./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loops-crafted-1/mono-crafted_3.c --full-output --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --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/loops-crafted-1/mono-crafted_3.c -s /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/certificate-witnesses-artifact/automizer --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4548c451706b7658e6a882e8eef66dc3c360e6aea0e4326d7cc0b87e2b58239c --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 18:16:55,460 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-12 18:16:55,536 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-12 18:16:55,541 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-12 18:16:55,541 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-12 18:16:55,567 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-12 18:16:55,568 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-12 18:16:55,568 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-12 18:16:55,569 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-12 18:16:55,569 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-12 18:16:55,572 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-12 18:16:55,573 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-12 18:16:55,573 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-12 18:16:55,573 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-12 18:16:55,574 INFO L153 SettingsManager]: * Use SBE=true [2024-09-12 18:16:55,574 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-12 18:16:55,574 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-12 18:16:55,575 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-12 18:16:55,575 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-12 18:16:55,579 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-12 18:16:55,580 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-12 18:16:55,580 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-12 18:16:55,584 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-12 18:16:55,585 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-12 18:16:55,585 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-12 18:16:55,585 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-12 18:16:55,585 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-12 18:16:55,586 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-12 18:16:55,586 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-12 18:16:55,586 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-12 18:16:55,586 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-12 18:16:55,587 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-12 18:16:55,587 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-12 18:16:55,587 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-12 18:16:55,588 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-12 18:16:55,588 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-12 18:16:55,588 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-12 18:16:55,588 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-12 18:16:55,589 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-12 18:16:55,589 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-12 18:16:55,589 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-12 18:16:55,590 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-12 18:16:55,590 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4548c451706b7658e6a882e8eef66dc3c360e6aea0e4326d7cc0b87e2b58239c Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2024-09-12 18:16:55,957 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-12 18:16:55,982 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-12 18:16:55,985 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-12 18:16:55,986 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-12 18:16:55,987 INFO L274 PluginConnector]: CDTParser initialized [2024-09-12 18:16:55,992 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/loops-crafted-1/mono-crafted_3.c [2024-09-12 18:16:57,619 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-12 18:16:57,833 INFO L384 CDTParser]: Found 1 translation units. [2024-09-12 18:16:57,833 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loops-crafted-1/mono-crafted_3.c [2024-09-12 18:16:57,846 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/e744d794b/133d7c1fedef4a259f18108cfe48a51b/FLAG56acef56f [2024-09-12 18:16:58,218 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/e744d794b/133d7c1fedef4a259f18108cfe48a51b [2024-09-12 18:16:58,222 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-12 18:16:58,224 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-12 18:16:58,225 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-12 18:16:58,225 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-12 18:16:58,232 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-12 18:16:58,233 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.09 06:16:58" (1/1) ... [2024-09-12 18:16:58,234 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@704aef20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 06:16:58, skipping insertion in model container [2024-09-12 18:16:58,234 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.09 06:16:58" (1/1) ... [2024-09-12 18:16:58,256 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-12 18:16:58,407 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/loops-crafted-1/mono-crafted_3.c[318,331] [2024-09-12 18:16:58,431 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-12 18:16:58,443 INFO L200 MainTranslator]: Completed pre-run [2024-09-12 18:16:58,455 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/loops-crafted-1/mono-crafted_3.c[318,331] [2024-09-12 18:16:58,461 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-12 18:16:58,479 INFO L204 MainTranslator]: Completed translation [2024-09-12 18:16:58,480 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 06:16:58 WrapperNode [2024-09-12 18:16:58,480 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-12 18:16:58,482 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-12 18:16:58,482 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-12 18:16:58,482 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-12 18:16:58,489 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 06:16:58" (1/1) ... [2024-09-12 18:16:58,496 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 06:16:58" (1/1) ... [2024-09-12 18:16:58,502 INFO L138 Inliner]: procedures = 12, calls = 8, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-12 18:16:58,502 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-12 18:16:58,503 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-12 18:16:58,504 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-12 18:16:58,504 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-12 18:16:58,513 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 06:16:58" (1/1) ... [2024-09-12 18:16:58,513 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 06:16:58" (1/1) ... [2024-09-12 18:16:58,518 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 06:16:58" (1/1) ... [2024-09-12 18:16:58,543 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 18:16:58,543 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 06:16:58" (1/1) ... [2024-09-12 18:16:58,543 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 06:16:58" (1/1) ... [2024-09-12 18:16:58,547 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 06:16:58" (1/1) ... [2024-09-12 18:16:58,551 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 06:16:58" (1/1) ... [2024-09-12 18:16:58,555 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 06:16:58" (1/1) ... [2024-09-12 18:16:58,556 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 06:16:58" (1/1) ... [2024-09-12 18:16:58,558 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-12 18:16:58,560 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-12 18:16:58,560 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-12 18:16:58,560 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-12 18:16:58,561 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 06:16:58" (1/1) ... [2024-09-12 18:16:58,567 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-12 18:16:58,581 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:16:58,600 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 18:16:58,607 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 18:16:58,652 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-12 18:16:58,652 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-12 18:16:58,653 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-12 18:16:58,653 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-12 18:16:58,653 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-12 18:16:58,653 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-12 18:16:58,653 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-12 18:16:58,653 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-12 18:16:58,653 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-12 18:16:58,653 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-12 18:16:58,709 INFO L242 CfgBuilder]: Building ICFG [2024-09-12 18:16:58,711 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-12 18:16:58,898 INFO L? ?]: Removed 22 outVars from TransFormulas that were not future-live. [2024-09-12 18:16:58,898 INFO L291 CfgBuilder]: Performing block encoding [2024-09-12 18:16:58,933 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-12 18:16:58,935 INFO L318 CfgBuilder]: Removed 2 assume(true) statements. [2024-09-12 18:16:58,935 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.09 06:16:58 BoogieIcfgContainer [2024-09-12 18:16:58,935 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-12 18:16:58,937 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-12 18:16:58,938 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-12 18:16:58,942 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-12 18:16:58,942 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.09 06:16:58" (1/3) ... [2024-09-12 18:16:58,943 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18a54e30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.09 06:16:58, skipping insertion in model container [2024-09-12 18:16:58,943 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 06:16:58" (2/3) ... [2024-09-12 18:16:58,944 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18a54e30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.09 06:16:58, skipping insertion in model container [2024-09-12 18:16:58,944 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.09 06:16:58" (3/3) ... [2024-09-12 18:16:58,947 INFO L112 eAbstractionObserver]: Analyzing ICFG mono-crafted_3.c [2024-09-12 18:16:58,965 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-12 18:16:58,966 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 13 error locations. [2024-09-12 18:16:59,050 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-12 18:16:59,058 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;@113807c6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-12 18:16:59,058 INFO L337 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2024-09-12 18:16:59,063 INFO L276 IsEmpty]: Start isEmpty. Operand has 43 states, 23 states have (on average 1.826086956521739) internal successors, (42), 36 states have internal predecessors, (42), 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 18:16:59,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-09-12 18:16:59,070 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:16:59,071 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:16:59,072 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-09-12 18:16:59,079 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:16:59,079 INFO L85 PathProgramCache]: Analyzing trace with hash 149999430, now seen corresponding path program 1 times [2024-09-12 18:16:59,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:16:59,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921734095] [2024-09-12 18:16:59,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:16:59,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:16:59,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:16:59,229 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:16:59,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:16:59,249 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 18:16:59,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:16:59,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921734095] [2024-09-12 18:16:59,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921734095] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 18:16:59,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 18:16:59,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-12 18:16:59,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110721804] [2024-09-12 18:16:59,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 18:16:59,260 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-09-12 18:16:59,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:16:59,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-09-12 18:16:59,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-12 18:16:59,289 INFO L87 Difference]: Start difference. First operand has 43 states, 23 states have (on average 1.826086956521739) internal successors, (42), 36 states have internal predecessors, (42), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 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 18:16:59,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:16:59,326 INFO L93 Difference]: Finished difference Result 67 states and 75 transitions. [2024-09-12 18:16:59,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-12 18:16:59,330 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 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 18:16:59,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:16:59,337 INFO L225 Difference]: With dead ends: 67 [2024-09-12 18:16:59,337 INFO L226 Difference]: Without dead ends: 37 [2024-09-12 18:16:59,340 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-12 18:16:59,345 INFO L434 NwaCegarLoop]: 43 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 18:16:59,347 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 43 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 18:16:59,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2024-09-12 18:16:59,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2024-09-12 18:16:59,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 20 states have (on average 1.75) internal successors, (35), 32 states have internal predecessors, (35), 3 states have call successors, (3), 3 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 18:16:59,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 39 transitions. [2024-09-12 18:16:59,389 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 39 transitions. Word has length 8 [2024-09-12 18:16:59,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:16:59,390 INFO L474 AbstractCegarLoop]: Abstraction has 37 states and 39 transitions. [2024-09-12 18:16:59,390 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 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 18:16:59,390 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:16:59,391 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 39 transitions. [2024-09-12 18:16:59,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-09-12 18:16:59,392 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:16:59,392 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:16:59,393 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-12 18:16:59,393 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-09-12 18:16:59,394 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:16:59,397 INFO L85 PathProgramCache]: Analyzing trace with hash 149978288, now seen corresponding path program 1 times [2024-09-12 18:16:59,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:16:59,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215000645] [2024-09-12 18:16:59,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:16:59,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:16:59,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:16:59,517 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:16:59,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:16:59,528 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 18:16:59,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:16:59,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215000645] [2024-09-12 18:16:59,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1215000645] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 18:16:59,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 18:16:59,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-12 18:16:59,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226988057] [2024-09-12 18:16:59,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 18:16:59,533 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-12 18:16:59,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:16:59,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-12 18:16:59,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-12 18:16:59,536 INFO L87 Difference]: Start difference. First operand 37 states and 39 transitions. Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 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 18:16:59,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:16:59,583 INFO L93 Difference]: Finished difference Result 71 states and 77 transitions. [2024-09-12 18:16:59,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-12 18:16:59,585 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 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 18:16:59,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:16:59,586 INFO L225 Difference]: With dead ends: 71 [2024-09-12 18:16:59,587 INFO L226 Difference]: Without dead ends: 39 [2024-09-12 18:16:59,588 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 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 18:16:59,589 INFO L434 NwaCegarLoop]: 36 mSDtfsCounter, 1 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 18:16:59,590 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 65 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 18:16:59,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2024-09-12 18:16:59,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2024-09-12 18:16:59,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 22 states have (on average 1.6818181818181819) internal successors, (37), 34 states have internal predecessors, (37), 3 states have call successors, (3), 3 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 18:16:59,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 41 transitions. [2024-09-12 18:16:59,602 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 41 transitions. Word has length 8 [2024-09-12 18:16:59,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:16:59,603 INFO L474 AbstractCegarLoop]: Abstraction has 39 states and 41 transitions. [2024-09-12 18:16:59,603 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 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 18:16:59,603 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:16:59,605 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 41 transitions. [2024-09-12 18:16:59,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-09-12 18:16:59,605 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:16:59,605 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:16:59,605 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-09-12 18:16:59,606 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-09-12 18:16:59,606 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:16:59,608 INFO L85 PathProgramCache]: Analyzing trace with hash 149979378, now seen corresponding path program 1 times [2024-09-12 18:16:59,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:16:59,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094193701] [2024-09-12 18:16:59,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:16:59,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:16:59,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:16:59,704 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:16:59,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:16:59,717 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 18:16:59,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:16:59,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094193701] [2024-09-12 18:16:59,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094193701] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 18:16:59,720 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 18:16:59,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-12 18:16:59,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444327597] [2024-09-12 18:16:59,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 18:16:59,721 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-09-12 18:16:59,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:16:59,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-09-12 18:16:59,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-09-12 18:16:59,722 INFO L87 Difference]: Start difference. First operand 39 states and 41 transitions. 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 18:16:59,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:16:59,774 INFO L93 Difference]: Finished difference Result 43 states and 45 transitions. [2024-09-12 18:16:59,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-12 18:16:59,775 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 18:16:59,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:16:59,776 INFO L225 Difference]: With dead ends: 43 [2024-09-12 18:16:59,776 INFO L226 Difference]: Without dead ends: 41 [2024-09-12 18:16:59,777 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 18:16:59,778 INFO L434 NwaCegarLoop]: 34 mSDtfsCounter, 1 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 18:16:59,778 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 94 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 18:16:59,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2024-09-12 18:16:59,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2024-09-12 18:16:59,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 24 states have (on average 1.625) internal successors, (39), 36 states have internal predecessors, (39), 3 states have call successors, (3), 3 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 18:16:59,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 43 transitions. [2024-09-12 18:16:59,803 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 43 transitions. Word has length 8 [2024-09-12 18:16:59,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:16:59,803 INFO L474 AbstractCegarLoop]: Abstraction has 41 states and 43 transitions. [2024-09-12 18:16:59,803 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 18:16:59,804 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:16:59,804 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 43 transitions. [2024-09-12 18:16:59,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-09-12 18:16:59,804 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:16:59,805 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:16:59,805 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-09-12 18:16:59,805 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-09-12 18:16:59,805 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:16:59,805 INFO L85 PathProgramCache]: Analyzing trace with hash 706383275, now seen corresponding path program 1 times [2024-09-12 18:16:59,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:16:59,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446947301] [2024-09-12 18:16:59,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:16:59,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:16:59,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:16:59,940 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:16:59,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:16:59,948 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 18:16:59,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:16:59,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446947301] [2024-09-12 18:16:59,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446947301] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:16:59,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2146832096] [2024-09-12 18:16:59,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:16:59,949 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:16:59,951 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:16:59,953 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 18:16:59,954 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 18:17:00,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:17:00,004 INFO L262 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-09-12 18:17:00,010 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:17:00,070 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 18:17:00,074 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:17:00,132 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 18:17:00,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2146832096] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:17:00,133 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:17:00,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-09-12 18:17:00,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176135970] [2024-09-12 18:17:00,134 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:17:00,134 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-09-12 18:17:00,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:17:00,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-09-12 18:17:00,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-09-12 18:17:00,138 INFO L87 Difference]: Start difference. First operand 41 states and 43 transitions. Second operand has 10 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 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 18:17:00,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:17:00,208 INFO L93 Difference]: Finished difference Result 75 states and 83 transitions. [2024-09-12 18:17:00,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-12 18:17:00,208 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 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 12 [2024-09-12 18:17:00,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:17:00,209 INFO L225 Difference]: With dead ends: 75 [2024-09-12 18:17:00,209 INFO L226 Difference]: Without dead ends: 43 [2024-09-12 18:17:00,210 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-09-12 18:17:00,211 INFO L434 NwaCegarLoop]: 31 mSDtfsCounter, 2 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 18:17:00,211 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 202 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 18:17:00,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2024-09-12 18:17:00,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2024-09-12 18:17:00,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 27 states have (on average 1.5185185185185186) internal successors, (41), 38 states have internal predecessors, (41), 3 states have call successors, (3), 3 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 18:17:00,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 45 transitions. [2024-09-12 18:17:00,217 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 45 transitions. Word has length 12 [2024-09-12 18:17:00,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:17:00,217 INFO L474 AbstractCegarLoop]: Abstraction has 43 states and 45 transitions. [2024-09-12 18:17:00,218 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 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 18:17:00,218 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:17:00,218 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 45 transitions. [2024-09-12 18:17:00,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-09-12 18:17:00,218 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:17:00,219 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:17:00,238 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-09-12 18:17:00,422 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:17:00,423 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-09-12 18:17:00,423 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:17:00,424 INFO L85 PathProgramCache]: Analyzing trace with hash 706384365, now seen corresponding path program 1 times [2024-09-12 18:17:00,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:17:00,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90509892] [2024-09-12 18:17:00,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:17:00,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:17:00,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:17:00,509 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:17:00,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:17:00,514 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:17:00,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:17:00,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90509892] [2024-09-12 18:17:00,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90509892] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:17:00,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1018185192] [2024-09-12 18:17:00,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:17:00,516 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:17:00,516 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:17:00,539 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 18:17:00,540 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 18:17:00,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:17:00,570 INFO L262 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-09-12 18:17:00,571 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:17:00,620 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:17:00,620 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-12 18:17:00,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1018185192] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 18:17:00,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-12 18:17:00,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2024-09-12 18:17:00,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106592676] [2024-09-12 18:17:00,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 18:17:00,621 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-12 18:17:00,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:17:00,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-12 18:17:00,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-09-12 18:17:00,625 INFO L87 Difference]: Start difference. First operand 43 states and 45 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 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 18:17:00,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:17:00,673 INFO L93 Difference]: Finished difference Result 49 states and 53 transitions. [2024-09-12 18:17:00,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-12 18:17:00,674 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 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 12 [2024-09-12 18:17:00,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:17:00,676 INFO L225 Difference]: With dead ends: 49 [2024-09-12 18:17:00,676 INFO L226 Difference]: Without dead ends: 48 [2024-09-12 18:17:00,677 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-09-12 18:17:00,682 INFO L434 NwaCegarLoop]: 31 mSDtfsCounter, 2 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 18:17:00,682 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 118 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 18:17:00,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2024-09-12 18:17:00,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 45. [2024-09-12 18:17:00,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 29 states have (on average 1.5172413793103448) internal successors, (44), 40 states have internal predecessors, (44), 3 states have call successors, (3), 3 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 18:17:00,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 48 transitions. [2024-09-12 18:17:00,697 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 48 transitions. Word has length 12 [2024-09-12 18:17:00,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:17:00,697 INFO L474 AbstractCegarLoop]: Abstraction has 45 states and 48 transitions. [2024-09-12 18:17:00,698 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 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 18:17:00,698 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:17:00,698 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 48 transitions. [2024-09-12 18:17:00,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-09-12 18:17:00,699 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:17:00,699 INFO L216 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:17:00,716 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 18:17:00,899 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:17:00,900 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-09-12 18:17:00,900 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:17:00,900 INFO L85 PathProgramCache]: Analyzing trace with hash -1785876952, now seen corresponding path program 1 times [2024-09-12 18:17:00,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:17:00,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134360757] [2024-09-12 18:17:00,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:17:00,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:17:00,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:17:00,939 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:17:00,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:17:00,944 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-09-12 18:17:00,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:17:00,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134360757] [2024-09-12 18:17:00,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134360757] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 18:17:00,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 18:17:00,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-12 18:17:00,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872534808] [2024-09-12 18:17:00,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 18:17:00,946 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-12 18:17:00,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:17:00,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-12 18:17:00,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-12 18:17:00,947 INFO L87 Difference]: Start difference. First operand 45 states and 48 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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 18:17:00,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:17:00,969 INFO L93 Difference]: Finished difference Result 45 states and 48 transitions. [2024-09-12 18:17:00,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-12 18:17:00,970 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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 18:17:00,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:17:00,971 INFO L225 Difference]: With dead ends: 45 [2024-09-12 18:17:00,971 INFO L226 Difference]: Without dead ends: 44 [2024-09-12 18:17:00,972 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 18:17:00,972 INFO L434 NwaCegarLoop]: 33 mSDtfsCounter, 1 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 18:17:00,973 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 65 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 18:17:00,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2024-09-12 18:17:00,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2024-09-12 18:17:00,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 29 states have (on average 1.4827586206896552) internal successors, (43), 39 states have internal predecessors, (43), 3 states have call successors, (3), 3 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 18:17:00,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 47 transitions. [2024-09-12 18:17:00,980 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 47 transitions. Word has length 16 [2024-09-12 18:17:00,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:17:00,980 INFO L474 AbstractCegarLoop]: Abstraction has 44 states and 47 transitions. [2024-09-12 18:17:00,980 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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 18:17:00,980 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:17:00,981 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 47 transitions. [2024-09-12 18:17:00,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-09-12 18:17:00,981 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:17:00,981 INFO L216 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:17:00,981 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-09-12 18:17:00,981 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-09-12 18:17:00,982 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:17:00,982 INFO L85 PathProgramCache]: Analyzing trace with hash 472389393, now seen corresponding path program 1 times [2024-09-12 18:17:00,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:17:00,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799216023] [2024-09-12 18:17:00,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:17:00,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:17:00,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:17:01,044 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:17:01,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:17:01,048 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-12 18:17:01,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:17:01,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799216023] [2024-09-12 18:17:01,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [799216023] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 18:17:01,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 18:17:01,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-12 18:17:01,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604232661] [2024-09-12 18:17:01,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 18:17:01,050 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-09-12 18:17:01,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:17:01,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-09-12 18:17:01,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-09-12 18:17:01,051 INFO L87 Difference]: Start difference. First operand 44 states and 47 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 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 18:17:01,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:17:01,080 INFO L93 Difference]: Finished difference Result 44 states and 47 transitions. [2024-09-12 18:17:01,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-12 18:17:01,080 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 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 17 [2024-09-12 18:17:01,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:17:01,081 INFO L225 Difference]: With dead ends: 44 [2024-09-12 18:17:01,081 INFO L226 Difference]: Without dead ends: 43 [2024-09-12 18:17:01,081 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 18:17:01,082 INFO L434 NwaCegarLoop]: 30 mSDtfsCounter, 0 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 18:17:01,083 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 85 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 18:17:01,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2024-09-12 18:17:01,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2024-09-12 18:17:01,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 29 states have (on average 1.4482758620689655) internal successors, (42), 38 states have internal predecessors, (42), 3 states have call successors, (3), 3 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 18:17:01,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 46 transitions. [2024-09-12 18:17:01,089 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 46 transitions. Word has length 17 [2024-09-12 18:17:01,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:17:01,089 INFO L474 AbstractCegarLoop]: Abstraction has 43 states and 46 transitions. [2024-09-12 18:17:01,090 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 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 18:17:01,090 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:17:01,090 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 46 transitions. [2024-09-12 18:17:01,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-09-12 18:17:01,091 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:17:01,091 INFO L216 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:17:01,091 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-09-12 18:17:01,091 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-09-12 18:17:01,091 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:17:01,091 INFO L85 PathProgramCache]: Analyzing trace with hash 1759169354, now seen corresponding path program 1 times [2024-09-12 18:17:01,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:17:01,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833089814] [2024-09-12 18:17:01,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:17:01,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:17:01,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:17:01,142 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:17:01,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:17:01,145 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-09-12 18:17:01,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:17:01,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833089814] [2024-09-12 18:17:01,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [833089814] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 18:17:01,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 18:17:01,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-12 18:17:01,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923269045] [2024-09-12 18:17:01,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 18:17:01,147 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-09-12 18:17:01,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:17:01,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-09-12 18:17:01,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-09-12 18:17:01,148 INFO L87 Difference]: Start difference. First operand 43 states and 46 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 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 18:17:01,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:17:01,182 INFO L93 Difference]: Finished difference Result 60 states and 64 transitions. [2024-09-12 18:17:01,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-12 18:17:01,183 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 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 18 [2024-09-12 18:17:01,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:17:01,184 INFO L225 Difference]: With dead ends: 60 [2024-09-12 18:17:01,184 INFO L226 Difference]: Without dead ends: 53 [2024-09-12 18:17:01,185 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 18:17:01,185 INFO L434 NwaCegarLoop]: 26 mSDtfsCounter, 13 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 18:17:01,186 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 67 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 18:17:01,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2024-09-12 18:17:01,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 48. [2024-09-12 18:17:01,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 35 states have (on average 1.457142857142857) internal successors, (51), 43 states have internal predecessors, (51), 3 states have call successors, (3), 3 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 18:17:01,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 55 transitions. [2024-09-12 18:17:01,201 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 55 transitions. Word has length 18 [2024-09-12 18:17:01,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:17:01,202 INFO L474 AbstractCegarLoop]: Abstraction has 48 states and 55 transitions. [2024-09-12 18:17:01,202 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 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 18:17:01,202 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:17:01,202 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 55 transitions. [2024-09-12 18:17:01,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-09-12 18:17:01,203 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:17:01,203 INFO L216 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:17:01,203 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-09-12 18:17:01,203 INFO L399 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-09-12 18:17:01,203 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:17:01,204 INFO L85 PathProgramCache]: Analyzing trace with hash -1300324813, now seen corresponding path program 1 times [2024-09-12 18:17:01,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:17:01,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364918491] [2024-09-12 18:17:01,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:17:01,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:17:01,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:17:01,262 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:17:01,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:17:01,275 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-09-12 18:17:01,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:17:01,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364918491] [2024-09-12 18:17:01,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364918491] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 18:17:01,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 18:17:01,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-12 18:17:01,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880321329] [2024-09-12 18:17:01,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 18:17:01,276 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-09-12 18:17:01,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:17:01,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-09-12 18:17:01,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-09-12 18:17:01,277 INFO L87 Difference]: Start difference. First operand 48 states and 55 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 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 18:17:01,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:17:01,323 INFO L93 Difference]: Finished difference Result 57 states and 65 transitions. [2024-09-12 18:17:01,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-12 18:17:01,324 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 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 19 [2024-09-12 18:17:01,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:17:01,326 INFO L225 Difference]: With dead ends: 57 [2024-09-12 18:17:01,326 INFO L226 Difference]: Without dead ends: 56 [2024-09-12 18:17:01,326 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 18:17:01,327 INFO L434 NwaCegarLoop]: 31 mSDtfsCounter, 0 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 18:17:01,327 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 85 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 18:17:01,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2024-09-12 18:17:01,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2024-09-12 18:17:01,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 43 states have (on average 1.3953488372093024) internal successors, (60), 51 states have internal predecessors, (60), 3 states have call successors, (3), 3 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 18:17:01,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 64 transitions. [2024-09-12 18:17:01,344 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 64 transitions. Word has length 19 [2024-09-12 18:17:01,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:17:01,345 INFO L474 AbstractCegarLoop]: Abstraction has 56 states and 64 transitions. [2024-09-12 18:17:01,345 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 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 18:17:01,345 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:17:01,345 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 64 transitions. [2024-09-12 18:17:01,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-09-12 18:17:01,346 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:17:01,346 INFO L216 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:17:01,346 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-09-12 18:17:01,346 INFO L399 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-09-12 18:17:01,347 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:17:01,347 INFO L85 PathProgramCache]: Analyzing trace with hash -1666418759, now seen corresponding path program 1 times [2024-09-12 18:17:01,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:17:01,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041602216] [2024-09-12 18:17:01,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:17:01,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:17:01,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:17:01,408 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:17:01,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:17:01,411 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-09-12 18:17:01,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:17:01,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041602216] [2024-09-12 18:17:01,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041602216] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 18:17:01,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 18:17:01,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-12 18:17:01,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733543261] [2024-09-12 18:17:01,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 18:17:01,412 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-09-12 18:17:01,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:17:01,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-09-12 18:17:01,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-09-12 18:17:01,413 INFO L87 Difference]: Start difference. First operand 56 states and 64 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 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 18:17:01,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:17:01,449 INFO L93 Difference]: Finished difference Result 57 states and 64 transitions. [2024-09-12 18:17:01,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-12 18:17:01,450 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 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 22 [2024-09-12 18:17:01,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:17:01,451 INFO L225 Difference]: With dead ends: 57 [2024-09-12 18:17:01,451 INFO L226 Difference]: Without dead ends: 56 [2024-09-12 18:17:01,451 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 18:17:01,452 INFO L434 NwaCegarLoop]: 30 mSDtfsCounter, 1 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 18:17:01,452 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 82 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 18:17:01,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2024-09-12 18:17:01,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2024-09-12 18:17:01,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 43 states have (on average 1.372093023255814) internal successors, (59), 51 states have internal predecessors, (59), 3 states have call successors, (3), 3 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 18:17:01,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 63 transitions. [2024-09-12 18:17:01,470 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 63 transitions. Word has length 22 [2024-09-12 18:17:01,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:17:01,470 INFO L474 AbstractCegarLoop]: Abstraction has 56 states and 63 transitions. [2024-09-12 18:17:01,470 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 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 18:17:01,471 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:17:01,471 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 63 transitions. [2024-09-12 18:17:01,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-09-12 18:17:01,471 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:17:01,472 INFO L216 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:17:01,472 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-09-12 18:17:01,472 INFO L399 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-09-12 18:17:01,473 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:17:01,474 INFO L85 PathProgramCache]: Analyzing trace with hash -1666417669, now seen corresponding path program 1 times [2024-09-12 18:17:01,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:17:01,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495539075] [2024-09-12 18:17:01,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:17:01,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:17:01,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:17:01,557 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:17:01,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:17:01,561 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:17:01,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:17:01,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495539075] [2024-09-12 18:17:01,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495539075] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:17:01,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [527026428] [2024-09-12 18:17:01,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:17:01,562 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:17:01,562 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:17:01,564 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 18:17:01,566 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 18:17:01,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:17:01,618 INFO L262 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-09-12 18:17:01,620 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:17:01,683 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:17:01,686 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:17:01,774 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:17:01,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [527026428] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:17:01,775 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:17:01,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2024-09-12 18:17:01,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260622933] [2024-09-12 18:17:01,776 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:17:01,776 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-09-12 18:17:01,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:17:01,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-09-12 18:17:01,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2024-09-12 18:17:01,778 INFO L87 Difference]: Start difference. First operand 56 states and 63 transitions. Second operand has 14 states, 14 states have (on average 2.5) internal successors, (35), 14 states have internal predecessors, (35), 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 18:17:01,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:17:01,853 INFO L93 Difference]: Finished difference Result 109 states and 125 transitions. [2024-09-12 18:17:01,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-09-12 18:17:01,856 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.5) internal successors, (35), 14 states have internal predecessors, (35), 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 22 [2024-09-12 18:17:01,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:17:01,857 INFO L225 Difference]: With dead ends: 109 [2024-09-12 18:17:01,857 INFO L226 Difference]: Without dead ends: 68 [2024-09-12 18:17:01,857 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2024-09-12 18:17:01,858 INFO L434 NwaCegarLoop]: 30 mSDtfsCounter, 0 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 18:17:01,858 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 170 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 18:17:01,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2024-09-12 18:17:01,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2024-09-12 18:17:01,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 55 states have (on average 1.290909090909091) internal successors, (71), 63 states have internal predecessors, (71), 3 states have call successors, (3), 3 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 18:17:01,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 75 transitions. [2024-09-12 18:17:01,877 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 75 transitions. Word has length 22 [2024-09-12 18:17:01,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:17:01,877 INFO L474 AbstractCegarLoop]: Abstraction has 68 states and 75 transitions. [2024-09-12 18:17:01,877 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.5) internal successors, (35), 14 states have internal predecessors, (35), 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 18:17:01,878 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:17:01,878 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 75 transitions. [2024-09-12 18:17:01,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-09-12 18:17:01,883 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:17:01,883 INFO L216 NwaCegarLoop]: trace histogram [7, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:17:01,902 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 18:17:02,083 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-09-12 18:17:02,084 INFO L399 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-09-12 18:17:02,084 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:17:02,084 INFO L85 PathProgramCache]: Analyzing trace with hash -774966100, now seen corresponding path program 2 times [2024-09-12 18:17:02,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:17:02,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931471392] [2024-09-12 18:17:02,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:17:02,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:17:02,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:17:02,293 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:17:02,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:17:02,298 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 17 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:17:02,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:17:02,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931471392] [2024-09-12 18:17:02,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931471392] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:17:02,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1102276976] [2024-09-12 18:17:02,299 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 18:17:02,299 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:17:02,299 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:17:02,301 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 18:17:02,303 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 18:17:02,350 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 18:17:02,351 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 18:17:02,352 INFO L262 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-09-12 18:17:02,353 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:17:02,420 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 17 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:17:02,420 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:17:02,624 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 17 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:17:02,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1102276976] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:17:02,624 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:17:02,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 26 [2024-09-12 18:17:02,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091077718] [2024-09-12 18:17:02,624 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:17:02,625 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-09-12 18:17:02,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:17:02,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-09-12 18:17:02,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=182, Invalid=468, Unknown=0, NotChecked=0, Total=650 [2024-09-12 18:17:02,626 INFO L87 Difference]: Start difference. First operand 68 states and 75 transitions. Second operand has 26 states, 26 states have (on average 2.269230769230769) internal successors, (59), 26 states have internal predecessors, (59), 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 18:17:02,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:17:02,751 INFO L93 Difference]: Finished difference Result 133 states and 152 transitions. [2024-09-12 18:17:02,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-09-12 18:17:02,751 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.269230769230769) internal successors, (59), 26 states have internal predecessors, (59), 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 34 [2024-09-12 18:17:02,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:17:02,752 INFO L225 Difference]: With dead ends: 133 [2024-09-12 18:17:02,752 INFO L226 Difference]: Without dead ends: 92 [2024-09-12 18:17:02,753 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=182, Invalid=468, Unknown=0, NotChecked=0, Total=650 [2024-09-12 18:17:02,753 INFO L434 NwaCegarLoop]: 30 mSDtfsCounter, 0 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 252 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 18:17:02,753 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 252 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 18:17:02,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2024-09-12 18:17:02,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2024-09-12 18:17:02,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 79 states have (on average 1.2025316455696202) internal successors, (95), 87 states have internal predecessors, (95), 3 states have call successors, (3), 3 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 18:17:02,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 99 transitions. [2024-09-12 18:17:02,771 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 99 transitions. Word has length 34 [2024-09-12 18:17:02,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:17:02,772 INFO L474 AbstractCegarLoop]: Abstraction has 92 states and 99 transitions. [2024-09-12 18:17:02,772 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.269230769230769) internal successors, (59), 26 states have internal predecessors, (59), 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 18:17:02,772 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:17:02,772 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 99 transitions. [2024-09-12 18:17:02,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-09-12 18:17:02,773 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:17:02,773 INFO L216 NwaCegarLoop]: trace histogram [13, 12, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:17:02,791 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 18:17:02,974 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:17:02,974 INFO L399 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-09-12 18:17:02,975 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:17:02,975 INFO L85 PathProgramCache]: Analyzing trace with hash 808755598, now seen corresponding path program 3 times [2024-09-12 18:17:02,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:17:02,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218049302] [2024-09-12 18:17:02,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:17:02,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:17:02,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:17:03,462 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:17:03,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:17:03,466 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 35 proven. 242 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:17:03,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:17:03,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218049302] [2024-09-12 18:17:03,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218049302] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:17:03,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [308830254] [2024-09-12 18:17:03,467 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-12 18:17:03,467 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:17:03,467 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:17:03,477 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 18:17:03,479 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 18:17:03,523 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-09-12 18:17:03,524 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 18:17:03,524 INFO L262 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-09-12 18:17:03,526 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:17:03,596 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 242 trivial. 0 not checked. [2024-09-12 18:17:03,597 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-12 18:17:03,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [308830254] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 18:17:03,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-12 18:17:03,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [25] total 28 [2024-09-12 18:17:03,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61124604] [2024-09-12 18:17:03,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 18:17:03,598 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-12 18:17:03,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:17:03,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-12 18:17:03,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=582, Unknown=0, NotChecked=0, Total=756 [2024-09-12 18:17:03,601 INFO L87 Difference]: Start difference. First operand 92 states and 99 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 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 18:17:03,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:17:03,641 INFO L93 Difference]: Finished difference Result 123 states and 135 transitions. [2024-09-12 18:17:03,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-12 18:17:03,641 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), 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 58 [2024-09-12 18:17:03,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:17:03,644 INFO L225 Difference]: With dead ends: 123 [2024-09-12 18:17:03,644 INFO L226 Difference]: Without dead ends: 86 [2024-09-12 18:17:03,644 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 173 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=174, Invalid=582, Unknown=0, NotChecked=0, Total=756 [2024-09-12 18:17:03,645 INFO L434 NwaCegarLoop]: 29 mSDtfsCounter, 2 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 18:17:03,645 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 103 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 18:17:03,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2024-09-12 18:17:03,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2024-09-12 18:17:03,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 74 states have (on average 1.1756756756756757) internal successors, (87), 81 states have internal predecessors, (87), 3 states have call successors, (3), 3 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 18:17:03,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 91 transitions. [2024-09-12 18:17:03,664 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 91 transitions. Word has length 58 [2024-09-12 18:17:03,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:17:03,664 INFO L474 AbstractCegarLoop]: Abstraction has 86 states and 91 transitions. [2024-09-12 18:17:03,664 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), 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 18:17:03,664 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:17:03,665 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 91 transitions. [2024-09-12 18:17:03,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-09-12 18:17:03,669 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:17:03,669 INFO L216 NwaCegarLoop]: trace histogram [12, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:17:03,686 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-09-12 18:17:03,869 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 18:17:03,870 INFO L399 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-09-12 18:17:03,870 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:17:03,870 INFO L85 PathProgramCache]: Analyzing trace with hash -698413951, now seen corresponding path program 1 times [2024-09-12 18:17:03,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:17:03,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897548016] [2024-09-12 18:17:03,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:17:03,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:17:03,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:17:04,303 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:17:04,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:17:04,307 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 12 proven. 242 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:17:04,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:17:04,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897548016] [2024-09-12 18:17:04,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897548016] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:17:04,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1690351783] [2024-09-12 18:17:04,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:17:04,307 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:17:04,307 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:17:04,309 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 18:17:04,316 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 18:17:04,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:17:04,367 INFO L262 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-09-12 18:17:04,369 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:17:04,461 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 12 proven. 242 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:17:04,462 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:17:05,112 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 12 proven. 242 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:17:05,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1690351783] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:17:05,112 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:17:05,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 50 [2024-09-12 18:17:05,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141739371] [2024-09-12 18:17:05,113 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:17:05,113 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2024-09-12 18:17:05,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:17:05,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2024-09-12 18:17:05,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=650, Invalid=1800, Unknown=0, NotChecked=0, Total=2450 [2024-09-12 18:17:05,117 INFO L87 Difference]: Start difference. First operand 86 states and 91 transitions. Second operand has 50 states, 50 states have (on average 2.16) internal successors, (108), 50 states have internal predecessors, (108), 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 18:17:05,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:17:05,290 INFO L93 Difference]: Finished difference Result 169 states and 190 transitions. [2024-09-12 18:17:05,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2024-09-12 18:17:05,291 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 2.16) internal successors, (108), 50 states have internal predecessors, (108), 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 59 [2024-09-12 18:17:05,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:17:05,292 INFO L225 Difference]: With dead ends: 169 [2024-09-12 18:17:05,292 INFO L226 Difference]: Without dead ends: 134 [2024-09-12 18:17:05,294 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 746 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=650, Invalid=1800, Unknown=0, NotChecked=0, Total=2450 [2024-09-12 18:17:05,294 INFO L434 NwaCegarLoop]: 29 mSDtfsCounter, 0 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 18:17:05,294 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 185 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 18:17:05,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2024-09-12 18:17:05,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2024-09-12 18:17:05,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 122 states have (on average 1.1065573770491803) internal successors, (135), 129 states have internal predecessors, (135), 3 states have call successors, (3), 3 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 18:17:05,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 139 transitions. [2024-09-12 18:17:05,311 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 139 transitions. Word has length 59 [2024-09-12 18:17:05,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:17:05,311 INFO L474 AbstractCegarLoop]: Abstraction has 134 states and 139 transitions. [2024-09-12 18:17:05,312 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 2.16) internal successors, (108), 50 states have internal predecessors, (108), 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 18:17:05,321 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:17:05,321 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 139 transitions. [2024-09-12 18:17:05,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-09-12 18:17:05,322 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:17:05,322 INFO L216 NwaCegarLoop]: trace histogram [24, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:17:05,337 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-09-12 18:17:05,524 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 18:17:05,525 INFO L399 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-09-12 18:17:05,525 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:17:05,525 INFO L85 PathProgramCache]: Analyzing trace with hash -387269315, now seen corresponding path program 2 times [2024-09-12 18:17:05,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:17:05,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50244650] [2024-09-12 18:17:05,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:17:05,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:17:05,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:17:06,865 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:17:06,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:17:06,871 INFO L134 CoverageAnalysis]: Checked inductivity of 1082 backedges. 24 proven. 1058 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:17:06,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:17:06,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50244650] [2024-09-12 18:17:06,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50244650] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:17:06,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1722276608] [2024-09-12 18:17:06,872 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 18:17:06,872 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:17:06,872 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:17:06,874 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 18:17:06,875 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 18:17:06,938 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 18:17:06,938 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 18:17:06,940 INFO L262 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-09-12 18:17:06,943 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:17:07,133 INFO L134 CoverageAnalysis]: Checked inductivity of 1082 backedges. 24 proven. 1058 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:17:07,134 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:17:08,953 INFO L134 CoverageAnalysis]: Checked inductivity of 1082 backedges. 24 proven. 1058 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:17:08,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1722276608] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:17:08,953 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:17:08,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49, 49] total 98 [2024-09-12 18:17:08,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664001669] [2024-09-12 18:17:08,954 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:17:08,954 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 98 states [2024-09-12 18:17:08,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:17:08,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2024-09-12 18:17:08,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2450, Invalid=7056, Unknown=0, NotChecked=0, Total=9506 [2024-09-12 18:17:08,969 INFO L87 Difference]: Start difference. First operand 134 states and 139 transitions. Second operand has 98 states, 98 states have (on average 2.0816326530612246) internal successors, (204), 98 states have internal predecessors, (204), 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 18:17:09,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:17:09,291 INFO L93 Difference]: Finished difference Result 265 states and 298 transitions. [2024-09-12 18:17:09,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2024-09-12 18:17:09,292 INFO L78 Accepts]: Start accepts. Automaton has has 98 states, 98 states have (on average 2.0816326530612246) internal successors, (204), 98 states have internal predecessors, (204), 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 107 [2024-09-12 18:17:09,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:17:09,294 INFO L225 Difference]: With dead ends: 265 [2024-09-12 18:17:09,294 INFO L226 Difference]: Without dead ends: 230 [2024-09-12 18:17:09,296 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2942 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=2450, Invalid=7056, Unknown=0, NotChecked=0, Total=9506 [2024-09-12 18:17:09,297 INFO L434 NwaCegarLoop]: 29 mSDtfsCounter, 0 mSDsluCounter, 249 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 278 SdHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 18:17:09,297 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 278 Invalid, 232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 232 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 18:17:09,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2024-09-12 18:17:09,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 230. [2024-09-12 18:17:09,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 218 states have (on average 1.0596330275229358) internal successors, (231), 225 states have internal predecessors, (231), 3 states have call successors, (3), 3 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 18:17:09,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 235 transitions. [2024-09-12 18:17:09,320 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 235 transitions. Word has length 107 [2024-09-12 18:17:09,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:17:09,320 INFO L474 AbstractCegarLoop]: Abstraction has 230 states and 235 transitions. [2024-09-12 18:17:09,320 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 98 states, 98 states have (on average 2.0816326530612246) internal successors, (204), 98 states have internal predecessors, (204), 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 18:17:09,321 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:17:09,321 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 235 transitions. [2024-09-12 18:17:09,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2024-09-12 18:17:09,323 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:17:09,323 INFO L216 NwaCegarLoop]: trace histogram [48, 47, 47, 47, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:17:09,342 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 18:17:09,527 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 18:17:09,528 INFO L399 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-09-12 18:17:09,528 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:17:09,528 INFO L85 PathProgramCache]: Analyzing trace with hash 691627701, now seen corresponding path program 3 times [2024-09-12 18:17:09,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:17:09,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014483855] [2024-09-12 18:17:09,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:17:09,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:17:09,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:17:13,657 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:17:13,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:17:13,663 INFO L134 CoverageAnalysis]: Checked inductivity of 4466 backedges. 48 proven. 4418 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:17:13,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:17:13,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014483855] [2024-09-12 18:17:13,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014483855] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:17:13,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1910895458] [2024-09-12 18:17:13,664 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-12 18:17:13,664 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:17:13,665 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:17:13,667 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 18:17:13,668 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 18:17:13,723 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-09-12 18:17:13,724 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 18:17:13,724 INFO L262 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-09-12 18:17:13,732 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:17:13,867 INFO L134 CoverageAnalysis]: Checked inductivity of 4466 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 4418 trivial. 0 not checked. [2024-09-12 18:17:13,868 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-12 18:17:13,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1910895458] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 18:17:13,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-12 18:17:13,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [97] total 99 [2024-09-12 18:17:13,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100617102] [2024-09-12 18:17:13,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 18:17:13,869 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-09-12 18:17:13,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:17:13,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-09-12 18:17:13,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2452, Invalid=7250, Unknown=0, NotChecked=0, Total=9702 [2024-09-12 18:17:13,873 INFO L87 Difference]: Start difference. First operand 230 states and 235 transitions. Second operand has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 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 18:17:13,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:17:13,927 INFO L93 Difference]: Finished difference Result 230 states and 235 transitions. [2024-09-12 18:17:13,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-12 18:17:13,928 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), 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 203 [2024-09-12 18:17:13,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:17:13,931 INFO L225 Difference]: With dead ends: 230 [2024-09-12 18:17:13,931 INFO L226 Difference]: Without dead ends: 229 [2024-09-12 18:17:13,934 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 301 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2302 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=2452, Invalid=7250, Unknown=0, NotChecked=0, Total=9702 [2024-09-12 18:17:13,935 INFO L434 NwaCegarLoop]: 24 mSDtfsCounter, 11 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 18:17:13,935 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 57 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 18:17:13,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2024-09-12 18:17:13,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 229. [2024-09-12 18:17:13,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 218 states have (on average 1.0504587155963303) internal successors, (229), 224 states have internal predecessors, (229), 3 states have call successors, (3), 3 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 18:17:13,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 233 transitions. [2024-09-12 18:17:13,959 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 233 transitions. Word has length 203 [2024-09-12 18:17:13,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:17:13,960 INFO L474 AbstractCegarLoop]: Abstraction has 229 states and 233 transitions. [2024-09-12 18:17:13,960 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), 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 18:17:13,961 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:17:13,961 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 233 transitions. [2024-09-12 18:17:13,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2024-09-12 18:17:13,965 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:17:13,966 INFO L216 NwaCegarLoop]: trace histogram [48, 47, 47, 47, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:17:13,984 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-09-12 18:17:14,173 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 18:17:14,174 INFO L399 AbstractCegarLoop]: === Iteration 17 === Targeting mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-09-12 18:17:14,174 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:17:14,174 INFO L85 PathProgramCache]: Analyzing trace with hash -34377670, now seen corresponding path program 1 times [2024-09-12 18:17:14,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:17:14,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870183800] [2024-09-12 18:17:14,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:17:14,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:17:14,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:17:14,307 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:17:14,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:17:14,310 INFO L134 CoverageAnalysis]: Checked inductivity of 4466 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4466 trivial. 0 not checked. [2024-09-12 18:17:14,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:17:14,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870183800] [2024-09-12 18:17:14,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870183800] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 18:17:14,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 18:17:14,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-12 18:17:14,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29043434] [2024-09-12 18:17:14,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 18:17:14,312 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-09-12 18:17:14,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:17:14,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-09-12 18:17:14,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-09-12 18:17:14,313 INFO L87 Difference]: Start difference. First operand 229 states and 233 transitions. Second operand has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 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 18:17:14,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:17:14,349 INFO L93 Difference]: Finished difference Result 231 states and 233 transitions. [2024-09-12 18:17:14,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-12 18:17:14,349 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 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 204 [2024-09-12 18:17:14,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:17:14,351 INFO L225 Difference]: With dead ends: 231 [2024-09-12 18:17:14,351 INFO L226 Difference]: Without dead ends: 229 [2024-09-12 18:17:14,352 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 18:17:14,352 INFO L434 NwaCegarLoop]: 29 mSDtfsCounter, 2 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 18:17:14,353 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 73 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 18:17:14,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2024-09-12 18:17:14,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 229. [2024-09-12 18:17:14,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 218 states have (on average 1.0412844036697249) internal successors, (227), 224 states have internal predecessors, (227), 3 states have call successors, (3), 3 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 18:17:14,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 231 transitions. [2024-09-12 18:17:14,386 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 231 transitions. Word has length 204 [2024-09-12 18:17:14,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:17:14,387 INFO L474 AbstractCegarLoop]: Abstraction has 229 states and 231 transitions. [2024-09-12 18:17:14,387 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 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 18:17:14,387 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:17:14,387 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 231 transitions. [2024-09-12 18:17:14,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2024-09-12 18:17:14,390 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:17:14,390 INFO L216 NwaCegarLoop]: trace histogram [49, 47, 47, 47, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:17:14,390 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-09-12 18:17:14,390 INFO L399 AbstractCegarLoop]: === Iteration 18 === Targeting mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-09-12 18:17:14,390 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:17:14,390 INFO L85 PathProgramCache]: Analyzing trace with hash -1027535487, now seen corresponding path program 1 times [2024-09-12 18:17:14,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:17:14,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944801408] [2024-09-12 18:17:14,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:17:14,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:17:14,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:17:14,521 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:17:14,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:17:14,525 INFO L134 CoverageAnalysis]: Checked inductivity of 4518 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 4418 trivial. 0 not checked. [2024-09-12 18:17:14,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:17:14,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944801408] [2024-09-12 18:17:14,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [944801408] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:17:14,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [690778092] [2024-09-12 18:17:14,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:17:14,526 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:17:14,526 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:17:14,527 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 18:17:14,531 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 18:17:14,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:17:14,625 INFO L262 TraceCheckSpWp]: Trace formula consists of 436 conjuncts, 96 conjuncts are in the unsatisfiable core [2024-09-12 18:17:14,631 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:17:17,407 INFO L134 CoverageAnalysis]: Checked inductivity of 4518 backedges. 96 proven. 4418 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-12 18:17:17,408 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:17:23,575 INFO L134 CoverageAnalysis]: Checked inductivity of 4518 backedges. 96 proven. 4418 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-12 18:17:23,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [690778092] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:17:23,575 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:17:23,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 97, 97] total 196 [2024-09-12 18:17:23,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269681384] [2024-09-12 18:17:23,576 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:17:23,578 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 196 states [2024-09-12 18:17:23,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:17:23,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 196 interpolants. [2024-09-12 18:17:23,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9322, Invalid=28898, Unknown=0, NotChecked=0, Total=38220 [2024-09-12 18:17:23,587 INFO L87 Difference]: Start difference. First operand 229 states and 231 transitions. Second operand has 196 states, 196 states have (on average 2.0714285714285716) internal successors, (406), 196 states have internal predecessors, (406), 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 18:17:33,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:17:33,419 INFO L93 Difference]: Finished difference Result 478 states and 535 transitions. [2024-09-12 18:17:33,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 195 states. [2024-09-12 18:17:33,420 INFO L78 Accepts]: Start accepts. Automaton has has 196 states, 196 states have (on average 2.0714285714285716) internal successors, (406), 196 states have internal predecessors, (406), 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 205 [2024-09-12 18:17:33,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:17:33,423 INFO L225 Difference]: With dead ends: 478 [2024-09-12 18:17:33,423 INFO L226 Difference]: Without dead ends: 444 [2024-09-12 18:17:33,432 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 605 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 383 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40048 ImplicationChecksByTransitivity, 17.4s TimeCoverageRelationStatistics Valid=27987, Invalid=119853, Unknown=0, NotChecked=0, Total=147840 [2024-09-12 18:17:33,433 INFO L434 NwaCegarLoop]: 24 mSDtfsCounter, 19 mSDsluCounter, 331 mSDsCounter, 0 mSdLazyCounter, 635 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 355 SdHoareTripleChecker+Invalid, 638 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 635 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-12 18:17:33,434 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 355 Invalid, 638 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 635 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-12 18:17:33,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2024-09-12 18:17:33,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 440. [2024-09-12 18:17:33,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 440 states, 429 states have (on average 1.034965034965035) internal successors, (444), 435 states have internal predecessors, (444), 3 states have call successors, (3), 3 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 18:17:33,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 448 transitions. [2024-09-12 18:17:33,474 INFO L78 Accepts]: Start accepts. Automaton has 440 states and 448 transitions. Word has length 205 [2024-09-12 18:17:33,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:17:33,474 INFO L474 AbstractCegarLoop]: Abstraction has 440 states and 448 transitions. [2024-09-12 18:17:33,475 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 196 states, 196 states have (on average 2.0714285714285716) internal successors, (406), 196 states have internal predecessors, (406), 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 18:17:33,475 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:17:33,476 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states and 448 transitions. [2024-09-12 18:17:33,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 402 [2024-09-12 18:17:33,480 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:17:33,481 INFO L216 NwaCegarLoop]: trace histogram [96, 95, 95, 95, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:17:33,498 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 18:17:33,684 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-09-12 18:17:33,685 INFO L399 AbstractCegarLoop]: === Iteration 19 === Targeting mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-09-12 18:17:33,685 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:17:33,685 INFO L85 PathProgramCache]: Analyzing trace with hash -323185205, now seen corresponding path program 1 times [2024-09-12 18:17:33,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:17:33,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464021712] [2024-09-12 18:17:33,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:17:33,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:17:33,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:17:48,808 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:17:48,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:17:48,819 INFO L134 CoverageAnalysis]: Checked inductivity of 18148 backedges. 96 proven. 18050 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-12 18:17:48,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:17:48,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464021712] [2024-09-12 18:17:48,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464021712] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:17:48,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1014608418] [2024-09-12 18:17:48,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:17:48,820 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:17:48,820 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:17:48,821 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 18:17:48,822 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 18:17:48,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:17:48,971 INFO L262 TraceCheckSpWp]: Trace formula consists of 830 conjuncts, 192 conjuncts are in the unsatisfiable core [2024-09-12 18:17:48,979 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:17:49,590 INFO L134 CoverageAnalysis]: Checked inductivity of 18148 backedges. 96 proven. 18050 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-12 18:17:49,590 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:18:13,254 INFO L134 CoverageAnalysis]: Checked inductivity of 18148 backedges. 96 proven. 18050 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-12 18:18:13,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1014608418] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:18:13,254 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:18:13,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [193, 193, 193] total 386 [2024-09-12 18:18:13,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13480253] [2024-09-12 18:18:13,254 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:18:13,256 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 386 states [2024-09-12 18:18:13,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:18:13,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 386 interpolants. [2024-09-12 18:18:13,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37442, Invalid=111168, Unknown=0, NotChecked=0, Total=148610 [2024-09-12 18:18:13,274 INFO L87 Difference]: Start difference. First operand 440 states and 448 transitions. Second operand has 386 states, 386 states have (on average 2.033678756476684) internal successors, (785), 386 states have internal predecessors, (785), 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 18:18:15,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:18:15,197 INFO L93 Difference]: Finished difference Result 877 states and 988 transitions. [2024-09-12 18:18:15,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 383 states. [2024-09-12 18:18:15,198 INFO L78 Accepts]: Start accepts. Automaton has has 386 states, 386 states have (on average 2.033678756476684) internal successors, (785), 386 states have internal predecessors, (785), 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 401 [2024-09-12 18:18:15,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:18:15,202 INFO L225 Difference]: With dead ends: 877 [2024-09-12 18:18:15,203 INFO L226 Difference]: Without dead ends: 824 [2024-09-12 18:18:15,211 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 996 GetRequests, 612 SyntacticMatches, 0 SemanticMatches, 384 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46358 ImplicationChecksByTransitivity, 32.2s TimeCoverageRelationStatistics Valid=37442, Invalid=111168, Unknown=0, NotChecked=0, Total=148610 [2024-09-12 18:18:15,211 INFO L434 NwaCegarLoop]: 28 mSDtfsCounter, 0 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 845 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 282 SdHoareTripleChecker+Invalid, 845 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 845 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-09-12 18:18:15,212 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 282 Invalid, 845 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 845 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-09-12 18:18:15,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 824 states. [2024-09-12 18:18:15,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 824 to 824. [2024-09-12 18:18:15,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 824 states, 813 states have (on average 1.018450184501845) internal successors, (828), 819 states have internal predecessors, (828), 3 states have call successors, (3), 3 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 18:18:15,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 824 states to 824 states and 832 transitions. [2024-09-12 18:18:15,295 INFO L78 Accepts]: Start accepts. Automaton has 824 states and 832 transitions. Word has length 401 [2024-09-12 18:18:15,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:18:15,296 INFO L474 AbstractCegarLoop]: Abstraction has 824 states and 832 transitions. [2024-09-12 18:18:15,297 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 386 states, 386 states have (on average 2.033678756476684) internal successors, (785), 386 states have internal predecessors, (785), 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 18:18:15,297 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:18:15,298 INFO L276 IsEmpty]: Start isEmpty. Operand 824 states and 832 transitions. [2024-09-12 18:18:15,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 786 [2024-09-12 18:18:15,315 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:18:15,316 INFO L216 NwaCegarLoop]: trace histogram [192, 191, 191, 191, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:18:15,336 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-09-12 18:18:15,516 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,11 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:18:15,517 INFO L399 AbstractCegarLoop]: === Iteration 20 === Targeting mainErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-09-12 18:18:15,517 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:18:15,517 INFO L85 PathProgramCache]: Analyzing trace with hash -222686293, now seen corresponding path program 2 times [2024-09-12 18:18:15,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:18:15,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442735579] [2024-09-12 18:18:15,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:18:15,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:18:15,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:19:17,508 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:19:17,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:19:17,522 INFO L134 CoverageAnalysis]: Checked inductivity of 73156 backedges. 192 proven. 72962 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-12 18:19:17,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:19:17,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442735579] [2024-09-12 18:19:17,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442735579] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:19:17,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1379321720] [2024-09-12 18:19:17,523 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 18:19:17,523 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:19:17,523 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:19:17,525 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 18:19:17,526 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 18:19:17,761 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 18:19:17,761 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 18:19:17,773 INFO L262 TraceCheckSpWp]: Trace formula consists of 1598 conjuncts, 384 conjuncts are in the unsatisfiable core [2024-09-12 18:19:17,787 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:19:18,686 INFO L134 CoverageAnalysis]: Checked inductivity of 73156 backedges. 192 proven. 72962 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-12 18:19:18,686 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:20:52,416 INFO L134 CoverageAnalysis]: Checked inductivity of 73156 backedges. 192 proven. 72962 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-12 18:20:52,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1379321720] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:20:52,416 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:20:52,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [385, 385, 385] total 770 [2024-09-12 18:20:52,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440337248] [2024-09-12 18:20:52,417 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:20:52,419 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 770 states [2024-09-12 18:20:52,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:20:52,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 770 interpolants. [2024-09-12 18:20:52,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148610, Invalid=443520, Unknown=0, NotChecked=0, Total=592130 [2024-09-12 18:20:52,479 INFO L87 Difference]: Start difference. First operand 824 states and 832 transitions. Second operand has 770 states, 770 states have (on average 2.016883116883117) internal successors, (1553), 770 states have internal predecessors, (1553), 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)