./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench/hard-ll.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/nla-digbench/hard-ll.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 8c31bebbbf1ab8c6e57b91fec88eba145fb9c1b52fce25f48cae26620a3d8ba6 --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 18:28:46,985 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-12 18:28:47,048 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-12 18:28:47,054 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-12 18:28:47,054 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-12 18:28:47,079 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-12 18:28:47,080 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-12 18:28:47,080 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-12 18:28:47,081 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-12 18:28:47,084 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-12 18:28:47,084 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-12 18:28:47,084 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-12 18:28:47,084 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-12 18:28:47,085 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-12 18:28:47,087 INFO L153 SettingsManager]: * Use SBE=true [2024-09-12 18:28:47,087 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-12 18:28:47,088 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-12 18:28:47,088 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-12 18:28:47,088 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-12 18:28:47,088 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-12 18:28:47,088 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-12 18:28:47,089 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-12 18:28:47,089 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-12 18:28:47,089 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-12 18:28:47,089 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-12 18:28:47,089 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-12 18:28:47,090 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-12 18:28:47,090 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-12 18:28:47,090 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-12 18:28:47,090 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-12 18:28:47,090 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-12 18:28:47,090 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-12 18:28:47,090 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-12 18:28:47,091 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-12 18:28:47,091 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-12 18:28:47,091 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-12 18:28:47,091 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-12 18:28:47,091 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-12 18:28:47,091 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-12 18:28:47,092 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-12 18:28:47,092 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-12 18:28:47,093 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-12 18:28:47,093 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8c31bebbbf1ab8c6e57b91fec88eba145fb9c1b52fce25f48cae26620a3d8ba6 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2024-09-12 18:28:47,389 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-12 18:28:47,413 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-12 18:28:47,416 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-12 18:28:47,417 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-12 18:28:47,417 INFO L274 PluginConnector]: CDTParser initialized [2024-09-12 18:28:47,419 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/nla-digbench/hard-ll.c [2024-09-12 18:28:49,267 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-12 18:28:49,464 INFO L384 CDTParser]: Found 1 translation units. [2024-09-12 18:28:49,465 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench/hard-ll.c [2024-09-12 18:28:49,472 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/a5028ef58/ec6a1cef36af49e69e9c3c9ee7ca4fe2/FLAG38e994875 [2024-09-12 18:28:49,483 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/a5028ef58/ec6a1cef36af49e69e9c3c9ee7ca4fe2 [2024-09-12 18:28:49,486 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-12 18:28:49,487 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-12 18:28:49,488 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-12 18:28:49,488 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-12 18:28:49,497 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-12 18:28:49,498 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.09 06:28:49" (1/1) ... [2024-09-12 18:28:49,499 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b381eb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 06:28:49, skipping insertion in model container [2024-09-12 18:28:49,503 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.09 06:28:49" (1/1) ... [2024-09-12 18:28:49,533 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-12 18:28:49,705 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/nla-digbench/hard-ll.c[538,551] [2024-09-12 18:28:49,735 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-12 18:28:49,750 INFO L200 MainTranslator]: Completed pre-run [2024-09-12 18:28:49,761 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/nla-digbench/hard-ll.c[538,551] [2024-09-12 18:28:49,774 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-12 18:28:49,794 INFO L204 MainTranslator]: Completed translation [2024-09-12 18:28:49,794 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 06:28:49 WrapperNode [2024-09-12 18:28:49,795 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-12 18:28:49,796 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-12 18:28:49,796 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-12 18:28:49,796 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-12 18:28:49,802 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 06:28:49" (1/1) ... [2024-09-12 18:28:49,813 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 06:28:49" (1/1) ... [2024-09-12 18:28:49,823 INFO L138 Inliner]: procedures = 14, calls = 15, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-12 18:28:49,823 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-12 18:28:49,824 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-12 18:28:49,824 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-12 18:28:49,824 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-12 18:28:49,835 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 06:28:49" (1/1) ... [2024-09-12 18:28:49,835 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 06:28:49" (1/1) ... [2024-09-12 18:28:49,839 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 06:28:49" (1/1) ... [2024-09-12 18:28:49,858 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 18:28:49,858 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 06:28:49" (1/1) ... [2024-09-12 18:28:49,859 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 06:28:49" (1/1) ... [2024-09-12 18:28:49,866 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 06:28:49" (1/1) ... [2024-09-12 18:28:49,870 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 06:28:49" (1/1) ... [2024-09-12 18:28:49,873 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 06:28:49" (1/1) ... [2024-09-12 18:28:49,874 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 06:28:49" (1/1) ... [2024-09-12 18:28:49,875 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-12 18:28:49,876 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-12 18:28:49,876 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-12 18:28:49,876 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-12 18:28:49,883 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 06:28:49" (1/1) ... [2024-09-12 18:28:49,891 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-12 18:28:49,908 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:28:49,926 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 18:28:49,950 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 18:28:49,989 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-12 18:28:49,989 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-09-12 18:28:49,989 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-09-12 18:28:49,989 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-12 18:28:49,990 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-12 18:28:49,990 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-12 18:28:49,990 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-12 18:28:49,990 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-12 18:28:49,990 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-12 18:28:49,990 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-12 18:28:49,990 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-12 18:28:49,990 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-12 18:28:50,038 INFO L242 CfgBuilder]: Building ICFG [2024-09-12 18:28:50,040 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-12 18:28:50,338 INFO L? ?]: Removed 49 outVars from TransFormulas that were not future-live. [2024-09-12 18:28:50,338 INFO L291 CfgBuilder]: Performing block encoding [2024-09-12 18:28:50,359 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-12 18:28:50,360 INFO L318 CfgBuilder]: Removed 2 assume(true) statements. [2024-09-12 18:28:50,360 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.09 06:28:50 BoogieIcfgContainer [2024-09-12 18:28:50,360 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-12 18:28:50,362 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-12 18:28:50,362 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-12 18:28:50,365 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-12 18:28:50,366 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.09 06:28:49" (1/3) ... [2024-09-12 18:28:50,366 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@458d51df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.09 06:28:50, skipping insertion in model container [2024-09-12 18:28:50,366 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 06:28:49" (2/3) ... [2024-09-12 18:28:50,366 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@458d51df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.09 06:28:50, skipping insertion in model container [2024-09-12 18:28:50,367 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.09 06:28:50" (3/3) ... [2024-09-12 18:28:50,368 INFO L112 eAbstractionObserver]: Analyzing ICFG hard-ll.c [2024-09-12 18:28:50,386 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-12 18:28:50,386 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 25 error locations. [2024-09-12 18:28:50,466 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-12 18:28:50,473 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;@31475f8f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-12 18:28:50,474 INFO L337 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2024-09-12 18:28:50,479 INFO L276 IsEmpty]: Start isEmpty. Operand has 81 states, 41 states have (on average 1.829268292682927) internal successors, (75), 66 states have internal predecessors, (75), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-09-12 18:28:50,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-09-12 18:28:50,487 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:28:50,487 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:28:50,488 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr20ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-09-12 18:28:50,495 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:28:50,496 INFO L85 PathProgramCache]: Analyzing trace with hash 1210446024, now seen corresponding path program 1 times [2024-09-12 18:28:50,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:28:50,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231090770] [2024-09-12 18:28:50,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:28:50,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:28:50,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:28:50,648 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:28:50,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:28:50,662 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 18:28:50,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:28:50,671 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 18:28:50,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:28:50,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231090770] [2024-09-12 18:28:50,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231090770] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 18:28:50,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 18:28:50,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-12 18:28:50,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589610088] [2024-09-12 18:28:50,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 18:28:50,680 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-09-12 18:28:50,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:28:50,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-09-12 18:28:50,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-12 18:28:50,706 INFO L87 Difference]: Start difference. First operand has 81 states, 41 states have (on average 1.829268292682927) internal successors, (75), 66 states have internal predecessors, (75), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-12 18:28:50,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:28:50,759 INFO L93 Difference]: Finished difference Result 154 states and 188 transitions. [2024-09-12 18:28:50,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-12 18:28:50,767 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 14 [2024-09-12 18:28:50,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:28:50,775 INFO L225 Difference]: With dead ends: 154 [2024-09-12 18:28:50,776 INFO L226 Difference]: Without dead ends: 77 [2024-09-12 18:28:50,780 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 7 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 18:28:50,785 INFO L434 NwaCegarLoop]: 87 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, 87 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 18:28:50,786 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 87 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 18:28:50,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2024-09-12 18:28:50,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2024-09-12 18:28:50,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 39 states have (on average 1.7179487179487178) internal successors, (67), 64 states have internal predecessors, (67), 10 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-09-12 18:28:50,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 85 transitions. [2024-09-12 18:28:50,841 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 85 transitions. Word has length 14 [2024-09-12 18:28:50,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:28:50,842 INFO L474 AbstractCegarLoop]: Abstraction has 77 states and 85 transitions. [2024-09-12 18:28:50,843 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-12 18:28:50,843 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:28:50,843 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 85 transitions. [2024-09-12 18:28:50,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-09-12 18:28:50,845 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:28:50,845 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:28:50,845 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-12 18:28:50,846 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-09-12 18:28:50,846 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:28:50,848 INFO L85 PathProgramCache]: Analyzing trace with hash -14664005, now seen corresponding path program 1 times [2024-09-12 18:28:50,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:28:50,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350022626] [2024-09-12 18:28:50,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:28:50,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:28:50,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:28:51,097 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:28:51,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:28:51,111 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 18:28:51,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:28:51,119 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 18:28:51,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:28:51,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350022626] [2024-09-12 18:28:51,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350022626] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 18:28:51,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 18:28:51,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-12 18:28:51,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438090967] [2024-09-12 18:28:51,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 18:28:51,128 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-12 18:28:51,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:28:51,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-12 18:28:51,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-12 18:28:51,129 INFO L87 Difference]: Start difference. First operand 77 states and 85 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-12 18:28:51,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:28:51,294 INFO L93 Difference]: Finished difference Result 120 states and 138 transitions. [2024-09-12 18:28:51,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-12 18:28:51,295 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 16 [2024-09-12 18:28:51,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:28:51,297 INFO L225 Difference]: With dead ends: 120 [2024-09-12 18:28:51,299 INFO L226 Difference]: Without dead ends: 114 [2024-09-12 18:28:51,300 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-12 18:28:51,301 INFO L434 NwaCegarLoop]: 65 mSDtfsCounter, 47 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 230 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 18:28:51,302 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 230 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 18:28:51,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2024-09-12 18:28:51,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 98. [2024-09-12 18:28:51,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 57 states have (on average 1.6666666666666667) internal successors, (95), 82 states have internal predecessors, (95), 12 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-09-12 18:28:51,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 117 transitions. [2024-09-12 18:28:51,332 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 117 transitions. Word has length 16 [2024-09-12 18:28:51,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:28:51,333 INFO L474 AbstractCegarLoop]: Abstraction has 98 states and 117 transitions. [2024-09-12 18:28:51,333 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-12 18:28:51,334 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:28:51,335 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 117 transitions. [2024-09-12 18:28:51,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-09-12 18:28:51,336 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:28:51,336 INFO L216 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:28:51,336 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-09-12 18:28:51,337 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-09-12 18:28:51,338 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:28:51,338 INFO L85 PathProgramCache]: Analyzing trace with hash -1730326410, now seen corresponding path program 1 times [2024-09-12 18:28:51,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:28:51,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991975671] [2024-09-12 18:28:51,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:28:51,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:28:51,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:28:51,421 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:28:51,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:28:51,435 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 18:28:51,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:28:51,439 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-09-12 18:28:51,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:28:51,449 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:28:51,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:28:51,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991975671] [2024-09-12 18:28:51,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991975671] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 18:28:51,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 18:28:51,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-12 18:28:51,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617902153] [2024-09-12 18:28:51,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 18:28:51,454 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-12 18:28:51,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:28:51,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-12 18:28:51,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-12 18:28:51,454 INFO L87 Difference]: Start difference. First operand 98 states and 117 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-12 18:28:51,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:28:51,644 INFO L93 Difference]: Finished difference Result 116 states and 133 transitions. [2024-09-12 18:28:51,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-12 18:28:51,645 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 21 [2024-09-12 18:28:51,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:28:51,647 INFO L225 Difference]: With dead ends: 116 [2024-09-12 18:28:51,648 INFO L226 Difference]: Without dead ends: 114 [2024-09-12 18:28:51,648 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-12 18:28:51,649 INFO L434 NwaCegarLoop]: 68 mSDtfsCounter, 43 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 243 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 18:28:51,650 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 243 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 18:28:51,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2024-09-12 18:28:51,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 102. [2024-09-12 18:28:51,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 60 states have (on average 1.6333333333333333) internal successors, (98), 85 states have internal predecessors, (98), 12 states have call successors, (12), 6 states have call predecessors, (12), 5 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-09-12 18:28:51,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 120 transitions. [2024-09-12 18:28:51,671 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 120 transitions. Word has length 21 [2024-09-12 18:28:51,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:28:51,671 INFO L474 AbstractCegarLoop]: Abstraction has 102 states and 120 transitions. [2024-09-12 18:28:51,672 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-12 18:28:51,672 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:28:51,672 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 120 transitions. [2024-09-12 18:28:51,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-09-12 18:28:51,673 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:28:51,673 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:28:51,673 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-09-12 18:28:51,673 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-09-12 18:28:51,674 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:28:51,674 INFO L85 PathProgramCache]: Analyzing trace with hash -691178579, now seen corresponding path program 1 times [2024-09-12 18:28:51,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:28:51,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339551950] [2024-09-12 18:28:51,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:28:51,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:28:51,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 18:28:51,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1834990399] [2024-09-12 18:28:51,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:28:51,688 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:28:51,688 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:28:51,690 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 18:28:51,691 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 18:28:51,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:28:51,738 INFO L262 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-09-12 18:28:51,742 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:28:51,759 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-12 18:28:51,759 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-12 18:28:51,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:28:51,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339551950] [2024-09-12 18:28:51,760 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 18:28:51,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1834990399] [2024-09-12 18:28:51,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1834990399] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 18:28:51,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 18:28:51,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-12 18:28:51,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177396002] [2024-09-12 18:28:51,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 18:28:51,762 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-12 18:28:51,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:28:51,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-12 18:28:51,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-12 18:28:51,763 INFO L87 Difference]: Start difference. First operand 102 states and 120 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-09-12 18:28:51,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:28:51,836 INFO L93 Difference]: Finished difference Result 197 states and 240 transitions. [2024-09-12 18:28:51,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-12 18:28:51,836 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 23 [2024-09-12 18:28:51,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:28:51,838 INFO L225 Difference]: With dead ends: 197 [2024-09-12 18:28:51,838 INFO L226 Difference]: Without dead ends: 127 [2024-09-12 18:28:51,839 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 21 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 18:28:51,839 INFO L434 NwaCegarLoop]: 77 mSDtfsCounter, 18 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 18:28:51,840 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 137 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 18:28:51,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2024-09-12 18:28:51,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 123. [2024-09-12 18:28:51,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 76 states have (on average 1.5657894736842106) internal successors, (119), 101 states have internal predecessors, (119), 17 states have call successors, (17), 6 states have call predecessors, (17), 5 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-09-12 18:28:51,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 151 transitions. [2024-09-12 18:28:51,863 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 151 transitions. Word has length 23 [2024-09-12 18:28:51,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:28:51,864 INFO L474 AbstractCegarLoop]: Abstraction has 123 states and 151 transitions. [2024-09-12 18:28:51,864 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-09-12 18:28:51,865 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:28:51,865 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 151 transitions. [2024-09-12 18:28:51,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-09-12 18:28:51,865 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:28:51,866 INFO L216 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:28:51,885 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-09-12 18:28:52,066 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 18:28:52,067 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-09-12 18:28:52,067 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:28:52,067 INFO L85 PathProgramCache]: Analyzing trace with hash -915238307, now seen corresponding path program 1 times [2024-09-12 18:28:52,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:28:52,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364005459] [2024-09-12 18:28:52,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:28:52,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:28:52,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 18:28:52,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1469304165] [2024-09-12 18:28:52,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:28:52,086 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:28:52,086 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:28:52,088 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 18:28:52,089 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 18:28:52,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:28:52,132 INFO L262 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-09-12 18:28:52,135 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:28:52,215 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-12 18:28:52,215 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-12 18:28:52,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:28:52,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364005459] [2024-09-12 18:28:52,216 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 18:28:52,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1469304165] [2024-09-12 18:28:52,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1469304165] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 18:28:52,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 18:28:52,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-12 18:28:52,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29209238] [2024-09-12 18:28:52,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 18:28:52,217 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-12 18:28:52,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:28:52,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-12 18:28:52,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-12 18:28:52,217 INFO L87 Difference]: Start difference. First operand 123 states and 151 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-09-12 18:28:52,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:28:52,360 INFO L93 Difference]: Finished difference Result 131 states and 156 transitions. [2024-09-12 18:28:52,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-12 18:28:52,360 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 28 [2024-09-12 18:28:52,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:28:52,361 INFO L225 Difference]: With dead ends: 131 [2024-09-12 18:28:52,361 INFO L226 Difference]: Without dead ends: 127 [2024-09-12 18:28:52,362 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-12 18:28:52,362 INFO L434 NwaCegarLoop]: 68 mSDtfsCounter, 13 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 221 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 18:28:52,363 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 221 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 18:28:52,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2024-09-12 18:28:52,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2024-09-12 18:28:52,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 79 states have (on average 1.518987341772152) internal successors, (120), 104 states have internal predecessors, (120), 17 states have call successors, (17), 7 states have call predecessors, (17), 6 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-09-12 18:28:52,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 152 transitions. [2024-09-12 18:28:52,379 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 152 transitions. Word has length 28 [2024-09-12 18:28:52,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:28:52,379 INFO L474 AbstractCegarLoop]: Abstraction has 127 states and 152 transitions. [2024-09-12 18:28:52,380 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-09-12 18:28:52,380 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:28:52,380 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 152 transitions. [2024-09-12 18:28:52,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-09-12 18:28:52,380 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:28:52,380 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:28:52,394 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-09-12 18:28:52,581 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 18:28:52,582 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-09-12 18:28:52,582 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:28:52,582 INFO L85 PathProgramCache]: Analyzing trace with hash -404225700, now seen corresponding path program 1 times [2024-09-12 18:28:52,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:28:52,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360913021] [2024-09-12 18:28:52,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:28:52,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:28:52,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:28:52,682 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:28:52,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:28:52,685 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 18:28:52,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:28:52,691 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-09-12 18:28:52,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:28:52,694 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-12 18:28:52,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:28:52,702 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-09-12 18:28:52,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:28:52,715 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-12 18:28:52,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:28:52,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360913021] [2024-09-12 18:28:52,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360913021] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 18:28:52,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 18:28:52,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-12 18:28:52,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945509084] [2024-09-12 18:28:52,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 18:28:52,720 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-09-12 18:28:52,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:28:52,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-09-12 18:28:52,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-09-12 18:28:52,721 INFO L87 Difference]: Start difference. First operand 127 states and 152 transitions. Second operand has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-09-12 18:28:53,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:28:53,343 INFO L93 Difference]: Finished difference Result 145 states and 170 transitions. [2024-09-12 18:28:53,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-12 18:28:53,344 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 34 [2024-09-12 18:28:53,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:28:53,345 INFO L225 Difference]: With dead ends: 145 [2024-09-12 18:28:53,345 INFO L226 Difference]: Without dead ends: 144 [2024-09-12 18:28:53,345 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-09-12 18:28:53,346 INFO L434 NwaCegarLoop]: 55 mSDtfsCounter, 93 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-09-12 18:28:53,346 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 116 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-09-12 18:28:53,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2024-09-12 18:28:53,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 131. [2024-09-12 18:28:53,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 83 states have (on average 1.4939759036144578) internal successors, (124), 108 states have internal predecessors, (124), 17 states have call successors, (17), 7 states have call predecessors, (17), 6 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-09-12 18:28:53,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 156 transitions. [2024-09-12 18:28:53,374 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 156 transitions. Word has length 34 [2024-09-12 18:28:53,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:28:53,375 INFO L474 AbstractCegarLoop]: Abstraction has 131 states and 156 transitions. [2024-09-12 18:28:53,375 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-09-12 18:28:53,375 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:28:53,375 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 156 transitions. [2024-09-12 18:28:53,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-09-12 18:28:53,376 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:28:53,376 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:28:53,376 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-09-12 18:28:53,376 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-09-12 18:28:53,377 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:28:53,377 INFO L85 PathProgramCache]: Analyzing trace with hash 353905281, now seen corresponding path program 1 times [2024-09-12 18:28:53,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:28:53,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95441747] [2024-09-12 18:28:53,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:28:53,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:28:53,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 18:28:53,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [700101290] [2024-09-12 18:28:53,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:28:53,387 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:28:53,387 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:28:53,394 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 18:28:53,397 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 18:28:53,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:28:53,434 INFO L262 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-09-12 18:28:53,435 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:28:53,516 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-12 18:28:53,516 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-12 18:28:53,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:28:53,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95441747] [2024-09-12 18:28:53,517 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 18:28:53,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [700101290] [2024-09-12 18:28:53,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [700101290] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 18:28:53,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 18:28:53,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-12 18:28:53,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957087661] [2024-09-12 18:28:53,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 18:28:53,518 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-09-12 18:28:53,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:28:53,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-09-12 18:28:53,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-09-12 18:28:53,519 INFO L87 Difference]: Start difference. First operand 131 states and 156 transitions. Second operand has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-09-12 18:28:53,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:28:53,697 INFO L93 Difference]: Finished difference Result 139 states and 165 transitions. [2024-09-12 18:28:53,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-12 18:28:53,698 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 35 [2024-09-12 18:28:53,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:28:53,699 INFO L225 Difference]: With dead ends: 139 [2024-09-12 18:28:53,699 INFO L226 Difference]: Without dead ends: 137 [2024-09-12 18:28:53,700 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-09-12 18:28:53,700 INFO L434 NwaCegarLoop]: 67 mSDtfsCounter, 23 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 18:28:53,700 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 146 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 18:28:53,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2024-09-12 18:28:53,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 135. [2024-09-12 18:28:53,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 87 states have (on average 1.471264367816092) internal successors, (128), 112 states have internal predecessors, (128), 17 states have call successors, (17), 7 states have call predecessors, (17), 6 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-09-12 18:28:53,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 160 transitions. [2024-09-12 18:28:53,737 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 160 transitions. Word has length 35 [2024-09-12 18:28:53,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:28:53,737 INFO L474 AbstractCegarLoop]: Abstraction has 135 states and 160 transitions. [2024-09-12 18:28:53,737 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-09-12 18:28:53,737 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:28:53,738 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 160 transitions. [2024-09-12 18:28:53,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-09-12 18:28:53,739 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:28:53,739 INFO L216 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:28:53,755 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-09-12 18:28:53,941 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-09-12 18:28:53,942 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-09-12 18:28:53,942 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:28:53,942 INFO L85 PathProgramCache]: Analyzing trace with hash 542780013, now seen corresponding path program 1 times [2024-09-12 18:28:53,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:28:53,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761727728] [2024-09-12 18:28:53,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:28:53,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:28:53,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 18:28:53,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [626750326] [2024-09-12 18:28:53,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:28:53,951 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:28:53,952 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:28:53,953 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 18:28:53,954 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 18:28:53,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:28:53,985 INFO L262 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-09-12 18:28:53,986 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:28:54,052 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-12 18:28:54,052 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-12 18:28:54,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:28:54,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761727728] [2024-09-12 18:28:54,052 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 18:28:54,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [626750326] [2024-09-12 18:28:54,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [626750326] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 18:28:54,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 18:28:54,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-12 18:28:54,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891001576] [2024-09-12 18:28:54,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 18:28:54,056 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-12 18:28:54,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:28:54,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-12 18:28:54,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-12 18:28:54,057 INFO L87 Difference]: Start difference. First operand 135 states and 160 transitions. Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-09-12 18:28:54,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:28:54,305 INFO L93 Difference]: Finished difference Result 156 states and 176 transitions. [2024-09-12 18:28:54,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-12 18:28:54,306 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 39 [2024-09-12 18:28:54,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:28:54,307 INFO L225 Difference]: With dead ends: 156 [2024-09-12 18:28:54,307 INFO L226 Difference]: Without dead ends: 151 [2024-09-12 18:28:54,307 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-12 18:28:54,308 INFO L434 NwaCegarLoop]: 62 mSDtfsCounter, 35 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 215 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 18:28:54,308 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 215 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 18:28:54,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2024-09-12 18:28:54,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 138. [2024-09-12 18:28:54,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 88 states have (on average 1.4431818181818181) internal successors, (127), 114 states have internal predecessors, (127), 18 states have call successors, (18), 8 states have call predecessors, (18), 7 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) [2024-09-12 18:28:54,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 161 transitions. [2024-09-12 18:28:54,352 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 161 transitions. Word has length 39 [2024-09-12 18:28:54,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:28:54,352 INFO L474 AbstractCegarLoop]: Abstraction has 138 states and 161 transitions. [2024-09-12 18:28:54,352 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-09-12 18:28:54,353 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:28:54,353 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 161 transitions. [2024-09-12 18:28:54,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-09-12 18:28:54,353 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:28:54,354 INFO L216 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:28:54,370 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 18:28:54,558 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:28:54,559 INFO L399 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-09-12 18:28:54,560 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:28:54,560 INFO L85 PathProgramCache]: Analyzing trace with hash -1318184578, now seen corresponding path program 1 times [2024-09-12 18:28:54,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:28:54,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603393992] [2024-09-12 18:28:54,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:28:54,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:28:54,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 18:28:54,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1891134049] [2024-09-12 18:28:54,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:28:54,575 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:28:54,575 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:28:54,579 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 18:28:54,580 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 18:28:54,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:28:54,615 INFO L262 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-09-12 18:28:54,616 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:28:54,642 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-09-12 18:28:54,643 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-12 18:28:54,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:28:54,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603393992] [2024-09-12 18:28:54,644 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 18:28:54,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1891134049] [2024-09-12 18:28:54,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1891134049] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 18:28:54,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 18:28:54,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-12 18:28:54,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435919341] [2024-09-12 18:28:54,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 18:28:54,645 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-09-12 18:28:54,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:28:54,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-09-12 18:28:54,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-09-12 18:28:54,646 INFO L87 Difference]: Start difference. First operand 138 states and 161 transitions. Second operand has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 3 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-09-12 18:28:54,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:28:54,722 INFO L93 Difference]: Finished difference Result 164 states and 191 transitions. [2024-09-12 18:28:54,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-12 18:28:54,722 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 3 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 46 [2024-09-12 18:28:54,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:28:54,725 INFO L225 Difference]: With dead ends: 164 [2024-09-12 18:28:54,725 INFO L226 Difference]: Without dead ends: 144 [2024-09-12 18:28:54,726 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-09-12 18:28:54,727 INFO L434 NwaCegarLoop]: 82 mSDtfsCounter, 42 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 18:28:54,727 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 170 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 18:28:54,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2024-09-12 18:28:54,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2024-09-12 18:28:54,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 96 states have (on average 1.3541666666666667) internal successors, (130), 118 states have internal predecessors, (130), 20 states have call successors, (20), 8 states have call predecessors, (20), 7 states have return successors, (18), 17 states have call predecessors, (18), 18 states have call successors, (18) [2024-09-12 18:28:54,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 168 transitions. [2024-09-12 18:28:54,776 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 168 transitions. Word has length 46 [2024-09-12 18:28:54,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:28:54,776 INFO L474 AbstractCegarLoop]: Abstraction has 144 states and 168 transitions. [2024-09-12 18:28:54,776 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 3 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-09-12 18:28:54,776 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:28:54,776 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 168 transitions. [2024-09-12 18:28:54,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-09-12 18:28:54,779 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:28:54,779 INFO L216 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:28:54,792 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 18:28:54,979 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:28:54,980 INFO L399 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-09-12 18:28:54,980 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:28:54,980 INFO L85 PathProgramCache]: Analyzing trace with hash 2085951102, now seen corresponding path program 1 times [2024-09-12 18:28:54,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:28:54,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63589934] [2024-09-12 18:28:54,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:28:54,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:28:54,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 18:28:54,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [889467866] [2024-09-12 18:28:54,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:28:54,994 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:28:54,994 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:28:54,997 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 18:28:54,999 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 18:28:55,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:28:55,035 INFO L262 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-09-12 18:28:55,036 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:28:55,061 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-09-12 18:28:55,062 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:28:55,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:28:55,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63589934] [2024-09-12 18:28:55,121 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 18:28:55,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [889467866] [2024-09-12 18:28:55,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [889467866] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:28:55,121 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-09-12 18:28:55,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2024-09-12 18:28:55,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939384194] [2024-09-12 18:28:55,122 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-09-12 18:28:55,122 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-09-12 18:28:55,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:28:55,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-09-12 18:28:55,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-09-12 18:28:55,123 INFO L87 Difference]: Start difference. First operand 144 states and 168 transitions. Second operand has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 3 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-09-12 18:28:55,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:28:55,228 INFO L93 Difference]: Finished difference Result 223 states and 271 transitions. [2024-09-12 18:28:55,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-12 18:28:55,228 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 3 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 47 [2024-09-12 18:28:55,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:28:55,230 INFO L225 Difference]: With dead ends: 223 [2024-09-12 18:28:55,231 INFO L226 Difference]: Without dead ends: 219 [2024-09-12 18:28:55,231 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-09-12 18:28:55,231 INFO L434 NwaCegarLoop]: 70 mSDtfsCounter, 47 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 18:28:55,232 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 185 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 18:28:55,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2024-09-12 18:28:55,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 203. [2024-09-12 18:28:55,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 146 states have (on average 1.3767123287671232) internal successors, (201), 168 states have internal predecessors, (201), 29 states have call successors, (29), 8 states have call predecessors, (29), 7 states have return successors, (27), 26 states have call predecessors, (27), 27 states have call successors, (27) [2024-09-12 18:28:55,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 257 transitions. [2024-09-12 18:28:55,289 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 257 transitions. Word has length 47 [2024-09-12 18:28:55,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:28:55,289 INFO L474 AbstractCegarLoop]: Abstraction has 203 states and 257 transitions. [2024-09-12 18:28:55,289 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 3 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-09-12 18:28:55,289 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:28:55,289 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 257 transitions. [2024-09-12 18:28:55,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-09-12 18:28:55,293 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:28:55,293 INFO L216 NwaCegarLoop]: trace histogram [6, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:28:55,309 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-09-12 18:28:55,497 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-09-12 18:28:55,498 INFO L399 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-09-12 18:28:55,498 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:28:55,498 INFO L85 PathProgramCache]: Analyzing trace with hash -2028607700, now seen corresponding path program 1 times [2024-09-12 18:28:55,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:28:55,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119296282] [2024-09-12 18:28:55,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:28:55,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:28:55,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 18:28:55,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [715752046] [2024-09-12 18:28:55,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:28:55,516 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:28:55,516 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:28:55,517 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 18:28:55,525 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 18:28:55,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:28:55,561 INFO L262 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-09-12 18:28:55,562 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:28:55,661 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-09-12 18:28:55,662 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:28:55,783 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-09-12 18:28:55,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:28:55,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119296282] [2024-09-12 18:28:55,784 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 18:28:55,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [715752046] [2024-09-12 18:28:55,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [715752046] provided 1 perfect and 1 imperfect interpolant sequences [2024-09-12 18:28:55,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-12 18:28:55,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 9 [2024-09-12 18:28:55,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434070251] [2024-09-12 18:28:55,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 18:28:55,785 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-12 18:28:55,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:28:55,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-12 18:28:55,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-09-12 18:28:55,787 INFO L87 Difference]: Start difference. First operand 203 states and 257 transitions. Second operand has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-09-12 18:28:56,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:28:56,156 INFO L93 Difference]: Finished difference Result 213 states and 270 transitions. [2024-09-12 18:28:56,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-12 18:28:56,156 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 51 [2024-09-12 18:28:56,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:28:56,158 INFO L225 Difference]: With dead ends: 213 [2024-09-12 18:28:56,158 INFO L226 Difference]: Without dead ends: 211 [2024-09-12 18:28:56,159 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 92 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-09-12 18:28:56,159 INFO L434 NwaCegarLoop]: 54 mSDtfsCounter, 13 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-12 18:28:56,159 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 199 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-12 18:28:56,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2024-09-12 18:28:56,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 207. [2024-09-12 18:28:56,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 149 states have (on average 1.3691275167785235) internal successors, (204), 171 states have internal predecessors, (204), 29 states have call successors, (29), 9 states have call predecessors, (29), 8 states have return successors, (27), 26 states have call predecessors, (27), 27 states have call successors, (27) [2024-09-12 18:28:56,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 260 transitions. [2024-09-12 18:28:56,203 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 260 transitions. Word has length 51 [2024-09-12 18:28:56,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:28:56,203 INFO L474 AbstractCegarLoop]: Abstraction has 207 states and 260 transitions. [2024-09-12 18:28:56,204 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-09-12 18:28:56,204 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:28:56,204 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 260 transitions. [2024-09-12 18:28:56,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-09-12 18:28:56,205 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:28:56,205 INFO L216 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:28:56,221 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-09-12 18:28:56,405 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:28:56,406 INFO L399 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-09-12 18:28:56,406 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:28:56,407 INFO L85 PathProgramCache]: Analyzing trace with hash 237727803, now seen corresponding path program 1 times [2024-09-12 18:28:56,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:28:56,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979232243] [2024-09-12 18:28:56,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:28:56,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:28:56,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:28:56,448 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:28:56,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:28:56,450 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 18:28:56,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:28:56,454 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-09-12 18:28:56,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:28:56,456 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-12 18:28:56,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:28:56,460 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-09-12 18:28:56,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:28:56,465 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-09-12 18:28:56,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:28:56,468 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-12 18:28:56,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:28:56,472 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-09-12 18:28:56,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:28:56,476 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2024-09-12 18:28:56,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:28:56,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979232243] [2024-09-12 18:28:56,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979232243] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 18:28:56,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 18:28:56,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-12 18:28:56,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593038108] [2024-09-12 18:28:56,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 18:28:56,477 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-12 18:28:56,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:28:56,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-12 18:28:56,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-12 18:28:56,478 INFO L87 Difference]: Start difference. First operand 207 states and 260 transitions. Second operand has 3 states, 2 states have (on average 9.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-09-12 18:28:56,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:28:56,592 INFO L93 Difference]: Finished difference Result 207 states and 260 transitions. [2024-09-12 18:28:56,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-12 18:28:56,594 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 9.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 54 [2024-09-12 18:28:56,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:28:56,595 INFO L225 Difference]: With dead ends: 207 [2024-09-12 18:28:56,596 INFO L226 Difference]: Without dead ends: 205 [2024-09-12 18:28:56,596 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 19 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 18:28:56,596 INFO L434 NwaCegarLoop]: 56 mSDtfsCounter, 33 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 18:28:56,596 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 76 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 18:28:56,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2024-09-12 18:28:56,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 205. [2024-09-12 18:28:56,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 149 states have (on average 1.3288590604026846) internal successors, (198), 169 states have internal predecessors, (198), 29 states have call successors, (29), 9 states have call predecessors, (29), 8 states have return successors, (27), 26 states have call predecessors, (27), 27 states have call successors, (27) [2024-09-12 18:28:56,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 254 transitions. [2024-09-12 18:28:56,637 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 254 transitions. Word has length 54 [2024-09-12 18:28:56,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:28:56,638 INFO L474 AbstractCegarLoop]: Abstraction has 205 states and 254 transitions. [2024-09-12 18:28:56,638 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 9.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-09-12 18:28:56,638 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:28:56,638 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 254 transitions. [2024-09-12 18:28:56,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-09-12 18:28:56,639 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:28:56,639 INFO L216 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:28:56,639 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-09-12 18:28:56,639 INFO L399 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-09-12 18:28:56,639 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:28:56,639 INFO L85 PathProgramCache]: Analyzing trace with hash -1220372629, now seen corresponding path program 1 times [2024-09-12 18:28:56,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:28:56,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112432734] [2024-09-12 18:28:56,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:28:56,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:28:56,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:28:56,681 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:28:56,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:28:56,686 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 18:28:56,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:28:56,688 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-09-12 18:28:56,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:28:56,690 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-12 18:28:56,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:28:56,713 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-09-12 18:28:56,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:28:56,720 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-09-12 18:28:56,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:28:56,723 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-12 18:28:56,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:28:56,725 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-09-12 18:28:56,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:28:56,728 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2024-09-12 18:28:56,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:28:56,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112432734] [2024-09-12 18:28:56,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112432734] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:28:56,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1796783441] [2024-09-12 18:28:56,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:28:56,728 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:28:56,729 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:28:56,730 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 18:28:56,731 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 18:28:56,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:28:56,765 INFO L262 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-09-12 18:28:56,766 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:28:56,792 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-12 18:28:56,792 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:28:56,838 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-12 18:28:56,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1796783441] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:28:56,838 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:28:56,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-09-12 18:28:56,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150138395] [2024-09-12 18:28:56,839 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:28:56,839 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-09-12 18:28:56,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:28:56,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-09-12 18:28:56,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-09-12 18:28:56,840 INFO L87 Difference]: Start difference. First operand 205 states and 254 transitions. Second operand has 7 states, 6 states have (on average 8.166666666666666) internal successors, (49), 7 states have internal predecessors, (49), 6 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (17), 6 states have call predecessors, (17), 6 states have call successors, (17) [2024-09-12 18:28:57,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:28:57,008 INFO L93 Difference]: Finished difference Result 248 states and 315 transitions. [2024-09-12 18:28:57,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-12 18:28:57,008 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 8.166666666666666) internal successors, (49), 7 states have internal predecessors, (49), 6 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (17), 6 states have call predecessors, (17), 6 states have call successors, (17) Word has length 55 [2024-09-12 18:28:57,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:28:57,010 INFO L225 Difference]: With dead ends: 248 [2024-09-12 18:28:57,010 INFO L226 Difference]: Without dead ends: 246 [2024-09-12 18:28:57,010 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-09-12 18:28:57,011 INFO L434 NwaCegarLoop]: 60 mSDtfsCounter, 100 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 18:28:57,011 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 174 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 18:28:57,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2024-09-12 18:28:57,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 203. [2024-09-12 18:28:57,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 149 states have (on average 1.2885906040268456) internal successors, (192), 167 states have internal predecessors, (192), 29 states have call successors, (29), 9 states have call predecessors, (29), 8 states have return successors, (27), 26 states have call predecessors, (27), 27 states have call successors, (27) [2024-09-12 18:28:57,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 248 transitions. [2024-09-12 18:28:57,068 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 248 transitions. Word has length 55 [2024-09-12 18:28:57,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:28:57,068 INFO L474 AbstractCegarLoop]: Abstraction has 203 states and 248 transitions. [2024-09-12 18:28:57,068 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 8.166666666666666) internal successors, (49), 7 states have internal predecessors, (49), 6 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (17), 6 states have call predecessors, (17), 6 states have call successors, (17) [2024-09-12 18:28:57,068 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:28:57,068 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 248 transitions. [2024-09-12 18:28:57,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-09-12 18:28:57,069 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:28:57,069 INFO L216 NwaCegarLoop]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:28:57,086 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-09-12 18:28:57,269 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,9 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:28:57,270 INFO L399 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-09-12 18:28:57,270 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:28:57,271 INFO L85 PathProgramCache]: Analyzing trace with hash -1547084574, now seen corresponding path program 1 times [2024-09-12 18:28:57,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:28:57,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959453294] [2024-09-12 18:28:57,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:28:57,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:28:57,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:28:57,372 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:28:57,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:28:57,374 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 18:28:57,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:28:57,376 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-09-12 18:28:57,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:28:57,379 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-12 18:28:57,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:28:57,382 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-09-12 18:28:57,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:28:57,384 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-09-12 18:28:57,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:28:57,388 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-12 18:28:57,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:28:57,390 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-09-12 18:28:57,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:28:57,393 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-12 18:28:57,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:28:57,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959453294] [2024-09-12 18:28:57,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959453294] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 18:28:57,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 18:28:57,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-12 18:28:57,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497771655] [2024-09-12 18:28:57,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 18:28:57,394 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-12 18:28:57,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:28:57,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-12 18:28:57,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-12 18:28:57,394 INFO L87 Difference]: Start difference. First operand 203 states and 248 transitions. Second operand has 5 states, 5 states have (on average 5.6) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-09-12 18:28:57,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:28:57,584 INFO L93 Difference]: Finished difference Result 215 states and 260 transitions. [2024-09-12 18:28:57,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-12 18:28:57,585 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 61 [2024-09-12 18:28:57,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:28:57,587 INFO L225 Difference]: With dead ends: 215 [2024-09-12 18:28:57,587 INFO L226 Difference]: Without dead ends: 193 [2024-09-12 18:28:57,588 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-12 18:28:57,588 INFO L434 NwaCegarLoop]: 61 mSDtfsCounter, 5 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 18:28:57,588 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 212 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 18:28:57,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2024-09-12 18:28:57,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 193. [2024-09-12 18:28:57,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 141 states have (on average 1.297872340425532) internal successors, (183), 159 states have internal predecessors, (183), 27 states have call successors, (27), 9 states have call predecessors, (27), 8 states have return successors, (25), 24 states have call predecessors, (25), 25 states have call successors, (25) [2024-09-12 18:28:57,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 235 transitions. [2024-09-12 18:28:57,630 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 235 transitions. Word has length 61 [2024-09-12 18:28:57,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:28:57,630 INFO L474 AbstractCegarLoop]: Abstraction has 193 states and 235 transitions. [2024-09-12 18:28:57,630 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-09-12 18:28:57,630 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:28:57,630 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 235 transitions. [2024-09-12 18:28:57,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-09-12 18:28:57,631 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:28:57,631 INFO L216 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:28:57,631 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-09-12 18:28:57,631 INFO L399 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-09-12 18:28:57,631 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:28:57,631 INFO L85 PathProgramCache]: Analyzing trace with hash -2080007857, now seen corresponding path program 2 times [2024-09-12 18:28:57,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:28:57,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273171016] [2024-09-12 18:28:57,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:28:57,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:28:57,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 18:28:57,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [67673618] [2024-09-12 18:28:57,644 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 18:28:57,644 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:28:57,644 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:28:57,649 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 18:28:57,651 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 18:28:57,691 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 18:28:57,691 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 18:28:57,692 INFO L262 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-09-12 18:28:57,693 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:28:57,729 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-09-12 18:28:57,729 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:28:57,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:28:57,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273171016] [2024-09-12 18:28:57,766 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 18:28:57,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [67673618] [2024-09-12 18:28:57,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [67673618] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:28:57,766 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-09-12 18:28:57,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2024-09-12 18:28:57,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550383550] [2024-09-12 18:28:57,769 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-09-12 18:28:57,769 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-12 18:28:57,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:28:57,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-12 18:28:57,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-09-12 18:28:57,770 INFO L87 Difference]: Start difference. First operand 193 states and 235 transitions. Second operand has 5 states, 4 states have (on average 7.0) internal successors, (28), 5 states have internal predecessors, (28), 4 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2024-09-12 18:28:58,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:28:58,025 INFO L93 Difference]: Finished difference Result 309 states and 386 transitions. [2024-09-12 18:28:58,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-12 18:28:58,026 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 7.0) internal successors, (28), 5 states have internal predecessors, (28), 4 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) Word has length 70 [2024-09-12 18:28:58,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:28:58,027 INFO L225 Difference]: With dead ends: 309 [2024-09-12 18:28:58,027 INFO L226 Difference]: Without dead ends: 305 [2024-09-12 18:28:58,028 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-09-12 18:28:58,028 INFO L434 NwaCegarLoop]: 73 mSDtfsCounter, 88 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 18:28:58,028 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 196 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 18:28:58,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2024-09-12 18:28:58,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 204. [2024-09-12 18:28:58,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 149 states have (on average 1.2885906040268456) internal successors, (192), 167 states have internal predecessors, (192), 30 states have call successors, (30), 9 states have call predecessors, (30), 8 states have return successors, (28), 27 states have call predecessors, (28), 28 states have call successors, (28) [2024-09-12 18:28:58,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 250 transitions. [2024-09-12 18:28:58,109 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 250 transitions. Word has length 70 [2024-09-12 18:28:58,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:28:58,110 INFO L474 AbstractCegarLoop]: Abstraction has 204 states and 250 transitions. [2024-09-12 18:28:58,110 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 7.0) internal successors, (28), 5 states have internal predecessors, (28), 4 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2024-09-12 18:28:58,110 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:28:58,111 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 250 transitions. [2024-09-12 18:28:58,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-09-12 18:28:58,111 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:28:58,111 INFO L216 NwaCegarLoop]: trace histogram [8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:28:58,130 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 18:28:58,316 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-09-12 18:28:58,317 INFO L399 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr16ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-09-12 18:28:58,317 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:28:58,318 INFO L85 PathProgramCache]: Analyzing trace with hash 2127022106, now seen corresponding path program 1 times [2024-09-12 18:28:58,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:28:58,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132373774] [2024-09-12 18:28:58,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:28:58,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:28:58,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:28:58,386 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:28:58,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:28:58,390 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 18:28:58,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:28:58,394 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-09-12 18:28:58,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:28:58,397 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-12 18:28:58,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:28:58,403 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-09-12 18:28:58,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:28:58,407 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-09-12 18:28:58,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:28:58,409 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-12 18:28:58,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:28:58,411 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-09-12 18:28:58,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:28:58,415 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-09-12 18:28:58,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:28:58,418 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-09-12 18:28:58,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:28:58,421 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2024-09-12 18:28:58,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:28:58,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132373774] [2024-09-12 18:28:58,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132373774] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 18:28:58,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 18:28:58,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-12 18:28:58,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852335990] [2024-09-12 18:28:58,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 18:28:58,422 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-12 18:28:58,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:28:58,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-12 18:28:58,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-12 18:28:58,423 INFO L87 Difference]: Start difference. First operand 204 states and 250 transitions. Second operand has 3 states, 2 states have (on average 16.0) internal successors, (32), 3 states have internal predecessors, (32), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-09-12 18:28:58,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:28:58,598 INFO L93 Difference]: Finished difference Result 204 states and 250 transitions. [2024-09-12 18:28:58,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-12 18:28:58,600 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 16.0) internal successors, (32), 3 states have internal predecessors, (32), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 77 [2024-09-12 18:28:58,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:28:58,602 INFO L225 Difference]: With dead ends: 204 [2024-09-12 18:28:58,602 INFO L226 Difference]: Without dead ends: 203 [2024-09-12 18:28:58,602 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 21 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 18:28:58,603 INFO L434 NwaCegarLoop]: 70 mSDtfsCounter, 2 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 18:28:58,603 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 120 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 18:28:58,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2024-09-12 18:28:58,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 203. [2024-09-12 18:28:58,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 149 states have (on average 1.2751677852348993) internal successors, (190), 166 states have internal predecessors, (190), 30 states have call successors, (30), 9 states have call predecessors, (30), 8 states have return successors, (28), 27 states have call predecessors, (28), 28 states have call successors, (28) [2024-09-12 18:28:58,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 248 transitions. [2024-09-12 18:28:58,653 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 248 transitions. Word has length 77 [2024-09-12 18:28:58,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:28:58,654 INFO L474 AbstractCegarLoop]: Abstraction has 203 states and 248 transitions. [2024-09-12 18:28:58,654 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 16.0) internal successors, (32), 3 states have internal predecessors, (32), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-09-12 18:28:58,654 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:28:58,654 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 248 transitions. [2024-09-12 18:28:58,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-09-12 18:28:58,656 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:28:58,656 INFO L216 NwaCegarLoop]: trace histogram [8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:28:58,656 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-09-12 18:28:58,657 INFO L399 AbstractCegarLoop]: === Iteration 17 === Targeting mainErr17ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-09-12 18:28:58,657 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:28:58,658 INFO L85 PathProgramCache]: Analyzing trace with hash 1513175965, now seen corresponding path program 1 times [2024-09-12 18:28:58,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:28:58,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67232907] [2024-09-12 18:28:58,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:28:58,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:28:58,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:28:58,868 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:28:58,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:28:58,873 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 18:28:58,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:28:58,875 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-09-12 18:28:58,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:28:58,877 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-12 18:28:58,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:28:58,883 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-09-12 18:28:58,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:28:58,886 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-09-12 18:28:58,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:28:58,889 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-12 18:28:58,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:28:58,892 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-09-12 18:28:58,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:28:58,894 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-09-12 18:28:58,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:28:58,897 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-09-12 18:28:58,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:28:58,901 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2024-09-12 18:28:58,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:28:58,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67232907] [2024-09-12 18:28:58,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67232907] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 18:28:58,901 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 18:28:58,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-09-12 18:28:58,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853488904] [2024-09-12 18:28:58,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 18:28:58,902 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-12 18:28:58,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:28:58,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-12 18:28:58,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-12 18:28:58,903 INFO L87 Difference]: Start difference. First operand 203 states and 248 transitions. Second operand has 5 states, 4 states have (on average 8.25) internal successors, (33), 5 states have internal predecessors, (33), 3 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-09-12 18:28:59,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:28:59,363 INFO L93 Difference]: Finished difference Result 325 states and 420 transitions. [2024-09-12 18:28:59,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-12 18:28:59,363 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 8.25) internal successors, (33), 5 states have internal predecessors, (33), 3 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 78 [2024-09-12 18:28:59,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:28:59,365 INFO L225 Difference]: With dead ends: 325 [2024-09-12 18:28:59,365 INFO L226 Difference]: Without dead ends: 324 [2024-09-12 18:28:59,366 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-09-12 18:28:59,366 INFO L434 NwaCegarLoop]: 64 mSDtfsCounter, 94 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 224 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-12 18:28:59,366 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 224 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-12 18:28:59,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2024-09-12 18:28:59,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 271. [2024-09-12 18:28:59,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 209 states have (on average 1.3397129186602872) internal successors, (280), 226 states have internal predecessors, (280), 38 states have call successors, (38), 9 states have call predecessors, (38), 8 states have return successors, (36), 35 states have call predecessors, (36), 36 states have call successors, (36) [2024-09-12 18:28:59,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 354 transitions. [2024-09-12 18:28:59,458 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 354 transitions. Word has length 78 [2024-09-12 18:28:59,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:28:59,459 INFO L474 AbstractCegarLoop]: Abstraction has 271 states and 354 transitions. [2024-09-12 18:28:59,459 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 8.25) internal successors, (33), 5 states have internal predecessors, (33), 3 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-09-12 18:28:59,459 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:28:59,459 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 354 transitions. [2024-09-12 18:28:59,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-09-12 18:28:59,460 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:28:59,460 INFO L216 NwaCegarLoop]: trace histogram [8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:28:59,460 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-09-12 18:28:59,461 INFO L399 AbstractCegarLoop]: === Iteration 18 === Targeting mainErr18ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-09-12 18:28:59,461 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:28:59,461 INFO L85 PathProgramCache]: Analyzing trace with hash -336185220, now seen corresponding path program 1 times [2024-09-12 18:28:59,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:28:59,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665879407] [2024-09-12 18:28:59,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:28:59,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:28:59,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:28:59,611 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:28:59,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:28:59,614 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 18:28:59,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:28:59,616 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-09-12 18:28:59,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:28:59,620 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-12 18:28:59,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:28:59,623 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-09-12 18:28:59,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:28:59,626 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-09-12 18:28:59,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:28:59,628 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-12 18:28:59,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:28:59,632 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-09-12 18:28:59,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:28:59,637 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-09-12 18:28:59,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:28:59,642 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-09-12 18:28:59,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:28:59,647 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-09-12 18:28:59,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:28:59,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665879407] [2024-09-12 18:28:59,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665879407] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:28:59,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1356003794] [2024-09-12 18:28:59,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:28:59,648 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:28:59,648 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:28:59,650 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 18:28:59,654 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 18:28:59,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:28:59,705 INFO L262 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-09-12 18:28:59,707 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:28:59,902 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-09-12 18:28:59,902 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-12 18:28:59,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1356003794] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 18:28:59,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-12 18:28:59,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-09-12 18:28:59,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022358362] [2024-09-12 18:28:59,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 18:28:59,903 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-09-12 18:28:59,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:28:59,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-09-12 18:28:59,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-09-12 18:28:59,904 INFO L87 Difference]: Start difference. First operand 271 states and 354 transitions. Second operand has 4 states, 3 states have (on average 12.333333333333334) internal successors, (37), 4 states have internal predecessors, (37), 3 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-09-12 18:29:00,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:29:00,130 INFO L93 Difference]: Finished difference Result 271 states and 354 transitions. [2024-09-12 18:29:00,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-12 18:29:00,130 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 12.333333333333334) internal successors, (37), 4 states have internal predecessors, (37), 3 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 79 [2024-09-12 18:29:00,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:29:00,132 INFO L225 Difference]: With dead ends: 271 [2024-09-12 18:29:00,132 INFO L226 Difference]: Without dead ends: 269 [2024-09-12 18:29:00,133 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 97 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-09-12 18:29:00,134 INFO L434 NwaCegarLoop]: 59 mSDtfsCounter, 15 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 18:29:00,134 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 93 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 18:29:00,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2024-09-12 18:29:00,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 269. [2024-09-12 18:29:00,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 209 states have (on average 1.2822966507177034) internal successors, (268), 224 states have internal predecessors, (268), 38 states have call successors, (38), 9 states have call predecessors, (38), 8 states have return successors, (36), 35 states have call predecessors, (36), 36 states have call successors, (36) [2024-09-12 18:29:00,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 342 transitions. [2024-09-12 18:29:00,237 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 342 transitions. Word has length 79 [2024-09-12 18:29:00,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:29:00,237 INFO L474 AbstractCegarLoop]: Abstraction has 269 states and 342 transitions. [2024-09-12 18:29:00,238 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 12.333333333333334) internal successors, (37), 4 states have internal predecessors, (37), 3 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-09-12 18:29:00,238 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:29:00,238 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 342 transitions. [2024-09-12 18:29:00,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-09-12 18:29:00,238 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:29:00,238 INFO L216 NwaCegarLoop]: trace histogram [8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:29:00,258 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-09-12 18:29:00,439 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-09-12 18:29:00,439 INFO L399 AbstractCegarLoop]: === Iteration 19 === Targeting mainErr19ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-09-12 18:29:00,439 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:29:00,439 INFO L85 PathProgramCache]: Analyzing trace with hash -1831807105, now seen corresponding path program 1 times [2024-09-12 18:29:00,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:29:00,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862357489] [2024-09-12 18:29:00,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:29:00,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:29:00,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:29:00,578 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:29:00,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:29:00,580 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 18:29:00,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:29:00,582 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-09-12 18:29:00,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:29:00,585 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-12 18:29:00,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:29:00,589 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-09-12 18:29:00,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:29:00,591 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-09-12 18:29:00,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:29:00,593 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-12 18:29:00,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:29:00,596 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-09-12 18:29:00,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:29:00,598 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-09-12 18:29:00,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:29:00,601 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-09-12 18:29:00,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:29:00,604 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-09-12 18:29:00,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:29:00,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862357489] [2024-09-12 18:29:00,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862357489] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:29:00,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [286612980] [2024-09-12 18:29:00,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:29:00,604 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:29:00,605 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:29:00,606 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 18:29:00,607 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 18:29:00,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:29:00,645 INFO L262 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-09-12 18:29:00,646 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:29:00,742 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-09-12 18:29:00,742 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:29:00,997 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-09-12 18:29:00,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [286612980] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:29:00,997 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:29:00,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 3] total 9 [2024-09-12 18:29:00,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042610244] [2024-09-12 18:29:00,998 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:29:00,998 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-09-12 18:29:00,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:29:00,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-09-12 18:29:00,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2024-09-12 18:29:00,999 INFO L87 Difference]: Start difference. First operand 269 states and 342 transitions. Second operand has 10 states, 9 states have (on average 10.88888888888889) internal successors, (98), 10 states have internal predecessors, (98), 7 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (26), 7 states have call predecessors, (26), 7 states have call successors, (26) [2024-09-12 18:29:01,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:29:01,434 INFO L93 Difference]: Finished difference Result 501 states and 639 transitions. [2024-09-12 18:29:01,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-12 18:29:01,435 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 10.88888888888889) internal successors, (98), 10 states have internal predecessors, (98), 7 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (26), 7 states have call predecessors, (26), 7 states have call successors, (26) Word has length 80 [2024-09-12 18:29:01,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:29:01,438 INFO L225 Difference]: With dead ends: 501 [2024-09-12 18:29:01,438 INFO L226 Difference]: Without dead ends: 399 [2024-09-12 18:29:01,439 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2024-09-12 18:29:01,439 INFO L434 NwaCegarLoop]: 65 mSDtfsCounter, 58 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 281 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 282 SdHoareTripleChecker+Invalid, 288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-12 18:29:01,440 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 282 Invalid, 288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 281 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-12 18:29:01,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2024-09-12 18:29:01,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 352. [2024-09-12 18:29:01,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 352 states, 281 states have (on average 1.2562277580071175) internal successors, (353), 296 states have internal predecessors, (353), 49 states have call successors, (49), 9 states have call predecessors, (49), 8 states have return successors, (47), 46 states have call predecessors, (47), 47 states have call successors, (47) [2024-09-12 18:29:01,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 449 transitions. [2024-09-12 18:29:01,579 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 449 transitions. Word has length 80 [2024-09-12 18:29:01,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:29:01,579 INFO L474 AbstractCegarLoop]: Abstraction has 352 states and 449 transitions. [2024-09-12 18:29:01,580 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 10.88888888888889) internal successors, (98), 10 states have internal predecessors, (98), 7 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (26), 7 states have call predecessors, (26), 7 states have call successors, (26) [2024-09-12 18:29:01,580 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:29:01,580 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 449 transitions. [2024-09-12 18:29:01,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2024-09-12 18:29:01,581 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:29:01,581 INFO L216 NwaCegarLoop]: trace histogram [8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:29:01,600 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-09-12 18:29:01,781 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:29:01,782 INFO L399 AbstractCegarLoop]: === Iteration 20 === Targeting mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-09-12 18:29:01,782 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:29:01,783 INFO L85 PathProgramCache]: Analyzing trace with hash 489082392, now seen corresponding path program 1 times [2024-09-12 18:29:01,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:29:01,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190356711] [2024-09-12 18:29:01,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:29:01,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:29:01,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 18:29:01,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1788645200] [2024-09-12 18:29:01,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:29:01,811 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:29:01,811 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:29:01,816 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 18:29:01,817 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-09-12 18:29:01,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:29:01,890 INFO L262 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-09-12 18:29:01,891 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:29:02,402 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-09-12 18:29:02,402 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:29:02,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:29:02,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190356711] [2024-09-12 18:29:02,758 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 18:29:02,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1788645200] [2024-09-12 18:29:02,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1788645200] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:29:02,759 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-09-12 18:29:02,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2024-09-12 18:29:02,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476150478] [2024-09-12 18:29:02,759 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-09-12 18:29:02,759 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-09-12 18:29:02,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:29:02,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-09-12 18:29:02,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2024-09-12 18:29:02,760 INFO L87 Difference]: Start difference. First operand 352 states and 449 transitions. Second operand has 9 states, 8 states have (on average 5.125) internal successors, (41), 9 states have internal predecessors, (41), 4 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2024-09-12 18:29:03,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:29:03,146 INFO L93 Difference]: Finished difference Result 384 states and 492 transitions. [2024-09-12 18:29:03,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-09-12 18:29:03,150 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.125) internal successors, (41), 9 states have internal predecessors, (41), 4 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) Word has length 83 [2024-09-12 18:29:03,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:29:03,152 INFO L225 Difference]: With dead ends: 384 [2024-09-12 18:29:03,152 INFO L226 Difference]: Without dead ends: 383 [2024-09-12 18:29:03,153 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2024-09-12 18:29:03,153 INFO L434 NwaCegarLoop]: 54 mSDtfsCounter, 41 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 366 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 225 SdHoareTripleChecker+Invalid, 368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 366 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-12 18:29:03,154 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 225 Invalid, 368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 366 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-12 18:29:03,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2024-09-12 18:29:03,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 367. [2024-09-12 18:29:03,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 367 states, 294 states have (on average 1.251700680272109) internal successors, (368), 309 states have internal predecessors, (368), 51 states have call successors, (51), 9 states have call predecessors, (51), 8 states have return successors, (49), 48 states have call predecessors, (49), 49 states have call successors, (49) [2024-09-12 18:29:03,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 468 transitions. [2024-09-12 18:29:03,268 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 468 transitions. Word has length 83 [2024-09-12 18:29:03,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:29:03,269 INFO L474 AbstractCegarLoop]: Abstraction has 367 states and 468 transitions. [2024-09-12 18:29:03,269 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.125) internal successors, (41), 9 states have internal predecessors, (41), 4 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2024-09-12 18:29:03,269 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:29:03,269 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 468 transitions. [2024-09-12 18:29:03,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-09-12 18:29:03,270 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:29:03,270 INFO L216 NwaCegarLoop]: trace histogram [8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:29:03,294 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-09-12 18:29:03,470 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable19 [2024-09-12 18:29:03,471 INFO L399 AbstractCegarLoop]: === Iteration 21 === Targeting mainErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-09-12 18:29:03,471 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:29:03,471 INFO L85 PathProgramCache]: Analyzing trace with hash -2018314941, now seen corresponding path program 1 times [2024-09-12 18:29:03,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:29:03,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135670939] [2024-09-12 18:29:03,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:29:03,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:29:03,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:29:03,672 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:29:03,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:29:03,678 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 18:29:03,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:29:03,682 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-09-12 18:29:03,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:29:03,687 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-12 18:29:03,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:29:03,688 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-09-12 18:29:03,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:29:03,690 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-09-12 18:29:03,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:29:03,691 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-12 18:29:03,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:29:03,692 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-09-12 18:29:03,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:29:03,694 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-09-12 18:29:03,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:29:03,696 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-09-12 18:29:03,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:29:03,697 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2024-09-12 18:29:03,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:29:03,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135670939] [2024-09-12 18:29:03,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135670939] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 18:29:03,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 18:29:03,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-09-12 18:29:03,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507238512] [2024-09-12 18:29:03,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 18:29:03,698 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-12 18:29:03,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:29:03,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-12 18:29:03,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-12 18:29:03,699 INFO L87 Difference]: Start difference. First operand 367 states and 468 transitions. Second operand has 5 states, 4 states have (on average 9.75) internal successors, (39), 5 states have internal predecessors, (39), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-09-12 18:29:04,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:29:04,985 INFO L93 Difference]: Finished difference Result 367 states and 468 transitions. [2024-09-12 18:29:04,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-12 18:29:04,988 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 9.75) internal successors, (39), 5 states have internal predecessors, (39), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 84 [2024-09-12 18:29:04,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:29:04,990 INFO L225 Difference]: With dead ends: 367 [2024-09-12 18:29:04,991 INFO L226 Difference]: Without dead ends: 366 [2024-09-12 18:29:04,991 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-09-12 18:29:04,991 INFO L434 NwaCegarLoop]: 43 mSDtfsCounter, 67 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-09-12 18:29:04,993 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 117 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-09-12 18:29:04,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2024-09-12 18:29:05,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 358. [2024-09-12 18:29:05,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 358 states, 286 states have (on average 1.2342657342657342) internal successors, (353), 300 states have internal predecessors, (353), 51 states have call successors, (51), 9 states have call predecessors, (51), 8 states have return successors, (49), 48 states have call predecessors, (49), 49 states have call successors, (49) [2024-09-12 18:29:05,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 453 transitions. [2024-09-12 18:29:05,099 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 453 transitions. Word has length 84 [2024-09-12 18:29:05,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:29:05,100 INFO L474 AbstractCegarLoop]: Abstraction has 358 states and 453 transitions. [2024-09-12 18:29:05,100 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 9.75) internal successors, (39), 5 states have internal predecessors, (39), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-09-12 18:29:05,100 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:29:05,100 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 453 transitions. [2024-09-12 18:29:05,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-09-12 18:29:05,102 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:29:05,103 INFO L216 NwaCegarLoop]: trace histogram [8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:29:05,103 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-09-12 18:29:05,103 INFO L399 AbstractCegarLoop]: === Iteration 22 === Targeting mainErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-09-12 18:29:05,103 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:29:05,103 INFO L85 PathProgramCache]: Analyzing trace with hash 1856746362, now seen corresponding path program 1 times [2024-09-12 18:29:05,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:29:05,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826579378] [2024-09-12 18:29:05,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:29:05,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:29:05,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 18:29:05,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [66219432] [2024-09-12 18:29:05,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:29:05,136 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:29:05,136 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:29:05,141 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 18:29:05,143 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-09-12 18:29:05,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:29:05,195 INFO L262 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-09-12 18:29:05,198 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:29:05,818 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-09-12 18:29:05,819 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:29:07,526 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-09-12 18:29:07,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:29:07,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826579378] [2024-09-12 18:29:07,527 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 18:29:07,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [66219432] [2024-09-12 18:29:07,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [66219432] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:29:07,527 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-12 18:29:07,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2024-09-12 18:29:07,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873176690] [2024-09-12 18:29:07,527 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-12 18:29:07,528 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-09-12 18:29:07,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:29:07,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-09-12 18:29:07,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=264, Unknown=0, NotChecked=0, Total=380 [2024-09-12 18:29:07,529 INFO L87 Difference]: Start difference. First operand 358 states and 453 transitions. Second operand has 20 states, 19 states have (on average 4.105263157894737) internal successors, (78), 20 states have internal predecessors, (78), 7 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (18), 7 states have call predecessors, (18), 7 states have call successors, (18) [2024-09-12 18:29:12,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:29:12,843 INFO L93 Difference]: Finished difference Result 433 states and 548 transitions. [2024-09-12 18:29:12,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-09-12 18:29:12,843 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 4.105263157894737) internal successors, (78), 20 states have internal predecessors, (78), 7 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (18), 7 states have call predecessors, (18), 7 states have call successors, (18) Word has length 85 [2024-09-12 18:29:12,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:29:12,845 INFO L225 Difference]: With dead ends: 433 [2024-09-12 18:29:12,845 INFO L226 Difference]: Without dead ends: 406 [2024-09-12 18:29:12,846 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 278 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=376, Invalid=814, Unknown=0, NotChecked=0, Total=1190 [2024-09-12 18:29:12,846 INFO L434 NwaCegarLoop]: 46 mSDtfsCounter, 207 mSDsluCounter, 270 mSDsCounter, 0 mSdLazyCounter, 827 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 316 SdHoareTripleChecker+Invalid, 903 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 827 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-09-12 18:29:12,846 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [214 Valid, 316 Invalid, 903 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 827 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-09-12 18:29:12,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 406 states. [2024-09-12 18:29:12,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 406 to 367. [2024-09-12 18:29:12,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 367 states, 297 states have (on average 1.2222222222222223) internal successors, (363), 311 states have internal predecessors, (363), 49 states have call successors, (49), 9 states have call predecessors, (49), 8 states have return successors, (47), 46 states have call predecessors, (47), 47 states have call successors, (47) [2024-09-12 18:29:12,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 459 transitions. [2024-09-12 18:29:12,957 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 459 transitions. Word has length 85 [2024-09-12 18:29:12,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:29:12,957 INFO L474 AbstractCegarLoop]: Abstraction has 367 states and 459 transitions. [2024-09-12 18:29:12,958 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 4.105263157894737) internal successors, (78), 20 states have internal predecessors, (78), 7 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (18), 7 states have call predecessors, (18), 7 states have call successors, (18) [2024-09-12 18:29:12,958 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:29:12,958 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 459 transitions. [2024-09-12 18:29:12,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-09-12 18:29:12,959 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:29:12,959 INFO L216 NwaCegarLoop]: trace histogram [9, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:29:12,976 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-09-12 18:29:13,162 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,14 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:29:13,163 INFO L399 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-09-12 18:29:13,163 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:29:13,163 INFO L85 PathProgramCache]: Analyzing trace with hash 43945702, now seen corresponding path program 1 times [2024-09-12 18:29:13,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:29:13,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508482582] [2024-09-12 18:29:13,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:29:13,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:29:13,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 18:29:13,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1683620234] [2024-09-12 18:29:13,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:29:13,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:29:13,181 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:29:13,182 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 18:29:13,185 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-09-12 18:29:13,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:29:13,223 INFO L262 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-09-12 18:29:13,224 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:29:13,904 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 16 proven. 13 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-09-12 18:29:13,904 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:29:15,953 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 16 proven. 13 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-09-12 18:29:15,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:29:15,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508482582] [2024-09-12 18:29:15,953 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 18:29:15,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1683620234] [2024-09-12 18:29:15,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1683620234] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:29:15,954 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-12 18:29:15,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 13] total 27 [2024-09-12 18:29:15,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019777607] [2024-09-12 18:29:15,954 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-12 18:29:15,954 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-09-12 18:29:15,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:29:15,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-09-12 18:29:15,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=596, Unknown=0, NotChecked=0, Total=702 [2024-09-12 18:29:15,956 INFO L87 Difference]: Start difference. First operand 367 states and 459 transitions. Second operand has 27 states, 27 states have (on average 3.185185185185185) internal successors, (86), 24 states have internal predecessors, (86), 9 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (19), 8 states have call predecessors, (19), 7 states have call successors, (19) [2024-09-12 18:29:18,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:29:18,694 INFO L93 Difference]: Finished difference Result 470 states and 587 transitions. [2024-09-12 18:29:18,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-09-12 18:29:18,695 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.185185185185185) internal successors, (86), 24 states have internal predecessors, (86), 9 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (19), 8 states have call predecessors, (19), 7 states have call successors, (19) Word has length 89 [2024-09-12 18:29:18,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:29:18,697 INFO L225 Difference]: With dead ends: 470 [2024-09-12 18:29:18,697 INFO L226 Difference]: Without dead ends: 468 [2024-09-12 18:29:18,698 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 400 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=296, Invalid=1596, Unknown=0, NotChecked=0, Total=1892 [2024-09-12 18:29:18,698 INFO L434 NwaCegarLoop]: 35 mSDtfsCounter, 216 mSDsluCounter, 395 mSDsCounter, 0 mSdLazyCounter, 1246 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 430 SdHoareTripleChecker+Invalid, 1318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 1246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-09-12 18:29:18,698 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [219 Valid, 430 Invalid, 1318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 1246 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-09-12 18:29:18,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 468 states. [2024-09-12 18:29:18,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 468 to 426. [2024-09-12 18:29:18,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 426 states, 345 states have (on average 1.208695652173913) internal successors, (417), 360 states have internal predecessors, (417), 55 states have call successors, (55), 14 states have call predecessors, (55), 13 states have return successors, (53), 51 states have call predecessors, (53), 53 states have call successors, (53) [2024-09-12 18:29:18,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 525 transitions. [2024-09-12 18:29:18,893 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 525 transitions. Word has length 89 [2024-09-12 18:29:18,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:29:18,894 INFO L474 AbstractCegarLoop]: Abstraction has 426 states and 525 transitions. [2024-09-12 18:29:18,894 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 3.185185185185185) internal successors, (86), 24 states have internal predecessors, (86), 9 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (19), 8 states have call predecessors, (19), 7 states have call successors, (19) [2024-09-12 18:29:18,894 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:29:18,894 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 525 transitions. [2024-09-12 18:29:18,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-09-12 18:29:18,895 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:29:18,895 INFO L216 NwaCegarLoop]: trace histogram [11, 11, 11, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:29:18,921 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-09-12 18:29:19,095 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-09-12 18:29:19,096 INFO L399 AbstractCegarLoop]: === Iteration 24 === Targeting mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-09-12 18:29:19,096 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:29:19,096 INFO L85 PathProgramCache]: Analyzing trace with hash 1579711326, now seen corresponding path program 3 times [2024-09-12 18:29:19,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:29:19,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181727641] [2024-09-12 18:29:19,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:29:19,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:29:19,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 18:29:19,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [544650700] [2024-09-12 18:29:19,107 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-12 18:29:19,107 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:29:19,107 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:29:19,109 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 18:29:19,110 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-09-12 18:29:19,188 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-09-12 18:29:19,188 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 18:29:19,197 INFO L262 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-09-12 18:29:19,199 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:29:19,287 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 49 proven. 6 refuted. 0 times theorem prover too weak. 213 trivial. 0 not checked. [2024-09-12 18:29:19,287 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:29:19,441 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 49 proven. 6 refuted. 0 times theorem prover too weak. 213 trivial. 0 not checked. [2024-09-12 18:29:19,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:29:19,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181727641] [2024-09-12 18:29:19,441 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 18:29:19,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [544650700] [2024-09-12 18:29:19,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [544650700] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:29:19,441 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-12 18:29:19,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2024-09-12 18:29:19,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746905147] [2024-09-12 18:29:19,442 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-12 18:29:19,442 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-09-12 18:29:19,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:29:19,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-09-12 18:29:19,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-09-12 18:29:19,443 INFO L87 Difference]: Start difference. First operand 426 states and 525 transitions. Second operand has 10 states, 9 states have (on average 4.111111111111111) internal successors, (37), 10 states have internal predecessors, (37), 3 states have call successors, (10), 1 states have call predecessors, (10), 2 states have return successors, (11), 5 states have call predecessors, (11), 3 states have call successors, (11) [2024-09-12 18:29:24,427 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-12 18:29:26,838 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.60s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-12 18:29:27,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:29:27,191 INFO L93 Difference]: Finished difference Result 434 states and 534 transitions. [2024-09-12 18:29:27,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-09-12 18:29:27,191 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.111111111111111) internal successors, (37), 10 states have internal predecessors, (37), 3 states have call successors, (10), 1 states have call predecessors, (10), 2 states have return successors, (11), 5 states have call predecessors, (11), 3 states have call successors, (11) Word has length 93 [2024-09-12 18:29:27,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:29:27,196 INFO L225 Difference]: With dead ends: 434 [2024-09-12 18:29:27,196 INFO L226 Difference]: Without dead ends: 432 [2024-09-12 18:29:27,197 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 178 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2024-09-12 18:29:27,198 INFO L434 NwaCegarLoop]: 42 mSDtfsCounter, 92 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 345 mSolverCounterSat, 35 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 345 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time [2024-09-12 18:29:27,198 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 188 Invalid, 381 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 345 Invalid, 1 Unknown, 0 Unchecked, 7.5s Time] [2024-09-12 18:29:27,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2024-09-12 18:29:27,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 424. [2024-09-12 18:29:27,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 424 states, 345 states have (on average 1.1855072463768115) internal successors, (409), 358 states have internal predecessors, (409), 55 states have call successors, (55), 14 states have call predecessors, (55), 13 states have return successors, (53), 51 states have call predecessors, (53), 53 states have call successors, (53) [2024-09-12 18:29:27,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 424 states to 424 states and 517 transitions. [2024-09-12 18:29:27,405 INFO L78 Accepts]: Start accepts. Automaton has 424 states and 517 transitions. Word has length 93 [2024-09-12 18:29:27,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:29:27,405 INFO L474 AbstractCegarLoop]: Abstraction has 424 states and 517 transitions. [2024-09-12 18:29:27,406 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.111111111111111) internal successors, (37), 10 states have internal predecessors, (37), 3 states have call successors, (10), 1 states have call predecessors, (10), 2 states have return successors, (11), 5 states have call predecessors, (11), 3 states have call successors, (11) [2024-09-12 18:29:27,406 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:29:27,406 INFO L276 IsEmpty]: Start isEmpty. Operand 424 states and 517 transitions. [2024-09-12 18:29:27,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-09-12 18:29:27,407 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:29:27,407 INFO L216 NwaCegarLoop]: trace histogram [10, 9, 9, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:29:27,414 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-09-12 18:29:27,611 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-09-12 18:29:27,612 INFO L399 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-09-12 18:29:27,612 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:29:27,613 INFO L85 PathProgramCache]: Analyzing trace with hash 645765421, now seen corresponding path program 2 times [2024-09-12 18:29:27,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:29:27,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298372177] [2024-09-12 18:29:27,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:29:27,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:29:27,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 18:29:27,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [785299962] [2024-09-12 18:29:27,648 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 18:29:27,648 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:29:27,648 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:29:27,651 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 18:29:27,655 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-09-12 18:29:27,716 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 18:29:27,716 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 18:29:27,716 INFO L262 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-09-12 18:29:27,718 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:29:28,004 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 18 proven. 16 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-09-12 18:29:28,004 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:29:29,452 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 18 proven. 16 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-09-12 18:29:29,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:29:29,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298372177] [2024-09-12 18:29:29,453 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 18:29:29,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [785299962] [2024-09-12 18:29:29,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [785299962] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:29:29,453 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-12 18:29:29,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2024-09-12 18:29:29,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390602921] [2024-09-12 18:29:29,454 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-12 18:29:29,454 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-09-12 18:29:29,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:29:29,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-09-12 18:29:29,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2024-09-12 18:29:29,455 INFO L87 Difference]: Start difference. First operand 424 states and 517 transitions. Second operand has 18 states, 18 states have (on average 4.722222222222222) internal successors, (85), 17 states have internal predecessors, (85), 9 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (20), 9 states have call predecessors, (20), 9 states have call successors, (20) [2024-09-12 18:29:30,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:29:30,519 INFO L93 Difference]: Finished difference Result 517 states and 626 transitions. [2024-09-12 18:29:30,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-09-12 18:29:30,520 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.722222222222222) internal successors, (85), 17 states have internal predecessors, (85), 9 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (20), 9 states have call predecessors, (20), 9 states have call successors, (20) Word has length 96 [2024-09-12 18:29:30,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:29:30,522 INFO L225 Difference]: With dead ends: 517 [2024-09-12 18:29:30,522 INFO L226 Difference]: Without dead ends: 402 [2024-09-12 18:29:30,526 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 173 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=118, Invalid=482, Unknown=0, NotChecked=0, Total=600 [2024-09-12 18:29:30,526 INFO L434 NwaCegarLoop]: 51 mSDtfsCounter, 46 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 592 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 323 SdHoareTripleChecker+Invalid, 615 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 592 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-09-12 18:29:30,527 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 323 Invalid, 615 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 592 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-09-12 18:29:30,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2024-09-12 18:29:30,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 399. [2024-09-12 18:29:30,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 399 states, 320 states have (on average 1.178125) internal successors, (377), 333 states have internal predecessors, (377), 53 states have call successors, (53), 16 states have call predecessors, (53), 15 states have return successors, (51), 49 states have call predecessors, (51), 51 states have call successors, (51) [2024-09-12 18:29:30,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 481 transitions. [2024-09-12 18:29:30,717 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 481 transitions. Word has length 96 [2024-09-12 18:29:30,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:29:30,717 INFO L474 AbstractCegarLoop]: Abstraction has 399 states and 481 transitions. [2024-09-12 18:29:30,717 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.722222222222222) internal successors, (85), 17 states have internal predecessors, (85), 9 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (20), 9 states have call predecessors, (20), 9 states have call successors, (20) [2024-09-12 18:29:30,717 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:29:30,717 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 481 transitions. [2024-09-12 18:29:30,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-09-12 18:29:30,718 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:29:30,718 INFO L216 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:29:30,743 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-09-12 18:29:30,918 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,17 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:29:30,919 INFO L399 AbstractCegarLoop]: === Iteration 26 === Targeting mainErr20ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-09-12 18:29:30,919 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:29:30,919 INFO L85 PathProgramCache]: Analyzing trace with hash 844039737, now seen corresponding path program 1 times [2024-09-12 18:29:30,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:29:30,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248219528] [2024-09-12 18:29:30,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:29:30,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:29:30,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 18:29:30,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2106371479] [2024-09-12 18:29:30,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:29:30,932 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:29:30,933 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:29:30,934 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 18:29:30,935 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-09-12 18:29:30,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:29:30,976 INFO L262 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-09-12 18:29:30,977 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:29:31,244 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-09-12 18:29:31,245 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:29:31,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:29:31,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248219528] [2024-09-12 18:29:31,670 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 18:29:31,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2106371479] [2024-09-12 18:29:31,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2106371479] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:29:31,670 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-09-12 18:29:31,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2024-09-12 18:29:31,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503084946] [2024-09-12 18:29:31,670 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-09-12 18:29:31,671 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-09-12 18:29:31,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:29:31,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-09-12 18:29:31,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2024-09-12 18:29:31,671 INFO L87 Difference]: Start difference. First operand 399 states and 481 transitions. Second operand has 9 states, 8 states have (on average 5.875) internal successors, (47), 9 states have internal predecessors, (47), 5 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) [2024-09-12 18:29:32,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:29:32,087 INFO L93 Difference]: Finished difference Result 406 states and 492 transitions. [2024-09-12 18:29:32,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-09-12 18:29:32,088 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.875) internal successors, (47), 9 states have internal predecessors, (47), 5 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) Word has length 99 [2024-09-12 18:29:32,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:29:32,089 INFO L225 Difference]: With dead ends: 406 [2024-09-12 18:29:32,090 INFO L226 Difference]: Without dead ends: 405 [2024-09-12 18:29:32,090 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=161, Unknown=0, NotChecked=0, Total=240 [2024-09-12 18:29:32,090 INFO L434 NwaCegarLoop]: 61 mSDtfsCounter, 22 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 378 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 333 SdHoareTripleChecker+Invalid, 381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 378 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 18:29:32,091 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 333 Invalid, 381 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 378 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 18:29:32,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 405 states. [2024-09-12 18:29:32,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 405 to 400. [2024-09-12 18:29:32,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 400 states, 321 states have (on average 1.1775700934579438) internal successors, (378), 334 states have internal predecessors, (378), 53 states have call successors, (53), 16 states have call predecessors, (53), 15 states have return successors, (51), 49 states have call predecessors, (51), 51 states have call successors, (51) [2024-09-12 18:29:32,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 482 transitions. [2024-09-12 18:29:32,242 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 482 transitions. Word has length 99 [2024-09-12 18:29:32,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:29:32,242 INFO L474 AbstractCegarLoop]: Abstraction has 400 states and 482 transitions. [2024-09-12 18:29:32,242 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.875) internal successors, (47), 9 states have internal predecessors, (47), 5 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) [2024-09-12 18:29:32,242 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:29:32,242 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 482 transitions. [2024-09-12 18:29:32,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-09-12 18:29:32,243 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:29:32,243 INFO L216 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:29:32,264 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-09-12 18:29:32,443 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,18 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:29:32,444 INFO L399 AbstractCegarLoop]: === Iteration 27 === Targeting mainErr21ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-09-12 18:29:32,444 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:29:32,444 INFO L85 PathProgramCache]: Analyzing trace with hash 395428204, now seen corresponding path program 1 times [2024-09-12 18:29:32,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:29:32,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110253927] [2024-09-12 18:29:32,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:29:32,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:29:32,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 18:29:32,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1107754978] [2024-09-12 18:29:32,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:29:32,457 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:29:32,457 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:29:32,458 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 18:29:32,459 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-09-12 18:29:32,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:29:32,499 INFO L262 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-09-12 18:29:32,501 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:29:32,839 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-09-12 18:29:32,840 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:29:33,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:29:33,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110253927] [2024-09-12 18:29:33,686 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 18:29:33,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1107754978] [2024-09-12 18:29:33,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1107754978] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:29:33,686 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-09-12 18:29:33,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2024-09-12 18:29:33,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53126698] [2024-09-12 18:29:33,686 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-09-12 18:29:33,687 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-09-12 18:29:33,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:29:33,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-09-12 18:29:33,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2024-09-12 18:29:33,688 INFO L87 Difference]: Start difference. First operand 400 states and 482 transitions. Second operand has 10 states, 9 states have (on average 5.333333333333333) internal successors, (48), 10 states have internal predecessors, (48), 5 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) [2024-09-12 18:29:34,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:29:34,125 INFO L93 Difference]: Finished difference Result 569 states and 702 transitions. [2024-09-12 18:29:34,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-09-12 18:29:34,125 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 5.333333333333333) internal successors, (48), 10 states have internal predecessors, (48), 5 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) Word has length 100 [2024-09-12 18:29:34,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:29:34,129 INFO L225 Difference]: With dead ends: 569 [2024-09-12 18:29:34,130 INFO L226 Difference]: Without dead ends: 376 [2024-09-12 18:29:34,131 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=101, Invalid=205, Unknown=0, NotChecked=0, Total=306 [2024-09-12 18:29:34,131 INFO L434 NwaCegarLoop]: 60 mSDtfsCounter, 20 mSDsluCounter, 303 mSDsCounter, 0 mSdLazyCounter, 448 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 363 SdHoareTripleChecker+Invalid, 453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 18:29:34,131 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 363 Invalid, 453 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 448 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 18:29:34,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2024-09-12 18:29:34,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 369. [2024-09-12 18:29:34,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 369 states, 297 states have (on average 1.1885521885521886) internal successors, (353), 308 states have internal predecessors, (353), 48 states have call successors, (48), 14 states have call predecessors, (48), 13 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2024-09-12 18:29:34,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 447 transitions. [2024-09-12 18:29:34,286 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 447 transitions. Word has length 100 [2024-09-12 18:29:34,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:29:34,287 INFO L474 AbstractCegarLoop]: Abstraction has 369 states and 447 transitions. [2024-09-12 18:29:34,287 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 5.333333333333333) internal successors, (48), 10 states have internal predecessors, (48), 5 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) [2024-09-12 18:29:34,287 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:29:34,287 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 447 transitions. [2024-09-12 18:29:34,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-09-12 18:29:34,288 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:29:34,288 INFO L216 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:29:34,302 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-09-12 18:29:34,492 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-09-12 18:29:34,493 INFO L399 AbstractCegarLoop]: === Iteration 28 === Targeting mainErr22ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-09-12 18:29:34,493 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:29:34,493 INFO L85 PathProgramCache]: Analyzing trace with hash -626627429, now seen corresponding path program 1 times [2024-09-12 18:29:34,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:29:34,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35032114] [2024-09-12 18:29:34,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:29:34,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:29:34,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:29:34,588 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:29:34,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:29:34,591 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 18:29:34,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:29:34,593 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-09-12 18:29:34,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:29:34,594 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-12 18:29:34,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:29:34,608 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-09-12 18:29:34,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:29:34,609 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-09-12 18:29:34,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:29:34,610 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-12 18:29:34,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:29:34,615 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-09-12 18:29:34,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:29:34,619 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-09-12 18:29:34,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:29:34,620 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-09-12 18:29:34,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:29:34,625 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-09-12 18:29:34,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:29:34,627 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-09-12 18:29:34,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:29:34,629 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2024-09-12 18:29:34,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:29:34,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35032114] [2024-09-12 18:29:34,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35032114] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 18:29:34,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 18:29:34,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-09-12 18:29:34,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147388300] [2024-09-12 18:29:34,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 18:29:34,634 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-12 18:29:34,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:29:34,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-12 18:29:34,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-12 18:29:34,634 INFO L87 Difference]: Start difference. First operand 369 states and 447 transitions. Second operand has 5 states, 4 states have (on average 11.5) internal successors, (46), 5 states have internal predecessors, (46), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-09-12 18:29:35,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:29:35,090 INFO L93 Difference]: Finished difference Result 369 states and 447 transitions. [2024-09-12 18:29:35,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-12 18:29:35,091 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 11.5) internal successors, (46), 5 states have internal predecessors, (46), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 101 [2024-09-12 18:29:35,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:29:35,101 INFO L225 Difference]: With dead ends: 369 [2024-09-12 18:29:35,101 INFO L226 Difference]: Without dead ends: 368 [2024-09-12 18:29:35,101 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-09-12 18:29:35,102 INFO L434 NwaCegarLoop]: 52 mSDtfsCounter, 42 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-12 18:29:35,102 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 146 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-12 18:29:35,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368 states. [2024-09-12 18:29:35,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368 to 368. [2024-09-12 18:29:35,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 368 states, 297 states have (on average 1.1851851851851851) internal successors, (352), 307 states have internal predecessors, (352), 48 states have call successors, (48), 14 states have call predecessors, (48), 13 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2024-09-12 18:29:35,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 446 transitions. [2024-09-12 18:29:35,252 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 446 transitions. Word has length 101 [2024-09-12 18:29:35,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:29:35,253 INFO L474 AbstractCegarLoop]: Abstraction has 368 states and 446 transitions. [2024-09-12 18:29:35,253 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 11.5) internal successors, (46), 5 states have internal predecessors, (46), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-09-12 18:29:35,253 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:29:35,253 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 446 transitions. [2024-09-12 18:29:35,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-09-12 18:29:35,254 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:29:35,254 INFO L216 NwaCegarLoop]: trace histogram [12, 12, 12, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:29:35,255 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-09-12 18:29:35,255 INFO L399 AbstractCegarLoop]: === Iteration 29 === Targeting mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-09-12 18:29:35,255 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:29:35,256 INFO L85 PathProgramCache]: Analyzing trace with hash -2063778163, now seen corresponding path program 1 times [2024-09-12 18:29:35,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:29:35,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378006645] [2024-09-12 18:29:35,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:29:35,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:29:35,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:29:35,326 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:29:35,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:29:35,328 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 18:29:35,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:29:35,329 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-09-12 18:29:35,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:29:35,330 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-12 18:29:35,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:29:35,332 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-09-12 18:29:35,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:29:35,333 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-09-12 18:29:35,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:29:35,335 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-12 18:29:35,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:29:35,336 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-09-12 18:29:35,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:29:35,338 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-09-12 18:29:35,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:29:35,339 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-12 18:29:35,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:29:35,340 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-09-12 18:29:35,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:29:35,343 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-09-12 18:29:35,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:29:35,344 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-09-12 18:29:35,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:29:35,346 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-09-12 18:29:35,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:29:35,347 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-09-12 18:29:35,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:29:35,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378006645] [2024-09-12 18:29:35,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378006645] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:29:35,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1788328166] [2024-09-12 18:29:35,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:29:35,348 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:29:35,348 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:29:35,349 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 18:29:35,350 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-09-12 18:29:35,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:29:35,388 INFO L262 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-09-12 18:29:35,389 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:29:35,428 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-09-12 18:29:35,428 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:29:35,517 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-09-12 18:29:35,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1788328166] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:29:35,517 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:29:35,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-09-12 18:29:35,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129396389] [2024-09-12 18:29:35,518 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:29:35,518 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-09-12 18:29:35,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:29:35,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-09-12 18:29:35,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2024-09-12 18:29:35,519 INFO L87 Difference]: Start difference. First operand 368 states and 446 transitions. Second operand has 11 states, 10 states have (on average 8.3) internal successors, (83), 11 states have internal predecessors, (83), 10 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (29), 10 states have call predecessors, (29), 10 states have call successors, (29) [2024-09-12 18:29:36,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:29:36,017 INFO L93 Difference]: Finished difference Result 739 states and 934 transitions. [2024-09-12 18:29:36,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-09-12 18:29:36,018 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 8.3) internal successors, (83), 11 states have internal predecessors, (83), 10 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (29), 10 states have call predecessors, (29), 10 states have call successors, (29) Word has length 103 [2024-09-12 18:29:36,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:29:36,020 INFO L225 Difference]: With dead ends: 739 [2024-09-12 18:29:36,021 INFO L226 Difference]: Without dead ends: 737 [2024-09-12 18:29:36,021 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 229 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2024-09-12 18:29:36,021 INFO L434 NwaCegarLoop]: 68 mSDtfsCounter, 275 mSDsluCounter, 246 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 291 SdHoareTripleChecker+Valid, 314 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 18:29:36,021 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [291 Valid, 314 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 18:29:36,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 737 states. [2024-09-12 18:29:36,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 737 to 445. [2024-09-12 18:29:36,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 445 states, 358 states have (on average 1.1731843575418994) internal successors, (420), 368 states have internal predecessors, (420), 64 states have call successors, (64), 14 states have call predecessors, (64), 13 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2024-09-12 18:29:36,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 546 transitions. [2024-09-12 18:29:36,209 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 546 transitions. Word has length 103 [2024-09-12 18:29:36,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:29:36,209 INFO L474 AbstractCegarLoop]: Abstraction has 445 states and 546 transitions. [2024-09-12 18:29:36,209 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 8.3) internal successors, (83), 11 states have internal predecessors, (83), 10 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (29), 10 states have call predecessors, (29), 10 states have call successors, (29) [2024-09-12 18:29:36,210 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:29:36,210 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 546 transitions. [2024-09-12 18:29:36,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-09-12 18:29:36,210 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:29:36,210 INFO L216 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:29:36,222 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-09-12 18:29:36,414 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-09-12 18:29:36,415 INFO L399 AbstractCegarLoop]: === Iteration 30 === Targeting mainErr23ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-09-12 18:29:36,415 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:29:36,415 INFO L85 PathProgramCache]: Analyzing trace with hash 2049386318, now seen corresponding path program 1 times [2024-09-12 18:29:36,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:29:36,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739139000] [2024-09-12 18:29:36,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:29:36,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:29:36,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 18:29:36,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [66030510] [2024-09-12 18:29:36,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:29:36,428 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:29:36,428 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:29:36,429 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 18:29:36,431 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-09-12 18:29:36,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:29:36,488 INFO L262 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-09-12 18:29:36,489 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:29:36,849 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-09-12 18:29:36,849 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:29:37,735 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-09-12 18:29:37,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:29:37,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739139000] [2024-09-12 18:29:37,735 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 18:29:37,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [66030510] [2024-09-12 18:29:37,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [66030510] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:29:37,736 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-12 18:29:37,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 16 [2024-09-12 18:29:37,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085329662] [2024-09-12 18:29:37,736 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-12 18:29:37,736 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-09-12 18:29:37,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:29:37,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-09-12 18:29:37,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2024-09-12 18:29:37,737 INFO L87 Difference]: Start difference. First operand 445 states and 546 transitions. Second operand has 17 states, 16 states have (on average 5.75) internal successors, (92), 17 states have internal predecessors, (92), 9 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (22), 9 states have call predecessors, (22), 9 states have call successors, (22) [2024-09-12 18:29:39,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:29:39,980 INFO L93 Difference]: Finished difference Result 467 states and 577 transitions. [2024-09-12 18:29:39,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-09-12 18:29:39,981 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 5.75) internal successors, (92), 17 states have internal predecessors, (92), 9 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (22), 9 states have call predecessors, (22), 9 states have call successors, (22) Word has length 102 [2024-09-12 18:29:39,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:29:39,983 INFO L225 Difference]: With dead ends: 467 [2024-09-12 18:29:39,983 INFO L226 Difference]: Without dead ends: 466 [2024-09-12 18:29:39,983 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 187 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=218, Invalid=484, Unknown=0, NotChecked=0, Total=702 [2024-09-12 18:29:39,984 INFO L434 NwaCegarLoop]: 60 mSDtfsCounter, 141 mSDsluCounter, 267 mSDsCounter, 0 mSdLazyCounter, 497 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 327 SdHoareTripleChecker+Invalid, 566 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 497 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-09-12 18:29:39,984 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 327 Invalid, 566 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 497 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-09-12 18:29:39,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 466 states. [2024-09-12 18:29:40,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 466 to 459. [2024-09-12 18:29:40,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 459 states, 370 states have (on average 1.1783783783783783) internal successors, (436), 380 states have internal predecessors, (436), 66 states have call successors, (66), 14 states have call predecessors, (66), 13 states have return successors, (64), 64 states have call predecessors, (64), 64 states have call successors, (64) [2024-09-12 18:29:40,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 459 states to 459 states and 566 transitions. [2024-09-12 18:29:40,187 INFO L78 Accepts]: Start accepts. Automaton has 459 states and 566 transitions. Word has length 102 [2024-09-12 18:29:40,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:29:40,187 INFO L474 AbstractCegarLoop]: Abstraction has 459 states and 566 transitions. [2024-09-12 18:29:40,188 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 5.75) internal successors, (92), 17 states have internal predecessors, (92), 9 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (22), 9 states have call predecessors, (22), 9 states have call successors, (22) [2024-09-12 18:29:40,188 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:29:40,188 INFO L276 IsEmpty]: Start isEmpty. Operand 459 states and 566 transitions. [2024-09-12 18:29:40,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-09-12 18:29:40,188 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:29:40,189 INFO L216 NwaCegarLoop]: trace histogram [11, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:29:40,201 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-09-12 18:29:40,389 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,21 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:29:40,390 INFO L399 AbstractCegarLoop]: === Iteration 31 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-09-12 18:29:40,390 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:29:40,390 INFO L85 PathProgramCache]: Analyzing trace with hash 953535030, now seen corresponding path program 1 times [2024-09-12 18:29:40,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:29:40,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905228243] [2024-09-12 18:29:40,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:29:40,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:29:40,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 18:29:40,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2076229721] [2024-09-12 18:29:40,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:29:40,410 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:29:40,410 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:29:40,411 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 18:29:40,412 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-09-12 18:29:40,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:29:40,456 INFO L262 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-09-12 18:29:40,457 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:29:41,072 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 46 proven. 18 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2024-09-12 18:29:41,073 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:29:41,534 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 46 proven. 18 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2024-09-12 18:29:41,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:29:41,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905228243] [2024-09-12 18:29:41,535 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 18:29:41,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2076229721] [2024-09-12 18:29:41,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2076229721] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:29:41,535 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-12 18:29:41,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 13] total 27 [2024-09-12 18:29:41,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748384050] [2024-09-12 18:29:41,535 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-12 18:29:41,536 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-09-12 18:29:41,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:29:41,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-09-12 18:29:41,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=592, Unknown=0, NotChecked=0, Total=702 [2024-09-12 18:29:41,537 INFO L87 Difference]: Start difference. First operand 459 states and 566 transitions. Second operand has 27 states, 27 states have (on average 3.888888888888889) internal successors, (105), 23 states have internal predecessors, (105), 11 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (23), 12 states have call predecessors, (23), 9 states have call successors, (23) [2024-09-12 18:29:42,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:29:42,888 INFO L93 Difference]: Finished difference Result 489 states and 593 transitions. [2024-09-12 18:29:42,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-09-12 18:29:42,889 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.888888888888889) internal successors, (105), 23 states have internal predecessors, (105), 11 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (23), 12 states have call predecessors, (23), 9 states have call successors, (23) Word has length 106 [2024-09-12 18:29:42,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:29:42,891 INFO L225 Difference]: With dead ends: 489 [2024-09-12 18:29:42,891 INFO L226 Difference]: Without dead ends: 447 [2024-09-12 18:29:42,891 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 305 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=294, Invalid=1346, Unknown=0, NotChecked=0, Total=1640 [2024-09-12 18:29:42,892 INFO L434 NwaCegarLoop]: 32 mSDtfsCounter, 264 mSDsluCounter, 345 mSDsCounter, 0 mSdLazyCounter, 915 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 264 SdHoareTripleChecker+Valid, 377 SdHoareTripleChecker+Invalid, 1030 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 915 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-09-12 18:29:42,892 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [264 Valid, 377 Invalid, 1030 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 915 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-09-12 18:29:42,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2024-09-12 18:29:43,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 432. [2024-09-12 18:29:43,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 432 states, 344 states have (on average 1.1744186046511629) internal successors, (404), 355 states have internal predecessors, (404), 62 states have call successors, (62), 18 states have call predecessors, (62), 17 states have return successors, (60), 58 states have call predecessors, (60), 60 states have call successors, (60) [2024-09-12 18:29:43,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 432 states to 432 states and 526 transitions. [2024-09-12 18:29:43,141 INFO L78 Accepts]: Start accepts. Automaton has 432 states and 526 transitions. Word has length 106 [2024-09-12 18:29:43,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:29:43,141 INFO L474 AbstractCegarLoop]: Abstraction has 432 states and 526 transitions. [2024-09-12 18:29:43,141 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 3.888888888888889) internal successors, (105), 23 states have internal predecessors, (105), 11 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (23), 12 states have call predecessors, (23), 9 states have call successors, (23) [2024-09-12 18:29:43,142 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:29:43,142 INFO L276 IsEmpty]: Start isEmpty. Operand 432 states and 526 transitions. [2024-09-12 18:29:43,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-09-12 18:29:43,142 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:29:43,142 INFO L216 NwaCegarLoop]: trace histogram [11, 11, 11, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:29:43,155 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2024-09-12 18:29:43,343 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,22 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:29:43,343 INFO L399 AbstractCegarLoop]: === Iteration 32 === Targeting mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-09-12 18:29:43,343 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:29:43,343 INFO L85 PathProgramCache]: Analyzing trace with hash 1380056169, now seen corresponding path program 2 times [2024-09-12 18:29:43,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:29:43,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134310581] [2024-09-12 18:29:43,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:29:43,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:29:43,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 18:29:43,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [552809446] [2024-09-12 18:29:43,356 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 18:29:43,356 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:29:43,356 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:29:43,357 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 18:29:43,359 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-09-12 18:29:43,404 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 18:29:43,404 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 18:29:43,405 INFO L262 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-09-12 18:29:43,406 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:29:43,704 INFO L134 CoverageAnalysis]: Checked inductivity of 248 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-09-12 18:29:43,704 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:29:44,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:29:44,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134310581] [2024-09-12 18:29:44,092 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 18:29:44,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [552809446] [2024-09-12 18:29:44,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [552809446] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:29:44,092 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-09-12 18:29:44,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2024-09-12 18:29:44,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633335385] [2024-09-12 18:29:44,092 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-09-12 18:29:44,093 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-09-12 18:29:44,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:29:44,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-09-12 18:29:44,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2024-09-12 18:29:44,094 INFO L87 Difference]: Start difference. First operand 432 states and 526 transitions. Second operand has 11 states, 10 states have (on average 4.9) internal successors, (49), 11 states have internal predecessors, (49), 5 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) [2024-09-12 18:29:44,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:29:44,502 INFO L93 Difference]: Finished difference Result 450 states and 549 transitions. [2024-09-12 18:29:44,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-09-12 18:29:44,502 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 4.9) internal successors, (49), 11 states have internal predecessors, (49), 5 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) Word has length 106 [2024-09-12 18:29:44,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:29:44,504 INFO L225 Difference]: With dead ends: 450 [2024-09-12 18:29:44,504 INFO L226 Difference]: Without dead ends: 449 [2024-09-12 18:29:44,505 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2024-09-12 18:29:44,505 INFO L434 NwaCegarLoop]: 54 mSDtfsCounter, 33 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 429 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 263 SdHoareTripleChecker+Invalid, 431 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 429 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 18:29:44,505 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 263 Invalid, 431 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 429 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 18:29:44,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 449 states. [2024-09-12 18:29:44,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 449 to 432. [2024-09-12 18:29:44,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 432 states, 344 states have (on average 1.1686046511627908) internal successors, (402), 355 states have internal predecessors, (402), 62 states have call successors, (62), 18 states have call predecessors, (62), 17 states have return successors, (60), 58 states have call predecessors, (60), 60 states have call successors, (60) [2024-09-12 18:29:44,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 432 states to 432 states and 524 transitions. [2024-09-12 18:29:44,702 INFO L78 Accepts]: Start accepts. Automaton has 432 states and 524 transitions. Word has length 106 [2024-09-12 18:29:44,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:29:44,702 INFO L474 AbstractCegarLoop]: Abstraction has 432 states and 524 transitions. [2024-09-12 18:29:44,702 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 4.9) internal successors, (49), 11 states have internal predecessors, (49), 5 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) [2024-09-12 18:29:44,702 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:29:44,702 INFO L276 IsEmpty]: Start isEmpty. Operand 432 states and 524 transitions. [2024-09-12 18:29:44,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2024-09-12 18:29:44,703 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:29:44,703 INFO L216 NwaCegarLoop]: trace histogram [13, 13, 13, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:29:44,719 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-09-12 18:29:44,903 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2024-09-12 18:29:44,904 INFO L399 AbstractCegarLoop]: === Iteration 33 === Targeting mainErr20ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-09-12 18:29:44,904 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:29:44,904 INFO L85 PathProgramCache]: Analyzing trace with hash -586321270, now seen corresponding path program 2 times [2024-09-12 18:29:44,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:29:44,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591837049] [2024-09-12 18:29:44,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:29:44,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:29:44,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:29:45,016 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:29:45,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:29:45,020 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 18:29:45,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:29:45,024 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-09-12 18:29:45,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:29:45,026 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-12 18:29:45,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:29:45,027 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-09-12 18:29:45,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:29:45,029 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-09-12 18:29:45,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:29:45,030 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-12 18:29:45,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:29:45,031 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-09-12 18:29:45,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:29:45,033 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-09-12 18:29:45,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:29:45,034 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-12 18:29:45,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:29:45,036 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-09-12 18:29:45,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:29:45,038 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-09-12 18:29:45,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:29:45,041 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-09-12 18:29:45,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:29:45,043 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2024-09-12 18:29:45,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:29:45,044 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-09-12 18:29:45,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:29:45,046 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 7 proven. 28 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-09-12 18:29:45,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:29:45,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591837049] [2024-09-12 18:29:45,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591837049] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:29:45,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [959810299] [2024-09-12 18:29:45,047 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 18:29:45,047 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:29:45,047 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:29:45,048 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 18:29:45,056 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-09-12 18:29:45,112 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 18:29:45,112 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 18:29:45,113 INFO L262 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-09-12 18:29:45,115 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:29:45,209 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 25 proven. 10 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-09-12 18:29:45,209 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:29:45,387 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 25 proven. 10 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-09-12 18:29:45,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [959810299] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:29:45,387 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:29:45,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 6 [2024-09-12 18:29:45,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453571194] [2024-09-12 18:29:45,388 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:29:45,389 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-12 18:29:45,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:29:45,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-12 18:29:45,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-09-12 18:29:45,391 INFO L87 Difference]: Start difference. First operand 432 states and 524 transitions. Second operand has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 5 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (18), 5 states have call predecessors, (18), 5 states have call successors, (18) [2024-09-12 18:29:45,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:29:45,703 INFO L93 Difference]: Finished difference Result 449 states and 537 transitions. [2024-09-12 18:29:45,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-12 18:29:45,703 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 5 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (18), 5 states have call predecessors, (18), 5 states have call successors, (18) Word has length 122 [2024-09-12 18:29:45,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:29:45,708 INFO L225 Difference]: With dead ends: 449 [2024-09-12 18:29:45,711 INFO L226 Difference]: Without dead ends: 432 [2024-09-12 18:29:45,712 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 271 SyntacticMatches, 5 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-09-12 18:29:45,712 INFO L434 NwaCegarLoop]: 75 mSDtfsCounter, 26 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 231 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 18:29:45,713 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 231 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 18:29:45,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2024-09-12 18:29:45,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 430. [2024-09-12 18:29:45,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 430 states, 342 states have (on average 1.1578947368421053) internal successors, (396), 353 states have internal predecessors, (396), 62 states have call successors, (62), 18 states have call predecessors, (62), 17 states have return successors, (60), 58 states have call predecessors, (60), 60 states have call successors, (60) [2024-09-12 18:29:45,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 518 transitions. [2024-09-12 18:29:45,934 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 518 transitions. Word has length 122 [2024-09-12 18:29:45,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:29:45,934 INFO L474 AbstractCegarLoop]: Abstraction has 430 states and 518 transitions. [2024-09-12 18:29:45,934 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 5 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (18), 5 states have call predecessors, (18), 5 states have call successors, (18) [2024-09-12 18:29:45,935 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:29:45,935 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 518 transitions. [2024-09-12 18:29:45,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2024-09-12 18:29:45,935 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:29:45,935 INFO L216 NwaCegarLoop]: trace histogram [13, 13, 13, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:29:45,948 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-09-12 18:29:46,136 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2024-09-12 18:29:46,136 INFO L399 AbstractCegarLoop]: === Iteration 34 === Targeting mainErr17ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-09-12 18:29:46,136 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:29:46,137 INFO L85 PathProgramCache]: Analyzing trace with hash -1918855210, now seen corresponding path program 1 times [2024-09-12 18:29:46,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:29:46,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521870942] [2024-09-12 18:29:46,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:29:46,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:29:46,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:29:46,301 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:29:46,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:29:46,302 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 18:29:46,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:29:46,305 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-09-12 18:29:46,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:29:46,306 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-12 18:29:46,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:29:46,308 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-09-12 18:29:46,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:29:46,309 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-09-12 18:29:46,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:29:46,310 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-12 18:29:46,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:29:46,311 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-09-12 18:29:46,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:29:46,313 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-09-12 18:29:46,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:29:46,314 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-12 18:29:46,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:29:46,316 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-09-12 18:29:46,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:29:46,317 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-09-12 18:29:46,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:29:46,319 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-09-12 18:29:46,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:29:46,321 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2024-09-12 18:29:46,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:29:46,325 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-09-12 18:29:46,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:29:46,327 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 337 trivial. 0 not checked. [2024-09-12 18:29:46,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:29:46,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521870942] [2024-09-12 18:29:46,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521870942] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:29:46,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [582877740] [2024-09-12 18:29:46,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:29:46,327 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:29:46,328 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:29:46,329 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 18:29:46,330 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-09-12 18:29:46,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:29:46,375 INFO L262 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-09-12 18:29:46,377 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:29:55,631 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-09-12 18:29:55,631 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:29:56,520 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-09-12 18:29:56,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [582877740] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:29:56,520 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:29:56,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 24 [2024-09-12 18:29:56,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709480949] [2024-09-12 18:29:56,521 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:29:56,521 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-09-12 18:29:56,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:29:56,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-09-12 18:29:56,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=471, Unknown=2, NotChecked=0, Total=600 [2024-09-12 18:29:56,522 INFO L87 Difference]: Start difference. First operand 430 states and 518 transitions. Second operand has 25 states, 24 states have (on average 6.5) internal successors, (156), 25 states have internal predecessors, (156), 14 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (35), 14 states have call predecessors, (35), 14 states have call successors, (35) [2024-09-12 18:30:00,656 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-09-12 18:30:05,175 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-09-12 18:30:09,208 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-09-12 18:30:17,459 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-09-12 18:30:26,420 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-09-12 18:30:30,508 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-09-12 18:30:32,242 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.71s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-09-12 18:30:36,253 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-09-12 18:30:49,926 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-09-12 18:30:53,953 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-09-12 18:31:06,638 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.55s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-09-12 18:31:10,661 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-09-12 18:31:14,748 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-09-12 18:31:18,769 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-09-12 18:31:22,787 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-09-12 18:31:27,026 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-09-12 18:31:31,134 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-09-12 18:31:35,165 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-09-12 18:31:39,304 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-09-12 18:31:43,317 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-09-12 18:31:47,446 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.13s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-09-12 18:31:51,966 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-09-12 18:31:56,049 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.08s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-09-12 18:32:00,113 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-09-12 18:32:04,187 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.07s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-09-12 18:32:08,307 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-09-12 18:32:13,190 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-09-12 18:32:21,482 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-09-12 18:32:29,691 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.12s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-09-12 18:32:33,710 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-09-12 18:32:37,719 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-09-12 18:32:41,790 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-09-12 18:32:45,848 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.97s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-09-12 18:32:46,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:32:46,225 INFO L93 Difference]: Finished difference Result 605 states and 746 transitions. [2024-09-12 18:32:46,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-09-12 18:32:46,226 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 6.5) internal successors, (156), 25 states have internal predecessors, (156), 14 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (35), 14 states have call predecessors, (35), 14 states have call successors, (35) Word has length 128 [2024-09-12 18:32:46,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:32:46,228 INFO L225 Difference]: With dead ends: 605 [2024-09-12 18:32:46,228 INFO L226 Difference]: Without dead ends: 604 [2024-09-12 18:32:46,228 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 311 GetRequests, 270 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 265 ImplicationChecksByTransitivity, 43.6s TimeCoverageRelationStatistics Valid=460, Invalid=1336, Unknown=10, NotChecked=0, Total=1806 [2024-09-12 18:32:46,229 INFO L434 NwaCegarLoop]: 87 mSDtfsCounter, 697 mSDsluCounter, 543 mSDsCounter, 0 mSdLazyCounter, 574 mSolverCounterSat, 171 mSolverCounterUnsat, 33 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 134.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 697 SdHoareTripleChecker+Valid, 630 SdHoareTripleChecker+Invalid, 778 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 171 IncrementalHoareTripleChecker+Valid, 574 IncrementalHoareTripleChecker+Invalid, 33 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 134.7s IncrementalHoareTripleChecker+Time [2024-09-12 18:32:46,229 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [697 Valid, 630 Invalid, 778 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [171 Valid, 574 Invalid, 33 Unknown, 0 Unchecked, 134.7s Time] [2024-09-12 18:32:46,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 604 states. [2024-09-12 18:32:46,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 604 to 356. [2024-09-12 18:32:46,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 356 states, 277 states have (on average 1.1191335740072201) internal successors, (310), 287 states have internal predecessors, (310), 54 states have call successors, (54), 18 states have call predecessors, (54), 17 states have return successors, (52), 50 states have call predecessors, (52), 52 states have call successors, (52) [2024-09-12 18:32:46,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 416 transitions. [2024-09-12 18:32:46,439 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 416 transitions. Word has length 128 [2024-09-12 18:32:46,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:32:46,439 INFO L474 AbstractCegarLoop]: Abstraction has 356 states and 416 transitions. [2024-09-12 18:32:46,439 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 6.5) internal successors, (156), 25 states have internal predecessors, (156), 14 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (35), 14 states have call predecessors, (35), 14 states have call successors, (35) [2024-09-12 18:32:46,439 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:32:46,439 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 416 transitions. [2024-09-12 18:32:46,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-09-12 18:32:46,440 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:32:46,440 INFO L216 NwaCegarLoop]: trace histogram [14, 14, 14, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:32:46,452 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2024-09-12 18:32:46,644 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2024-09-12 18:32:46,644 INFO L399 AbstractCegarLoop]: === Iteration 35 === Targeting mainErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-09-12 18:32:46,645 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:32:46,645 INFO L85 PathProgramCache]: Analyzing trace with hash -1829682440, now seen corresponding path program 3 times [2024-09-12 18:32:46,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:32:46,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622545346] [2024-09-12 18:32:46,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:32:46,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:32:46,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 18:32:46,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [794048618] [2024-09-12 18:32:46,662 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-12 18:32:46,662 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:32:46,662 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:32:46,663 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 18:32:46,668 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-09-12 18:32:46,713 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-09-12 18:32:46,713 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 18:32:46,716 INFO L262 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-09-12 18:32:46,718 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:33:15,542 WARN L293 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 9 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-09-12 18:33:15,798 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 64 proven. 3 refuted. 0 times theorem prover too weak. 354 trivial. 0 not checked. [2024-09-12 18:33:15,799 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:33:16,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:33:16,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622545346] [2024-09-12 18:33:16,994 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 18:33:16,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [794048618] [2024-09-12 18:33:16,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [794048618] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:33:16,994 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-09-12 18:33:16,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2024-09-12 18:33:16,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125227454] [2024-09-12 18:33:16,995 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-09-12 18:33:16,995 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-09-12 18:33:16,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:33:16,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-09-12 18:33:16,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=176, Unknown=3, NotChecked=0, Total=240 [2024-09-12 18:33:16,996 INFO L87 Difference]: Start difference. First operand 356 states and 416 transitions. Second operand has 12 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 11 states have internal predecessors, (47), 3 states have call successors, (11), 1 states have call predecessors, (11), 2 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2024-09-12 18:33:22,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:33:22,254 INFO L93 Difference]: Finished difference Result 361 states and 418 transitions. [2024-09-12 18:33:22,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-09-12 18:33:22,256 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 11 states have internal predecessors, (47), 3 states have call successors, (11), 1 states have call predecessors, (11), 2 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) Word has length 129 [2024-09-12 18:33:22,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:33:22,258 INFO L225 Difference]: With dead ends: 361 [2024-09-12 18:33:22,258 INFO L226 Difference]: Without dead ends: 360 [2024-09-12 18:33:22,259 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 21.4s TimeCoverageRelationStatistics Valid=128, Invalid=331, Unknown=3, NotChecked=0, Total=462 [2024-09-12 18:33:22,259 INFO L434 NwaCegarLoop]: 34 mSDtfsCounter, 75 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 384 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-09-12 18:33:22,259 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 161 Invalid, 403 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 384 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-09-12 18:33:22,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2024-09-12 18:33:22,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 356. [2024-09-12 18:33:22,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 356 states, 277 states have (on average 1.1046931407942238) internal successors, (306), 287 states have internal predecessors, (306), 54 states have call successors, (54), 18 states have call predecessors, (54), 17 states have return successors, (52), 50 states have call predecessors, (52), 52 states have call successors, (52) [2024-09-12 18:33:22,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 412 transitions. [2024-09-12 18:33:22,501 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 412 transitions. Word has length 129 [2024-09-12 18:33:22,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:33:22,502 INFO L474 AbstractCegarLoop]: Abstraction has 356 states and 412 transitions. [2024-09-12 18:33:22,502 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 11 states have internal predecessors, (47), 3 states have call successors, (11), 1 states have call predecessors, (11), 2 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2024-09-12 18:33:22,502 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:33:22,502 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 412 transitions. [2024-09-12 18:33:22,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2024-09-12 18:33:22,503 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:33:22,503 INFO L216 NwaCegarLoop]: trace histogram [13, 13, 13, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:33:22,516 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2024-09-12 18:33:22,705 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2024-09-12 18:33:22,705 INFO L399 AbstractCegarLoop]: === Iteration 36 === Targeting mainErr19ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-09-12 18:33:22,706 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:33:22,706 INFO L85 PathProgramCache]: Analyzing trace with hash -1478882952, now seen corresponding path program 1 times [2024-09-12 18:33:22,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:33:22,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826187898] [2024-09-12 18:33:22,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:33:22,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:33:22,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:33:23,029 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:33:23,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:33:23,031 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 18:33:23,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:33:23,032 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-09-12 18:33:23,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:33:23,036 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-12 18:33:23,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:33:23,040 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-09-12 18:33:23,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:33:23,042 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-09-12 18:33:23,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:33:23,043 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-12 18:33:23,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:33:23,045 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-09-12 18:33:23,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:33:23,047 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-09-12 18:33:23,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:33:23,048 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-12 18:33:23,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:33:23,050 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-09-12 18:33:23,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:33:23,051 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-09-12 18:33:23,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:33:23,053 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-09-12 18:33:23,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:33:23,055 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2024-09-12 18:33:23,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:33:23,056 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-09-12 18:33:23,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:33:23,058 INFO L134 CoverageAnalysis]: Checked inductivity of 356 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-09-12 18:33:23,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:33:23,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826187898] [2024-09-12 18:33:23,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826187898] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:33:23,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1418575105] [2024-09-12 18:33:23,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:33:23,059 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:33:23,059 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:33:23,060 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 18:33:23,061 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-09-12 18:33:23,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:33:23,107 INFO L262 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-09-12 18:33:23,109 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:33:23,366 INFO L134 CoverageAnalysis]: Checked inductivity of 356 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-09-12 18:33:23,366 INFO L327 TraceCheckSpWp]: Computing backward predicates...