak. 4324 trivial. 0 not checked. [2024-09-20 18:49:30,492 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:49:32,970 INFO L134 CoverageAnalysis]: Checked inductivity of 8883 backedges. 3431 proven. 1128 refuted. 0 times theorem prover too weak. 4324 trivial. 0 not checked. [2024-09-20 18:49:32,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1827903531] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:49:32,971 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:49:32,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [99, 99, 99] total 100 [2024-09-20 18:49:32,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422138570] [2024-09-20 18:49:32,971 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:49:32,972 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 100 states [2024-09-20 18:49:32,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:49:32,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2024-09-20 18:49:32,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2501, Invalid=7399, Unknown=0, NotChecked=0, Total=9900 [2024-09-20 18:49:32,973 INFO L87 Difference]: Start difference. First operand 391 states and 392 transitions. Second operand has 100 states, 100 states have (on average 1.54) internal successors, (154), 100 states have internal predecessors, (154), 49 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2024-09-20 18:49:33,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:49:33,584 INFO L93 Difference]: Finished difference Result 544 states and 593 transitions. [2024-09-20 18:49:33,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2024-09-20 18:49:33,585 INFO L78 Accepts]: Start accepts. Automaton has has 100 states, 100 states have (on average 1.54) internal successors, (154), 100 states have internal predecessors, (154), 49 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) Word has length 388 [2024-09-20 18:49:33,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:49:33,588 INFO L225 Difference]: With dead ends: 544 [2024-09-20 18:49:33,588 INFO L226 Difference]: Without dead ends: 392 [2024-09-20 18:49:33,588 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 970 GetRequests, 776 SyntacticMatches, 96 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7235 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=2501, Invalid=7399, Unknown=0, NotChecked=0, Total=9900 [2024-09-20 18:49:33,589 INFO L434 NwaCegarLoop]: 103 mSDtfsCounter, 0 mSDsluCounter, 1051 mSDsCounter, 0 mSdLazyCounter, 1324 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1154 SdHoareTripleChecker+Invalid, 1324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-20 18:49:33,589 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1154 Invalid, 1324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1324 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-20 18:49:33,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2024-09-20 18:49:33,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 392. [2024-09-20 18:49:33,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 292 states have (on average 1.0068493150684932) internal successors, (294), 293 states have internal predecessors, (294), 50 states have call successors, (50), 50 states have call predecessors, (50), 49 states have return successors, (49), 48 states have call predecessors, (49), 49 states have call successors, (49) [2024-09-20 18:49:33,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 393 transitions. [2024-09-20 18:49:33,638 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 393 transitions. Word has length 388 [2024-09-20 18:49:33,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:49:33,639 INFO L474 AbstractCegarLoop]: Abstraction has 392 states and 393 transitions. [2024-09-20 18:49:33,639 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 100 states, 100 states have (on average 1.54) internal successors, (154), 100 states have internal predecessors, (154), 49 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2024-09-20 18:49:33,639 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:49:33,639 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 393 transitions. [2024-09-20 18:49:33,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 390 [2024-09-20 18:49:33,641 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:49:33,641 INFO L216 NwaCegarLoop]: trace histogram [48, 48, 48, 48, 47, 47, 47, 47, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:49:33,660 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Ended with exit code 0 [2024-09-20 18:49:33,845 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95,95 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:49:33,846 INFO L399 AbstractCegarLoop]: === Iteration 97 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:49:33,846 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:49:33,846 INFO L85 PathProgramCache]: Analyzing trace with hash 167795449, now seen corresponding path program 94 times [2024-09-20 18:49:33,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:49:33,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797268826] [2024-09-20 18:49:33,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:49:33,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:49:33,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:35,740 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:49:35,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:35,741 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-20 18:49:35,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:35,742 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-20 18:49:35,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:35,742 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-09-20 18:49:35,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:35,743 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-09-20 18:49:35,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:35,752 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-09-20 18:49:35,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:35,753 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-09-20 18:49:35,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:35,753 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-09-20 18:49:35,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:35,754 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-20 18:49:35,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:35,755 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2024-09-20 18:49:35,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:35,756 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2024-09-20 18:49:35,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:35,756 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2024-09-20 18:49:35,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:35,757 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2024-09-20 18:49:35,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:35,758 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2024-09-20 18:49:35,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:35,759 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-09-20 18:49:35,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:35,760 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2024-09-20 18:49:35,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:35,760 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2024-09-20 18:49:35,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:35,762 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2024-09-20 18:49:35,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:35,763 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2024-09-20 18:49:35,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:35,764 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2024-09-20 18:49:35,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:35,765 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2024-09-20 18:49:35,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:35,766 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2024-09-20 18:49:35,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:35,767 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2024-09-20 18:49:35,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:35,769 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2024-09-20 18:49:35,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:35,770 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2024-09-20 18:49:35,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:35,771 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2024-09-20 18:49:35,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:35,772 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2024-09-20 18:49:35,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:35,773 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2024-09-20 18:49:35,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:35,774 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2024-09-20 18:49:35,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:35,775 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2024-09-20 18:49:35,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:35,777 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2024-09-20 18:49:35,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:35,778 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2024-09-20 18:49:35,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:35,779 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2024-09-20 18:49:35,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:35,780 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2024-09-20 18:49:35,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:35,782 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2024-09-20 18:49:35,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:35,783 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2024-09-20 18:49:35,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:35,784 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2024-09-20 18:49:35,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:35,786 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2024-09-20 18:49:35,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:35,787 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2024-09-20 18:49:35,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:35,788 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2024-09-20 18:49:35,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:35,789 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2024-09-20 18:49:35,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:35,790 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2024-09-20 18:49:35,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:35,792 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2024-09-20 18:49:35,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:35,793 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2024-09-20 18:49:35,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:35,794 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2024-09-20 18:49:35,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:35,795 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 364 [2024-09-20 18:49:35,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:35,796 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 371 [2024-09-20 18:49:35,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:35,798 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 378 [2024-09-20 18:49:35,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:35,799 INFO L134 CoverageAnalysis]: Checked inductivity of 8931 backedges. 1222 proven. 3385 refuted. 0 times theorem prover too weak. 4324 trivial. 0 not checked. [2024-09-20 18:49:35,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:49:35,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797268826] [2024-09-20 18:49:35,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [797268826] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:49:35,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1862661243] [2024-09-20 18:49:35,800 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-20 18:49:35,800 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:49:35,800 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:49:35,804 INFO L229 MonitoredProcess]: Starting monitored process 96 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:49:35,806 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Waiting until timeout for monitored process [2024-09-20 18:49:35,951 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-20 18:49:35,951 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:49:35,955 INFO L262 TraceCheckSpWp]: Trace formula consists of 941 conjuncts, 102 conjuncts are in the unsatisfiable core [2024-09-20 18:49:35,959 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:49:36,158 INFO L134 CoverageAnalysis]: Checked inductivity of 8931 backedges. 1270 proven. 3337 refuted. 0 times theorem prover too weak. 4324 trivial. 0 not checked. [2024-09-20 18:49:36,158 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:49:37,917 INFO L134 CoverageAnalysis]: Checked inductivity of 8931 backedges. 1270 proven. 3337 refuted. 0 times theorem prover too weak. 4324 trivial. 0 not checked. [2024-09-20 18:49:37,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1862661243] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:49:37,917 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:49:37,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53, 53] total 56 [2024-09-20 18:49:37,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028918507] [2024-09-20 18:49:37,918 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:49:37,918 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2024-09-20 18:49:37,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:49:37,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2024-09-20 18:49:37,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1288, Invalid=1792, Unknown=0, NotChecked=0, Total=3080 [2024-09-20 18:49:37,919 INFO L87 Difference]: Start difference. First operand 392 states and 393 transitions. Second operand has 56 states, 56 states have (on average 2.8035714285714284) internal successors, (157), 54 states have internal predecessors, (157), 49 states have call successors, (51), 3 states have call predecessors, (51), 1 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2024-09-20 18:49:38,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:49:38,186 INFO L93 Difference]: Finished difference Result 405 states and 407 transitions. [2024-09-20 18:49:38,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2024-09-20 18:49:38,186 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 2.8035714285714284) internal successors, (157), 54 states have internal predecessors, (157), 49 states have call successors, (51), 3 states have call predecessors, (51), 1 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) Word has length 389 [2024-09-20 18:49:38,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:49:38,188 INFO L225 Difference]: With dead ends: 405 [2024-09-20 18:49:38,188 INFO L226 Difference]: Without dead ends: 403 [2024-09-20 18:49:38,189 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 974 GetRequests, 823 SyntacticMatches, 96 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2874 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1294, Invalid=1898, Unknown=0, NotChecked=0, Total=3192 [2024-09-20 18:49:38,189 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 499 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 500 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 499 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-20 18:49:38,189 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 120 Invalid, 500 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 499 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-20 18:49:38,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2024-09-20 18:49:38,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 399. [2024-09-20 18:49:38,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 399 states, 297 states have (on average 1.0067340067340067) internal successors, (299), 298 states have internal predecessors, (299), 51 states have call successors, (51), 51 states have call predecessors, (51), 50 states have return successors, (50), 49 states have call predecessors, (50), 50 states have call successors, (50) [2024-09-20 18:49:38,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 400 transitions. [2024-09-20 18:49:38,228 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 400 transitions. Word has length 389 [2024-09-20 18:49:38,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:49:38,228 INFO L474 AbstractCegarLoop]: Abstraction has 399 states and 400 transitions. [2024-09-20 18:49:38,229 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 2.8035714285714284) internal successors, (157), 54 states have internal predecessors, (157), 49 states have call successors, (51), 3 states have call predecessors, (51), 1 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2024-09-20 18:49:38,229 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:49:38,229 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 400 transitions. [2024-09-20 18:49:38,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 397 [2024-09-20 18:49:38,231 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:49:38,231 INFO L216 NwaCegarLoop]: trace histogram [49, 49, 49, 48, 48, 48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:49:38,249 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Forceful destruction successful, exit code 0 [2024-09-20 18:49:38,431 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96,96 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:49:38,432 INFO L399 AbstractCegarLoop]: === Iteration 98 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:49:38,432 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:49:38,432 INFO L85 PathProgramCache]: Analyzing trace with hash -1821037685, now seen corresponding path program 95 times [2024-09-20 18:49:38,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:49:38,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968595750] [2024-09-20 18:49:38,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:49:38,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:49:38,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:41,834 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:49:41,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:41,835 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-20 18:49:41,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:41,836 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-20 18:49:41,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:41,837 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-09-20 18:49:41,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:41,837 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-09-20 18:49:41,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:41,838 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-09-20 18:49:41,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:41,839 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-09-20 18:49:41,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:41,840 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-09-20 18:49:41,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:41,841 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-20 18:49:41,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:41,842 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2024-09-20 18:49:41,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:41,843 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2024-09-20 18:49:41,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:41,843 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2024-09-20 18:49:41,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:41,844 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2024-09-20 18:49:41,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:41,846 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2024-09-20 18:49:41,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:41,846 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-09-20 18:49:41,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:41,847 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2024-09-20 18:49:41,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:41,848 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2024-09-20 18:49:41,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:41,849 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2024-09-20 18:49:41,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:41,849 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2024-09-20 18:49:41,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:41,850 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2024-09-20 18:49:41,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:41,851 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2024-09-20 18:49:41,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:41,852 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2024-09-20 18:49:41,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:41,853 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2024-09-20 18:49:41,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:41,853 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2024-09-20 18:49:41,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:41,854 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2024-09-20 18:49:41,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:41,855 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2024-09-20 18:49:41,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:41,856 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2024-09-20 18:49:41,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:41,856 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2024-09-20 18:49:41,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:41,857 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2024-09-20 18:49:41,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:41,858 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2024-09-20 18:49:41,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:41,859 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2024-09-20 18:49:41,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:41,860 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2024-09-20 18:49:41,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:41,860 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2024-09-20 18:49:41,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:41,861 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2024-09-20 18:49:41,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:41,862 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2024-09-20 18:49:41,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:41,863 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2024-09-20 18:49:41,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:41,864 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2024-09-20 18:49:41,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:41,864 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2024-09-20 18:49:41,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:41,865 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2024-09-20 18:49:41,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:41,866 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2024-09-20 18:49:41,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:41,867 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2024-09-20 18:49:41,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:41,867 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2024-09-20 18:49:41,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:41,868 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2024-09-20 18:49:41,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:41,869 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2024-09-20 18:49:41,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:41,870 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2024-09-20 18:49:41,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:41,871 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 364 [2024-09-20 18:49:41,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:41,872 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 371 [2024-09-20 18:49:41,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:41,872 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 378 [2024-09-20 18:49:41,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:41,873 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 385 [2024-09-20 18:49:41,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:41,875 INFO L134 CoverageAnalysis]: Checked inductivity of 9264 backedges. 3576 proven. 1176 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2024-09-20 18:49:41,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:49:41,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968595750] [2024-09-20 18:49:41,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968595750] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:49:41,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1772968734] [2024-09-20 18:49:41,875 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-20 18:49:41,875 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:49:41,875 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:49:41,876 INFO L229 MonitoredProcess]: Starting monitored process 97 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:49:41,877 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Waiting until timeout for monitored process [2024-09-20 18:49:42,052 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 49 check-sat command(s) [2024-09-20 18:49:42,053 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:49:42,056 INFO L262 TraceCheckSpWp]: Trace formula consists of 955 conjuncts, 100 conjuncts are in the unsatisfiable core [2024-09-20 18:49:42,060 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:49:42,242 INFO L134 CoverageAnalysis]: Checked inductivity of 9264 backedges. 3576 proven. 1176 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2024-09-20 18:49:42,242 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:49:44,823 INFO L134 CoverageAnalysis]: Checked inductivity of 9264 backedges. 3576 proven. 1176 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2024-09-20 18:49:44,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1772968734] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:49:44,824 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:49:44,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [101, 101, 101] total 102 [2024-09-20 18:49:44,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625408751] [2024-09-20 18:49:44,824 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:49:44,825 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 102 states [2024-09-20 18:49:44,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:49:44,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2024-09-20 18:49:44,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2602, Invalid=7700, Unknown=0, NotChecked=0, Total=10302 [2024-09-20 18:49:44,826 INFO L87 Difference]: Start difference. First operand 399 states and 400 transitions. Second operand has 102 states, 102 states have (on average 1.5392156862745099) internal successors, (157), 102 states have internal predecessors, (157), 50 states have call successors, (51), 2 states have call predecessors, (51), 1 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49)