./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loop-invgen/half_2.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 --cacsl2boogietranslator.check.absence.of.signed.integer.overflows true --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a9b967e5 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/half_2.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 0b362a98d328467ff4a069dbed2be3429090ca070e60d49c76297e4bb94402b7 --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --cacsl2boogietranslator.check.absence.of.signed.integer.overflows true --- Real Ultimate output --- This is Ultimate 0.2.4-dev-a9b967e-m [2024-09-12 18:00:04,188 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-12 18:00:04,271 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-12 18:00:04,278 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-12 18:00:04,278 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-12 18:00:04,307 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-12 18:00:04,308 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-12 18:00:04,308 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-12 18:00:04,309 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-12 18:00:04,309 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-12 18:00:04,309 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-12 18:00:04,312 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-12 18:00:04,313 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-12 18:00:04,313 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-12 18:00:04,313 INFO L153 SettingsManager]: * Use SBE=true [2024-09-12 18:00:04,314 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-12 18:00:04,314 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-12 18:00:04,314 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-12 18:00:04,314 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-12 18:00:04,315 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-12 18:00:04,316 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-12 18:00:04,319 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-12 18:00:04,319 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-12 18:00:04,319 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-12 18:00:04,320 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-12 18:00:04,322 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-12 18:00:04,323 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-12 18:00:04,323 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-12 18:00:04,323 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-12 18:00:04,323 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-12 18:00:04,324 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-12 18:00:04,324 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-12 18:00:04,324 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-12 18:00:04,324 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-12 18:00:04,325 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-12 18:00:04,325 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-12 18:00:04,325 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-12 18:00:04,326 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-12 18:00:04,326 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-12 18:00:04,327 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-12 18:00:04,327 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-12 18:00:04,327 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-12 18:00:04,328 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0b362a98d328467ff4a069dbed2be3429090ca070e60d49c76297e4bb94402b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2024-09-12 18:00:04,622 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-12 18:00:04,656 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-12 18:00:04,658 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-12 18:00:04,662 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-12 18:00:04,663 INFO L274 PluginConnector]: CDTParser initialized [2024-09-12 18:00:04,664 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/loop-invgen/half_2.i [2024-09-12 18:00:06,137 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-12 18:00:06,319 INFO L384 CDTParser]: Found 1 translation units. [2024-09-12 18:00:06,319 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-invgen/half_2.i [2024-09-12 18:00:06,329 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/79ecdaeab/cd86fdd79ecc43e78a4de5e6e82e9ddf/FLAGd2c59e28e [2024-09-12 18:00:06,346 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/79ecdaeab/cd86fdd79ecc43e78a4de5e6e82e9ddf [2024-09-12 18:00:06,358 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-12 18:00:06,361 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-12 18:00:06,363 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-12 18:00:06,364 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-12 18:00:06,368 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-12 18:00:06,369 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.09 06:00:06" (1/1) ... [2024-09-12 18:00:06,370 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1baf3b05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 06:00:06, skipping insertion in model container [2024-09-12 18:00:06,370 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.09 06:00:06" (1/1) ... [2024-09-12 18:00:06,388 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-12 18:00:06,530 WARN L247 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/half_2.i[893,906] [2024-09-12 18:00:06,547 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-12 18:00:06,555 INFO L200 MainTranslator]: Completed pre-run [2024-09-12 18:00:06,567 WARN L247 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/half_2.i[893,906] [2024-09-12 18:00:06,571 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-12 18:00:06,587 INFO L204 MainTranslator]: Completed translation [2024-09-12 18:00:06,588 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 06:00:06 WrapperNode [2024-09-12 18:00:06,588 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-12 18:00:06,589 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-12 18:00:06,589 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-12 18:00:06,589 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-12 18:00:06,594 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 06:00:06" (1/1) ... [2024-09-12 18:00:06,600 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 06:00:06" (1/1) ... [2024-09-12 18:00:06,606 INFO L138 Inliner]: procedures = 16, calls = 7, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-12 18:00:06,606 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-12 18:00:06,608 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-12 18:00:06,608 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-12 18:00:06,608 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-12 18:00:06,616 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 06:00:06" (1/1) ... [2024-09-12 18:00:06,617 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 06:00:06" (1/1) ... [2024-09-12 18:00:06,618 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 06:00:06" (1/1) ... [2024-09-12 18:00:06,638 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]. [2024-09-12 18:00:06,639 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 06:00:06" (1/1) ... [2024-09-12 18:00:06,640 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 06:00:06" (1/1) ... [2024-09-12 18:00:06,642 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 06:00:06" (1/1) ... [2024-09-12 18:00:06,646 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 06:00:06" (1/1) ... [2024-09-12 18:00:06,648 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 06:00:06" (1/1) ... [2024-09-12 18:00:06,649 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 06:00:06" (1/1) ... [2024-09-12 18:00:06,653 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-12 18:00:06,654 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-12 18:00:06,654 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-12 18:00:06,654 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-12 18:00:06,655 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 06:00:06" (1/1) ... [2024-09-12 18:00:06,660 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-12 18:00:06,671 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:00:06,687 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) [2024-09-12 18:00:06,690 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 [2024-09-12 18:00:06,734 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-12 18:00:06,735 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-12 18:00:06,735 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-12 18:00:06,735 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-12 18:00:06,735 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-12 18:00:06,735 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-12 18:00:06,735 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-12 18:00:06,736 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-12 18:00:06,737 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-12 18:00:06,737 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-12 18:00:06,795 INFO L242 CfgBuilder]: Building ICFG [2024-09-12 18:00:06,797 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-12 18:00:06,953 INFO L? ?]: Removed 20 outVars from TransFormulas that were not future-live. [2024-09-12 18:00:06,957 INFO L291 CfgBuilder]: Performing block encoding [2024-09-12 18:00:06,978 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-12 18:00:06,978 INFO L318 CfgBuilder]: Removed 2 assume(true) statements. [2024-09-12 18:00:06,979 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.09 06:00:06 BoogieIcfgContainer [2024-09-12 18:00:06,979 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-12 18:00:06,981 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-12 18:00:06,981 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-12 18:00:06,984 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-12 18:00:06,984 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.09 06:00:06" (1/3) ... [2024-09-12 18:00:06,984 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29d3de70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.09 06:00:06, skipping insertion in model container [2024-09-12 18:00:06,984 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 06:00:06" (2/3) ... [2024-09-12 18:00:06,985 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29d3de70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.09 06:00:06, skipping insertion in model container [2024-09-12 18:00:06,985 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.09 06:00:06" (3/3) ... [2024-09-12 18:00:06,986 INFO L112 eAbstractionObserver]: Analyzing ICFG half_2.i [2024-09-12 18:00:07,004 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-12 18:00:07,005 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2024-09-12 18:00:07,063 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-12 18:00:07,069 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;@7f89eed9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-12 18:00:07,069 INFO L337 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2024-09-12 18:00:07,073 INFO L276 IsEmpty]: Start isEmpty. Operand has 42 states, 24 states have (on average 1.7083333333333333) internal successors, (41), 35 states have internal predecessors, (41), 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) [2024-09-12 18:00:07,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-09-12 18:00:07,078 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:00:07,078 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:00:07,079 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2024-09-12 18:00:07,084 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:00:07,085 INFO L85 PathProgramCache]: Analyzing trace with hash 760309133, now seen corresponding path program 1 times [2024-09-12 18:00:07,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:00:07,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016947042] [2024-09-12 18:00:07,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:00:07,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:00:07,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:00:07,364 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:00:07,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:00:07,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:00:07,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:00:07,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016947042] [2024-09-12 18:00:07,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016947042] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 18:00:07,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 18:00:07,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-12 18:00:07,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804276700] [2024-09-12 18:00:07,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 18:00:07,392 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-09-12 18:00:07,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:00:07,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-09-12 18:00:07,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-09-12 18:00:07,419 INFO L87 Difference]: Start difference. First operand has 42 states, 24 states have (on average 1.7083333333333333) internal successors, (41), 35 states have internal predecessors, (41), 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 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:00:07,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:00:07,508 INFO L93 Difference]: Finished difference Result 73 states and 84 transitions. [2024-09-12 18:00:07,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-12 18:00:07,511 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 8 [2024-09-12 18:00:07,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:00:07,518 INFO L225 Difference]: With dead ends: 73 [2024-09-12 18:00:07,518 INFO L226 Difference]: Without dead ends: 40 [2024-09-12 18:00:07,521 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-09-12 18:00:07,526 INFO L434 NwaCegarLoop]: 38 mSDtfsCounter, 1 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 18:00:07,527 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 98 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 18:00:07,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2024-09-12 18:00:07,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 39. [2024-09-12 18:00:07,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 23 states have (on average 1.565217391304348) internal successors, (36), 33 states have internal predecessors, (36), 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) [2024-09-12 18:00:07,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 41 transitions. [2024-09-12 18:00:07,567 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 41 transitions. Word has length 8 [2024-09-12 18:00:07,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:00:07,569 INFO L474 AbstractCegarLoop]: Abstraction has 39 states and 41 transitions. [2024-09-12 18:00:07,569 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:00:07,570 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:00:07,571 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 41 transitions. [2024-09-12 18:00:07,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-09-12 18:00:07,571 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:00:07,571 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:00:07,571 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-12 18:00:07,572 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2024-09-12 18:00:07,573 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:00:07,574 INFO L85 PathProgramCache]: Analyzing trace with hash 2094745097, now seen corresponding path program 1 times [2024-09-12 18:00:07,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:00:07,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335162457] [2024-09-12 18:00:07,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:00:07,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:00:07,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:00:07,645 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:00:07,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:00:07,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:00:07,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:00:07,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335162457] [2024-09-12 18:00:07,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335162457] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 18:00:07,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 18:00:07,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-12 18:00:07,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310621350] [2024-09-12 18:00:07,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 18:00:07,654 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-12 18:00:07,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:00:07,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-12 18:00:07,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-12 18:00:07,655 INFO L87 Difference]: Start difference. First operand 39 states and 41 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:00:07,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:00:07,690 INFO L93 Difference]: Finished difference Result 39 states and 41 transitions. [2024-09-12 18:00:07,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-12 18:00:07,691 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 9 [2024-09-12 18:00:07,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:00:07,692 INFO L225 Difference]: With dead ends: 39 [2024-09-12 18:00:07,692 INFO L226 Difference]: Without dead ends: 38 [2024-09-12 18:00:07,693 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-12 18:00:07,695 INFO L434 NwaCegarLoop]: 29 mSDtfsCounter, 21 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 18:00:07,696 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 38 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 18:00:07,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2024-09-12 18:00:07,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2024-09-12 18:00:07,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 23 states have (on average 1.5217391304347827) internal successors, (35), 32 states have internal predecessors, (35), 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) [2024-09-12 18:00:07,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 40 transitions. [2024-09-12 18:00:07,708 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 40 transitions. Word has length 9 [2024-09-12 18:00:07,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:00:07,713 INFO L474 AbstractCegarLoop]: Abstraction has 38 states and 40 transitions. [2024-09-12 18:00:07,714 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:00:07,714 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:00:07,714 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 40 transitions. [2024-09-12 18:00:07,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-09-12 18:00:07,715 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:00:07,715 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:00:07,715 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-09-12 18:00:07,715 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2024-09-12 18:00:07,716 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:00:07,716 INFO L85 PathProgramCache]: Analyzing trace with hash 2094746695, now seen corresponding path program 1 times [2024-09-12 18:00:07,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:00:07,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360328120] [2024-09-12 18:00:07,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:00:07,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:00:07,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:00:07,777 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:00:07,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:00:07,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:00:07,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:00:07,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360328120] [2024-09-12 18:00:07,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360328120] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 18:00:07,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 18:00:07,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-12 18:00:07,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865175221] [2024-09-12 18:00:07,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 18:00:07,790 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-09-12 18:00:07,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:00:07,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-09-12 18:00:07,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-09-12 18:00:07,792 INFO L87 Difference]: Start difference. First operand 38 states and 40 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:00:07,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:00:07,836 INFO L93 Difference]: Finished difference Result 44 states and 47 transitions. [2024-09-12 18:00:07,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-12 18:00:07,837 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 9 [2024-09-12 18:00:07,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:00:07,839 INFO L225 Difference]: With dead ends: 44 [2024-09-12 18:00:07,839 INFO L226 Difference]: Without dead ends: 43 [2024-09-12 18:00:07,839 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-09-12 18:00:07,842 INFO L434 NwaCegarLoop]: 30 mSDtfsCounter, 10 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 18:00:07,843 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 81 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 18:00:07,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2024-09-12 18:00:07,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 37. [2024-09-12 18:00:07,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 23 states have (on average 1.4782608695652173) internal successors, (34), 31 states have internal predecessors, (34), 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) [2024-09-12 18:00:07,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 39 transitions. [2024-09-12 18:00:07,866 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 39 transitions. Word has length 9 [2024-09-12 18:00:07,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:00:07,866 INFO L474 AbstractCegarLoop]: Abstraction has 37 states and 39 transitions. [2024-09-12 18:00:07,866 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:00:07,866 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:00:07,866 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 39 transitions. [2024-09-12 18:00:07,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-09-12 18:00:07,867 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:00:07,867 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:00:07,867 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-09-12 18:00:07,867 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2024-09-12 18:00:07,867 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:00:07,867 INFO L85 PathProgramCache]: Analyzing trace with hash 512588635, now seen corresponding path program 1 times [2024-09-12 18:00:07,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:00:07,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774780755] [2024-09-12 18:00:07,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:00:07,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:00:07,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:00:07,972 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:00:07,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:00:07,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:00:07,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:00:07,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774780755] [2024-09-12 18:00:07,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774780755] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 18:00:07,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 18:00:07,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-09-12 18:00:07,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433814071] [2024-09-12 18:00:07,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 18:00:07,987 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-12 18:00:07,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:00:07,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-12 18:00:07,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-09-12 18:00:07,989 INFO L87 Difference]: Start difference. First operand 37 states and 39 transitions. Second operand has 5 states, 4 states have (on average 1.75) internal successors, (7), 5 states have internal predecessors, (7), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:00:08,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:00:08,058 INFO L93 Difference]: Finished difference Result 57 states and 60 transitions. [2024-09-12 18:00:08,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-12 18:00:08,059 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 5 states have internal predecessors, (7), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2024-09-12 18:00:08,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:00:08,060 INFO L225 Difference]: With dead ends: 57 [2024-09-12 18:00:08,060 INFO L226 Difference]: Without dead ends: 54 [2024-09-12 18:00:08,061 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-09-12 18:00:08,062 INFO L434 NwaCegarLoop]: 28 mSDtfsCounter, 16 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 18:00:08,062 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 102 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 18:00:08,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2024-09-12 18:00:08,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 50. [2024-09-12 18:00:08,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 35 states have (on average 1.4285714285714286) internal successors, (50), 43 states have internal predecessors, (50), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-12 18:00:08,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 57 transitions. [2024-09-12 18:00:08,076 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 57 transitions. Word has length 10 [2024-09-12 18:00:08,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:00:08,076 INFO L474 AbstractCegarLoop]: Abstraction has 50 states and 57 transitions. [2024-09-12 18:00:08,076 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 5 states have internal predecessors, (7), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:00:08,077 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:00:08,077 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 57 transitions. [2024-09-12 18:00:08,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-09-12 18:00:08,077 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:00:08,077 INFO L216 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:00:08,078 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-09-12 18:00:08,078 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2024-09-12 18:00:08,078 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:00:08,078 INFO L85 PathProgramCache]: Analyzing trace with hash -900254453, now seen corresponding path program 1 times [2024-09-12 18:00:08,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:00:08,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020736429] [2024-09-12 18:00:08,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:00:08,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:00:08,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:00:08,196 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:00:08,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:00:08,204 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:00:08,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:00:08,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020736429] [2024-09-12 18:00:08,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020736429] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:00:08,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1386372743] [2024-09-12 18:00:08,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:00:08,205 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:00:08,206 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:00:08,208 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) [2024-09-12 18:00:08,214 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-12 18:00:08,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:00:08,254 INFO L262 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-09-12 18:00:08,258 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:00:08,350 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:00:08,350 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:00:08,472 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:00:08,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1386372743] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:00:08,473 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:00:08,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 12 [2024-09-12 18:00:08,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345055268] [2024-09-12 18:00:08,475 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:00:08,476 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-09-12 18:00:08,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:00:08,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-09-12 18:00:08,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-09-12 18:00:08,477 INFO L87 Difference]: Start difference. First operand 50 states and 57 transitions. Second operand has 13 states, 12 states have (on average 2.0) internal successors, (24), 13 states have internal predecessors, (24), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:00:08,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:00:08,644 INFO L93 Difference]: Finished difference Result 79 states and 95 transitions. [2024-09-12 18:00:08,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-09-12 18:00:08,645 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.0) internal successors, (24), 13 states have internal predecessors, (24), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2024-09-12 18:00:08,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:00:08,646 INFO L225 Difference]: With dead ends: 79 [2024-09-12 18:00:08,646 INFO L226 Difference]: Without dead ends: 78 [2024-09-12 18:00:08,647 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2024-09-12 18:00:08,647 INFO L434 NwaCegarLoop]: 34 mSDtfsCounter, 20 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 214 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 18:00:08,647 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 214 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 18:00:08,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2024-09-12 18:00:08,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 62. [2024-09-12 18:00:08,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 47 states have (on average 1.4680851063829787) internal successors, (69), 55 states have internal predecessors, (69), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-12 18:00:08,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 76 transitions. [2024-09-12 18:00:08,660 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 76 transitions. Word has length 13 [2024-09-12 18:00:08,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:00:08,660 INFO L474 AbstractCegarLoop]: Abstraction has 62 states and 76 transitions. [2024-09-12 18:00:08,660 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.0) internal successors, (24), 13 states have internal predecessors, (24), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:00:08,661 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:00:08,661 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 76 transitions. [2024-09-12 18:00:08,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-09-12 18:00:08,661 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:00:08,662 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:00:08,678 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-09-12 18:00:08,865 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:00:08,866 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2024-09-12 18:00:08,867 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:00:08,870 INFO L85 PathProgramCache]: Analyzing trace with hash 1965406594, now seen corresponding path program 1 times [2024-09-12 18:00:08,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:00:08,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2336640] [2024-09-12 18:00:08,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:00:08,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:00:08,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:00:09,127 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:00:09,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:00:09,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:00:09,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:00:09,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2336640] [2024-09-12 18:00:09,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2336640] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 18:00:09,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 18:00:09,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-09-12 18:00:09,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992555531] [2024-09-12 18:00:09,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 18:00:09,135 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-09-12 18:00:09,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:00:09,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-09-12 18:00:09,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-09-12 18:00:09,138 INFO L87 Difference]: Start difference. First operand 62 states and 76 transitions. Second operand has 9 states, 8 states have (on average 1.375) internal successors, (11), 8 states have internal predecessors, (11), 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) [2024-09-12 18:00:09,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:00:09,238 INFO L93 Difference]: Finished difference Result 73 states and 87 transitions. [2024-09-12 18:00:09,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-12 18:00:09,239 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.375) internal successors, (11), 8 states have internal predecessors, (11), 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 15 [2024-09-12 18:00:09,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:00:09,241 INFO L225 Difference]: With dead ends: 73 [2024-09-12 18:00:09,242 INFO L226 Difference]: Without dead ends: 71 [2024-09-12 18:00:09,243 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-09-12 18:00:09,244 INFO L434 NwaCegarLoop]: 26 mSDtfsCounter, 6 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 183 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 18:00:09,245 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 183 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 18:00:09,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2024-09-12 18:00:09,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 70. [2024-09-12 18:00:09,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 53 states have (on average 1.4150943396226414) internal successors, (75), 62 states have internal predecessors, (75), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2024-09-12 18:00:09,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 84 transitions. [2024-09-12 18:00:09,262 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 84 transitions. Word has length 15 [2024-09-12 18:00:09,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:00:09,263 INFO L474 AbstractCegarLoop]: Abstraction has 70 states and 84 transitions. [2024-09-12 18:00:09,263 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.375) internal successors, (11), 8 states have internal predecessors, (11), 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) [2024-09-12 18:00:09,263 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:00:09,264 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 84 transitions. [2024-09-12 18:00:09,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-09-12 18:00:09,264 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:00:09,264 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:00:09,264 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-09-12 18:00:09,264 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2024-09-12 18:00:09,265 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:00:09,265 INFO L85 PathProgramCache]: Analyzing trace with hash -1856150695, now seen corresponding path program 1 times [2024-09-12 18:00:09,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:00:09,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167160633] [2024-09-12 18:00:09,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:00:09,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:00:09,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:00:09,334 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:00:09,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:00:09,337 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:00:09,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:00:09,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167160633] [2024-09-12 18:00:09,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167160633] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:00:09,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [154563113] [2024-09-12 18:00:09,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:00:09,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:00:09,338 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:00:09,343 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) [2024-09-12 18:00:09,351 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-12 18:00:09,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:00:09,388 INFO L262 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-09-12 18:00:09,389 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:00:09,438 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:00:09,439 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:00:09,509 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:00:09,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [154563113] provided 1 perfect and 1 imperfect interpolant sequences [2024-09-12 18:00:09,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-09-12 18:00:09,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5, 3] total 9 [2024-09-12 18:00:09,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701297091] [2024-09-12 18:00:09,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 18:00:09,520 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-09-12 18:00:09,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:00:09,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-09-12 18:00:09,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-09-12 18:00:09,521 INFO L87 Difference]: Start difference. First operand 70 states and 84 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:00:09,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:00:09,548 INFO L93 Difference]: Finished difference Result 70 states and 84 transitions. [2024-09-12 18:00:09,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-12 18:00:09,548 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2024-09-12 18:00:09,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:00:09,550 INFO L225 Difference]: With dead ends: 70 [2024-09-12 18:00:09,551 INFO L226 Difference]: Without dead ends: 69 [2024-09-12 18:00:09,552 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-09-12 18:00:09,552 INFO L434 NwaCegarLoop]: 28 mSDtfsCounter, 29 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 18:00:09,553 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 37 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 18:00:09,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2024-09-12 18:00:09,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 60. [2024-09-12 18:00:09,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 45 states have (on average 1.3777777777777778) internal successors, (62), 53 states have internal predecessors, (62), 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) [2024-09-12 18:00:09,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 69 transitions. [2024-09-12 18:00:09,568 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 69 transitions. Word has length 15 [2024-09-12 18:00:09,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:00:09,569 INFO L474 AbstractCegarLoop]: Abstraction has 60 states and 69 transitions. [2024-09-12 18:00:09,569 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:00:09,569 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:00:09,569 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 69 transitions. [2024-09-12 18:00:09,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-09-12 18:00:09,570 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:00:09,570 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:00:09,587 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-09-12 18:00:09,770 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-09-12 18:00:09,771 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2024-09-12 18:00:09,771 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:00:09,772 INFO L85 PathProgramCache]: Analyzing trace with hash -1856101171, now seen corresponding path program 1 times [2024-09-12 18:00:09,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:00:09,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022764085] [2024-09-12 18:00:09,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:00:09,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:00:09,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:00:09,806 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:00:09,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:00:09,811 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:00:09,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:00:09,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022764085] [2024-09-12 18:00:09,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1022764085] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:00:09,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [585348418] [2024-09-12 18:00:09,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:00:09,811 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:00:09,812 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:00:09,813 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) [2024-09-12 18:00:09,814 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-12 18:00:09,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:00:09,844 INFO L262 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-09-12 18:00:09,844 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:00:09,862 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:00:09,862 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-12 18:00:09,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [585348418] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 18:00:09,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-12 18:00:09,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2024-09-12 18:00:09,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802544226] [2024-09-12 18:00:09,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 18:00:09,863 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-09-12 18:00:09,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:00:09,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-09-12 18:00:09,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-09-12 18:00:09,864 INFO L87 Difference]: Start difference. First operand 60 states and 69 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:00:09,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:00:09,892 INFO L93 Difference]: Finished difference Result 60 states and 69 transitions. [2024-09-12 18:00:09,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-12 18:00:09,893 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2024-09-12 18:00:09,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:00:09,894 INFO L225 Difference]: With dead ends: 60 [2024-09-12 18:00:09,894 INFO L226 Difference]: Without dead ends: 59 [2024-09-12 18:00:09,894 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-09-12 18:00:09,895 INFO L434 NwaCegarLoop]: 30 mSDtfsCounter, 2 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 18:00:09,895 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 78 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 18:00:09,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2024-09-12 18:00:09,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2024-09-12 18:00:09,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 45 states have (on average 1.3111111111111111) internal successors, (59), 52 states have internal predecessors, (59), 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) [2024-09-12 18:00:09,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 66 transitions. [2024-09-12 18:00:09,911 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 66 transitions. Word has length 15 [2024-09-12 18:00:09,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:00:09,912 INFO L474 AbstractCegarLoop]: Abstraction has 59 states and 66 transitions. [2024-09-12 18:00:09,912 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:00:09,913 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:00:09,913 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 66 transitions. [2024-09-12 18:00:09,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-09-12 18:00:09,913 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:00:09,914 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:00:09,928 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-09-12 18:00:10,114 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-09-12 18:00:10,115 INFO L399 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2024-09-12 18:00:10,115 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:00:10,115 INFO L85 PathProgramCache]: Analyzing trace with hash -1704561397, now seen corresponding path program 1 times [2024-09-12 18:00:10,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:00:10,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962211544] [2024-09-12 18:00:10,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:00:10,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:00:10,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:00:10,138 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:00:10,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:00:10,140 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:00:10,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:00:10,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962211544] [2024-09-12 18:00:10,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1962211544] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:00:10,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [583168792] [2024-09-12 18:00:10,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:00:10,141 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:00:10,142 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:00:10,144 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) [2024-09-12 18:00:10,145 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-12 18:00:10,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:00:10,176 INFO L262 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-09-12 18:00:10,177 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:00:10,198 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:00:10,199 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:00:10,222 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:00:10,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [583168792] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:00:10,222 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:00:10,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-09-12 18:00:10,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280849613] [2024-09-12 18:00:10,223 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:00:10,223 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-09-12 18:00:10,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:00:10,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-09-12 18:00:10,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-09-12 18:00:10,224 INFO L87 Difference]: Start difference. First operand 59 states and 66 transitions. Second operand has 7 states, 6 states have (on average 5.0) internal successors, (30), 7 states have internal predecessors, (30), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:00:10,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:00:10,265 INFO L93 Difference]: Finished difference Result 63 states and 70 transitions. [2024-09-12 18:00:10,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-12 18:00:10,265 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 5.0) internal successors, (30), 7 states have internal predecessors, (30), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2024-09-12 18:00:10,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:00:10,266 INFO L225 Difference]: With dead ends: 63 [2024-09-12 18:00:10,266 INFO L226 Difference]: Without dead ends: 62 [2024-09-12 18:00:10,266 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-09-12 18:00:10,267 INFO L434 NwaCegarLoop]: 29 mSDtfsCounter, 0 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 18:00:10,267 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 63 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 18:00:10,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2024-09-12 18:00:10,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2024-09-12 18:00:10,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 48 states have (on average 1.25) internal successors, (60), 55 states have internal predecessors, (60), 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) [2024-09-12 18:00:10,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 67 transitions. [2024-09-12 18:00:10,284 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 67 transitions. Word has length 16 [2024-09-12 18:00:10,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:00:10,284 INFO L474 AbstractCegarLoop]: Abstraction has 62 states and 67 transitions. [2024-09-12 18:00:10,284 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 5.0) internal successors, (30), 7 states have internal predecessors, (30), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:00:10,285 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:00:10,285 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 67 transitions. [2024-09-12 18:00:10,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-09-12 18:00:10,285 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:00:10,286 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:00:10,310 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-09-12 18:00:10,486 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:00:10,487 INFO L399 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2024-09-12 18:00:10,487 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:00:10,487 INFO L85 PathProgramCache]: Analyzing trace with hash -1856464438, now seen corresponding path program 1 times [2024-09-12 18:00:10,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:00:10,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888761886] [2024-09-12 18:00:10,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:00:10,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:00:10,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:00:10,597 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:00:10,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:00:10,601 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-12 18:00:10,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:00:10,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:00:10,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:00:10,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888761886] [2024-09-12 18:00:10,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888761886] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 18:00:10,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 18:00:10,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-09-12 18:00:10,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069762585] [2024-09-12 18:00:10,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 18:00:10,606 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-09-12 18:00:10,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:00:10,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-09-12 18:00:10,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-09-12 18:00:10,607 INFO L87 Difference]: Start difference. First operand 62 states and 67 transitions. Second operand has 8 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 8 states have internal predecessors, (13), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-12 18:00:10,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:00:10,684 INFO L93 Difference]: Finished difference Result 66 states and 72 transitions. [2024-09-12 18:00:10,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-12 18:00:10,685 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 8 states have internal predecessors, (13), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 18 [2024-09-12 18:00:10,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:00:10,686 INFO L225 Difference]: With dead ends: 66 [2024-09-12 18:00:10,686 INFO L226 Difference]: Without dead ends: 65 [2024-09-12 18:00:10,686 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-09-12 18:00:10,686 INFO L434 NwaCegarLoop]: 24 mSDtfsCounter, 5 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 18:00:10,687 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 109 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 18:00:10,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2024-09-12 18:00:10,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 64. [2024-09-12 18:00:10,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 50 states have (on average 1.24) internal successors, (62), 56 states have internal predecessors, (62), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-12 18:00:10,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 69 transitions. [2024-09-12 18:00:10,698 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 69 transitions. Word has length 18 [2024-09-12 18:00:10,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:00:10,699 INFO L474 AbstractCegarLoop]: Abstraction has 64 states and 69 transitions. [2024-09-12 18:00:10,699 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 8 states have internal predecessors, (13), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-12 18:00:10,699 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:00:10,700 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 69 transitions. [2024-09-12 18:00:10,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-09-12 18:00:10,700 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:00:10,700 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:00:10,700 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-09-12 18:00:10,701 INFO L399 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2024-09-12 18:00:10,701 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:00:10,701 INFO L85 PathProgramCache]: Analyzing trace with hash -1715822651, now seen corresponding path program 1 times [2024-09-12 18:00:10,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:00:10,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480605334] [2024-09-12 18:00:10,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:00:10,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:00:10,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:00:10,737 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:00:10,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:00:10,740 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-12 18:00:10,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:00:10,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:00:10,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:00:10,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480605334] [2024-09-12 18:00:10,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480605334] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 18:00:10,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 18:00:10,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-09-12 18:00:10,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651937382] [2024-09-12 18:00:10,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 18:00:10,744 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-12 18:00:10,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:00:10,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-12 18:00:10,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-12 18:00:10,745 INFO L87 Difference]: Start difference. First operand 64 states and 69 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-12 18:00:10,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:00:10,805 INFO L93 Difference]: Finished difference Result 76 states and 83 transitions. [2024-09-12 18:00:10,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-12 18:00:10,805 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 19 [2024-09-12 18:00:10,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:00:10,806 INFO L225 Difference]: With dead ends: 76 [2024-09-12 18:00:10,806 INFO L226 Difference]: Without dead ends: 75 [2024-09-12 18:00:10,807 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-12 18:00:10,807 INFO L434 NwaCegarLoop]: 28 mSDtfsCounter, 4 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 18:00:10,807 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 98 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 18:00:10,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2024-09-12 18:00:10,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 73. [2024-09-12 18:00:10,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 58 states have (on average 1.2586206896551724) internal successors, (73), 64 states have internal predecessors, (73), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-09-12 18:00:10,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 82 transitions. [2024-09-12 18:00:10,821 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 82 transitions. Word has length 19 [2024-09-12 18:00:10,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:00:10,821 INFO L474 AbstractCegarLoop]: Abstraction has 73 states and 82 transitions. [2024-09-12 18:00:10,821 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-12 18:00:10,822 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:00:10,822 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 82 transitions. [2024-09-12 18:00:10,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-09-12 18:00:10,823 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:00:10,823 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:00:10,823 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-09-12 18:00:10,823 INFO L399 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2024-09-12 18:00:10,823 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:00:10,823 INFO L85 PathProgramCache]: Analyzing trace with hash -1650894548, now seen corresponding path program 1 times [2024-09-12 18:00:10,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:00:10,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271747953] [2024-09-12 18:00:10,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:00:10,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:00:10,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:00:10,852 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:00:10,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:00:10,855 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-12 18:00:10,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:00:10,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:00:10,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:00:10,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271747953] [2024-09-12 18:00:10,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271747953] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 18:00:10,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 18:00:10,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-12 18:00:10,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092832961] [2024-09-12 18:00:10,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 18:00:10,859 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-09-12 18:00:10,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:00:10,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-09-12 18:00:10,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-09-12 18:00:10,860 INFO L87 Difference]: Start difference. First operand 73 states and 82 transitions. Second operand has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-12 18:00:10,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:00:10,889 INFO L93 Difference]: Finished difference Result 89 states and 101 transitions. [2024-09-12 18:00:10,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-12 18:00:10,889 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 20 [2024-09-12 18:00:10,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:00:10,890 INFO L225 Difference]: With dead ends: 89 [2024-09-12 18:00:10,891 INFO L226 Difference]: Without dead ends: 87 [2024-09-12 18:00:10,891 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-09-12 18:00:10,891 INFO L434 NwaCegarLoop]: 29 mSDtfsCounter, 3 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 18:00:10,892 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 84 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 18:00:10,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2024-09-12 18:00:10,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 85. [2024-09-12 18:00:10,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 69 states have (on average 1.2463768115942029) internal successors, (86), 75 states have internal predecessors, (86), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-09-12 18:00:10,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 97 transitions. [2024-09-12 18:00:10,907 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 97 transitions. Word has length 20 [2024-09-12 18:00:10,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:00:10,907 INFO L474 AbstractCegarLoop]: Abstraction has 85 states and 97 transitions. [2024-09-12 18:00:10,907 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-12 18:00:10,908 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:00:10,908 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 97 transitions. [2024-09-12 18:00:10,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-09-12 18:00:10,909 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:00:10,909 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:00:10,909 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-09-12 18:00:10,909 INFO L399 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2024-09-12 18:00:10,909 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:00:10,910 INFO L85 PathProgramCache]: Analyzing trace with hash 1285365828, now seen corresponding path program 1 times [2024-09-12 18:00:10,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:00:10,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922796926] [2024-09-12 18:00:10,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:00:10,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:00:10,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:00:11,119 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:00:11,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:00:11,122 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:00:11,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:00:11,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922796926] [2024-09-12 18:00:11,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922796926] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:00:11,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1816889168] [2024-09-12 18:00:11,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:00:11,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:00:11,123 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:00:11,127 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) [2024-09-12 18:00:11,131 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-09-12 18:00:11,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:00:11,169 INFO L262 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-09-12 18:00:11,170 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:00:11,293 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:00:11,293 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:00:11,577 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:00:11,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1816889168] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:00:11,577 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:00:11,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 21 [2024-09-12 18:00:11,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154753182] [2024-09-12 18:00:11,578 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:00:11,578 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-09-12 18:00:11,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:00:11,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-09-12 18:00:11,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=352, Unknown=0, NotChecked=0, Total=420 [2024-09-12 18:00:11,581 INFO L87 Difference]: Start difference. First operand 85 states and 97 transitions. Second operand has 21 states, 20 states have (on average 1.95) internal successors, (39), 19 states have internal predecessors, (39), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:00:11,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:00:11,947 INFO L93 Difference]: Finished difference Result 106 states and 116 transitions. [2024-09-12 18:00:11,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-09-12 18:00:11,947 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 1.95) internal successors, (39), 19 states have internal predecessors, (39), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2024-09-12 18:00:11,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:00:11,948 INFO L225 Difference]: With dead ends: 106 [2024-09-12 18:00:11,948 INFO L226 Difference]: Without dead ends: 104 [2024-09-12 18:00:11,948 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 31 SyntacticMatches, 3 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=122, Invalid=634, Unknown=0, NotChecked=0, Total=756 [2024-09-12 18:00:11,949 INFO L434 NwaCegarLoop]: 23 mSDtfsCounter, 35 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 299 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 251 SdHoareTripleChecker+Invalid, 311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 18:00:11,949 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 251 Invalid, 311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 299 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 18:00:11,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2024-09-12 18:00:11,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 94. [2024-09-12 18:00:11,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 76 states have (on average 1.2236842105263157) internal successors, (93), 83 states have internal predecessors, (93), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-12 18:00:11,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 106 transitions. [2024-09-12 18:00:11,979 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 106 transitions. Word has length 20 [2024-09-12 18:00:11,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:00:11,979 INFO L474 AbstractCegarLoop]: Abstraction has 94 states and 106 transitions. [2024-09-12 18:00:11,979 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 1.95) internal successors, (39), 19 states have internal predecessors, (39), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:00:11,979 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:00:11,979 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 106 transitions. [2024-09-12 18:00:11,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-09-12 18:00:11,980 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:00:11,980 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:00:11,998 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-09-12 18:00:12,186 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-09-12 18:00:12,187 INFO L399 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2024-09-12 18:00:12,187 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:00:12,187 INFO L85 PathProgramCache]: Analyzing trace with hash -1590189112, now seen corresponding path program 1 times [2024-09-12 18:00:12,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:00:12,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998979210] [2024-09-12 18:00:12,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:00:12,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:00:12,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:00:12,237 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:00:12,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:00:12,239 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-12 18:00:12,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:00:12,242 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:00:12,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:00:12,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998979210] [2024-09-12 18:00:12,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998979210] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:00:12,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [227396610] [2024-09-12 18:00:12,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:00:12,242 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:00:12,243 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:00:12,244 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) [2024-09-12 18:00:12,245 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-09-12 18:00:12,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:00:12,284 INFO L262 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-09-12 18:00:12,285 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:00:12,326 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:00:12,326 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:00:12,396 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:00:12,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [227396610] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:00:12,396 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:00:12,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 12 [2024-09-12 18:00:12,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951328187] [2024-09-12 18:00:12,397 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:00:12,397 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-09-12 18:00:12,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:00:12,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-09-12 18:00:12,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-09-12 18:00:12,398 INFO L87 Difference]: Start difference. First operand 94 states and 106 transitions. Second operand has 13 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 13 states have internal predecessors, (37), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-12 18:00:12,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:00:12,544 INFO L93 Difference]: Finished difference Result 113 states and 130 transitions. [2024-09-12 18:00:12,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-09-12 18:00:12,547 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 13 states have internal predecessors, (37), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 23 [2024-09-12 18:00:12,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:00:12,548 INFO L225 Difference]: With dead ends: 113 [2024-09-12 18:00:12,548 INFO L226 Difference]: Without dead ends: 112 [2024-09-12 18:00:12,548 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2024-09-12 18:00:12,549 INFO L434 NwaCegarLoop]: 34 mSDtfsCounter, 8 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 248 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 18:00:12,549 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 248 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 18:00:12,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2024-09-12 18:00:12,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2024-09-12 18:00:12,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 92 states have (on average 1.1956521739130435) internal successors, (110), 98 states have internal predecessors, (110), 9 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-09-12 18:00:12,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 127 transitions. [2024-09-12 18:00:12,588 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 127 transitions. Word has length 23 [2024-09-12 18:00:12,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:00:12,589 INFO L474 AbstractCegarLoop]: Abstraction has 112 states and 127 transitions. [2024-09-12 18:00:12,589 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 13 states have internal predecessors, (37), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-12 18:00:12,589 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:00:12,590 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 127 transitions. [2024-09-12 18:00:12,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-09-12 18:00:12,590 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:00:12,590 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:00:12,613 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-09-12 18:00:12,792 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-09-12 18:00:12,793 INFO L399 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2024-09-12 18:00:12,794 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:00:12,794 INFO L85 PathProgramCache]: Analyzing trace with hash -2051222137, now seen corresponding path program 1 times [2024-09-12 18:00:12,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:00:12,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241305311] [2024-09-12 18:00:12,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:00:12,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:00:12,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:00:12,887 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:00:12,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:00:12,889 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-12 18:00:12,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:00:12,894 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:00:12,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:00:12,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241305311] [2024-09-12 18:00:12,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241305311] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:00:12,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [131104743] [2024-09-12 18:00:12,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:00:12,895 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:00:12,895 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:00:12,896 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) [2024-09-12 18:00:12,898 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-09-12 18:00:12,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:00:12,928 INFO L262 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-09-12 18:00:12,929 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:00:12,979 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:00:12,979 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-12 18:00:12,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [131104743] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 18:00:12,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-12 18:00:12,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 11 [2024-09-12 18:00:12,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604505842] [2024-09-12 18:00:12,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 18:00:12,980 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-12 18:00:12,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:00:12,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-12 18:00:12,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-09-12 18:00:12,981 INFO L87 Difference]: Start difference. First operand 112 states and 127 transitions. Second operand has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-12 18:00:13,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:00:13,027 INFO L93 Difference]: Finished difference Result 114 states and 127 transitions. [2024-09-12 18:00:13,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-12 18:00:13,028 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 24 [2024-09-12 18:00:13,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:00:13,030 INFO L225 Difference]: With dead ends: 114 [2024-09-12 18:00:13,030 INFO L226 Difference]: Without dead ends: 113 [2024-09-12 18:00:13,031 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-09-12 18:00:13,031 INFO L434 NwaCegarLoop]: 38 mSDtfsCounter, 15 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 136 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 [2024-09-12 18:00:13,032 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 136 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 18:00:13,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2024-09-12 18:00:13,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 97. [2024-09-12 18:00:13,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 79 states have (on average 1.1518987341772151) internal successors, (91), 85 states have internal predecessors, (91), 8 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2024-09-12 18:00:13,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 106 transitions. [2024-09-12 18:00:13,049 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 106 transitions. Word has length 24 [2024-09-12 18:00:13,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:00:13,050 INFO L474 AbstractCegarLoop]: Abstraction has 97 states and 106 transitions. [2024-09-12 18:00:13,050 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-12 18:00:13,050 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:00:13,050 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 106 transitions. [2024-09-12 18:00:13,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-09-12 18:00:13,052 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:00:13,052 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:00:13,067 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-09-12 18:00:13,253 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-09-12 18:00:13,254 INFO L399 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2024-09-12 18:00:13,254 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:00:13,254 INFO L85 PathProgramCache]: Analyzing trace with hash 76488308, now seen corresponding path program 1 times [2024-09-12 18:00:13,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:00:13,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606025204] [2024-09-12 18:00:13,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:00:13,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:00:13,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:00:13,437 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:00:13,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:00:13,439 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-12 18:00:13,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:00:13,446 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:00:13,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:00:13,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606025204] [2024-09-12 18:00:13,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606025204] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:00:13,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [416345519] [2024-09-12 18:00:13,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:00:13,447 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:00:13,447 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:00:13,451 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) [2024-09-12 18:00:13,454 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-09-12 18:00:13,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:00:13,499 INFO L262 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-09-12 18:00:13,500 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:00:13,553 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:00:13,558 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-12 18:00:13,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [416345519] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 18:00:13,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-12 18:00:13,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 13 [2024-09-12 18:00:13,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405413398] [2024-09-12 18:00:13,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 18:00:13,559 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-12 18:00:13,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:00:13,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-12 18:00:13,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-09-12 18:00:13,560 INFO L87 Difference]: Start difference. First operand 97 states and 106 transitions. Second operand has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-12 18:00:13,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:00:13,633 INFO L93 Difference]: Finished difference Result 120 states and 129 transitions. [2024-09-12 18:00:13,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-12 18:00:13,634 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 28 [2024-09-12 18:00:13,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:00:13,635 INFO L225 Difference]: With dead ends: 120 [2024-09-12 18:00:13,635 INFO L226 Difference]: Without dead ends: 88 [2024-09-12 18:00:13,635 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-09-12 18:00:13,636 INFO L434 NwaCegarLoop]: 27 mSDtfsCounter, 0 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 18:00:13,636 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 115 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 18:00:13,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2024-09-12 18:00:13,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2024-09-12 18:00:13,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 72 states have (on average 1.1527777777777777) internal successors, (83), 77 states have internal predecessors, (83), 7 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-12 18:00:13,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 96 transitions. [2024-09-12 18:00:13,650 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 96 transitions. Word has length 28 [2024-09-12 18:00:13,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:00:13,651 INFO L474 AbstractCegarLoop]: Abstraction has 88 states and 96 transitions. [2024-09-12 18:00:13,651 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-12 18:00:13,655 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:00:13,655 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 96 transitions. [2024-09-12 18:00:13,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-09-12 18:00:13,656 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:00:13,656 INFO L216 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:00:13,676 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-09-12 18:00:13,856 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,9 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:00:13,857 INFO L399 AbstractCegarLoop]: === Iteration 17 === Targeting mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2024-09-12 18:00:13,857 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:00:13,857 INFO L85 PathProgramCache]: Analyzing trace with hash -1156975859, now seen corresponding path program 2 times [2024-09-12 18:00:13,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:00:13,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552608350] [2024-09-12 18:00:13,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:00:13,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:00:13,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:00:14,047 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:00:14,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:00:14,051 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 18 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:00:14,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:00:14,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552608350] [2024-09-12 18:00:14,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552608350] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:00:14,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [277368322] [2024-09-12 18:00:14,051 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 18:00:14,052 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:00:14,052 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:00:14,055 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) [2024-09-12 18:00:14,056 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-09-12 18:00:14,091 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 18:00:14,091 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 18:00:14,092 INFO L262 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-09-12 18:00:14,093 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:00:14,328 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:00:14,328 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:00:14,604 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:00:14,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [277368322] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:00:14,605 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:00:14,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14, 14] total 39 [2024-09-12 18:00:14,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390249105] [2024-09-12 18:00:14,605 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:00:14,605 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-09-12 18:00:14,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:00:14,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-09-12 18:00:14,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=270, Invalid=1290, Unknown=0, NotChecked=0, Total=1560 [2024-09-12 18:00:14,607 INFO L87 Difference]: Start difference. First operand 88 states and 96 transitions. Second operand has 40 states, 39 states have (on average 1.8205128205128205) internal successors, (71), 40 states have internal predecessors, (71), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:00:15,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:00:15,074 INFO L93 Difference]: Finished difference Result 94 states and 103 transitions. [2024-09-12 18:00:15,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-09-12 18:00:15,075 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 39 states have (on average 1.8205128205128205) internal successors, (71), 40 states have internal predecessors, (71), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 28 [2024-09-12 18:00:15,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:00:15,076 INFO L225 Difference]: With dead ends: 94 [2024-09-12 18:00:15,076 INFO L226 Difference]: Without dead ends: 93 [2024-09-12 18:00:15,077 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 790 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=444, Invalid=2312, Unknown=0, NotChecked=0, Total=2756 [2024-09-12 18:00:15,078 INFO L434 NwaCegarLoop]: 29 mSDtfsCounter, 45 mSDsluCounter, 253 mSDsCounter, 0 mSdLazyCounter, 497 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 282 SdHoareTripleChecker+Invalid, 519 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 497 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-12 18:00:15,078 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 282 Invalid, 519 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 497 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-12 18:00:15,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2024-09-12 18:00:15,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 87. [2024-09-12 18:00:15,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 72 states have (on average 1.1388888888888888) internal successors, (82), 76 states have internal predecessors, (82), 7 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-12 18:00:15,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 95 transitions. [2024-09-12 18:00:15,096 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 95 transitions. Word has length 28 [2024-09-12 18:00:15,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:00:15,096 INFO L474 AbstractCegarLoop]: Abstraction has 87 states and 95 transitions. [2024-09-12 18:00:15,096 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 39 states have (on average 1.8205128205128205) internal successors, (71), 40 states have internal predecessors, (71), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:00:15,097 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:00:15,097 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 95 transitions. [2024-09-12 18:00:15,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-09-12 18:00:15,097 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:00:15,097 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:00:15,119 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-09-12 18:00:15,298 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-09-12 18:00:15,298 INFO L399 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2024-09-12 18:00:15,299 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:00:15,299 INFO L85 PathProgramCache]: Analyzing trace with hash 69271300, now seen corresponding path program 2 times [2024-09-12 18:00:15,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:00:15,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255391552] [2024-09-12 18:00:15,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:00:15,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:00:15,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:00:15,451 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:00:15,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:00:15,453 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:00:15,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:00:15,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255391552] [2024-09-12 18:00:15,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255391552] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:00:15,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1419881200] [2024-09-12 18:00:15,454 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 18:00:15,454 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:00:15,454 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:00:15,455 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) [2024-09-12 18:00:15,457 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-09-12 18:00:15,494 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 18:00:15,494 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 18:00:15,495 INFO L262 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-09-12 18:00:15,496 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:00:15,676 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:00:15,676 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:00:15,877 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:00:15,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1419881200] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:00:15,878 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:00:15,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 31 [2024-09-12 18:00:15,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410595638] [2024-09-12 18:00:15,878 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:00:15,879 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-09-12 18:00:15,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:00:15,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-09-12 18:00:15,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=789, Unknown=0, NotChecked=0, Total=930 [2024-09-12 18:00:15,880 INFO L87 Difference]: Start difference. First operand 87 states and 95 transitions. Second operand has 31 states, 31 states have (on average 1.967741935483871) internal successors, (61), 29 states have internal predecessors, (61), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:00:16,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:00:16,216 INFO L93 Difference]: Finished difference Result 97 states and 103 transitions. [2024-09-12 18:00:16,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-09-12 18:00:16,216 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 1.967741935483871) internal successors, (61), 29 states have internal predecessors, (61), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 30 [2024-09-12 18:00:16,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:00:16,217 INFO L225 Difference]: With dead ends: 97 [2024-09-12 18:00:16,217 INFO L226 Difference]: Without dead ends: 95 [2024-09-12 18:00:16,218 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 312 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=207, Invalid=1199, Unknown=0, NotChecked=0, Total=1406 [2024-09-12 18:00:16,218 INFO L434 NwaCegarLoop]: 35 mSDtfsCounter, 4 mSDsluCounter, 270 mSDsCounter, 0 mSdLazyCounter, 405 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 305 SdHoareTripleChecker+Invalid, 408 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 405 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 18:00:16,218 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 305 Invalid, 408 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 405 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 18:00:16,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2024-09-12 18:00:16,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2024-09-12 18:00:16,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 78 states have (on average 1.1282051282051282) internal successors, (88), 82 states have internal predecessors, (88), 7 states have call successors, (7), 6 states have call predecessors, (7), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-12 18:00:16,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 101 transitions. [2024-09-12 18:00:16,260 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 101 transitions. Word has length 30 [2024-09-12 18:00:16,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:00:16,264 INFO L474 AbstractCegarLoop]: Abstraction has 95 states and 101 transitions. [2024-09-12 18:00:16,265 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 1.967741935483871) internal successors, (61), 29 states have internal predecessors, (61), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:00:16,265 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:00:16,265 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 101 transitions. [2024-09-12 18:00:16,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-09-12 18:00:16,265 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:00:16,265 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:00:16,290 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-09-12 18:00:16,466 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-09-12 18:00:16,466 INFO L399 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2024-09-12 18:00:16,467 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:00:16,467 INFO L85 PathProgramCache]: Analyzing trace with hash -824163598, now seen corresponding path program 1 times [2024-09-12 18:00:16,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:00:16,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105130534] [2024-09-12 18:00:16,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:00:16,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:00:16,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:00:16,673 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:00:16,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:00:16,677 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-12 18:00:16,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:00:16,681 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:00:16,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:00:16,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105130534] [2024-09-12 18:00:16,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105130534] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:00:16,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1181313345] [2024-09-12 18:00:16,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:00:16,681 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:00:16,681 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:00:16,684 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) [2024-09-12 18:00:16,689 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-09-12 18:00:16,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:00:16,725 INFO L262 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-09-12 18:00:16,726 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:00:16,858 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:00:16,858 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:00:17,153 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:00:17,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1181313345] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:00:17,154 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:00:17,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 21 [2024-09-12 18:00:17,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949013608] [2024-09-12 18:00:17,154 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:00:17,154 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-09-12 18:00:17,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:00:17,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-09-12 18:00:17,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=320, Unknown=0, NotChecked=0, Total=420 [2024-09-12 18:00:17,155 INFO L87 Difference]: Start difference. First operand 95 states and 101 transitions. Second operand has 21 states, 21 states have (on average 2.9047619047619047) internal successors, (61), 21 states have internal predecessors, (61), 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) [2024-09-12 18:00:17,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:00:17,319 INFO L93 Difference]: Finished difference Result 113 states and 119 transitions. [2024-09-12 18:00:17,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-09-12 18:00:17,320 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.9047619047619047) internal successors, (61), 21 states have internal predecessors, (61), 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 33 [2024-09-12 18:00:17,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:00:17,321 INFO L225 Difference]: With dead ends: 113 [2024-09-12 18:00:17,321 INFO L226 Difference]: Without dead ends: 75 [2024-09-12 18:00:17,321 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 58 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=121, Invalid=385, Unknown=0, NotChecked=0, Total=506 [2024-09-12 18:00:17,321 INFO L434 NwaCegarLoop]: 20 mSDtfsCounter, 11 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 18:00:17,322 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 199 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 18:00:17,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2024-09-12 18:00:17,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2024-09-12 18:00:17,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 61 states have (on average 1.1475409836065573) internal successors, (70), 65 states have internal predecessors, (70), 5 states have call successors, (5), 5 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-09-12 18:00:17,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 79 transitions. [2024-09-12 18:00:17,332 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 79 transitions. Word has length 33 [2024-09-12 18:00:17,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:00:17,332 INFO L474 AbstractCegarLoop]: Abstraction has 75 states and 79 transitions. [2024-09-12 18:00:17,332 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.9047619047619047) internal successors, (61), 21 states have internal predecessors, (61), 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) [2024-09-12 18:00:17,332 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:00:17,332 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 79 transitions. [2024-09-12 18:00:17,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-09-12 18:00:17,333 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:00:17,333 INFO L216 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:00:17,346 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-09-12 18:00:17,536 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:00:17,537 INFO L399 AbstractCegarLoop]: === Iteration 20 === Targeting mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2024-09-12 18:00:17,537 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:00:17,537 INFO L85 PathProgramCache]: Analyzing trace with hash -355213367, now seen corresponding path program 2 times [2024-09-12 18:00:17,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:00:17,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766429326] [2024-09-12 18:00:17,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:00:17,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:00:17,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:00:17,557 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:00:17,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:00:17,559 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-09-12 18:00:17,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:00:17,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766429326] [2024-09-12 18:00:17,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766429326] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:00:17,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [821436126] [2024-09-12 18:00:17,560 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 18:00:17,560 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:00:17,560 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:00:17,562 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) [2024-09-12 18:00:17,564 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-09-12 18:00:17,589 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-09-12 18:00:17,589 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 18:00:17,589 INFO L262 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-09-12 18:00:17,594 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:00:17,621 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-09-12 18:00:17,621 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:00:17,650 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-09-12 18:00:17,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [821436126] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:00:17,650 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:00:17,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2024-09-12 18:00:17,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150838867] [2024-09-12 18:00:17,650 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:00:17,651 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-12 18:00:17,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:00:17,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-12 18:00:17,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-12 18:00:17,651 INFO L87 Difference]: Start difference. First operand 75 states and 79 transitions. Second operand has 6 states, 5 states have (on average 4.8) internal successors, (24), 6 states have internal predecessors, (24), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:00:17,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:00:17,701 INFO L93 Difference]: Finished difference Result 75 states and 79 transitions. [2024-09-12 18:00:17,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-12 18:00:17,702 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.8) internal successors, (24), 6 states have internal predecessors, (24), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 31 [2024-09-12 18:00:17,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:00:17,703 INFO L225 Difference]: With dead ends: 75 [2024-09-12 18:00:17,703 INFO L226 Difference]: Without dead ends: 74 [2024-09-12 18:00:17,703 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-09-12 18:00:17,704 INFO L434 NwaCegarLoop]: 23 mSDtfsCounter, 26 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 18:00:17,704 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 51 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 18:00:17,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2024-09-12 18:00:17,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 65. [2024-09-12 18:00:17,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 52 states have (on average 1.1346153846153846) internal successors, (59), 55 states have internal predecessors, (59), 5 states have call successors, (5), 5 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-09-12 18:00:17,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 68 transitions. [2024-09-12 18:00:17,718 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 68 transitions. Word has length 31 [2024-09-12 18:00:17,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:00:17,718 INFO L474 AbstractCegarLoop]: Abstraction has 65 states and 68 transitions. [2024-09-12 18:00:17,718 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.8) internal successors, (24), 6 states have internal predecessors, (24), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:00:17,719 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:00:17,719 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 68 transitions. [2024-09-12 18:00:17,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-09-12 18:00:17,719 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:00:17,719 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:00:17,738 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-09-12 18:00:17,920 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable19 [2024-09-12 18:00:17,921 INFO L399 AbstractCegarLoop]: === Iteration 21 === Targeting mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2024-09-12 18:00:17,921 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:00:17,921 INFO L85 PathProgramCache]: Analyzing trace with hash 2081836296, now seen corresponding path program 2 times [2024-09-12 18:00:17,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:00:17,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096679160] [2024-09-12 18:00:17,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:00:17,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:00:17,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:00:18,048 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:00:18,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:00:18,052 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-09-12 18:00:18,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:00:18,054 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:00:18,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:00:18,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096679160] [2024-09-12 18:00:18,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096679160] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:00:18,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [416319218] [2024-09-12 18:00:18,054 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 18:00:18,055 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:00:18,055 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:00:18,057 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) [2024-09-12 18:00:18,059 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-09-12 18:00:18,088 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-09-12 18:00:18,089 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 18:00:18,090 INFO L262 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-09-12 18:00:18,090 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:00:18,131 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-09-12 18:00:18,131 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-12 18:00:18,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [416319218] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 18:00:18,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-12 18:00:18,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 15 [2024-09-12 18:00:18,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611186581] [2024-09-12 18:00:18,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 18:00:18,132 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-12 18:00:18,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:00:18,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-12 18:00:18,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2024-09-12 18:00:18,133 INFO L87 Difference]: Start difference. First operand 65 states and 68 transitions. Second operand has 6 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-12 18:00:18,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:00:18,164 INFO L93 Difference]: Finished difference Result 65 states and 68 transitions. [2024-09-12 18:00:18,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-12 18:00:18,165 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 33 [2024-09-12 18:00:18,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:00:18,165 INFO L225 Difference]: With dead ends: 65 [2024-09-12 18:00:18,165 INFO L226 Difference]: Without dead ends: 64 [2024-09-12 18:00:18,166 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2024-09-12 18:00:18,166 INFO L434 NwaCegarLoop]: 23 mSDtfsCounter, 1 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 18:00:18,166 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 106 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 18:00:18,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2024-09-12 18:00:18,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 48. [2024-09-12 18:00:18,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 38 states have (on average 1.105263157894737) internal successors, (42), 40 states have internal predecessors, (42), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-12 18:00:18,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 49 transitions. [2024-09-12 18:00:18,176 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 49 transitions. Word has length 33 [2024-09-12 18:00:18,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:00:18,176 INFO L474 AbstractCegarLoop]: Abstraction has 48 states and 49 transitions. [2024-09-12 18:00:18,176 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-12 18:00:18,177 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:00:18,177 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 49 transitions. [2024-09-12 18:00:18,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-09-12 18:00:18,178 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:00:18,178 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:00:18,191 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-09-12 18:00:18,378 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,14 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:00:18,378 INFO L399 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2024-09-12 18:00:18,379 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:00:18,379 INFO L85 PathProgramCache]: Analyzing trace with hash 346570036, now seen corresponding path program 2 times [2024-09-12 18:00:18,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:00:18,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759925944] [2024-09-12 18:00:18,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:00:18,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:00:18,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:00:18,761 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:00:18,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:00:18,764 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-12 18:00:18,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:00:18,773 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:00:18,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:00:18,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759925944] [2024-09-12 18:00:18,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759925944] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:00:18,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2094188732] [2024-09-12 18:00:18,773 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 18:00:18,774 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:00:18,774 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:00:18,776 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) [2024-09-12 18:00:18,777 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-09-12 18:00:18,815 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 18:00:18,816 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 18:00:18,817 INFO L262 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-09-12 18:00:18,818 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:00:19,073 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:00:19,073 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:00:19,678 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:00:19,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2094188732] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:00:19,678 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:00:19,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 15, 15] total 36 [2024-09-12 18:00:19,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803965739] [2024-09-12 18:00:19,679 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:00:19,679 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-09-12 18:00:19,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:00:19,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-09-12 18:00:19,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=1122, Unknown=0, NotChecked=0, Total=1260 [2024-09-12 18:00:19,681 INFO L87 Difference]: Start difference. First operand 48 states and 49 transitions. Second operand has 36 states, 35 states have (on average 2.1714285714285713) internal successors, (76), 34 states have internal predecessors, (76), 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) [2024-09-12 18:00:20,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:00:20,205 INFO L93 Difference]: Finished difference Result 102 states and 109 transitions. [2024-09-12 18:00:20,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-09-12 18:00:20,207 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 35 states have (on average 2.1714285714285713) internal successors, (76), 34 states have internal predecessors, (76), 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 38 [2024-09-12 18:00:20,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:00:20,208 INFO L225 Difference]: With dead ends: 102 [2024-09-12 18:00:20,208 INFO L226 Difference]: Without dead ends: 100 [2024-09-12 18:00:20,209 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 59 SyntacticMatches, 3 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 365 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=193, Invalid=1699, Unknown=0, NotChecked=0, Total=1892 [2024-09-12 18:00:20,209 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 14 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 616 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 622 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 616 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-12 18:00:20,209 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 165 Invalid, 622 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 616 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-12 18:00:20,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2024-09-12 18:00:20,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 99. [2024-09-12 18:00:20,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 83 states have (on average 1.0963855421686748) internal successors, (91), 86 states have internal predecessors, (91), 8 states have call successors, (8), 6 states have call predecessors, (8), 5 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2024-09-12 18:00:20,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 106 transitions. [2024-09-12 18:00:20,227 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 106 transitions. Word has length 38 [2024-09-12 18:00:20,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:00:20,227 INFO L474 AbstractCegarLoop]: Abstraction has 99 states and 106 transitions. [2024-09-12 18:00:20,227 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 35 states have (on average 2.1714285714285713) internal successors, (76), 34 states have internal predecessors, (76), 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) [2024-09-12 18:00:20,228 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:00:20,228 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 106 transitions. [2024-09-12 18:00:20,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-09-12 18:00:20,228 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:00:20,228 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:00:20,240 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-09-12 18:00:20,432 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-09-12 18:00:20,433 INFO L399 AbstractCegarLoop]: === Iteration 23 === Targeting mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2024-09-12 18:00:20,433 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:00:20,433 INFO L85 PathProgramCache]: Analyzing trace with hash 435115194, now seen corresponding path program 1 times [2024-09-12 18:00:20,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:00:20,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583519085] [2024-09-12 18:00:20,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:00:20,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:00:20,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:00:20,506 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:00:20,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:00:20,508 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-12 18:00:20,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:00:20,511 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-12 18:00:20,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:00:20,514 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-09-12 18:00:20,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:00:20,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583519085] [2024-09-12 18:00:20,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583519085] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:00:20,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [994680798] [2024-09-12 18:00:20,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:00:20,514 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:00:20,514 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:00:20,516 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) [2024-09-12 18:00:20,517 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-09-12 18:00:20,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:00:20,549 INFO L262 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-09-12 18:00:20,550 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:00:20,578 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-09-12 18:00:20,578 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-12 18:00:20,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [994680798] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 18:00:20,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-12 18:00:20,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-09-12 18:00:20,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002008017] [2024-09-12 18:00:20,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 18:00:20,579 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-12 18:00:20,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:00:20,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-12 18:00:20,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-09-12 18:00:20,580 INFO L87 Difference]: Start difference. First operand 99 states and 106 transitions. Second operand has 6 states, 5 states have (on average 5.6) internal successors, (28), 6 states have internal predecessors, (28), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-12 18:00:20,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:00:20,625 INFO L93 Difference]: Finished difference Result 99 states and 106 transitions. [2024-09-12 18:00:20,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-12 18:00:20,625 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.6) internal successors, (28), 6 states have internal predecessors, (28), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 43 [2024-09-12 18:00:20,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:00:20,626 INFO L225 Difference]: With dead ends: 99 [2024-09-12 18:00:20,626 INFO L226 Difference]: Without dead ends: 98 [2024-09-12 18:00:20,627 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-09-12 18:00:20,627 INFO L434 NwaCegarLoop]: 29 mSDtfsCounter, 1 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 18:00:20,628 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 109 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 18:00:20,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2024-09-12 18:00:20,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2024-09-12 18:00:20,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 83 states have (on average 1.072289156626506) internal successors, (89), 85 states have internal predecessors, (89), 8 states have call successors, (8), 6 states have call predecessors, (8), 5 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2024-09-12 18:00:20,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 104 transitions. [2024-09-12 18:00:20,655 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 104 transitions. Word has length 43 [2024-09-12 18:00:20,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:00:20,655 INFO L474 AbstractCegarLoop]: Abstraction has 98 states and 104 transitions. [2024-09-12 18:00:20,656 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.6) internal successors, (28), 6 states have internal predecessors, (28), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-12 18:00:20,656 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:00:20,656 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 104 transitions. [2024-09-12 18:00:20,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-09-12 18:00:20,656 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:00:20,657 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:00:20,677 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-09-12 18:00:20,857 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-09-12 18:00:20,858 INFO L399 AbstractCegarLoop]: === Iteration 24 === Targeting mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2024-09-12 18:00:20,858 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:00:20,859 INFO L85 PathProgramCache]: Analyzing trace with hash 603669209, now seen corresponding path program 1 times [2024-09-12 18:00:20,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:00:20,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344090326] [2024-09-12 18:00:20,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:00:20,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:00:20,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:00:20,917 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:00:20,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:00:20,919 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-12 18:00:20,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:00:20,922 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-12 18:00:20,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:00:20,924 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-09-12 18:00:20,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:00:20,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344090326] [2024-09-12 18:00:20,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344090326] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:00:20,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1657095951] [2024-09-12 18:00:20,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:00:20,925 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:00:20,925 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:00:20,927 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) [2024-09-12 18:00:20,938 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-09-12 18:00:20,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:00:20,977 INFO L262 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-09-12 18:00:20,977 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:00:21,010 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-09-12 18:00:21,010 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:00:21,064 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-09-12 18:00:21,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1657095951] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:00:21,065 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:00:21,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-09-12 18:00:21,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414353105] [2024-09-12 18:00:21,065 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:00:21,066 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-09-12 18:00:21,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:00:21,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-09-12 18:00:21,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-09-12 18:00:21,066 INFO L87 Difference]: Start difference. First operand 98 states and 104 transitions. Second operand has 12 states, 11 states have (on average 5.0) internal successors, (55), 12 states have internal predecessors, (55), 6 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-12 18:00:21,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:00:21,136 INFO L93 Difference]: Finished difference Result 130 states and 142 transitions. [2024-09-12 18:00:21,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-09-12 18:00:21,136 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 5.0) internal successors, (55), 12 states have internal predecessors, (55), 6 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 44 [2024-09-12 18:00:21,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:00:21,140 INFO L225 Difference]: With dead ends: 130 [2024-09-12 18:00:21,140 INFO L226 Difference]: Without dead ends: 129 [2024-09-12 18:00:21,140 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-09-12 18:00:21,141 INFO L434 NwaCegarLoop]: 24 mSDtfsCounter, 0 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 18:00:21,141 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 141 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 18:00:21,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2024-09-12 18:00:21,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2024-09-12 18:00:21,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 110 states have (on average 1.0454545454545454) internal successors, (115), 113 states have internal predecessors, (115), 12 states have call successors, (12), 6 states have call predecessors, (12), 5 states have return successors, (11), 9 states have call predecessors, (11), 11 states have call successors, (11) [2024-09-12 18:00:21,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 138 transitions. [2024-09-12 18:00:21,182 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 138 transitions. Word has length 44 [2024-09-12 18:00:21,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:00:21,183 INFO L474 AbstractCegarLoop]: Abstraction has 129 states and 138 transitions. [2024-09-12 18:00:21,183 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 5.0) internal successors, (55), 12 states have internal predecessors, (55), 6 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-12 18:00:21,183 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:00:21,183 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 138 transitions. [2024-09-12 18:00:21,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-09-12 18:00:21,184 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:00:21,184 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:00:21,205 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-09-12 18:00:21,385 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,17 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:00:21,385 INFO L399 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2024-09-12 18:00:21,386 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:00:21,386 INFO L85 PathProgramCache]: Analyzing trace with hash 301591540, now seen corresponding path program 3 times [2024-09-12 18:00:21,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:00:21,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629964808] [2024-09-12 18:00:21,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:00:21,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:00:21,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:00:21,667 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:00:21,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:00:21,669 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-09-12 18:00:21,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:00:21,671 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 9 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:00:21,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:00:21,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629964808] [2024-09-12 18:00:21,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629964808] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:00:21,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [892267121] [2024-09-12 18:00:21,673 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-12 18:00:21,673 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:00:21,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:00:21,675 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) [2024-09-12 18:00:21,679 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-09-12 18:00:21,714 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-09-12 18:00:21,715 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 18:00:21,716 INFO L262 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-09-12 18:00:21,717 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:00:21,976 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 1 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:00:21,977 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:00:22,365 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 1 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:00:22,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [892267121] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:00:22,366 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:00:22,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 20, 20] total 45 [2024-09-12 18:00:22,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83387313] [2024-09-12 18:00:22,366 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:00:22,366 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2024-09-12 18:00:22,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:00:22,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2024-09-12 18:00:22,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=1749, Unknown=0, NotChecked=0, Total=1980 [2024-09-12 18:00:22,367 INFO L87 Difference]: Start difference. First operand 129 states and 138 transitions. Second operand has 45 states, 45 states have (on average 2.2222222222222223) internal successors, (100), 44 states have internal predecessors, (100), 5 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-09-12 18:00:22,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:00:22,807 INFO L93 Difference]: Finished difference Result 148 states and 156 transitions. [2024-09-12 18:00:22,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-09-12 18:00:22,808 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 2.2222222222222223) internal successors, (100), 44 states have internal predecessors, (100), 5 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 48 [2024-09-12 18:00:22,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:00:22,809 INFO L225 Difference]: With dead ends: 148 [2024-09-12 18:00:22,810 INFO L226 Difference]: Without dead ends: 146 [2024-09-12 18:00:22,811 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 73 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 755 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=323, Invalid=2329, Unknown=0, NotChecked=0, Total=2652 [2024-09-12 18:00:22,811 INFO L434 NwaCegarLoop]: 33 mSDtfsCounter, 11 mSDsluCounter, 464 mSDsCounter, 0 mSdLazyCounter, 897 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 497 SdHoareTripleChecker+Invalid, 901 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 897 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-12 18:00:22,811 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 497 Invalid, 901 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 897 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-12 18:00:22,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2024-09-12 18:00:22,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 124. [2024-09-12 18:00:22,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 105 states have (on average 1.0476190476190477) internal successors, (110), 108 states have internal predecessors, (110), 11 states have call successors, (11), 7 states have call predecessors, (11), 6 states have return successors, (10), 8 states have call predecessors, (10), 10 states have call successors, (10) [2024-09-12 18:00:22,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 131 transitions. [2024-09-12 18:00:22,859 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 131 transitions. Word has length 48 [2024-09-12 18:00:22,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:00:22,860 INFO L474 AbstractCegarLoop]: Abstraction has 124 states and 131 transitions. [2024-09-12 18:00:22,860 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 2.2222222222222223) internal successors, (100), 44 states have internal predecessors, (100), 5 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-09-12 18:00:22,860 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:00:22,860 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 131 transitions. [2024-09-12 18:00:22,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-09-12 18:00:22,861 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:00:22,861 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:00:22,874 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-09-12 18:00:23,061 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,18 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:00:23,062 INFO L399 AbstractCegarLoop]: === Iteration 26 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2024-09-12 18:00:23,062 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:00:23,062 INFO L85 PathProgramCache]: Analyzing trace with hash 505043396, now seen corresponding path program 4 times [2024-09-12 18:00:23,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:00:23,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568868068] [2024-09-12 18:00:23,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:00:23,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:00:23,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:00:23,535 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:00:23,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:00:23,538 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-09-12 18:00:23,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:00:23,543 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-12 18:00:23,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:00:23,548 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 7 proven. 32 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-12 18:00:23,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:00:23,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568868068] [2024-09-12 18:00:23,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568868068] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:00:23,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1501227654] [2024-09-12 18:00:23,549 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-12 18:00:23,549 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:00:23,549 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:00:23,551 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) [2024-09-12 18:00:23,551 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-09-12 18:00:23,588 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-12 18:00:23,588 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 18:00:23,589 INFO L262 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-09-12 18:00:23,590 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:00:23,942 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 4 proven. 35 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-12 18:00:23,942 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:00:24,731 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 4 proven. 35 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-12 18:00:24,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1501227654] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:00:24,732 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:00:24,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 21, 21] total 51 [2024-09-12 18:00:24,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906259602] [2024-09-12 18:00:24,732 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:00:24,732 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2024-09-12 18:00:24,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:00:24,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2024-09-12 18:00:24,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=232, Invalid=2318, Unknown=0, NotChecked=0, Total=2550 [2024-09-12 18:00:24,733 INFO L87 Difference]: Start difference. First operand 124 states and 131 transitions. Second operand has 51 states, 50 states have (on average 2.2) internal successors, (110), 49 states have internal predecessors, (110), 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) [2024-09-12 18:00:25,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:00:25,749 INFO L93 Difference]: Finished difference Result 196 states and 208 transitions. [2024-09-12 18:00:25,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2024-09-12 18:00:25,749 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 50 states have (on average 2.2) internal successors, (110), 49 states have internal predecessors, (110), 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 56 [2024-09-12 18:00:25,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:00:25,750 INFO L225 Difference]: With dead ends: 196 [2024-09-12 18:00:25,750 INFO L226 Difference]: Without dead ends: 194 [2024-09-12 18:00:25,751 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 90 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 898 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=355, Invalid=3677, Unknown=0, NotChecked=0, Total=4032 [2024-09-12 18:00:25,751 INFO L434 NwaCegarLoop]: 19 mSDtfsCounter, 27 mSDsluCounter, 467 mSDsCounter, 0 mSdLazyCounter, 1792 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 486 SdHoareTripleChecker+Invalid, 1803 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1792 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-09-12 18:00:25,752 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 486 Invalid, 1803 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1792 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-09-12 18:00:25,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2024-09-12 18:00:25,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 192. [2024-09-12 18:00:25,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 165 states have (on average 1.0484848484848486) internal successors, (173), 168 states have internal predecessors, (173), 16 states have call successors, (16), 10 states have call predecessors, (16), 9 states have return successors, (15), 13 states have call predecessors, (15), 15 states have call successors, (15) [2024-09-12 18:00:25,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 204 transitions. [2024-09-12 18:00:25,787 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 204 transitions. Word has length 56 [2024-09-12 18:00:25,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:00:25,788 INFO L474 AbstractCegarLoop]: Abstraction has 192 states and 204 transitions. [2024-09-12 18:00:25,788 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 50 states have (on average 2.2) internal successors, (110), 49 states have internal predecessors, (110), 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) [2024-09-12 18:00:25,788 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:00:25,788 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 204 transitions. [2024-09-12 18:00:25,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-09-12 18:00:25,789 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:00:25,789 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:00:25,801 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-09-12 18:00:25,990 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-09-12 18:00:25,990 INFO L399 AbstractCegarLoop]: === Iteration 27 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2024-09-12 18:00:25,990 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:00:25,990 INFO L85 PathProgramCache]: Analyzing trace with hash 1696807924, now seen corresponding path program 5 times [2024-09-12 18:00:25,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:00:25,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127003381] [2024-09-12 18:00:25,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:00:25,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:00:25,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:00:26,241 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:00:26,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:00:26,243 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-12 18:00:26,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:00:26,247 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-12 18:00:26,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:00:26,251 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-09-12 18:00:26,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:00:26,256 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 24 proven. 28 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-12 18:00:26,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:00:26,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127003381] [2024-09-12 18:00:26,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [127003381] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:00:26,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [599205268] [2024-09-12 18:00:26,257 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-12 18:00:26,257 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:00:26,257 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:00:26,259 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) [2024-09-12 18:00:26,260 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-09-12 18:00:26,297 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-09-12 18:00:26,298 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 18:00:26,299 INFO L262 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-09-12 18:00:26,300 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:00:26,502 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 51 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-12 18:00:26,502 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:00:26,733 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 51 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-12 18:00:26,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [599205268] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:00:26,733 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:00:26,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 16, 16] total 37 [2024-09-12 18:00:26,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628677091] [2024-09-12 18:00:26,734 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:00:26,734 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-09-12 18:00:26,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:00:26,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-09-12 18:00:26,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=1187, Unknown=0, NotChecked=0, Total=1332 [2024-09-12 18:00:26,735 INFO L87 Difference]: Start difference. First operand 192 states and 204 transitions. Second operand has 37 states, 37 states have (on average 2.8378378378378377) internal successors, (105), 37 states have internal predecessors, (105), 8 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-09-12 18:00:27,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:00:27,152 INFO L93 Difference]: Finished difference Result 244 states and 258 transitions. [2024-09-12 18:00:27,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-09-12 18:00:27,153 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 2.8378378378378377) internal successors, (105), 37 states have internal predecessors, (105), 8 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Word has length 64 [2024-09-12 18:00:27,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:00:27,154 INFO L225 Difference]: With dead ends: 244 [2024-09-12 18:00:27,154 INFO L226 Difference]: Without dead ends: 183 [2024-09-12 18:00:27,155 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 110 SyntacticMatches, 5 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 776 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=292, Invalid=2158, Unknown=0, NotChecked=0, Total=2450 [2024-09-12 18:00:27,155 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 24 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 676 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 204 SdHoareTripleChecker+Invalid, 682 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 676 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 18:00:27,155 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 204 Invalid, 682 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 676 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 18:00:27,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2024-09-12 18:00:27,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 183. [2024-09-12 18:00:27,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 158 states have (on average 1.0443037974683544) internal successors, (165), 160 states have internal predecessors, (165), 15 states have call successors, (15), 9 states have call predecessors, (15), 8 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2024-09-12 18:00:27,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 194 transitions. [2024-09-12 18:00:27,199 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 194 transitions. Word has length 64 [2024-09-12 18:00:27,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:00:27,199 INFO L474 AbstractCegarLoop]: Abstraction has 183 states and 194 transitions. [2024-09-12 18:00:27,199 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 2.8378378378378377) internal successors, (105), 37 states have internal predecessors, (105), 8 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-09-12 18:00:27,199 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:00:27,199 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 194 transitions. [2024-09-12 18:00:27,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-09-12 18:00:27,200 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:00:27,200 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:00:27,214 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-09-12 18:00:27,400 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-09-12 18:00:27,401 INFO L399 AbstractCegarLoop]: === Iteration 28 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2024-09-12 18:00:27,401 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:00:27,401 INFO L85 PathProgramCache]: Analyzing trace with hash -2057045324, now seen corresponding path program 6 times [2024-09-12 18:00:27,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:00:27,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223173451] [2024-09-12 18:00:27,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:00:27,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:00:27,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:00:28,077 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:00:28,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:00:28,079 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-09-12 18:00:28,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:00:28,084 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-09-12 18:00:28,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:00:28,087 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-09-12 18:00:28,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:00:28,091 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 21 proven. 58 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-12 18:00:28,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:00:28,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223173451] [2024-09-12 18:00:28,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223173451] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:00:28,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [540195872] [2024-09-12 18:00:28,092 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-12 18:00:28,092 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:00:28,092 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:00:28,093 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) [2024-09-12 18:00:28,094 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-09-12 18:00:28,133 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2024-09-12 18:00:28,133 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 18:00:28,134 INFO L262 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-09-12 18:00:28,135 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:00:28,803 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 5 proven. 80 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-12 18:00:28,803 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:00:30,024 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 5 proven. 80 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-12 18:00:30,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [540195872] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:00:30,024 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:00:30,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 28, 27] total 74 [2024-09-12 18:00:30,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803809259] [2024-09-12 18:00:30,025 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:00:30,025 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2024-09-12 18:00:30,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:00:30,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2024-09-12 18:00:30,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=359, Invalid=5043, Unknown=0, NotChecked=0, Total=5402 [2024-09-12 18:00:30,027 INFO L87 Difference]: Start difference. First operand 183 states and 194 transitions. Second operand has 74 states, 73 states have (on average 2.26027397260274) internal successors, (165), 71 states have internal predecessors, (165), 11 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-09-12 18:00:32,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:00:32,103 INFO L93 Difference]: Finished difference Result 247 states and 260 transitions. [2024-09-12 18:00:32,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2024-09-12 18:00:32,106 INFO L78 Accepts]: Start accepts. Automaton has has 74 states, 73 states have (on average 2.26027397260274) internal successors, (165), 71 states have internal predecessors, (165), 11 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Word has length 74 [2024-09-12 18:00:32,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:00:32,107 INFO L225 Difference]: With dead ends: 247 [2024-09-12 18:00:32,107 INFO L226 Difference]: Without dead ends: 245 [2024-09-12 18:00:32,109 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 111 SyntacticMatches, 1 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2543 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=642, Invalid=9458, Unknown=0, NotChecked=0, Total=10100 [2024-09-12 18:00:32,110 INFO L434 NwaCegarLoop]: 19 mSDtfsCounter, 26 mSDsluCounter, 548 mSDsCounter, 0 mSdLazyCounter, 2556 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 567 SdHoareTripleChecker+Invalid, 2567 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 2556 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-09-12 18:00:32,110 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 567 Invalid, 2567 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 2556 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-09-12 18:00:32,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2024-09-12 18:00:32,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 245. [2024-09-12 18:00:32,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 211 states have (on average 1.037914691943128) internal successors, (219), 213 states have internal predecessors, (219), 20 states have call successors, (20), 13 states have call predecessors, (20), 12 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2024-09-12 18:00:32,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 258 transitions. [2024-09-12 18:00:32,156 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 258 transitions. Word has length 74 [2024-09-12 18:00:32,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:00:32,157 INFO L474 AbstractCegarLoop]: Abstraction has 245 states and 258 transitions. [2024-09-12 18:00:32,157 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 74 states, 73 states have (on average 2.26027397260274) internal successors, (165), 71 states have internal predecessors, (165), 11 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-09-12 18:00:32,157 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:00:32,157 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 258 transitions. [2024-09-12 18:00:32,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-09-12 18:00:32,158 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:00:32,158 INFO L216 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:00:32,177 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2024-09-12 18:00:32,358 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-09-12 18:00:32,358 INFO L399 AbstractCegarLoop]: === Iteration 29 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2024-09-12 18:00:32,359 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:00:32,359 INFO L85 PathProgramCache]: Analyzing trace with hash -378211662, now seen corresponding path program 7 times [2024-09-12 18:00:32,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:00:32,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308791531] [2024-09-12 18:00:32,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:00:32,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:00:32,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:00:32,636 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:00:32,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:00:32,638 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-12 18:00:32,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:00:32,640 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-09-12 18:00:32,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:00:32,641 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-12 18:00:32,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:00:32,643 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 24 proven. 76 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-12 18:00:32,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:00:32,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308791531] [2024-09-12 18:00:32,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308791531] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:00:32,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [57640354] [2024-09-12 18:00:32,644 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-12 18:00:32,644 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:00:32,644 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:00:32,647 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) [2024-09-12 18:00:32,649 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-09-12 18:00:32,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:00:32,688 INFO L262 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-09-12 18:00:32,689 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:00:33,001 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 6 proven. 94 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-12 18:00:33,001 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:00:33,429 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 6 proven. 94 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-12 18:00:33,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [57640354] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:00:33,429 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:00:33,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 25, 25] total 51 [2024-09-12 18:00:33,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026310326] [2024-09-12 18:00:33,429 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:00:33,429 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2024-09-12 18:00:33,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:00:33,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2024-09-12 18:00:33,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=2274, Unknown=0, NotChecked=0, Total=2550 [2024-09-12 18:00:33,431 INFO L87 Difference]: Start difference. First operand 245 states and 258 transitions. Second operand has 51 states, 51 states have (on average 2.1372549019607843) internal successors, (109), 49 states have internal predecessors, (109), 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) [2024-09-12 18:00:33,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:00:33,924 INFO L93 Difference]: Finished difference Result 251 states and 263 transitions. [2024-09-12 18:00:33,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-09-12 18:00:33,924 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 2.1372549019607843) internal successors, (109), 49 states have internal predecessors, (109), 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 79 [2024-09-12 18:00:33,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:00:33,925 INFO L225 Difference]: With dead ends: 251 [2024-09-12 18:00:33,925 INFO L226 Difference]: Without dead ends: 249 [2024-09-12 18:00:33,926 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 131 SyntacticMatches, 10 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1231 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=329, Invalid=2641, Unknown=0, NotChecked=0, Total=2970 [2024-09-12 18:00:33,926 INFO L434 NwaCegarLoop]: 30 mSDtfsCounter, 6 mSDsluCounter, 586 mSDsCounter, 0 mSdLazyCounter, 1069 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 616 SdHoareTripleChecker+Invalid, 1069 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1069 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-12 18:00:33,927 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 616 Invalid, 1069 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1069 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-12 18:00:33,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2024-09-12 18:00:33,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 249. [2024-09-12 18:00:33,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 214 states have (on average 1.0373831775700935) internal successors, (222), 216 states have internal predecessors, (222), 20 states have call successors, (20), 14 states have call predecessors, (20), 13 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2024-09-12 18:00:33,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 261 transitions. [2024-09-12 18:00:33,972 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 261 transitions. Word has length 79 [2024-09-12 18:00:33,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:00:33,973 INFO L474 AbstractCegarLoop]: Abstraction has 249 states and 261 transitions. [2024-09-12 18:00:33,973 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 2.1372549019607843) internal successors, (109), 49 states have internal predecessors, (109), 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) [2024-09-12 18:00:33,973 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:00:33,973 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 261 transitions. [2024-09-12 18:00:33,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-09-12 18:00:33,974 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:00:33,974 INFO L216 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:00:33,986 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2024-09-12 18:00:34,174 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-09-12 18:00:34,175 INFO L399 AbstractCegarLoop]: === Iteration 30 === Targeting mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2024-09-12 18:00:34,175 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:00:34,176 INFO L85 PathProgramCache]: Analyzing trace with hash -272101847, now seen corresponding path program 2 times [2024-09-12 18:00:34,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:00:34,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123636962] [2024-09-12 18:00:34,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:00:34,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:00:34,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:00:34,477 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:00:34,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:00:34,479 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-09-12 18:00:34,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:00:34,481 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-12 18:00:34,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:00:34,484 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-09-12 18:00:34,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:00:34,488 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-09-12 18:00:34,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:00:34,491 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-09-12 18:00:34,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:00:34,492 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 60 proven. 48 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-09-12 18:00:34,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:00:34,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123636962] [2024-09-12 18:00:34,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123636962] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:00:34,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2001218006] [2024-09-12 18:00:34,492 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 18:00:34,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:00:34,493 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:00:34,494 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) [2024-09-12 18:00:34,495 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-09-12 18:00:34,523 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-09-12 18:00:34,523 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 18:00:34,524 INFO L262 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-09-12 18:00:34,525 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:00:34,595 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-09-12 18:00:34,595 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-12 18:00:34,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2001218006] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 18:00:34,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-12 18:00:34,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [18] total 21 [2024-09-12 18:00:34,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42506807] [2024-09-12 18:00:34,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 18:00:34,596 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-12 18:00:34,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:00:34,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-12 18:00:34,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=351, Unknown=0, NotChecked=0, Total=420 [2024-09-12 18:00:34,597 INFO L87 Difference]: Start difference. First operand 249 states and 261 transitions. Second operand has 5 states, 4 states have (on average 7.0) internal successors, (28), 5 states have internal predecessors, (28), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-12 18:00:34,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:00:34,708 INFO L93 Difference]: Finished difference Result 249 states and 261 transitions. [2024-09-12 18:00:34,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-12 18:00:34,709 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 7.0) internal successors, (28), 5 states have internal predecessors, (28), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 88 [2024-09-12 18:00:34,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:00:34,710 INFO L225 Difference]: With dead ends: 249 [2024-09-12 18:00:34,711 INFO L226 Difference]: Without dead ends: 128 [2024-09-12 18:00:34,713 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=81, Invalid=425, Unknown=0, NotChecked=0, Total=506 [2024-09-12 18:00:34,714 INFO L434 NwaCegarLoop]: 18 mSDtfsCounter, 19 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 18:00:34,714 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 59 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 18:00:34,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2024-09-12 18:00:34,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 123. [2024-09-12 18:00:34,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 106 states have (on average 1.028301886792453) internal successors, (109), 108 states have internal predecessors, (109), 10 states have call successors, (10), 7 states have call predecessors, (10), 6 states have return successors, (9), 7 states have call predecessors, (9), 9 states have call successors, (9) [2024-09-12 18:00:34,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 128 transitions. [2024-09-12 18:00:34,742 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 128 transitions. Word has length 88 [2024-09-12 18:00:34,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:00:34,742 INFO L474 AbstractCegarLoop]: Abstraction has 123 states and 128 transitions. [2024-09-12 18:00:34,742 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 7.0) internal successors, (28), 5 states have internal predecessors, (28), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-12 18:00:34,743 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:00:34,743 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 128 transitions. [2024-09-12 18:00:34,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-09-12 18:00:34,744 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:00:34,744 INFO L216 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:00:34,757 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2024-09-12 18:00:34,944 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,23 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:00:34,944 INFO L399 AbstractCegarLoop]: === Iteration 31 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2024-09-12 18:00:34,945 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:00:34,945 INFO L85 PathProgramCache]: Analyzing trace with hash 68834116, now seen corresponding path program 8 times [2024-09-12 18:00:34,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:00:34,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768878737] [2024-09-12 18:00:34,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:00:34,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:00:34,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:00:35,810 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:00:35,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:00:35,811 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-12 18:00:35,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:00:35,815 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-09-12 18:00:35,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:00:35,818 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-12 18:00:35,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:00:35,821 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-12 18:00:35,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:00:35,825 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 44 proven. 89 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-12 18:00:35,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:00:35,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768878737] [2024-09-12 18:00:35,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768878737] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:00:35,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1273243673] [2024-09-12 18:00:35,826 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 18:00:35,826 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:00:35,826 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:00:35,827 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) [2024-09-12 18:00:35,828 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-09-12 18:00:35,875 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 18:00:35,875 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 18:00:35,876 INFO L262 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-09-12 18:00:35,877 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:00:36,516 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 8 proven. 125 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-12 18:00:36,517 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:00:38,230 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 8 proven. 125 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-12 18:00:38,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1273243673] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:00:38,231 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:00:38,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 33, 33] total 81 [2024-09-12 18:00:38,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051308907] [2024-09-12 18:00:38,231 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:00:38,231 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 81 states [2024-09-12 18:00:38,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:00:38,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2024-09-12 18:00:38,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=499, Invalid=5981, Unknown=0, NotChecked=0, Total=6480 [2024-09-12 18:00:38,233 INFO L87 Difference]: Start difference. First operand 123 states and 128 transitions. Second operand has 81 states, 80 states have (on average 2.225) internal successors, (178), 79 states have internal predecessors, (178), 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) [2024-09-12 18:00:40,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:00:40,036 INFO L93 Difference]: Finished difference Result 231 states and 244 transitions. [2024-09-12 18:00:40,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2024-09-12 18:00:40,036 INFO L78 Accepts]: Start accepts. Automaton has has 81 states, 80 states have (on average 2.225) internal successors, (178), 79 states have internal predecessors, (178), 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 92 [2024-09-12 18:00:40,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:00:40,038 INFO L225 Difference]: With dead ends: 231 [2024-09-12 18:00:40,038 INFO L226 Difference]: Without dead ends: 162 [2024-09-12 18:00:40,039 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 146 SyntacticMatches, 3 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2840 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=764, Invalid=8938, Unknown=0, NotChecked=0, Total=9702 [2024-09-12 18:00:40,041 INFO L434 NwaCegarLoop]: 14 mSDtfsCounter, 15 mSDsluCounter, 434 mSDsCounter, 0 mSdLazyCounter, 2800 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 448 SdHoareTripleChecker+Invalid, 2807 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 2800 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-09-12 18:00:40,041 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 448 Invalid, 2807 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 2800 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-09-12 18:00:40,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2024-09-12 18:00:40,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 161. [2024-09-12 18:00:40,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 142 states have (on average 1.0422535211267605) internal successors, (148), 144 states have internal predecessors, (148), 12 states have call successors, (12), 7 states have call predecessors, (12), 6 states have return successors, (11), 9 states have call predecessors, (11), 11 states have call successors, (11) [2024-09-12 18:00:40,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 171 transitions. [2024-09-12 18:00:40,077 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 171 transitions. Word has length 92 [2024-09-12 18:00:40,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:00:40,077 INFO L474 AbstractCegarLoop]: Abstraction has 161 states and 171 transitions. [2024-09-12 18:00:40,078 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 81 states, 80 states have (on average 2.225) internal successors, (178), 79 states have internal predecessors, (178), 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) [2024-09-12 18:00:40,078 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:00:40,078 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 171 transitions. [2024-09-12 18:00:40,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-09-12 18:00:40,079 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:00:40,079 INFO L216 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:00:40,092 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-09-12 18:00:40,279 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2024-09-12 18:00:40,280 INFO L399 AbstractCegarLoop]: === Iteration 32 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2024-09-12 18:00:40,280 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:00:40,280 INFO L85 PathProgramCache]: Analyzing trace with hash -518162380, now seen corresponding path program 9 times [2024-09-12 18:00:40,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:00:40,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089917065] [2024-09-12 18:00:40,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:00:40,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:00:40,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:00:41,456 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:00:41,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:00:41,458 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-09-12 18:00:41,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:00:41,463 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-09-12 18:00:41,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:00:41,467 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-12 18:00:41,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:00:41,472 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-09-12 18:00:41,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:00:41,476 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-09-12 18:00:41,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:00:41,480 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 76 proven. 125 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-09-12 18:00:41,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:00:41,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089917065] [2024-09-12 18:00:41,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089917065] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:00:41,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2059927850] [2024-09-12 18:00:41,481 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-12 18:00:41,481 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:00:41,481 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:00:41,483 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) [2024-09-12 18:00:41,490 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-09-12 18:00:41,549 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2024-09-12 18:00:41,549 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 18:00:41,550 INFO L262 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-09-12 18:00:41,552 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:00:42,791 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 10 proven. 191 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-09-12 18:00:42,791 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:00:44,783 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 10 proven. 191 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-09-12 18:00:44,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2059927850] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:00:44,784 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:00:44,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 34, 34] total 101 [2024-09-12 18:00:44,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396826191] [2024-09-12 18:00:44,784 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:00:44,784 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 101 states [2024-09-12 18:00:44,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:00:44,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2024-09-12 18:00:44,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=596, Invalid=9504, Unknown=0, NotChecked=0, Total=10100 [2024-09-12 18:00:44,787 INFO L87 Difference]: Start difference. First operand 161 states and 171 transitions. Second operand has 101 states, 100 states have (on average 2.38) internal successors, (238), 99 states have internal predecessors, (238), 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) [2024-09-12 18:00:47,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:00:47,206 INFO L93 Difference]: Finished difference Result 243 states and 255 transitions. [2024-09-12 18:00:47,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2024-09-12 18:00:47,207 INFO L78 Accepts]: Start accepts. Automaton has has 101 states, 100 states have (on average 2.38) internal successors, (238), 99 states have internal predecessors, (238), 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 110 [2024-09-12 18:00:47,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:00:47,208 INFO L225 Difference]: With dead ends: 243 [2024-09-12 18:00:47,208 INFO L226 Difference]: Without dead ends: 161 [2024-09-12 18:00:47,209 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 172 SyntacticMatches, 1 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5128 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=997, Invalid=17093, Unknown=0, NotChecked=0, Total=18090 [2024-09-12 18:00:47,210 INFO L434 NwaCegarLoop]: 17 mSDtfsCounter, 16 mSDsluCounter, 469 mSDsCounter, 0 mSdLazyCounter, 2790 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 486 SdHoareTripleChecker+Invalid, 2801 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 2790 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-09-12 18:00:47,210 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 486 Invalid, 2801 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 2790 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-09-12 18:00:47,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2024-09-12 18:00:47,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2024-09-12 18:00:47,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 142 states have (on average 1.0352112676056338) internal successors, (147), 144 states have internal predecessors, (147), 12 states have call successors, (12), 7 states have call predecessors, (12), 6 states have return successors, (11), 9 states have call predecessors, (11), 11 states have call successors, (11) [2024-09-12 18:00:47,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 170 transitions. [2024-09-12 18:00:47,257 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 170 transitions. Word has length 110 [2024-09-12 18:00:47,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:00:47,258 INFO L474 AbstractCegarLoop]: Abstraction has 161 states and 170 transitions. [2024-09-12 18:00:47,258 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 101 states, 100 states have (on average 2.38) internal successors, (238), 99 states have internal predecessors, (238), 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) [2024-09-12 18:00:47,258 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:00:47,258 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 170 transitions. [2024-09-12 18:00:47,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2024-09-12 18:00:47,259 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:00:47,259 INFO L216 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:00:47,276 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2024-09-12 18:00:47,459 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2024-09-12 18:00:47,460 INFO L399 AbstractCegarLoop]: === Iteration 33 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2024-09-12 18:00:47,460 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:00:47,460 INFO L85 PathProgramCache]: Analyzing trace with hash -356333262, now seen corresponding path program 10 times [2024-09-12 18:00:47,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:00:47,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199623196] [2024-09-12 18:00:47,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:00:47,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:00:47,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:00:47,979 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:00:47,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:00:47,981 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-12 18:00:47,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:00:47,983 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-12 18:00:47,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:00:47,984 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-09-12 18:00:47,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:00:47,985 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-09-12 18:00:47,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:00:47,986 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-09-12 18:00:47,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:00:47,988 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 65 proven. 167 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-09-12 18:00:47,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:00:47,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199623196] [2024-09-12 18:00:47,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199623196] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:00:47,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [727642149] [2024-09-12 18:00:47,988 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-12 18:00:47,988 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:00:47,989 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:00:47,990 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) [2024-09-12 18:00:47,991 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-09-12 18:00:48,039 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-12 18:00:48,040 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 18:00:48,041 INFO L262 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-09-12 18:00:48,043 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:00:48,604 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 10 proven. 222 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-09-12 18:00:48,604 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:00:49,253 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 10 proven. 222 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-09-12 18:00:49,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [727642149] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:00:49,253 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:00:49,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 35, 35] total 71 [2024-09-12 18:00:49,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105010554] [2024-09-12 18:00:49,253 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:00:49,254 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2024-09-12 18:00:49,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:00:49,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2024-09-12 18:00:49,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=487, Invalid=4483, Unknown=0, NotChecked=0, Total=4970 [2024-09-12 18:00:49,255 INFO L87 Difference]: Start difference. First operand 161 states and 170 transitions. Second operand has 71 states, 71 states have (on average 2.183098591549296) internal successors, (155), 69 states have internal predecessors, (155), 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) [2024-09-12 18:00:49,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:00:49,739 INFO L93 Difference]: Finished difference Result 186 states and 196 transitions. [2024-09-12 18:00:49,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-09-12 18:00:49,740 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 71 states have (on average 2.183098591549296) internal successors, (155), 69 states have internal predecessors, (155), 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 115 [2024-09-12 18:00:49,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:00:49,741 INFO L225 Difference]: With dead ends: 186 [2024-09-12 18:00:49,741 INFO L226 Difference]: Without dead ends: 184 [2024-09-12 18:00:49,742 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 195 SyntacticMatches, 12 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2558 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=560, Invalid=4990, Unknown=0, NotChecked=0, Total=5550 [2024-09-12 18:00:49,742 INFO L434 NwaCegarLoop]: 15 mSDtfsCounter, 6 mSDsluCounter, 286 mSDsCounter, 0 mSdLazyCounter, 1245 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 301 SdHoareTripleChecker+Invalid, 1245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-12 18:00:49,742 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 301 Invalid, 1245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1245 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-12 18:00:49,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2024-09-12 18:00:49,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 183. [2024-09-12 18:00:49,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 161 states have (on average 1.031055900621118) internal successors, (166), 163 states have internal predecessors, (166), 14 states have call successors, (14), 8 states have call predecessors, (14), 7 states have return successors, (13), 11 states have call predecessors, (13), 13 states have call successors, (13) [2024-09-12 18:00:49,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 193 transitions. [2024-09-12 18:00:49,782 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 193 transitions. Word has length 115 [2024-09-12 18:00:49,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:00:49,783 INFO L474 AbstractCegarLoop]: Abstraction has 183 states and 193 transitions. [2024-09-12 18:00:49,783 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 71 states have (on average 2.183098591549296) internal successors, (155), 69 states have internal predecessors, (155), 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) [2024-09-12 18:00:49,783 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:00:49,783 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 193 transitions. [2024-09-12 18:00:49,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2024-09-12 18:00:49,784 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:00:49,784 INFO L216 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:00:49,799 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2024-09-12 18:00:49,988 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2024-09-12 18:00:49,989 INFO L399 AbstractCegarLoop]: === Iteration 34 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2024-09-12 18:00:49,989 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:00:49,989 INFO L85 PathProgramCache]: Analyzing trace with hash -1654846268, now seen corresponding path program 11 times [2024-09-12 18:00:49,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:00:49,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407669606] [2024-09-12 18:00:49,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:00:49,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:00:50,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:00:51,385 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:00:51,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:00:51,387 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-12 18:00:51,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:00:51,391 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-12 18:00:51,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:00:51,394 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-09-12 18:00:51,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:00:51,397 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-09-12 18:00:51,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:00:51,400 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-09-12 18:00:51,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:00:51,403 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-12 18:00:51,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:00:51,407 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 117 proven. 166 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-12 18:00:51,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:00:51,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407669606] [2024-09-12 18:00:51,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407669606] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:00:51,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2105882751] [2024-09-12 18:00:51,408 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-12 18:00:51,408 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:00:51,408 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:00:51,410 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) [2024-09-12 18:00:51,410 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-09-12 18:00:51,462 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2024-09-12 18:00:51,462 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 18:00:51,464 INFO L262 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 77 conjuncts are in the unsatisfiable core [2024-09-12 18:00:51,466 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:00:53,265 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 12 proven. 271 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-12 18:00:53,265 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:00:56,469 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 12 proven. 271 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-12 18:00:56,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2105882751] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:00:56,470 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:00:56,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 45, 45] total 129 [2024-09-12 18:00:56,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412004599] [2024-09-12 18:00:56,470 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:00:56,471 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 129 states [2024-09-12 18:00:56,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:00:56,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 129 interpolants. [2024-09-12 18:00:56,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1132, Invalid=15380, Unknown=0, NotChecked=0, Total=16512 [2024-09-12 18:00:56,473 INFO L87 Difference]: Start difference. First operand 183 states and 193 transitions. Second operand has 129 states, 128 states have (on average 2.1640625) internal successors, (277), 127 states have internal predecessors, (277), 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) [2024-09-12 18:01:00,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:01:00,039 INFO L93 Difference]: Finished difference Result 358 states and 381 transitions. [2024-09-12 18:01:00,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2024-09-12 18:01:00,040 INFO L78 Accepts]: Start accepts. Automaton has has 129 states, 128 states have (on average 2.1640625) internal successors, (277), 127 states have internal predecessors, (277), 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 128 [2024-09-12 18:01:00,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:01:00,042 INFO L225 Difference]: With dead ends: 358 [2024-09-12 18:01:00,042 INFO L226 Difference]: Without dead ends: 267 [2024-09-12 18:01:00,044 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 344 GetRequests, 186 SyntacticMatches, 3 SemanticMatches, 155 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8485 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=1840, Invalid=22652, Unknown=0, NotChecked=0, Total=24492 [2024-09-12 18:01:00,044 INFO L434 NwaCegarLoop]: 16 mSDtfsCounter, 15 mSDsluCounter, 668 mSDsCounter, 0 mSdLazyCounter, 5279 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 684 SdHoareTripleChecker+Invalid, 5288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 5279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-09-12 18:01:00,045 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 684 Invalid, 5288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 5279 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-09-12 18:01:00,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2024-09-12 18:01:00,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 266. [2024-09-12 18:01:00,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 236 states have (on average 1.0338983050847457) internal successors, (244), 239 states have internal predecessors, (244), 21 states have call successors, (21), 9 states have call predecessors, (21), 8 states have return successors, (20), 17 states have call predecessors, (20), 20 states have call successors, (20) [2024-09-12 18:01:00,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 285 transitions. [2024-09-12 18:01:00,113 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 285 transitions. Word has length 128 [2024-09-12 18:01:00,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:01:00,113 INFO L474 AbstractCegarLoop]: Abstraction has 266 states and 285 transitions. [2024-09-12 18:01:00,114 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 129 states, 128 states have (on average 2.1640625) internal successors, (277), 127 states have internal predecessors, (277), 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) [2024-09-12 18:01:00,114 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:01:00,114 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 285 transitions. [2024-09-12 18:01:00,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2024-09-12 18:01:00,115 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:01:00,115 INFO L216 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:01:00,128 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2024-09-12 18:01:00,316 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,27 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:01:00,316 INFO L399 AbstractCegarLoop]: === Iteration 35 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2024-09-12 18:01:00,316 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:01:00,316 INFO L85 PathProgramCache]: Analyzing trace with hash -2032880204, now seen corresponding path program 12 times [2024-09-12 18:01:00,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:01:00,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313901120] [2024-09-12 18:01:00,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:01:00,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:01:00,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:01:02,022 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:01:02,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:01:02,024 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-12 18:01:02,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:01:02,027 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-12 18:01:02,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:01:02,030 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-09-12 18:01:02,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:01:02,034 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-09-12 18:01:02,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:01:02,037 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-09-12 18:01:02,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:01:02,040 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2024-09-12 18:01:02,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:01:02,043 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2024-09-12 18:01:02,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:01:02,046 INFO L134 CoverageAnalysis]: Checked inductivity of 463 backedges. 167 proven. 212 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-09-12 18:01:02,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:01:02,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313901120] [2024-09-12 18:01:02,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313901120] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:01:02,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1225067180] [2024-09-12 18:01:02,047 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-12 18:01:02,047 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:01:02,047 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:01:02,049 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) [2024-09-12 18:01:02,049 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-09-12 18:01:02,108 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2024-09-12 18:01:02,108 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 18:01:02,110 INFO L262 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 55 conjuncts are in the unsatisfiable core [2024-09-12 18:01:02,112 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:01:04,011 INFO L134 CoverageAnalysis]: Checked inductivity of 463 backedges. 14 proven. 365 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-09-12 18:01:04,011 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:01:07,231 INFO L134 CoverageAnalysis]: Checked inductivity of 463 backedges. 14 proven. 365 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-09-12 18:01:07,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1225067180] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:01:07,232 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:01:07,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 44, 44] total 133 [2024-09-12 18:01:07,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772447238] [2024-09-12 18:01:07,232 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:01:07,232 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 133 states [2024-09-12 18:01:07,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:01:07,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 133 interpolants. [2024-09-12 18:01:07,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=953, Invalid=16603, Unknown=0, NotChecked=0, Total=17556 [2024-09-12 18:01:07,234 INFO L87 Difference]: Start difference. First operand 266 states and 285 transitions. Second operand has 133 states, 132 states have (on average 2.393939393939394) internal successors, (316), 131 states have internal predecessors, (316), 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) [2024-09-12 18:01:11,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:01:11,390 INFO L93 Difference]: Finished difference Result 374 states and 395 transitions. [2024-09-12 18:01:11,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2024-09-12 18:01:11,390 INFO L78 Accepts]: Start accepts. Automaton has has 133 states, 132 states have (on average 2.393939393939394) internal successors, (316), 131 states have internal predecessors, (316), 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 146 [2024-09-12 18:01:11,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:01:11,392 INFO L225 Difference]: With dead ends: 374 [2024-09-12 18:01:11,392 INFO L226 Difference]: Without dead ends: 266 [2024-09-12 18:01:11,393 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 408 GetRequests, 228 SyntacticMatches, 1 SemanticMatches, 179 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9861 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=1640, Invalid=30940, Unknown=0, NotChecked=0, Total=32580 [2024-09-12 18:01:11,393 INFO L434 NwaCegarLoop]: 19 mSDtfsCounter, 17 mSDsluCounter, 817 mSDsCounter, 0 mSdLazyCounter, 5663 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 836 SdHoareTripleChecker+Invalid, 5682 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 5663 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-09-12 18:01:11,393 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 836 Invalid, 5682 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 5663 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-09-12 18:01:11,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2024-09-12 18:01:11,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 266. [2024-09-12 18:01:11,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 236 states have (on average 1.0296610169491525) internal successors, (243), 239 states have internal predecessors, (243), 21 states have call successors, (21), 9 states have call predecessors, (21), 8 states have return successors, (20), 17 states have call predecessors, (20), 20 states have call successors, (20) [2024-09-12 18:01:11,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 284 transitions. [2024-09-12 18:01:11,456 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 284 transitions. Word has length 146 [2024-09-12 18:01:11,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:01:11,456 INFO L474 AbstractCegarLoop]: Abstraction has 266 states and 284 transitions. [2024-09-12 18:01:11,457 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 133 states, 132 states have (on average 2.393939393939394) internal successors, (316), 131 states have internal predecessors, (316), 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) [2024-09-12 18:01:11,457 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:01:11,457 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 284 transitions. [2024-09-12 18:01:11,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2024-09-12 18:01:11,458 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:01:11,458 INFO L216 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:01:11,471 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2024-09-12 18:01:11,659 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,28 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:01:11,660 INFO L399 AbstractCegarLoop]: === Iteration 36 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2024-09-12 18:01:11,660 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:01:11,660 INFO L85 PathProgramCache]: Analyzing trace with hash 1419108274, now seen corresponding path program 13 times [2024-09-12 18:01:11,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:01:11,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797662959] [2024-09-12 18:01:11,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:01:11,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:01:11,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:01:12,295 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:01:12,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:01:12,297 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-12 18:01:12,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:01:12,298 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-12 18:01:12,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:01:12,299 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-09-12 18:01:12,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:01:12,300 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-12 18:01:12,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:01:12,302 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2024-09-12 18:01:12,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:01:12,303 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-09-12 18:01:12,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:01:12,304 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2024-09-12 18:01:12,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:01:12,306 INFO L134 CoverageAnalysis]: Checked inductivity of 504 backedges. 126 proven. 294 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-09-12 18:01:12,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:01:12,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797662959] [2024-09-12 18:01:12,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [797662959] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:01:12,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1647836062] [2024-09-12 18:01:12,307 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-12 18:01:12,307 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:01:12,307 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:01:12,311 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) [2024-09-12 18:01:12,312 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-09-12 18:01:12,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:01:12,364 INFO L262 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-09-12 18:01:12,367 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:01:13,099 INFO L134 CoverageAnalysis]: Checked inductivity of 504 backedges. 14 proven. 406 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-09-12 18:01:13,100 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:01:14,126 INFO L134 CoverageAnalysis]: Checked inductivity of 504 backedges. 14 proven. 406 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-09-12 18:01:14,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1647836062] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:01:14,127 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:01:14,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 45, 45] total 91 [2024-09-12 18:01:14,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499706486] [2024-09-12 18:01:14,127 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:01:14,128 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 91 states [2024-09-12 18:01:14,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:01:14,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2024-09-12 18:01:14,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=758, Invalid=7432, Unknown=0, NotChecked=0, Total=8190 [2024-09-12 18:01:14,130 INFO L87 Difference]: Start difference. First operand 266 states and 284 transitions. Second operand has 91 states, 91 states have (on average 2.208791208791209) internal successors, (201), 89 states have internal predecessors, (201), 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) [2024-09-12 18:01:14,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:01:14,959 INFO L93 Difference]: Finished difference Result 291 states and 310 transitions. [2024-09-12 18:01:14,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2024-09-12 18:01:14,962 INFO L78 Accepts]: Start accepts. Automaton has has 91 states, 91 states have (on average 2.208791208791209) internal successors, (201), 89 states have internal predecessors, (201), 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 151 [2024-09-12 18:01:14,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:01:14,967 INFO L225 Difference]: With dead ends: 291 [2024-09-12 18:01:14,968 INFO L226 Difference]: Without dead ends: 289 [2024-09-12 18:01:14,968 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 366 GetRequests, 255 SyntacticMatches, 18 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4593 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=851, Invalid=8079, Unknown=0, NotChecked=0, Total=8930 [2024-09-12 18:01:14,969 INFO L434 NwaCegarLoop]: 15 mSDtfsCounter, 3 mSDsluCounter, 492 mSDsCounter, 0 mSdLazyCounter, 2320 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 507 SdHoareTripleChecker+Invalid, 2320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2320 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-09-12 18:01:14,969 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 507 Invalid, 2320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2320 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-09-12 18:01:14,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2024-09-12 18:01:15,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 288. [2024-09-12 18:01:15,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 255 states have (on average 1.0274509803921568) internal successors, (262), 258 states have internal predecessors, (262), 23 states have call successors, (23), 10 states have call predecessors, (23), 9 states have return successors, (22), 19 states have call predecessors, (22), 22 states have call successors, (22) [2024-09-12 18:01:15,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 307 transitions. [2024-09-12 18:01:15,057 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 307 transitions. Word has length 151 [2024-09-12 18:01:15,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:01:15,058 INFO L474 AbstractCegarLoop]: Abstraction has 288 states and 307 transitions. [2024-09-12 18:01:15,058 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 91 states, 91 states have (on average 2.208791208791209) internal successors, (201), 89 states have internal predecessors, (201), 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) [2024-09-12 18:01:15,058 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:01:15,058 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 307 transitions. [2024-09-12 18:01:15,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2024-09-12 18:01:15,060 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:01:15,060 INFO L216 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:01:15,075 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2024-09-12 18:01:15,261 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2024-09-12 18:01:15,262 INFO L399 AbstractCegarLoop]: === Iteration 37 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2024-09-12 18:01:15,262 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:01:15,262 INFO L85 PathProgramCache]: Analyzing trace with hash 10651204, now seen corresponding path program 14 times [2024-09-12 18:01:15,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:01:15,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277736233] [2024-09-12 18:01:15,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:01:15,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:01:15,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:01:17,393 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:01:17,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:01:17,395 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-12 18:01:17,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:01:17,400 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-12 18:01:17,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:01:17,404 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-09-12 18:01:17,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:01:17,408 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-12 18:01:17,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:01:17,411 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2024-09-12 18:01:17,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:01:17,415 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-09-12 18:01:17,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:01:17,419 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2024-09-12 18:01:17,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:01:17,422 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-09-12 18:01:17,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:01:17,427 INFO L134 CoverageAnalysis]: Checked inductivity of 601 backedges. 226 proven. 263 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-09-12 18:01:17,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:01:17,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277736233] [2024-09-12 18:01:17,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277736233] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:01:17,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [325327224] [2024-09-12 18:01:17,428 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 18:01:17,428 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:01:17,428 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:01:17,429 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) [2024-09-12 18:01:17,430 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-09-12 18:01:17,491 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 18:01:17,491 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 18:01:17,493 INFO L262 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 61 conjuncts are in the unsatisfiable core [2024-09-12 18:01:17,497 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:01:19,807 INFO L134 CoverageAnalysis]: Checked inductivity of 601 backedges. 16 proven. 473 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-09-12 18:01:19,807 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:01:23,701 INFO L134 CoverageAnalysis]: Checked inductivity of 601 backedges. 16 proven. 473 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-09-12 18:01:23,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [325327224] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:01:23,702 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:01:23,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 49, 49] total 149 [2024-09-12 18:01:23,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615580298] [2024-09-12 18:01:23,702 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:01:23,702 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 149 states [2024-09-12 18:01:23,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:01:23,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 149 interpolants. [2024-09-12 18:01:23,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1163, Invalid=20889, Unknown=0, NotChecked=0, Total=22052 [2024-09-12 18:01:23,705 INFO L87 Difference]: Start difference. First operand 288 states and 307 transitions. Second operand has 149 states, 148 states have (on average 2.3986486486486487) internal successors, (355), 147 states have internal predecessors, (355), 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) [2024-09-12 18:01:29,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:01:29,123 INFO L93 Difference]: Finished difference Result 364 states and 381 transitions. [2024-09-12 18:01:29,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2024-09-12 18:01:29,125 INFO L78 Accepts]: Start accepts. Automaton has has 149 states, 148 states have (on average 2.3986486486486487) internal successors, (355), 147 states have internal predecessors, (355), 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 164 [2024-09-12 18:01:29,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:01:29,127 INFO L225 Difference]: With dead ends: 364 [2024-09-12 18:01:29,127 INFO L226 Difference]: Without dead ends: 243 [2024-09-12 18:01:29,130 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 459 GetRequests, 256 SyntacticMatches, 1 SemanticMatches, 202 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12802 ImplicationChecksByTransitivity, 9.0s TimeCoverageRelationStatistics Valid=2020, Invalid=39392, Unknown=0, NotChecked=0, Total=41412 [2024-09-12 18:01:29,130 INFO L434 NwaCegarLoop]: 20 mSDtfsCounter, 11 mSDsluCounter, 875 mSDsCounter, 0 mSdLazyCounter, 6520 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 895 SdHoareTripleChecker+Invalid, 6532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 6520 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-09-12 18:01:29,131 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 895 Invalid, 6532 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 6520 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-09-12 18:01:29,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2024-09-12 18:01:29,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 243. [2024-09-12 18:01:29,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 216 states have (on average 1.0277777777777777) internal successors, (222), 218 states have internal predecessors, (222), 18 states have call successors, (18), 9 states have call predecessors, (18), 8 states have return successors, (17), 15 states have call predecessors, (17), 17 states have call successors, (17) [2024-09-12 18:01:29,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 257 transitions. [2024-09-12 18:01:29,206 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 257 transitions. Word has length 164 [2024-09-12 18:01:29,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:01:29,206 INFO L474 AbstractCegarLoop]: Abstraction has 243 states and 257 transitions. [2024-09-12 18:01:29,207 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 149 states, 148 states have (on average 2.3986486486486487) internal successors, (355), 147 states have internal predecessors, (355), 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) [2024-09-12 18:01:29,207 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:01:29,207 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 257 transitions. [2024-09-12 18:01:29,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2024-09-12 18:01:29,208 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:01:29,208 INFO L216 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:01:29,221 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2024-09-12 18:01:29,409 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2024-09-12 18:01:29,409 INFO L399 AbstractCegarLoop]: === Iteration 38 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2024-09-12 18:01:29,409 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:01:29,410 INFO L85 PathProgramCache]: Analyzing trace with hash -1730646846, now seen corresponding path program 15 times [2024-09-12 18:01:29,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:01:29,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730128950] [2024-09-12 18:01:29,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:01:29,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:01:29,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:01:30,241 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:01:30,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:01:30,243 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-09-12 18:01:30,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:01:30,244 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-09-12 18:01:30,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:01:30,247 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-12 18:01:30,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:01:30,248 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2024-09-12 18:01:30,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:01:30,249 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2024-09-12 18:01:30,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:01:30,250 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2024-09-12 18:01:30,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:01:30,251 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2024-09-12 18:01:30,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:01:30,252 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2024-09-12 18:01:30,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:01:30,254 INFO L134 CoverageAnalysis]: Checked inductivity of 647 backedges. 164 proven. 371 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-09-12 18:01:30,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:01:30,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730128950] [2024-09-12 18:01:30,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730128950] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:01:30,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1536732162] [2024-09-12 18:01:30,254 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-12 18:01:30,254 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:01:30,254 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:01:30,256 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) [2024-09-12 18:01:30,257 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-09-12 18:01:30,319 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-09-12 18:01:30,320 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 18:01:30,322 INFO L262 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 54 conjuncts are in the unsatisfiable core [2024-09-12 18:01:30,325 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:01:31,194 INFO L134 CoverageAnalysis]: Checked inductivity of 647 backedges. 16 proven. 519 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-09-12 18:01:31,194 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:01:32,474 INFO L134 CoverageAnalysis]: Checked inductivity of 647 backedges. 16 proven. 519 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-09-12 18:01:32,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1536732162] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:01:32,474 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:01:32,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 50, 50] total 101 [2024-09-12 18:01:32,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176683736] [2024-09-12 18:01:32,475 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:01:32,476 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 101 states [2024-09-12 18:01:32,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:01:32,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2024-09-12 18:01:32,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=916, Invalid=9184, Unknown=0, NotChecked=0, Total=10100 [2024-09-12 18:01:32,477 INFO L87 Difference]: Start difference. First operand 243 states and 257 transitions. Second operand has 101 states, 101 states have (on average 2.217821782178218) internal successors, (224), 99 states have internal predecessors, (224), 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) [2024-09-12 18:01:33,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:01:33,283 INFO L93 Difference]: Finished difference Result 259 states and 273 transitions. [2024-09-12 18:01:33,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2024-09-12 18:01:33,284 INFO L78 Accepts]: Start accepts. Automaton has has 101 states, 101 states have (on average 2.217821782178218) internal successors, (224), 99 states have internal predecessors, (224), 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 169 [2024-09-12 18:01:33,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:01:33,285 INFO L225 Difference]: With dead ends: 259 [2024-09-12 18:01:33,285 INFO L226 Difference]: Without dead ends: 257 [2024-09-12 18:01:33,286 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 409 GetRequests, 288 SyntacticMatches, 18 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5621 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1019, Invalid=9901, Unknown=0, NotChecked=0, Total=10920 [2024-09-12 18:01:33,287 INFO L434 NwaCegarLoop]: 15 mSDtfsCounter, 6 mSDsluCounter, 421 mSDsCounter, 0 mSdLazyCounter, 2274 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 436 SdHoareTripleChecker+Invalid, 2274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-09-12 18:01:33,287 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 436 Invalid, 2274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2274 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-09-12 18:01:33,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2024-09-12 18:01:33,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 256. [2024-09-12 18:01:33,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 227 states have (on average 1.026431718061674) internal successors, (233), 229 states have internal predecessors, (233), 19 states have call successors, (19), 10 states have call predecessors, (19), 9 states have return successors, (18), 16 states have call predecessors, (18), 18 states have call successors, (18) [2024-09-12 18:01:33,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 270 transitions. [2024-09-12 18:01:33,354 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 270 transitions. Word has length 169 [2024-09-12 18:01:33,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:01:33,355 INFO L474 AbstractCegarLoop]: Abstraction has 256 states and 270 transitions. [2024-09-12 18:01:33,355 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 101 states, 101 states have (on average 2.217821782178218) internal successors, (224), 99 states have internal predecessors, (224), 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) [2024-09-12 18:01:33,355 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:01:33,355 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 270 transitions. [2024-09-12 18:01:33,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2024-09-12 18:01:33,356 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:01:33,356 INFO L216 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:01:33,370 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2024-09-12 18:01:33,557 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2024-09-12 18:01:33,557 INFO L399 AbstractCegarLoop]: === Iteration 39 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2024-09-12 18:01:33,557 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:01:33,558 INFO L85 PathProgramCache]: Analyzing trace with hash 2106176308, now seen corresponding path program 16 times [2024-09-12 18:01:33,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:01:33,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809107174] [2024-09-12 18:01:33,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:01:33,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:01:33,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:01:35,885 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:01:35,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:01:35,886 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-09-12 18:01:35,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:01:35,890 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-09-12 18:01:35,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:01:35,892 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-12 18:01:35,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:01:35,895 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2024-09-12 18:01:35,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:01:35,897 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2024-09-12 18:01:35,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:01:35,900 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2024-09-12 18:01:35,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:01:35,903 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2024-09-12 18:01:35,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:01:35,905 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2024-09-12 18:01:35,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:01:35,908 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2024-09-12 18:01:35,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:01:35,912 INFO L134 CoverageAnalysis]: Checked inductivity of 757 backedges. 294 proven. 319 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-09-12 18:01:35,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:01:35,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809107174] [2024-09-12 18:01:35,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809107174] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:01:35,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1896547929] [2024-09-12 18:01:35,912 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-12 18:01:35,912 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:01:35,912 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:01:35,913 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) [2024-09-12 18:01:35,914 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2024-09-12 18:01:35,972 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-12 18:01:35,973 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 18:01:35,974 INFO L262 TraceCheckSpWp]: Trace formula consists of 372 conjuncts, 81 conjuncts are in the unsatisfiable core [2024-09-12 18:01:35,977 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:01:37,714 INFO L134 CoverageAnalysis]: Checked inductivity of 757 backedges. 23 proven. 614 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-09-12 18:01:37,714 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:01:42,427 INFO L134 CoverageAnalysis]: Checked inductivity of 757 backedges. 23 proven. 614 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-09-12 18:01:42,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1896547929] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:01:42,427 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:01:42,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 65, 65] total 159 [2024-09-12 18:01:42,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489118028] [2024-09-12 18:01:42,427 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:01:42,428 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 159 states [2024-09-12 18:01:42,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:01:42,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 159 interpolants. [2024-09-12 18:01:42,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1671, Invalid=23451, Unknown=0, NotChecked=0, Total=25122 [2024-09-12 18:01:42,430 INFO L87 Difference]: Start difference. First operand 256 states and 270 transitions. Second operand has 159 states, 158 states have (on average 2.2341772151898733) internal successors, (353), 157 states have internal predecessors, (353), 29 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2024-09-12 18:01:49,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:01:49,449 INFO L93 Difference]: Finished difference Result 502 states and 535 transitions. [2024-09-12 18:01:49,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 135 states. [2024-09-12 18:01:49,451 INFO L78 Accepts]: Start accepts. Automaton has has 159 states, 158 states have (on average 2.2341772151898733) internal successors, (353), 157 states have internal predecessors, (353), 29 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) Word has length 182 [2024-09-12 18:01:49,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:01:49,453 INFO L225 Difference]: With dead ends: 502 [2024-09-12 18:01:49,453 INFO L226 Difference]: Without dead ends: 376 [2024-09-12 18:01:49,455 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 490 GetRequests, 290 SyntacticMatches, 1 SemanticMatches, 199 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13265 ImplicationChecksByTransitivity, 9.5s TimeCoverageRelationStatistics Valid=2840, Invalid=37360, Unknown=0, NotChecked=0, Total=40200 [2024-09-12 18:01:49,456 INFO L434 NwaCegarLoop]: 18 mSDtfsCounter, 16 mSDsluCounter, 1127 mSDsCounter, 0 mSdLazyCounter, 10393 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 1145 SdHoareTripleChecker+Invalid, 10401 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 10393 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2024-09-12 18:01:49,456 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 1145 Invalid, 10401 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 10393 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2024-09-12 18:01:49,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2024-09-12 18:01:49,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 376. [2024-09-12 18:01:49,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 376 states, 336 states have (on average 1.0327380952380953) internal successors, (347), 339 states have internal predecessors, (347), 29 states have call successors, (29), 11 states have call predecessors, (29), 10 states have return successors, (28), 25 states have call predecessors, (28), 28 states have call successors, (28) [2024-09-12 18:01:49,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 404 transitions. [2024-09-12 18:01:49,578 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 404 transitions. Word has length 182 [2024-09-12 18:01:49,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:01:49,579 INFO L474 AbstractCegarLoop]: Abstraction has 376 states and 404 transitions. [2024-09-12 18:01:49,579 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 159 states, 158 states have (on average 2.2341772151898733) internal successors, (353), 157 states have internal predecessors, (353), 29 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2024-09-12 18:01:49,579 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:01:49,579 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 404 transitions. [2024-09-12 18:01:49,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2024-09-12 18:01:49,581 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:01:49,581 INFO L216 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:01:49,598 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2024-09-12 18:01:49,785 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2024-09-12 18:01:49,786 INFO L399 AbstractCegarLoop]: === Iteration 40 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2024-09-12 18:01:49,786 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:01:49,786 INFO L85 PathProgramCache]: Analyzing trace with hash -1129660476, now seen corresponding path program 17 times [2024-09-12 18:01:49,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:01:49,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346110517] [2024-09-12 18:01:49,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:01:49,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:01:49,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:01:52,469 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:01:52,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:01:52,471 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-09-12 18:01:52,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:01:52,475 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-09-12 18:01:52,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:01:52,477 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-09-12 18:01:52,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:01:52,480 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-12 18:01:52,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:01:52,482 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2024-09-12 18:01:52,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:01:52,485 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-09-12 18:01:52,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:01:52,487 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2024-09-12 18:01:52,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:01:52,490 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-09-12 18:01:52,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:01:52,492 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2024-09-12 18:01:52,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:01:52,495 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2024-09-12 18:01:52,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:01:52,499 INFO L134 CoverageAnalysis]: Checked inductivity of 931 backedges. 371 proven. 380 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-09-12 18:01:52,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:01:52,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346110517] [2024-09-12 18:01:52,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1346110517] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:01:52,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [581881883] [2024-09-12 18:01:52,499 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-12 18:01:52,499 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:01:52,499 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:01:52,500 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) [2024-09-12 18:01:52,501 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2024-09-12 18:01:52,566 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2024-09-12 18:01:52,566 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 18:01:52,568 INFO L262 TraceCheckSpWp]: Trace formula consists of 407 conjuncts, 80 conjuncts are in the unsatisfiable core [2024-09-12 18:01:52,570 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:01:54,457 INFO L134 CoverageAnalysis]: Checked inductivity of 931 backedges. 20 proven. 731 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-09-12 18:01:54,457 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:02:00,100 INFO L134 CoverageAnalysis]: Checked inductivity of 931 backedges. 20 proven. 731 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-09-12 18:02:00,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [581881883] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:02:00,101 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:02:00,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [71, 69, 69] total 171 [2024-09-12 18:02:00,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350939323] [2024-09-12 18:02:00,101 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:02:00,101 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 171 states [2024-09-12 18:02:00,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:02:00,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 171 interpolants. [2024-09-12 18:02:00,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1948, Invalid=27122, Unknown=0, NotChecked=0, Total=29070 [2024-09-12 18:02:00,105 INFO L87 Difference]: Start difference. First operand 376 states and 404 transitions. Second operand has 171 states, 170 states have (on average 2.2470588235294118) internal successors, (382), 169 states have internal predecessors, (382), 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) [2024-09-12 18:02:07,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:02:07,749 INFO L93 Difference]: Finished difference Result 625 states and 669 transitions. [2024-09-12 18:02:07,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 136 states. [2024-09-12 18:02:07,749 INFO L78 Accepts]: Start accepts. Automaton has has 171 states, 170 states have (on average 2.2470588235294118) internal successors, (382), 169 states have internal predecessors, (382), 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 200 [2024-09-12 18:02:07,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:02:07,752 INFO L225 Difference]: With dead ends: 625 [2024-09-12 18:02:07,752 INFO L226 Difference]: Without dead ends: 486 [2024-09-12 18:02:07,754 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 528 GetRequests, 320 SyntacticMatches, 3 SemanticMatches, 205 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14720 ImplicationChecksByTransitivity, 10.7s TimeCoverageRelationStatistics Valid=3074, Invalid=39568, Unknown=0, NotChecked=0, Total=42642 [2024-09-12 18:02:07,754 INFO L434 NwaCegarLoop]: 20 mSDtfsCounter, 12 mSDsluCounter, 1266 mSDsCounter, 0 mSdLazyCounter, 11351 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 1286 SdHoareTripleChecker+Invalid, 11359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 11351 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2024-09-12 18:02:07,755 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 1286 Invalid, 11359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 11351 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2024-09-12 18:02:07,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 486 states. [2024-09-12 18:02:07,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 486 to 485. [2024-09-12 18:02:07,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 485 states, 433 states have (on average 1.0277136258660509) internal successors, (445), 437 states have internal predecessors, (445), 40 states have call successors, (40), 12 states have call predecessors, (40), 11 states have return successors, (39), 35 states have call predecessors, (39), 39 states have call successors, (39) [2024-09-12 18:02:07,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 485 states to 485 states and 524 transitions. [2024-09-12 18:02:07,887 INFO L78 Accepts]: Start accepts. Automaton has 485 states and 524 transitions. Word has length 200 [2024-09-12 18:02:07,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:02:07,888 INFO L474 AbstractCegarLoop]: Abstraction has 485 states and 524 transitions. [2024-09-12 18:02:07,888 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 171 states, 170 states have (on average 2.2470588235294118) internal successors, (382), 169 states have internal predecessors, (382), 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) [2024-09-12 18:02:07,888 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:02:07,888 INFO L276 IsEmpty]: Start isEmpty. Operand 485 states and 524 transitions. [2024-09-12 18:02:07,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2024-09-12 18:02:07,890 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:02:07,890 INFO L216 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:02:07,905 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2024-09-12 18:02:08,091 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2024-09-12 18:02:08,091 INFO L399 AbstractCegarLoop]: === Iteration 41 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2024-09-12 18:02:08,092 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:02:08,092 INFO L85 PathProgramCache]: Analyzing trace with hash 1950118068, now seen corresponding path program 18 times [2024-09-12 18:02:08,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:02:08,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696795646] [2024-09-12 18:02:08,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:02:08,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:02:08,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:02:11,140 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:02:11,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:02:11,142 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-09-12 18:02:11,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:02:11,145 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-09-12 18:02:11,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:02:11,147 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-09-12 18:02:11,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:02:11,150 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2024-09-12 18:02:11,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:02:11,152 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-09-12 18:02:11,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:02:11,155 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2024-09-12 18:02:11,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:02:11,157 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-09-12 18:02:11,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:02:11,160 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2024-09-12 18:02:11,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:02:11,162 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2024-09-12 18:02:11,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:02:11,165 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2024-09-12 18:02:11,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:02:11,167 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2024-09-12 18:02:11,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:02:11,171 INFO L134 CoverageAnalysis]: Checked inductivity of 1123 backedges. 457 proven. 446 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-09-12 18:02:11,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:02:11,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696795646] [2024-09-12 18:02:11,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696795646] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:02:11,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1917394677] [2024-09-12 18:02:11,171 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-12 18:02:11,171 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:02:11,172 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:02:11,173 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) [2024-09-12 18:02:11,173 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2024-09-12 18:02:11,243 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2024-09-12 18:02:11,243 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 18:02:11,245 INFO L262 TraceCheckSpWp]: Trace formula consists of 442 conjuncts, 79 conjuncts are in the unsatisfiable core [2024-09-12 18:02:11,248 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:02:14,917 INFO L134 CoverageAnalysis]: Checked inductivity of 1123 backedges. 22 proven. 881 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-09-12 18:02:14,918 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:02:20,997 INFO L134 CoverageAnalysis]: Checked inductivity of 1123 backedges. 22 proven. 881 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-09-12 18:02:20,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1917394677] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:02:20,997 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:02:20,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [77, 64, 64] total 197 [2024-09-12 18:02:20,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86613415] [2024-09-12 18:02:20,997 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:02:20,998 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 197 states [2024-09-12 18:02:20,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:02:20,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 197 interpolants. [2024-09-12 18:02:21,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1919, Invalid=36693, Unknown=0, NotChecked=0, Total=38612 [2024-09-12 18:02:21,001 INFO L87 Difference]: Start difference. First operand 485 states and 524 transitions. Second operand has 197 states, 196 states have (on average 2.4081632653061225) internal successors, (472), 195 states have internal predecessors, (472), 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) [2024-09-12 18:02:30,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:02:30,334 INFO L93 Difference]: Finished difference Result 641 states and 683 transitions. [2024-09-12 18:02:30,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2024-09-12 18:02:30,334 INFO L78 Accepts]: Start accepts. Automaton has has 197 states, 196 states have (on average 2.4081632653061225) internal successors, (472), 195 states have internal predecessors, (472), 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 218 [2024-09-12 18:02:30,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:02:30,337 INFO L225 Difference]: With dead ends: 641 [2024-09-12 18:02:30,337 INFO L226 Difference]: Without dead ends: 485 [2024-09-12 18:02:30,341 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 612 GetRequests, 340 SyntacticMatches, 1 SemanticMatches, 271 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23923 ImplicationChecksByTransitivity, 15.0s TimeCoverageRelationStatistics Valid=3394, Invalid=70862, Unknown=0, NotChecked=0, Total=74256 [2024-09-12 18:02:30,342 INFO L434 NwaCegarLoop]: 23 mSDtfsCounter, 17 mSDsluCounter, 1458 mSDsCounter, 0 mSdLazyCounter, 11893 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 1481 SdHoareTripleChecker+Invalid, 11932 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 11893 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2024-09-12 18:02:30,342 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 1481 Invalid, 11932 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 11893 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2024-09-12 18:02:30,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 485 states. [2024-09-12 18:02:30,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 485 to 485. [2024-09-12 18:02:30,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 485 states, 433 states have (on average 1.0254041570438799) internal successors, (444), 437 states have internal predecessors, (444), 40 states have call successors, (40), 12 states have call predecessors, (40), 11 states have return successors, (39), 35 states have call predecessors, (39), 39 states have call successors, (39) [2024-09-12 18:02:30,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 485 states to 485 states and 523 transitions. [2024-09-12 18:02:30,501 INFO L78 Accepts]: Start accepts. Automaton has 485 states and 523 transitions. Word has length 218 [2024-09-12 18:02:30,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:02:30,501 INFO L474 AbstractCegarLoop]: Abstraction has 485 states and 523 transitions. [2024-09-12 18:02:30,501 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 197 states, 196 states have (on average 2.4081632653061225) internal successors, (472), 195 states have internal predecessors, (472), 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) [2024-09-12 18:02:30,501 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:02:30,501 INFO L276 IsEmpty]: Start isEmpty. Operand 485 states and 523 transitions. [2024-09-12 18:02:30,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2024-09-12 18:02:30,502 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:02:30,503 INFO L216 NwaCegarLoop]: trace histogram [13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:02:30,515 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2024-09-12 18:02:30,706 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,34 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:02:30,706 INFO L399 AbstractCegarLoop]: === Iteration 42 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2024-09-12 18:02:30,707 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:02:30,707 INFO L85 PathProgramCache]: Analyzing trace with hash -825504590, now seen corresponding path program 19 times [2024-09-12 18:02:30,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:02:30,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081196544] [2024-09-12 18:02:30,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:02:30,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:02:30,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:02:31,903 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:02:31,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:02:31,904 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-09-12 18:02:31,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:02:31,905 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-09-12 18:02:31,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:02:31,906 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-09-12 18:02:31,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:02:31,907 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-09-12 18:02:31,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:02:31,908 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2024-09-12 18:02:31,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:02:31,909 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2024-09-12 18:02:31,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:02:31,910 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2024-09-12 18:02:31,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:02:31,911 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2024-09-12 18:02:31,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:02:31,912 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2024-09-12 18:02:31,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:02:31,913 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2024-09-12 18:02:31,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:02:31,914 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2024-09-12 18:02:31,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:02:31,915 INFO L134 CoverageAnalysis]: Checked inductivity of 1184 backedges. 308 proven. 656 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-09-12 18:02:31,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:02:31,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081196544] [2024-09-12 18:02:31,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081196544] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:02:31,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1069166080] [2024-09-12 18:02:31,915 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-12 18:02:31,916 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:02:31,916 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:02:31,917 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) [2024-09-12 18:02:31,918 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2024-09-12 18:02:31,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:02:31,998 INFO L262 TraceCheckSpWp]: Trace formula consists of 453 conjuncts, 66 conjuncts are in the unsatisfiable core [2024-09-12 18:02:32,002 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:02:33,343 INFO L134 CoverageAnalysis]: Checked inductivity of 1184 backedges. 22 proven. 942 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-09-12 18:02:33,343 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:02:35,211 INFO L134 CoverageAnalysis]: Checked inductivity of 1184 backedges. 22 proven. 942 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-09-12 18:02:35,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1069166080] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:02:35,211 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:02:35,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 65, 65] total 131 [2024-09-12 18:02:35,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293173266] [2024-09-12 18:02:35,212 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:02:35,212 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 131 states [2024-09-12 18:02:35,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:02:35,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 131 interpolants. [2024-09-12 18:02:35,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1480, Invalid=15550, Unknown=0, NotChecked=0, Total=17030 [2024-09-12 18:02:35,215 INFO L87 Difference]: Start difference. First operand 485 states and 523 transitions. Second operand has 131 states, 131 states have (on average 2.236641221374046) internal successors, (293), 129 states have internal predecessors, (293), 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) [2024-09-12 18:02:36,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:02:36,470 INFO L93 Difference]: Finished difference Result 519 states and 559 transitions. [2024-09-12 18:02:36,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2024-09-12 18:02:36,471 INFO L78 Accepts]: Start accepts. Automaton has has 131 states, 131 states have (on average 2.236641221374046) internal successors, (293), 129 states have internal predecessors, (293), 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 223 [2024-09-12 18:02:36,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:02:36,473 INFO L225 Difference]: With dead ends: 519 [2024-09-12 18:02:36,473 INFO L226 Difference]: Without dead ends: 517 [2024-09-12 18:02:36,474 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 538 GetRequests, 379 SyntacticMatches, 26 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10051 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=1613, Invalid=16477, Unknown=0, NotChecked=0, Total=18090 [2024-09-12 18:02:36,474 INFO L434 NwaCegarLoop]: 15 mSDtfsCounter, 6 mSDsluCounter, 537 mSDsCounter, 0 mSdLazyCounter, 3444 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 552 SdHoareTripleChecker+Invalid, 3444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3444 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-09-12 18:02:36,475 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 552 Invalid, 3444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3444 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-09-12 18:02:36,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 517 states. [2024-09-12 18:02:36,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 517 to 516. [2024-09-12 18:02:36,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 516 states, 460 states have (on average 1.0239130434782608) internal successors, (471), 464 states have internal predecessors, (471), 43 states have call successors, (43), 13 states have call predecessors, (43), 12 states have return successors, (42), 38 states have call predecessors, (42), 42 states have call successors, (42) [2024-09-12 18:02:36,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 516 states to 516 states and 556 transitions. [2024-09-12 18:02:36,604 INFO L78 Accepts]: Start accepts. Automaton has 516 states and 556 transitions. Word has length 223 [2024-09-12 18:02:36,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:02:36,604 INFO L474 AbstractCegarLoop]: Abstraction has 516 states and 556 transitions. [2024-09-12 18:02:36,605 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 131 states, 131 states have (on average 2.236641221374046) internal successors, (293), 129 states have internal predecessors, (293), 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) [2024-09-12 18:02:36,605 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:02:36,605 INFO L276 IsEmpty]: Start isEmpty. Operand 516 states and 556 transitions. [2024-09-12 18:02:36,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2024-09-12 18:02:36,606 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:02:36,606 INFO L216 NwaCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:02:36,623 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2024-09-12 18:02:36,806 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,35 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:02:36,807 INFO L399 AbstractCegarLoop]: === Iteration 43 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2024-09-12 18:02:36,807 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:02:36,807 INFO L85 PathProgramCache]: Analyzing trace with hash -667567804, now seen corresponding path program 20 times [2024-09-12 18:02:36,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:02:36,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972556034] [2024-09-12 18:02:36,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:02:36,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:02:36,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:02:40,372 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:02:40,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:02:40,374 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-09-12 18:02:40,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:02:40,377 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-09-12 18:02:40,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:02:40,379 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-09-12 18:02:40,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:02:40,382 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-09-12 18:02:40,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:02:40,384 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2024-09-12 18:02:40,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:02:40,386 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2024-09-12 18:02:40,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:02:40,389 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2024-09-12 18:02:40,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:02:40,391 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2024-09-12 18:02:40,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:02:40,394 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2024-09-12 18:02:40,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:02:40,397 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2024-09-12 18:02:40,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:02:40,399 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2024-09-12 18:02:40,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:02:40,402 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2024-09-12 18:02:40,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:02:40,406 INFO L134 CoverageAnalysis]: Checked inductivity of 1333 backedges. 552 proven. 517 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-09-12 18:02:40,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:02:40,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972556034] [2024-09-12 18:02:40,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972556034] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:02:40,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [285698448] [2024-09-12 18:02:40,406 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 18:02:40,406 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:02:40,406 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:02:40,408 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) [2024-09-12 18:02:40,409 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2024-09-12 18:02:40,494 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 18:02:40,494 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 18:02:40,496 INFO L262 TraceCheckSpWp]: Trace formula consists of 477 conjuncts, 94 conjuncts are in the unsatisfiable core [2024-09-12 18:02:40,499 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:02:43,301 INFO L134 CoverageAnalysis]: Checked inductivity of 1333 backedges. 24 proven. 1045 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-09-12 18:02:43,301 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:02:51,228 INFO L134 CoverageAnalysis]: Checked inductivity of 1333 backedges. 24 proven. 1045 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-09-12 18:02:51,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [285698448] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:02:51,228 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:02:51,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [83, 81, 81] total 201 [2024-09-12 18:02:51,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970827648] [2024-09-12 18:02:51,229 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:02:51,230 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 201 states [2024-09-12 18:02:51,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:02:51,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 201 interpolants. [2024-09-12 18:02:51,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2647, Invalid=37553, Unknown=0, NotChecked=0, Total=40200 [2024-09-12 18:02:51,234 INFO L87 Difference]: Start difference. First operand 516 states and 556 transitions. Second operand has 201 states, 200 states have (on average 2.25) internal successors, (450), 199 states have internal predecessors, (450), 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) [2024-09-12 18:03:00,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:03:00,996 INFO L93 Difference]: Finished difference Result 756 states and 810 transitions. [2024-09-12 18:03:00,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 160 states. [2024-09-12 18:03:00,997 INFO L78 Accepts]: Start accepts. Automaton has has 201 states, 200 states have (on average 2.25) internal successors, (450), 199 states have internal predecessors, (450), 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 236 [2024-09-12 18:03:00,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:03:01,000 INFO L225 Difference]: With dead ends: 756 [2024-09-12 18:03:01,000 INFO L226 Difference]: Without dead ends: 591 [2024-09-12 18:03:01,003 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 622 GetRequests, 378 SyntacticMatches, 3 SemanticMatches, 241 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20712 ImplicationChecksByTransitivity, 15.2s TimeCoverageRelationStatistics Valid=4196, Invalid=54610, Unknown=0, NotChecked=0, Total=58806 [2024-09-12 18:03:01,004 INFO L434 NwaCegarLoop]: 22 mSDtfsCounter, 16 mSDsluCounter, 1470 mSDsCounter, 0 mSdLazyCounter, 14020 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 1492 SdHoareTripleChecker+Invalid, 14029 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 14020 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2024-09-12 18:03:01,004 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 1492 Invalid, 14029 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 14020 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2024-09-12 18:03:01,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 591 states. [2024-09-12 18:03:01,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 591 to 590. [2024-09-12 18:03:01,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 590 states, 528 states have (on average 1.0265151515151516) internal successors, (542), 532 states have internal predecessors, (542), 49 states have call successors, (49), 13 states have call predecessors, (49), 12 states have return successors, (48), 44 states have call predecessors, (48), 48 states have call successors, (48) [2024-09-12 18:03:01,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 590 states to 590 states and 639 transitions. [2024-09-12 18:03:01,180 INFO L78 Accepts]: Start accepts. Automaton has 590 states and 639 transitions. Word has length 236 [2024-09-12 18:03:01,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:03:01,180 INFO L474 AbstractCegarLoop]: Abstraction has 590 states and 639 transitions. [2024-09-12 18:03:01,181 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 201 states, 200 states have (on average 2.25) internal successors, (450), 199 states have internal predecessors, (450), 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) [2024-09-12 18:03:01,181 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:03:01,181 INFO L276 IsEmpty]: Start isEmpty. Operand 590 states and 639 transitions. [2024-09-12 18:03:01,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2024-09-12 18:03:01,182 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:03:01,183 INFO L216 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:03:01,199 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2024-09-12 18:03:01,383 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2024-09-12 18:03:01,383 INFO L399 AbstractCegarLoop]: === Iteration 44 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2024-09-12 18:03:01,383 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:03:01,384 INFO L85 PathProgramCache]: Analyzing trace with hash -1041437132, now seen corresponding path program 21 times [2024-09-12 18:03:01,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:03:01,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377621985] [2024-09-12 18:03:01,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:03:01,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:03:01,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:03:05,407 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:03:05,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:03:05,409 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-09-12 18:03:05,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:03:05,413 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-09-12 18:03:05,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:03:05,416 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-09-12 18:03:05,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:03:05,419 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2024-09-12 18:03:05,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:03:05,423 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2024-09-12 18:03:05,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:03:05,426 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2024-09-12 18:03:05,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:03:05,429 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2024-09-12 18:03:05,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:03:05,432 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2024-09-12 18:03:05,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:03:05,436 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2024-09-12 18:03:05,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:03:05,439 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2024-09-12 18:03:05,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:03:05,442 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2024-09-12 18:03:05,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:03:05,446 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2024-09-12 18:03:05,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:03:05,449 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2024-09-12 18:03:05,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:03:05,453 INFO L134 CoverageAnalysis]: Checked inductivity of 1561 backedges. 656 proven. 593 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-09-12 18:03:05,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:03:05,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377621985] [2024-09-12 18:03:05,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377621985] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:03:05,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2134228534] [2024-09-12 18:03:05,453 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-12 18:03:05,454 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:03:05,454 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:03:05,456 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) [2024-09-12 18:03:05,463 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2024-09-12 18:03:05,569 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2024-09-12 18:03:05,569 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 18:03:05,577 INFO L262 TraceCheckSpWp]: Trace formula consists of 512 conjuncts, 162 conjuncts are in the unsatisfiable core [2024-09-12 18:03:05,582 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:03:11,803 INFO L134 CoverageAnalysis]: Checked inductivity of 1561 backedges. 61 proven. 1224 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2024-09-12 18:03:11,803 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:03:22,407 INFO L134 CoverageAnalysis]: Checked inductivity of 1561 backedges. 61 proven. 1224 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2024-09-12 18:03:22,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2134228534] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:03:22,407 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:03:22,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [89, 89, 89] total 258 [2024-09-12 18:03:22,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96744021] [2024-09-12 18:03:22,408 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:03:22,408 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 258 states [2024-09-12 18:03:22,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:03:22,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 258 interpolants. [2024-09-12 18:03:22,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4086, Invalid=62220, Unknown=0, NotChecked=0, Total=66306 [2024-09-12 18:03:22,414 INFO L87 Difference]: Start difference. First operand 590 states and 639 transitions. Second operand has 258 states, 257 states have (on average 2.159533073929961) internal successors, (555), 256 states have internal predecessors, (555), 41 states have call successors, (43), 3 states have call predecessors, (43), 2 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2024-09-12 18:03:37,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:03:37,303 INFO L93 Difference]: Finished difference Result 900 states and 969 transitions. [2024-09-12 18:03:37,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 187 states. [2024-09-12 18:03:37,304 INFO L78 Accepts]: Start accepts. Automaton has has 258 states, 257 states have (on average 2.159533073929961) internal successors, (555), 256 states have internal predecessors, (555), 41 states have call successors, (43), 3 states have call predecessors, (43), 2 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) Word has length 254 [2024-09-12 18:03:37,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:03:37,308 INFO L225 Difference]: With dead ends: 900 [2024-09-12 18:03:37,309 INFO L226 Difference]: Without dead ends: 726 [2024-09-12 18:03:37,312 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 686 GetRequests, 366 SyntacticMatches, 2 SemanticMatches, 318 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38058 ImplicationChecksByTransitivity, 24.0s TimeCoverageRelationStatistics Valid=7166, Invalid=94914, Unknown=0, NotChecked=0, Total=102080 [2024-09-12 18:03:37,313 INFO L434 NwaCegarLoop]: 22 mSDtfsCounter, 14 mSDsluCounter, 1822 mSDsCounter, 0 mSdLazyCounter, 19440 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 1844 SdHoareTripleChecker+Invalid, 19454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 19440 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2024-09-12 18:03:37,313 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 1844 Invalid, 19454 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 19440 Invalid, 0 Unknown, 0 Unchecked, 7.3s Time] [2024-09-12 18:03:37,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 726 states. [2024-09-12 18:03:37,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 726 to 726. [2024-09-12 18:03:37,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 726 states, 649 states have (on average 1.0231124807395995) internal successors, (664), 654 states have internal predecessors, (664), 63 states have call successors, (63), 14 states have call predecessors, (63), 13 states have return successors, (62), 57 states have call predecessors, (62), 62 states have call successors, (62) [2024-09-12 18:03:37,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 726 states to 726 states and 789 transitions. [2024-09-12 18:03:37,539 INFO L78 Accepts]: Start accepts. Automaton has 726 states and 789 transitions. Word has length 254 [2024-09-12 18:03:37,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:03:37,542 INFO L474 AbstractCegarLoop]: Abstraction has 726 states and 789 transitions. [2024-09-12 18:03:37,542 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 258 states, 257 states have (on average 2.159533073929961) internal successors, (555), 256 states have internal predecessors, (555), 41 states have call successors, (43), 3 states have call predecessors, (43), 2 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2024-09-12 18:03:37,542 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:03:37,543 INFO L276 IsEmpty]: Start isEmpty. Operand 726 states and 789 transitions. [2024-09-12 18:03:37,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2024-09-12 18:03:37,545 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:03:37,545 INFO L216 NwaCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:03:37,560 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2024-09-12 18:03:37,745 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,37 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:03:37,746 INFO L399 AbstractCegarLoop]: === Iteration 45 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2024-09-12 18:03:37,746 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:03:37,746 INFO L85 PathProgramCache]: Analyzing trace with hash -771525948, now seen corresponding path program 22 times [2024-09-12 18:03:37,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:03:37,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177069675] [2024-09-12 18:03:37,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:03:37,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:03:37,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:03:42,527 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:03:42,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:03:42,529 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-09-12 18:03:42,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:03:42,533 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-09-12 18:03:42,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:03:42,536 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2024-09-12 18:03:42,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:03:42,540 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-09-12 18:03:42,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:03:42,544 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2024-09-12 18:03:42,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:03:42,547 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2024-09-12 18:03:42,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:03:42,551 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2024-09-12 18:03:42,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:03:42,555 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2024-09-12 18:03:42,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:03:42,558 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2024-09-12 18:03:42,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:03:42,562 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2024-09-12 18:03:42,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:03:42,565 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2024-09-12 18:03:42,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:03:42,568 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2024-09-12 18:03:42,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:03:42,570 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2024-09-12 18:03:42,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:03:42,574 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2024-09-12 18:03:42,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:03:42,579 INFO L134 CoverageAnalysis]: Checked inductivity of 1807 backedges. 769 proven. 674 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-09-12 18:03:42,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:03:42,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177069675] [2024-09-12 18:03:42,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1177069675] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:03:42,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [32617631] [2024-09-12 18:03:42,579 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-12 18:03:42,579 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:03:42,580 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:03:42,581 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) [2024-09-12 18:03:42,582 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2024-09-12 18:03:42,670 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-12 18:03:42,671 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 18:03:42,674 INFO L262 TraceCheckSpWp]: Trace formula consists of 547 conjuncts, 111 conjuncts are in the unsatisfiable core [2024-09-12 18:03:42,679 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:03:46,262 INFO L134 CoverageAnalysis]: Checked inductivity of 1807 backedges. 28 proven. 1415 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-09-12 18:03:46,262 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:03:56,500 INFO L134 CoverageAnalysis]: Checked inductivity of 1807 backedges. 28 proven. 1415 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-09-12 18:03:56,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [32617631] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:03:56,501 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:03:56,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [95, 93, 93] total 231 [2024-09-12 18:03:56,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875578762] [2024-09-12 18:03:56,501 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:03:56,502 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 231 states [2024-09-12 18:03:56,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:03:56,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 231 interpolants. [2024-09-12 18:03:56,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3454, Invalid=49676, Unknown=0, NotChecked=0, Total=53130 [2024-09-12 18:03:56,507 INFO L87 Difference]: Start difference. First operand 726 states and 789 transitions. Second operand has 231 states, 230 states have (on average 2.252173913043478) internal successors, (518), 229 states have internal predecessors, (518), 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) [2024-09-12 18:04:10,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:04:10,366 INFO L93 Difference]: Finished difference Result 1059 states and 1143 transitions. [2024-09-12 18:04:10,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 184 states. [2024-09-12 18:04:10,367 INFO L78 Accepts]: Start accepts. Automaton has has 231 states, 230 states have (on average 2.252173913043478) internal successors, (518), 229 states have internal predecessors, (518), 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 272 [2024-09-12 18:04:10,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:04:10,371 INFO L225 Difference]: With dead ends: 1059 [2024-09-12 18:04:10,371 INFO L226 Difference]: Without dead ends: 872 [2024-09-12 18:04:10,375 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 716 GetRequests, 438 SyntacticMatches, 1 SemanticMatches, 277 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27490 ImplicationChecksByTransitivity, 20.1s TimeCoverageRelationStatistics Valid=5494, Invalid=72068, Unknown=0, NotChecked=0, Total=77562 [2024-09-12 18:04:10,375 INFO L434 NwaCegarLoop]: 24 mSDtfsCounter, 14 mSDsluCounter, 1907 mSDsCounter, 0 mSdLazyCounter, 19224 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 1931 SdHoareTripleChecker+Invalid, 19233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 19224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2024-09-12 18:04:10,375 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 1931 Invalid, 19233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 19224 Invalid, 0 Unknown, 0 Unchecked, 7.3s Time] [2024-09-12 18:04:10,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 872 states. [2024-09-12 18:04:10,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 872 to 871. [2024-09-12 18:04:10,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 871 states, 778 states have (on average 1.0205655526992288) internal successors, (794), 784 states have internal predecessors, (794), 78 states have call successors, (78), 15 states have call predecessors, (78), 14 states have return successors, (77), 71 states have call predecessors, (77), 77 states have call successors, (77) [2024-09-12 18:04:10,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 871 states to 871 states and 949 transitions. [2024-09-12 18:04:10,899 INFO L78 Accepts]: Start accepts. Automaton has 871 states and 949 transitions. Word has length 272 [2024-09-12 18:04:10,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:04:10,900 INFO L474 AbstractCegarLoop]: Abstraction has 871 states and 949 transitions. [2024-09-12 18:04:10,900 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 231 states, 230 states have (on average 2.252173913043478) internal successors, (518), 229 states have internal predecessors, (518), 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) [2024-09-12 18:04:10,900 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:04:10,900 INFO L276 IsEmpty]: Start isEmpty. Operand 871 states and 949 transitions. [2024-09-12 18:04:10,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2024-09-12 18:04:10,902 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:04:10,903 INFO L216 NwaCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:04:10,916 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2024-09-12 18:04:11,103 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,38 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:04:11,103 INFO L399 AbstractCegarLoop]: === Iteration 46 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2024-09-12 18:04:11,104 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:04:11,104 INFO L85 PathProgramCache]: Analyzing trace with hash 1704668084, now seen corresponding path program 23 times [2024-09-12 18:04:11,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:04:11,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793381845] [2024-09-12 18:04:11,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:04:11,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:04:11,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:04:16,462 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:04:16,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:04:16,463 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-09-12 18:04:16,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:04:16,466 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-09-12 18:04:16,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:04:16,469 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-09-12 18:04:16,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:04:16,472 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2024-09-12 18:04:16,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:04:16,475 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2024-09-12 18:04:16,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:04:16,478 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2024-09-12 18:04:16,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:04:16,481 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2024-09-12 18:04:16,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:04:16,483 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2024-09-12 18:04:16,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:04:16,486 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2024-09-12 18:04:16,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:04:16,489 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2024-09-12 18:04:16,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:04:16,491 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2024-09-12 18:04:16,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:04:16,494 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2024-09-12 18:04:16,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:04:16,497 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2024-09-12 18:04:16,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:04:16,500 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2024-09-12 18:04:16,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:04:16,503 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2024-09-12 18:04:16,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:04:16,507 INFO L134 CoverageAnalysis]: Checked inductivity of 2071 backedges. 891 proven. 760 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-09-12 18:04:16,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:04:16,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793381845] [2024-09-12 18:04:16,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793381845] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:04:16,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1283183976] [2024-09-12 18:04:16,507 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-12 18:04:16,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:04:16,508 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:04:16,509 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) [2024-09-12 18:04:16,509 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2024-09-12 18:04:16,618 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 17 check-sat command(s) [2024-09-12 18:04:16,619 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 18:04:16,623 INFO L262 TraceCheckSpWp]: Trace formula consists of 582 conjuncts, 115 conjuncts are in the unsatisfiable core [2024-09-12 18:04:16,628 INFO L285 TraceCheckSpWp]: Computing forward predicates...