./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loops-crafted-1/theatreSquare.c --full-output --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --cacsl2boogietranslator.check.absence.of.signed.integer.overflows true --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a9b967e5 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/certificate-witnesses-artifact/automizer/data/config -Xmx15G -Xms4m -jar /storage/repos/certificate-witnesses-artifact/automizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/certificate-witnesses-artifact/automizer/data -tc /storage/repos/certificate-witnesses-artifact/automizer/config/AutomizerReach.xml -i ../sv-benchmarks/c/loops-crafted-1/theatreSquare.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 90f363148c6ea94b18bb0ae0702d2476b109719554576ef0704192e7e62145c3 --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 18:20:18,875 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-12 18:20:18,940 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-12 18:20:18,945 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-12 18:20:18,948 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-12 18:20:18,977 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-12 18:20:18,979 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-12 18:20:18,979 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-12 18:20:18,980 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-12 18:20:18,982 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-12 18:20:18,982 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-12 18:20:18,983 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-12 18:20:18,983 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-12 18:20:18,983 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-12 18:20:18,984 INFO L153 SettingsManager]: * Use SBE=true [2024-09-12 18:20:18,984 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-12 18:20:18,984 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-12 18:20:18,984 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-12 18:20:18,984 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-12 18:20:18,985 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-12 18:20:18,985 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-12 18:20:18,989 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-12 18:20:18,989 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-12 18:20:18,989 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-12 18:20:18,989 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-12 18:20:18,989 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-12 18:20:18,990 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-12 18:20:18,990 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-12 18:20:18,990 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-12 18:20:18,990 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-12 18:20:18,990 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-12 18:20:18,990 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-12 18:20:18,990 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-12 18:20:18,991 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-12 18:20:18,991 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-12 18:20:18,995 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-12 18:20:18,996 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-12 18:20:18,996 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-12 18:20:18,996 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-12 18:20:18,996 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-12 18:20:18,996 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-12 18:20:18,999 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-12 18:20:18,999 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 90f363148c6ea94b18bb0ae0702d2476b109719554576ef0704192e7e62145c3 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2024-09-12 18:20:19,277 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-12 18:20:19,300 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-12 18:20:19,302 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-12 18:20:19,303 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-12 18:20:19,303 INFO L274 PluginConnector]: CDTParser initialized [2024-09-12 18:20:19,305 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/loops-crafted-1/theatreSquare.c [2024-09-12 18:20:20,619 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-12 18:20:20,761 INFO L384 CDTParser]: Found 1 translation units. [2024-09-12 18:20:20,762 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loops-crafted-1/theatreSquare.c [2024-09-12 18:20:20,769 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/4480de514/0867ce57446047efb5c5dd986eaa582c/FLAG750ec28e0 [2024-09-12 18:20:20,782 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/4480de514/0867ce57446047efb5c5dd986eaa582c [2024-09-12 18:20:20,784 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-12 18:20:20,786 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-12 18:20:20,789 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-12 18:20:20,789 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-12 18:20:20,793 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-12 18:20:20,795 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.09 06:20:20" (1/1) ... [2024-09-12 18:20:20,796 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e7b92cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 06:20:20, skipping insertion in model container [2024-09-12 18:20:20,796 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.09 06:20:20" (1/1) ... [2024-09-12 18:20:20,815 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-12 18:20:20,963 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loops-crafted-1/theatreSquare.c[370,383] [2024-09-12 18:20:20,993 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-12 18:20:21,003 INFO L200 MainTranslator]: Completed pre-run [2024-09-12 18:20:21,014 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loops-crafted-1/theatreSquare.c[370,383] [2024-09-12 18:20:21,027 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-12 18:20:21,044 INFO L204 MainTranslator]: Completed translation [2024-09-12 18:20:21,045 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 06:20:21 WrapperNode [2024-09-12 18:20:21,045 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-12 18:20:21,046 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-12 18:20:21,046 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-12 18:20:21,046 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-12 18:20:21,051 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 06:20:21" (1/1) ... [2024-09-12 18:20:21,057 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 06:20:21" (1/1) ... [2024-09-12 18:20:21,068 INFO L138 Inliner]: procedures = 15, calls = 10, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-12 18:20:21,069 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-12 18:20:21,069 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-12 18:20:21,070 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-12 18:20:21,070 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-12 18:20:21,079 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 06:20:21" (1/1) ... [2024-09-12 18:20:21,079 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 06:20:21" (1/1) ... [2024-09-12 18:20:21,081 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 06:20:21" (1/1) ... [2024-09-12 18:20:21,101 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 18:20:21,103 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 06:20:21" (1/1) ... [2024-09-12 18:20:21,103 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 06:20:21" (1/1) ... [2024-09-12 18:20:21,109 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 06:20:21" (1/1) ... [2024-09-12 18:20:21,115 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 06:20:21" (1/1) ... [2024-09-12 18:20:21,118 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 06:20:21" (1/1) ... [2024-09-12 18:20:21,121 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 06:20:21" (1/1) ... [2024-09-12 18:20:21,123 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-12 18:20:21,124 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-12 18:20:21,124 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-12 18:20:21,124 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-12 18:20:21,124 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 06:20:21" (1/1) ... [2024-09-12 18:20:21,130 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-12 18:20:21,140 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:20:21,154 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 18:20:21,157 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 18:20:21,194 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-12 18:20:21,195 INFO L130 BoogieDeclarations]: Found specification of procedure correct_version [2024-09-12 18:20:21,195 INFO L138 BoogieDeclarations]: Found implementation of procedure correct_version [2024-09-12 18:20:21,195 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-12 18:20:21,195 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-12 18:20:21,195 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-12 18:20:21,195 INFO L130 BoogieDeclarations]: Found specification of procedure student_version [2024-09-12 18:20:21,195 INFO L138 BoogieDeclarations]: Found implementation of procedure student_version [2024-09-12 18:20:21,195 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-12 18:20:21,196 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-12 18:20:21,196 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-12 18:20:21,196 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-12 18:20:21,196 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-12 18:20:21,196 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-12 18:20:21,258 INFO L242 CfgBuilder]: Building ICFG [2024-09-12 18:20:21,260 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-12 18:20:21,530 INFO L? ?]: Removed 56 outVars from TransFormulas that were not future-live. [2024-09-12 18:20:21,530 INFO L291 CfgBuilder]: Performing block encoding [2024-09-12 18:20:21,555 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-12 18:20:21,557 INFO L318 CfgBuilder]: Removed 6 assume(true) statements. [2024-09-12 18:20:21,558 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.09 06:20:21 BoogieIcfgContainer [2024-09-12 18:20:21,558 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-12 18:20:21,559 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-12 18:20:21,560 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-12 18:20:21,563 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-12 18:20:21,563 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.09 06:20:20" (1/3) ... [2024-09-12 18:20:21,564 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43691d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.09 06:20:21, skipping insertion in model container [2024-09-12 18:20:21,564 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 06:20:21" (2/3) ... [2024-09-12 18:20:21,565 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43691d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.09 06:20:21, skipping insertion in model container [2024-09-12 18:20:21,565 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.09 06:20:21" (3/3) ... [2024-09-12 18:20:21,566 INFO L112 eAbstractionObserver]: Analyzing ICFG theatreSquare.c [2024-09-12 18:20:21,580 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-12 18:20:21,581 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 25 error locations. [2024-09-12 18:20:21,636 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-12 18:20:21,643 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;@7fc8b57, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-12 18:20:21,643 INFO L337 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2024-09-12 18:20:21,647 INFO L276 IsEmpty]: Start isEmpty. Operand has 83 states, 47 states have (on average 1.8297872340425532) internal successors, (86), 72 states have internal predecessors, (86), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-09-12 18:20:21,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-09-12 18:20:21,653 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:20:21,654 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:20:21,654 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting correct_versionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [correct_versionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, correct_versionErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, correct_versionErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-09-12 18:20:21,665 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:20:21,665 INFO L85 PathProgramCache]: Analyzing trace with hash 15955090, now seen corresponding path program 1 times [2024-09-12 18:20:21,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:20:21,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407878702] [2024-09-12 18:20:21,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:20:21,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:20:21,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:20:21,922 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:20:21,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:20:21,936 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 18:20:21,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:20:21,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407878702] [2024-09-12 18:20:21,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407878702] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 18:20:21,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 18:20:21,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-09-12 18:20:21,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397827219] [2024-09-12 18:20:21,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 18:20:21,946 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-12 18:20:21,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:20:21,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-12 18:20:21,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-12 18:20:21,971 INFO L87 Difference]: Start difference. First operand has 83 states, 47 states have (on average 1.8297872340425532) internal successors, (86), 72 states have internal predecessors, (86), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 5 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:20:22,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:20:22,081 INFO L93 Difference]: Finished difference Result 156 states and 186 transitions. [2024-09-12 18:20:22,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-12 18:20:22,084 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2024-09-12 18:20:22,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:20:22,097 INFO L225 Difference]: With dead ends: 156 [2024-09-12 18:20:22,097 INFO L226 Difference]: Without dead ends: 81 [2024-09-12 18:20:22,100 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 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 18:20:22,102 INFO L434 NwaCegarLoop]: 81 mSDtfsCounter, 42 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 285 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 18:20:22,102 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 285 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 18:20:22,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2024-09-12 18:20:22,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 79. [2024-09-12 18:20:22,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 46 states have (on average 1.6956521739130435) internal successors, (78), 70 states have internal predecessors, (78), 5 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-12 18:20:22,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 86 transitions. [2024-09-12 18:20:22,137 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 86 transitions. Word has length 10 [2024-09-12 18:20:22,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:20:22,137 INFO L474 AbstractCegarLoop]: Abstraction has 79 states and 86 transitions. [2024-09-12 18:20:22,138 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:20:22,138 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:20:22,138 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 86 transitions. [2024-09-12 18:20:22,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-09-12 18:20:22,139 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:20:22,139 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:20:22,139 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-12 18:20:22,139 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [correct_versionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, correct_versionErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, correct_versionErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-09-12 18:20:22,140 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:20:22,140 INFO L85 PathProgramCache]: Analyzing trace with hash 21759174, now seen corresponding path program 1 times [2024-09-12 18:20:22,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:20:22,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817473096] [2024-09-12 18:20:22,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:20:22,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:20:22,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:20:22,264 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:20:22,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:20:22,268 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 18:20:22,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:20:22,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817473096] [2024-09-12 18:20:22,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817473096] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 18:20:22,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 18:20:22,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-12 18:20:22,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140181685] [2024-09-12 18:20:22,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 18:20:22,271 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-12 18:20:22,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:20:22,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-12 18:20:22,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-12 18:20:22,272 INFO L87 Difference]: Start difference. First operand 79 states and 86 transitions. Second operand has 5 states, 5 states have (on average 1.2) internal successors, (6), 4 states have internal predecessors, (6), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:20:22,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:20:22,311 INFO L93 Difference]: Finished difference Result 84 states and 90 transitions. [2024-09-12 18:20:22,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-12 18:20:22,312 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.2) internal successors, (6), 4 states have internal predecessors, (6), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2024-09-12 18:20:22,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:20:22,313 INFO L225 Difference]: With dead ends: 84 [2024-09-12 18:20:22,313 INFO L226 Difference]: Without dead ends: 79 [2024-09-12 18:20:22,314 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 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 18:20:22,314 INFO L434 NwaCegarLoop]: 79 mSDtfsCounter, 2 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 308 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 18:20:22,315 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 308 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 18:20:22,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2024-09-12 18:20:22,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2024-09-12 18:20:22,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 46 states have (on average 1.673913043478261) internal successors, (77), 70 states have internal predecessors, (77), 5 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-12 18:20:22,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 85 transitions. [2024-09-12 18:20:22,324 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 85 transitions. Word has length 10 [2024-09-12 18:20:22,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:20:22,324 INFO L474 AbstractCegarLoop]: Abstraction has 79 states and 85 transitions. [2024-09-12 18:20:22,324 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.2) internal successors, (6), 4 states have internal predecessors, (6), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:20:22,324 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:20:22,325 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 85 transitions. [2024-09-12 18:20:22,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-09-12 18:20:22,325 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:20:22,325 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:20:22,325 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-09-12 18:20:22,325 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting correct_versionErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [correct_versionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, correct_versionErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, correct_versionErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-09-12 18:20:22,325 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:20:22,326 INFO L85 PathProgramCache]: Analyzing trace with hash 494606455, now seen corresponding path program 1 times [2024-09-12 18:20:22,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:20:22,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80431682] [2024-09-12 18:20:22,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:20:22,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:20:22,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:20:22,403 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:20:22,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:20:22,408 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 18:20:22,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:20:22,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80431682] [2024-09-12 18:20:22,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80431682] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 18:20:22,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 18:20:22,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-12 18:20:22,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222874215] [2024-09-12 18:20:22,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 18:20:22,409 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-12 18:20:22,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:20:22,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-12 18:20:22,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-12 18:20:22,410 INFO L87 Difference]: Start difference. First operand 79 states and 85 transitions. Second operand has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:20:22,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:20:22,468 INFO L93 Difference]: Finished difference Result 140 states and 151 transitions. [2024-09-12 18:20:22,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-12 18:20:22,468 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2024-09-12 18:20:22,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:20:22,469 INFO L225 Difference]: With dead ends: 140 [2024-09-12 18:20:22,469 INFO L226 Difference]: Without dead ends: 80 [2024-09-12 18:20:22,470 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 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 18:20:22,470 INFO L434 NwaCegarLoop]: 73 mSDtfsCounter, 41 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 257 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 18:20:22,471 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 257 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 18:20:22,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2024-09-12 18:20:22,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 79. [2024-09-12 18:20:22,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 46 states have (on average 1.6521739130434783) internal successors, (76), 70 states have internal predecessors, (76), 5 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-12 18:20:22,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 84 transitions. [2024-09-12 18:20:22,486 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 84 transitions. Word has length 11 [2024-09-12 18:20:22,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:20:22,491 INFO L474 AbstractCegarLoop]: Abstraction has 79 states and 84 transitions. [2024-09-12 18:20:22,491 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:20:22,492 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:20:22,492 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 84 transitions. [2024-09-12 18:20:22,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-09-12 18:20:22,492 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:20:22,492 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:20:22,492 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-09-12 18:20:22,493 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting correct_versionErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [correct_versionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, correct_versionErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, correct_versionErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-09-12 18:20:22,493 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:20:22,493 INFO L85 PathProgramCache]: Analyzing trace with hash 494607833, now seen corresponding path program 1 times [2024-09-12 18:20:22,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:20:22,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73860304] [2024-09-12 18:20:22,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:20:22,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:20:22,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:20:22,565 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:20:22,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:20:22,571 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 18:20:22,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:20:22,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73860304] [2024-09-12 18:20:22,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73860304] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 18:20:22,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 18:20:22,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-09-12 18:20:22,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326606055] [2024-09-12 18:20:22,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 18:20:22,573 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-12 18:20:22,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:20:22,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-12 18:20:22,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-12 18:20:22,573 INFO L87 Difference]: Start difference. First operand 79 states and 84 transitions. Second operand has 5 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:20:22,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:20:22,642 INFO L93 Difference]: Finished difference Result 81 states and 86 transitions. [2024-09-12 18:20:22,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-12 18:20:22,643 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2024-09-12 18:20:22,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:20:22,644 INFO L225 Difference]: With dead ends: 81 [2024-09-12 18:20:22,644 INFO L226 Difference]: Without dead ends: 80 [2024-09-12 18:20:22,645 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 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 18:20:22,645 INFO L434 NwaCegarLoop]: 74 mSDtfsCounter, 38 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 255 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 18:20:22,646 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 255 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 18:20:22,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2024-09-12 18:20:22,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2024-09-12 18:20:22,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 47 states have (on average 1.6382978723404256) internal successors, (77), 71 states have internal predecessors, (77), 5 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-12 18:20:22,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 85 transitions. [2024-09-12 18:20:22,663 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 85 transitions. Word has length 11 [2024-09-12 18:20:22,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:20:22,663 INFO L474 AbstractCegarLoop]: Abstraction has 80 states and 85 transitions. [2024-09-12 18:20:22,663 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:20:22,664 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:20:22,664 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 85 transitions. [2024-09-12 18:20:22,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-09-12 18:20:22,665 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:20:22,665 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:20:22,665 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-09-12 18:20:22,665 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting correct_versionErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [correct_versionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, correct_versionErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, correct_versionErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-09-12 18:20:22,666 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:20:22,666 INFO L85 PathProgramCache]: Analyzing trace with hash -1847026316, now seen corresponding path program 1 times [2024-09-12 18:20:22,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:20:22,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930464162] [2024-09-12 18:20:22,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:20:22,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:20:22,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:20:22,706 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:20:22,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:20:22,709 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 18:20:22,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:20:22,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930464162] [2024-09-12 18:20:22,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930464162] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 18:20:22,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 18:20:22,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-12 18:20:22,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854613820] [2024-09-12 18:20:22,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 18:20:22,714 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-12 18:20:22,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:20:22,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-12 18:20:22,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-12 18:20:22,715 INFO L87 Difference]: Start difference. First operand 80 states and 85 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:20:22,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:20:22,750 INFO L93 Difference]: Finished difference Result 84 states and 89 transitions. [2024-09-12 18:20:22,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-12 18:20:22,751 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2024-09-12 18:20:22,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:20:22,752 INFO L225 Difference]: With dead ends: 84 [2024-09-12 18:20:22,752 INFO L226 Difference]: Without dead ends: 82 [2024-09-12 18:20:22,753 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-12 18:20:22,754 INFO L434 NwaCegarLoop]: 77 mSDtfsCounter, 1 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 18:20:22,754 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 149 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 18:20:22,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2024-09-12 18:20:22,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2024-09-12 18:20:22,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 49 states have (on average 1.6122448979591837) internal successors, (79), 73 states have internal predecessors, (79), 5 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-12 18:20:22,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 87 transitions. [2024-09-12 18:20:22,762 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 87 transitions. Word has length 12 [2024-09-12 18:20:22,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:20:22,762 INFO L474 AbstractCegarLoop]: Abstraction has 82 states and 87 transitions. [2024-09-12 18:20:22,762 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:20:22,763 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:20:22,763 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 87 transitions. [2024-09-12 18:20:22,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-09-12 18:20:22,763 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:20:22,763 INFO L216 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:20:22,763 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-09-12 18:20:22,763 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting correct_versionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [correct_versionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, correct_versionErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, correct_versionErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-09-12 18:20:22,764 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:20:22,764 INFO L85 PathProgramCache]: Analyzing trace with hash -1934904483, now seen corresponding path program 1 times [2024-09-12 18:20:22,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:20:22,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484068192] [2024-09-12 18:20:22,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:20:22,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:20:22,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:20:22,833 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:20:22,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:20:22,839 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:20:22,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:20:22,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484068192] [2024-09-12 18:20:22,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1484068192] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:20:22,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [679264972] [2024-09-12 18:20:22,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:20:22,843 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:20:22,843 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:20:22,845 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 18:20:22,848 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 18:20:22,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:20:22,886 INFO L262 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-09-12 18:20:22,889 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:20:22,962 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 18:20:22,963 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-12 18:20:22,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [679264972] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 18:20:22,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-12 18:20:22,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-09-12 18:20:22,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12320482] [2024-09-12 18:20:22,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 18:20:22,964 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-12 18:20:22,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:20:22,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-12 18:20:22,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-09-12 18:20:22,964 INFO L87 Difference]: Start difference. First operand 82 states and 87 transitions. Second operand has 6 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:20:23,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:20:23,026 INFO L93 Difference]: Finished difference Result 82 states and 87 transitions. [2024-09-12 18:20:23,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-12 18:20:23,028 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2024-09-12 18:20:23,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:20:23,029 INFO L225 Difference]: With dead ends: 82 [2024-09-12 18:20:23,029 INFO L226 Difference]: Without dead ends: 81 [2024-09-12 18:20:23,029 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-09-12 18:20:23,030 INFO L434 NwaCegarLoop]: 71 mSDtfsCounter, 39 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 245 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 18:20:23,030 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 245 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 18:20:23,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2024-09-12 18:20:23,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2024-09-12 18:20:23,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 49 states have (on average 1.5918367346938775) internal successors, (78), 72 states have internal predecessors, (78), 5 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-12 18:20:23,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 86 transitions. [2024-09-12 18:20:23,044 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 86 transitions. Word has length 15 [2024-09-12 18:20:23,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:20:23,044 INFO L474 AbstractCegarLoop]: Abstraction has 81 states and 86 transitions. [2024-09-12 18:20:23,045 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:20:23,045 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:20:23,045 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 86 transitions. [2024-09-12 18:20:23,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-09-12 18:20:23,047 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:20:23,047 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:20:23,060 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 18:20:23,248 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-09-12 18:20:23,249 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting correct_versionErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [correct_versionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, correct_versionErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, correct_versionErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-09-12 18:20:23,249 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:20:23,249 INFO L85 PathProgramCache]: Analyzing trace with hash 147501836, now seen corresponding path program 1 times [2024-09-12 18:20:23,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:20:23,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556175108] [2024-09-12 18:20:23,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:20:23,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:20:23,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:20:23,299 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:20:23,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:20:23,302 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-12 18:20:23,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:20:23,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556175108] [2024-09-12 18:20:23,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556175108] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 18:20:23,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 18:20:23,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-09-12 18:20:23,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68444558] [2024-09-12 18:20:23,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 18:20:23,303 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-12 18:20:23,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:20:23,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-12 18:20:23,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-12 18:20:23,304 INFO L87 Difference]: Start difference. First operand 81 states and 86 transitions. Second operand has 5 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:20:23,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:20:23,340 INFO L93 Difference]: Finished difference Result 85 states and 92 transitions. [2024-09-12 18:20:23,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-12 18:20:23,341 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2024-09-12 18:20:23,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:20:23,342 INFO L225 Difference]: With dead ends: 85 [2024-09-12 18:20:23,342 INFO L226 Difference]: Without dead ends: 84 [2024-09-12 18:20:23,342 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 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 18:20:23,343 INFO L434 NwaCegarLoop]: 68 mSDtfsCounter, 42 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 237 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 18:20:23,343 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 237 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 18:20:23,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2024-09-12 18:20:23,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 83. [2024-09-12 18:20:23,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 51 states have (on average 1.588235294117647) internal successors, (81), 74 states have internal predecessors, (81), 5 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-12 18:20:23,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 89 transitions. [2024-09-12 18:20:23,361 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 89 transitions. Word has length 16 [2024-09-12 18:20:23,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:20:23,362 INFO L474 AbstractCegarLoop]: Abstraction has 83 states and 89 transitions. [2024-09-12 18:20:23,362 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:20:23,362 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:20:23,363 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 89 transitions. [2024-09-12 18:20:23,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-09-12 18:20:23,363 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:20:23,363 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:20:23,364 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-09-12 18:20:23,364 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting correct_versionErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [correct_versionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, correct_versionErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, correct_versionErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-09-12 18:20:23,364 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:20:23,364 INFO L85 PathProgramCache]: Analyzing trace with hash 147503214, now seen corresponding path program 1 times [2024-09-12 18:20:23,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:20:23,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654819624] [2024-09-12 18:20:23,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:20:23,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:20:23,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:20:23,419 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:20:23,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:20:23,422 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:20:23,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:20:23,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654819624] [2024-09-12 18:20:23,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654819624] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:20:23,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1456399770] [2024-09-12 18:20:23,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:20:23,425 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:20:23,425 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:20:23,427 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 18:20:23,430 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 18:20:23,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:20:23,470 INFO L262 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-09-12 18:20:23,471 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:20:23,557 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:20:23,557 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:20:23,660 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:20:23,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1456399770] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:20:23,660 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:20:23,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 15 [2024-09-12 18:20:23,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471122371] [2024-09-12 18:20:23,660 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:20:23,661 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-09-12 18:20:23,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:20:23,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-09-12 18:20:23,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2024-09-12 18:20:23,661 INFO L87 Difference]: Start difference. First operand 83 states and 89 transitions. Second operand has 16 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 13 states have internal predecessors, (32), 4 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:20:23,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:20:23,826 INFO L93 Difference]: Finished difference Result 94 states and 103 transitions. [2024-09-12 18:20:23,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-09-12 18:20:23,826 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 13 states have internal predecessors, (32), 4 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2024-09-12 18:20:23,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:20:23,827 INFO L225 Difference]: With dead ends: 94 [2024-09-12 18:20:23,827 INFO L226 Difference]: Without dead ends: 93 [2024-09-12 18:20:23,827 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=394, Unknown=0, NotChecked=0, Total=506 [2024-09-12 18:20:23,831 INFO L434 NwaCegarLoop]: 72 mSDtfsCounter, 157 mSDsluCounter, 508 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 580 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 18:20:23,831 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 580 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 18:20:23,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2024-09-12 18:20:23,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 91. [2024-09-12 18:20:23,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 59 states have (on average 1.576271186440678) internal successors, (93), 82 states have internal predecessors, (93), 5 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-12 18:20:23,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 101 transitions. [2024-09-12 18:20:23,845 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 101 transitions. Word has length 16 [2024-09-12 18:20:23,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:20:23,846 INFO L474 AbstractCegarLoop]: Abstraction has 91 states and 101 transitions. [2024-09-12 18:20:23,846 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 13 states have internal predecessors, (32), 4 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:20:23,846 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:20:23,846 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 101 transitions. [2024-09-12 18:20:23,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-09-12 18:20:23,847 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:20:23,847 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:20:23,859 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 18:20:24,050 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:20:24,051 INFO L399 AbstractCegarLoop]: === Iteration 9 === Targeting correct_versionErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [correct_versionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, correct_versionErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, correct_versionErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-09-12 18:20:24,051 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:20:24,051 INFO L85 PathProgramCache]: Analyzing trace with hash 277589682, now seen corresponding path program 1 times [2024-09-12 18:20:24,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:20:24,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400580003] [2024-09-12 18:20:24,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:20:24,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:20:24,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:20:24,092 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:20:24,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:20:24,095 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-12 18:20:24,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:20:24,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400580003] [2024-09-12 18:20:24,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400580003] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 18:20:24,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 18:20:24,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-09-12 18:20:24,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458684013] [2024-09-12 18:20:24,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 18:20:24,096 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-12 18:20:24,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:20:24,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-12 18:20:24,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-12 18:20:24,098 INFO L87 Difference]: Start difference. First operand 91 states and 101 transitions. Second operand has 5 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:20:24,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:20:24,139 INFO L93 Difference]: Finished difference Result 93 states and 103 transitions. [2024-09-12 18:20:24,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-12 18:20:24,140 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2024-09-12 18:20:24,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:20:24,140 INFO L225 Difference]: With dead ends: 93 [2024-09-12 18:20:24,140 INFO L226 Difference]: Without dead ends: 92 [2024-09-12 18:20:24,141 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 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 18:20:24,141 INFO L434 NwaCegarLoop]: 69 mSDtfsCounter, 40 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 239 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 18:20:24,141 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 239 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 18:20:24,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2024-09-12 18:20:24,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2024-09-12 18:20:24,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 60 states have (on average 1.5666666666666667) internal successors, (94), 83 states have internal predecessors, (94), 5 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-12 18:20:24,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 102 transitions. [2024-09-12 18:20:24,158 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 102 transitions. Word has length 17 [2024-09-12 18:20:24,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:20:24,158 INFO L474 AbstractCegarLoop]: Abstraction has 92 states and 102 transitions. [2024-09-12 18:20:24,158 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:20:24,159 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:20:24,159 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 102 transitions. [2024-09-12 18:20:24,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-09-12 18:20:24,159 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:20:24,159 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:20:24,159 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-09-12 18:20:24,160 INFO L399 AbstractCegarLoop]: === Iteration 10 === Targeting correct_versionErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [correct_versionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, correct_versionErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, correct_versionErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-09-12 18:20:24,160 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:20:24,160 INFO L85 PathProgramCache]: Analyzing trace with hash 277632383, now seen corresponding path program 1 times [2024-09-12 18:20:24,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:20:24,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48166082] [2024-09-12 18:20:24,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:20:24,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:20:24,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:20:24,194 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:20:24,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:20:24,198 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:20:24,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:20:24,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48166082] [2024-09-12 18:20:24,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48166082] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:20:24,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1342387100] [2024-09-12 18:20:24,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:20:24,199 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:20:24,199 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:20:24,201 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 18:20:24,202 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 18:20:24,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:20:24,242 INFO L262 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-09-12 18:20:24,242 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:20:24,257 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:20:24,257 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-12 18:20:24,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1342387100] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 18:20:24,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-12 18:20:24,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2024-09-12 18:20:24,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999873179] [2024-09-12 18:20:24,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 18:20:24,258 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-09-12 18:20:24,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:20:24,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-09-12 18:20:24,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-09-12 18:20:24,259 INFO L87 Difference]: Start difference. First operand 92 states and 102 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:20:24,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:20:24,281 INFO L93 Difference]: Finished difference Result 92 states and 102 transitions. [2024-09-12 18:20:24,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-12 18:20:24,281 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2024-09-12 18:20:24,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:20:24,282 INFO L225 Difference]: With dead ends: 92 [2024-09-12 18:20:24,282 INFO L226 Difference]: Without dead ends: 91 [2024-09-12 18:20:24,282 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 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 18:20:24,283 INFO L434 NwaCegarLoop]: 75 mSDtfsCounter, 23 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 18:20:24,283 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 172 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 18:20:24,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2024-09-12 18:20:24,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2024-09-12 18:20:24,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 60 states have (on average 1.5333333333333334) internal successors, (92), 82 states have internal predecessors, (92), 5 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-12 18:20:24,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 100 transitions. [2024-09-12 18:20:24,291 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 100 transitions. Word has length 17 [2024-09-12 18:20:24,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:20:24,291 INFO L474 AbstractCegarLoop]: Abstraction has 91 states and 100 transitions. [2024-09-12 18:20:24,292 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:20:24,292 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:20:24,292 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 100 transitions. [2024-09-12 18:20:24,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-09-12 18:20:24,292 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:20:24,293 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:20:24,305 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-09-12 18:20:24,493 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-09-12 18:20:24,493 INFO L399 AbstractCegarLoop]: === Iteration 11 === Targeting correct_versionErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [correct_versionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, correct_versionErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, correct_versionErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-09-12 18:20:24,494 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:20:24,494 INFO L85 PathProgramCache]: Analyzing trace with hash 15296186, now seen corresponding path program 1 times [2024-09-12 18:20:24,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:20:24,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8825545] [2024-09-12 18:20:24,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:20:24,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:20:24,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:20:24,521 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:20:24,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:20:24,523 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-12 18:20:24,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:20:24,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8825545] [2024-09-12 18:20:24,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8825545] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 18:20:24,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 18:20:24,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-12 18:20:24,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81520293] [2024-09-12 18:20:24,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 18:20:24,526 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-09-12 18:20:24,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:20:24,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-09-12 18:20:24,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-09-12 18:20:24,527 INFO L87 Difference]: Start difference. First operand 91 states and 100 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:20:24,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:20:24,566 INFO L93 Difference]: Finished difference Result 107 states and 117 transitions. [2024-09-12 18:20:24,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-12 18:20:24,566 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2024-09-12 18:20:24,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:20:24,568 INFO L225 Difference]: With dead ends: 107 [2024-09-12 18:20:24,568 INFO L226 Difference]: Without dead ends: 103 [2024-09-12 18:20:24,568 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 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 18:20:24,568 INFO L434 NwaCegarLoop]: 73 mSDtfsCounter, 20 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 18:20:24,568 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 145 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 18:20:24,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2024-09-12 18:20:24,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 99. [2024-09-12 18:20:24,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 68 states have (on average 1.5147058823529411) internal successors, (103), 90 states have internal predecessors, (103), 5 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-12 18:20:24,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 111 transitions. [2024-09-12 18:20:24,583 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 111 transitions. Word has length 18 [2024-09-12 18:20:24,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:20:24,584 INFO L474 AbstractCegarLoop]: Abstraction has 99 states and 111 transitions. [2024-09-12 18:20:24,584 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:20:24,584 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:20:24,584 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 111 transitions. [2024-09-12 18:20:24,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-09-12 18:20:24,585 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:20:24,585 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:20:24,585 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-09-12 18:20:24,585 INFO L399 AbstractCegarLoop]: === Iteration 12 === Targeting correct_versionErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [correct_versionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, correct_versionErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, correct_versionErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-09-12 18:20:24,586 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:20:24,586 INFO L85 PathProgramCache]: Analyzing trace with hash 16669328, now seen corresponding path program 1 times [2024-09-12 18:20:24,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:20:24,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899681801] [2024-09-12 18:20:24,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:20:24,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:20:24,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:20:24,614 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:20:24,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:20:24,617 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:20:24,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:20:24,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899681801] [2024-09-12 18:20:24,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899681801] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:20:24,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2020091548] [2024-09-12 18:20:24,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:20:24,617 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:20:24,618 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:20:24,619 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 18:20:24,621 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 18:20:24,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:20:24,657 INFO L262 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-09-12 18:20:24,658 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:20:24,676 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:20:24,677 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:20:24,701 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:20:24,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2020091548] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:20:24,701 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:20:24,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-09-12 18:20:24,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284116495] [2024-09-12 18:20:24,701 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:20:24,701 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-09-12 18:20:24,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:20:24,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-09-12 18:20:24,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-09-12 18:20:24,702 INFO L87 Difference]: Start difference. First operand 99 states and 111 transitions. Second operand has 7 states, 6 states have (on average 5.166666666666667) internal successors, (31), 7 states have internal predecessors, (31), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:20:24,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:20:24,752 INFO L93 Difference]: Finished difference Result 198 states and 230 transitions. [2024-09-12 18:20:24,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-12 18:20:24,753 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 5.166666666666667) internal successors, (31), 7 states have internal predecessors, (31), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2024-09-12 18:20:24,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:20:24,754 INFO L225 Difference]: With dead ends: 198 [2024-09-12 18:20:24,754 INFO L226 Difference]: Without dead ends: 197 [2024-09-12 18:20:24,755 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-09-12 18:20:24,755 INFO L434 NwaCegarLoop]: 73 mSDtfsCounter, 85 mSDsluCounter, 260 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 333 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 18:20:24,755 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 333 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 18:20:24,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2024-09-12 18:20:24,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 106. [2024-09-12 18:20:24,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 75 states have (on average 1.48) internal successors, (111), 97 states have internal predecessors, (111), 5 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-12 18:20:24,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 119 transitions. [2024-09-12 18:20:24,773 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 119 transitions. Word has length 18 [2024-09-12 18:20:24,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:20:24,773 INFO L474 AbstractCegarLoop]: Abstraction has 106 states and 119 transitions. [2024-09-12 18:20:24,773 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 5.166666666666667) internal successors, (31), 7 states have internal predecessors, (31), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:20:24,773 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:20:24,773 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 119 transitions. [2024-09-12 18:20:24,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-09-12 18:20:24,776 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:20:24,776 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:20:24,790 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-09-12 18:20:24,976 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:20:24,977 INFO L399 AbstractCegarLoop]: === Iteration 13 === Targeting correct_versionErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [correct_versionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, correct_versionErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, correct_versionErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-09-12 18:20:24,977 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:20:24,977 INFO L85 PathProgramCache]: Analyzing trace with hash 1814735516, now seen corresponding path program 1 times [2024-09-12 18:20:24,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:20:24,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839075690] [2024-09-12 18:20:24,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:20:24,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:20:24,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:20:24,995 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:20:24,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:20:24,997 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-12 18:20:24,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:20:24,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839075690] [2024-09-12 18:20:24,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839075690] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 18:20:24,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 18:20:24,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-12 18:20:24,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233974316] [2024-09-12 18:20:24,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 18:20:24,998 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-12 18:20:24,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:20:24,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-12 18:20:24,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-12 18:20:24,999 INFO L87 Difference]: Start difference. First operand 106 states and 119 transitions. Second operand has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:20:25,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:20:25,025 INFO L93 Difference]: Finished difference Result 120 states and 137 transitions. [2024-09-12 18:20:25,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-12 18:20:25,025 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2024-09-12 18:20:25,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:20:25,026 INFO L225 Difference]: With dead ends: 120 [2024-09-12 18:20:25,026 INFO L226 Difference]: Without dead ends: 118 [2024-09-12 18:20:25,027 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-12 18:20:25,027 INFO L434 NwaCegarLoop]: 73 mSDtfsCounter, 3 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 18:20:25,027 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 143 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 18:20:25,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2024-09-12 18:20:25,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 116. [2024-09-12 18:20:25,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 85 states have (on average 1.4705882352941178) internal successors, (125), 107 states have internal predecessors, (125), 5 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-12 18:20:25,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 133 transitions. [2024-09-12 18:20:25,039 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 133 transitions. Word has length 20 [2024-09-12 18:20:25,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:20:25,039 INFO L474 AbstractCegarLoop]: Abstraction has 116 states and 133 transitions. [2024-09-12 18:20:25,039 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:20:25,040 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:20:25,040 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 133 transitions. [2024-09-12 18:20:25,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-09-12 18:20:25,040 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:20:25,040 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 18:20:25,041 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-09-12 18:20:25,041 INFO L399 AbstractCegarLoop]: === Iteration 14 === Targeting correct_versionErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [correct_versionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, correct_versionErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, correct_versionErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-09-12 18:20:25,041 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:20:25,041 INFO L85 PathProgramCache]: Analyzing trace with hash 1894718582, now seen corresponding path program 1 times [2024-09-12 18:20:25,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:20:25,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266254103] [2024-09-12 18:20:25,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:20:25,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:20:25,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:20:25,125 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:20:25,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:20:25,127 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:20:25,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:20:25,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266254103] [2024-09-12 18:20:25,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266254103] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:20:25,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [117994217] [2024-09-12 18:20:25,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:20:25,128 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:20:25,128 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:20:25,130 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 18:20:25,131 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-09-12 18:20:25,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:20:25,164 INFO L262 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-09-12 18:20:25,165 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:20:25,232 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-12 18:20:25,233 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-12 18:20:25,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [117994217] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 18:20:25,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-12 18:20:25,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 11 [2024-09-12 18:20:25,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840584965] [2024-09-12 18:20:25,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 18:20:25,234 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-12 18:20:25,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:20:25,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-12 18:20:25,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-09-12 18:20:25,234 INFO L87 Difference]: Start difference. First operand 116 states and 133 transitions. Second operand has 6 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:20:25,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:20:25,297 INFO L93 Difference]: Finished difference Result 116 states and 133 transitions. [2024-09-12 18:20:25,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-12 18:20:25,298 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 21 [2024-09-12 18:20:25,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:20:25,299 INFO L225 Difference]: With dead ends: 116 [2024-09-12 18:20:25,299 INFO L226 Difference]: Without dead ends: 115 [2024-09-12 18:20:25,299 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-09-12 18:20:25,300 INFO L434 NwaCegarLoop]: 66 mSDtfsCounter, 36 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 291 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 18:20:25,300 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 291 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 18:20:25,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2024-09-12 18:20:25,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2024-09-12 18:20:25,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 85 states have (on average 1.4588235294117646) internal successors, (124), 106 states have internal predecessors, (124), 5 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-12 18:20:25,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 132 transitions. [2024-09-12 18:20:25,314 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 132 transitions. Word has length 21 [2024-09-12 18:20:25,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:20:25,314 INFO L474 AbstractCegarLoop]: Abstraction has 115 states and 132 transitions. [2024-09-12 18:20:25,315 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:20:25,315 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:20:25,315 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 132 transitions. [2024-09-12 18:20:25,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-09-12 18:20:25,315 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:20:25,316 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:20:25,328 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 18:20:25,516 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-09-12 18:20:25,517 INFO L399 AbstractCegarLoop]: === Iteration 15 === Targeting correct_versionErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [correct_versionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, correct_versionErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, correct_versionErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-09-12 18:20:25,517 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:20:25,517 INFO L85 PathProgramCache]: Analyzing trace with hash -1393266040, now seen corresponding path program 1 times [2024-09-12 18:20:25,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:20:25,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997487926] [2024-09-12 18:20:25,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:20:25,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:20:25,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:20:25,567 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:20:25,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:20:25,569 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-12 18:20:25,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:20:25,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997487926] [2024-09-12 18:20:25,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997487926] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:20:25,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2032139946] [2024-09-12 18:20:25,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:20:25,569 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:20:25,569 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:20:25,571 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 18:20:25,571 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 18:20:25,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:20:25,607 INFO L262 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-09-12 18:20:25,608 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:20:25,693 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-12 18:20:25,694 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:20:25,779 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-12 18:20:25,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2032139946] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:20:25,779 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:20:25,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 15 [2024-09-12 18:20:25,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917116535] [2024-09-12 18:20:25,780 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:20:25,780 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-09-12 18:20:25,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:20:25,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-09-12 18:20:25,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2024-09-12 18:20:25,781 INFO L87 Difference]: Start difference. First operand 115 states and 132 transitions. Second operand has 16 states, 12 states have (on average 4.166666666666667) internal successors, (50), 13 states have internal predecessors, (50), 4 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:20:25,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:20:25,976 INFO L93 Difference]: Finished difference Result 126 states and 146 transitions. [2024-09-12 18:20:25,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-09-12 18:20:25,976 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 12 states have (on average 4.166666666666667) internal successors, (50), 13 states have internal predecessors, (50), 4 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 22 [2024-09-12 18:20:25,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:20:25,977 INFO L225 Difference]: With dead ends: 126 [2024-09-12 18:20:25,977 INFO L226 Difference]: Without dead ends: 125 [2024-09-12 18:20:25,978 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=121, Invalid=431, Unknown=0, NotChecked=0, Total=552 [2024-09-12 18:20:25,979 INFO L434 NwaCegarLoop]: 67 mSDtfsCounter, 109 mSDsluCounter, 762 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 829 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 18:20:25,979 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 829 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 18:20:25,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2024-09-12 18:20:25,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 123. [2024-09-12 18:20:25,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 93 states have (on average 1.4623655913978495) internal successors, (136), 114 states have internal predecessors, (136), 5 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-12 18:20:25,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 144 transitions. [2024-09-12 18:20:25,991 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 144 transitions. Word has length 22 [2024-09-12 18:20:25,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:20:25,991 INFO L474 AbstractCegarLoop]: Abstraction has 123 states and 144 transitions. [2024-09-12 18:20:25,991 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 12 states have (on average 4.166666666666667) internal successors, (50), 13 states have internal predecessors, (50), 4 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:20:25,991 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:20:25,991 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 144 transitions. [2024-09-12 18:20:25,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-09-12 18:20:25,993 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:20:25,993 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:20:26,013 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-09-12 18:20:26,193 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-09-12 18:20:26,194 INFO L399 AbstractCegarLoop]: === Iteration 16 === Targeting student_versionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [correct_versionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, correct_versionErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, correct_versionErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-09-12 18:20:26,194 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:20:26,194 INFO L85 PathProgramCache]: Analyzing trace with hash 1545585941, now seen corresponding path program 1 times [2024-09-12 18:20:26,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:20:26,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478654121] [2024-09-12 18:20:26,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:20:26,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:20:26,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:20:26,222 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:20:26,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:20:26,228 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-12 18:20:26,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:20:26,245 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:20:26,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:20:26,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478654121] [2024-09-12 18:20:26,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478654121] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 18:20:26,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 18:20:26,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-09-12 18:20:26,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950029059] [2024-09-12 18:20:26,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 18:20:26,246 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-12 18:20:26,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:20:26,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-12 18:20:26,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-09-12 18:20:26,247 INFO L87 Difference]: Start difference. First operand 123 states and 144 transitions. Second operand has 6 states, 5 states have (on average 3.6) internal successors, (18), 6 states have internal predecessors, (18), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-12 18:20:26,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:20:26,288 INFO L93 Difference]: Finished difference Result 164 states and 187 transitions. [2024-09-12 18:20:26,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-12 18:20:26,288 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 6 states have internal predecessors, (18), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 24 [2024-09-12 18:20:26,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:20:26,289 INFO L225 Difference]: With dead ends: 164 [2024-09-12 18:20:26,289 INFO L226 Difference]: Without dead ends: 123 [2024-09-12 18:20:26,290 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-09-12 18:20:26,290 INFO L434 NwaCegarLoop]: 70 mSDtfsCounter, 52 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 248 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 18:20:26,290 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 248 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 18:20:26,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2024-09-12 18:20:26,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2024-09-12 18:20:26,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 93 states have (on average 1.4408602150537635) internal successors, (134), 114 states have internal predecessors, (134), 5 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-12 18:20:26,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 142 transitions. [2024-09-12 18:20:26,303 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 142 transitions. Word has length 24 [2024-09-12 18:20:26,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:20:26,303 INFO L474 AbstractCegarLoop]: Abstraction has 123 states and 142 transitions. [2024-09-12 18:20:26,303 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 6 states have internal predecessors, (18), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-12 18:20:26,303 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:20:26,303 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 142 transitions. [2024-09-12 18:20:26,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-09-12 18:20:26,304 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:20:26,304 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:20:26,304 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-09-12 18:20:26,304 INFO L399 AbstractCegarLoop]: === Iteration 17 === Targeting correct_versionErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [correct_versionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, correct_versionErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, correct_versionErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-09-12 18:20:26,304 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:20:26,304 INFO L85 PathProgramCache]: Analyzing trace with hash -241623644, now seen corresponding path program 1 times [2024-09-12 18:20:26,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:20:26,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686050951] [2024-09-12 18:20:26,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:20:26,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:20:26,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:20:26,344 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:20:26,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:20:26,347 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-12 18:20:26,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:20:26,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686050951] [2024-09-12 18:20:26,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686050951] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:20:26,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1034428441] [2024-09-12 18:20:26,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:20:26,347 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:20:26,347 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:20:26,349 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 18:20:26,350 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 18:20:26,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:20:26,385 INFO L262 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-09-12 18:20:26,386 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:20:26,415 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-12 18:20:26,415 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-12 18:20:26,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1034428441] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 18:20:26,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-12 18:20:26,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-09-12 18:20:26,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248151311] [2024-09-12 18:20:26,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 18:20:26,416 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-12 18:20:26,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:20:26,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-12 18:20:26,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-09-12 18:20:26,417 INFO L87 Difference]: Start difference. First operand 123 states and 142 transitions. Second operand has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:20:26,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:20:26,457 INFO L93 Difference]: Finished difference Result 127 states and 144 transitions. [2024-09-12 18:20:26,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-12 18:20:26,458 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2024-09-12 18:20:26,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:20:26,458 INFO L225 Difference]: With dead ends: 127 [2024-09-12 18:20:26,458 INFO L226 Difference]: Without dead ends: 125 [2024-09-12 18:20:26,459 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-09-12 18:20:26,459 INFO L434 NwaCegarLoop]: 80 mSDtfsCounter, 33 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 18:20:26,459 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 152 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 18:20:26,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2024-09-12 18:20:26,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 121. [2024-09-12 18:20:26,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 93 states have (on average 1.3978494623655915) internal successors, (130), 112 states have internal predecessors, (130), 5 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-12 18:20:26,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 138 transitions. [2024-09-12 18:20:26,472 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 138 transitions. Word has length 23 [2024-09-12 18:20:26,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:20:26,472 INFO L474 AbstractCegarLoop]: Abstraction has 121 states and 138 transitions. [2024-09-12 18:20:26,472 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:20:26,473 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:20:26,473 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 138 transitions. [2024-09-12 18:20:26,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-09-12 18:20:26,473 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:20:26,473 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:20:26,485 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-09-12 18:20:26,677 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-09-12 18:20:26,678 INFO L399 AbstractCegarLoop]: === Iteration 18 === Targeting correct_versionErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [correct_versionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, correct_versionErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, correct_versionErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-09-12 18:20:26,678 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:20:26,678 INFO L85 PathProgramCache]: Analyzing trace with hash 1099601711, now seen corresponding path program 1 times [2024-09-12 18:20:26,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:20:26,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440651209] [2024-09-12 18:20:26,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:20:26,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:20:26,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:20:26,708 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:20:26,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:20:26,710 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-12 18:20:26,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:20:26,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440651209] [2024-09-12 18:20:26,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440651209] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:20:26,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [110498876] [2024-09-12 18:20:26,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:20:26,710 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:20:26,710 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:20:26,713 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 18:20:26,714 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 18:20:26,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:20:26,744 INFO L262 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-09-12 18:20:26,744 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:20:26,770 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-12 18:20:26,770 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:20:26,802 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-12 18:20:26,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [110498876] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:20:26,802 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:20:26,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-09-12 18:20:26,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424148908] [2024-09-12 18:20:26,803 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:20:26,803 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-09-12 18:20:26,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:20:26,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-09-12 18:20:26,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2024-09-12 18:20:26,804 INFO L87 Difference]: Start difference. First operand 121 states and 138 transitions. Second operand has 10 states, 9 states have (on average 5.888888888888889) internal successors, (53), 10 states have internal predecessors, (53), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:20:26,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:20:26,893 INFO L93 Difference]: Finished difference Result 163 states and 185 transitions. [2024-09-12 18:20:26,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-09-12 18:20:26,894 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 5.888888888888889) internal successors, (53), 10 states have internal predecessors, (53), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 24 [2024-09-12 18:20:26,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:20:26,895 INFO L225 Difference]: With dead ends: 163 [2024-09-12 18:20:26,895 INFO L226 Difference]: Without dead ends: 161 [2024-09-12 18:20:26,895 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=109, Unknown=0, NotChecked=0, Total=182 [2024-09-12 18:20:26,895 INFO L434 NwaCegarLoop]: 68 mSDtfsCounter, 115 mSDsluCounter, 260 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 328 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 18:20:26,896 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 328 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 18:20:26,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2024-09-12 18:20:26,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 132. [2024-09-12 18:20:26,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 104 states have (on average 1.3461538461538463) internal successors, (140), 123 states have internal predecessors, (140), 5 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-12 18:20:26,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 148 transitions. [2024-09-12 18:20:26,910 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 148 transitions. Word has length 24 [2024-09-12 18:20:26,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:20:26,911 INFO L474 AbstractCegarLoop]: Abstraction has 132 states and 148 transitions. [2024-09-12 18:20:26,911 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 5.888888888888889) internal successors, (53), 10 states have internal predecessors, (53), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:20:26,911 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:20:26,911 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 148 transitions. [2024-09-12 18:20:26,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-09-12 18:20:26,911 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:20:26,911 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, 1, 1] [2024-09-12 18:20:26,928 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 18:20:27,112 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,9 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:20:27,113 INFO L399 AbstractCegarLoop]: === Iteration 19 === Targeting correct_versionErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [correct_versionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, correct_versionErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, correct_versionErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-09-12 18:20:27,113 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:20:27,113 INFO L85 PathProgramCache]: Analyzing trace with hash -988629121, now seen corresponding path program 1 times [2024-09-12 18:20:27,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:20:27,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343836285] [2024-09-12 18:20:27,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:20:27,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:20:27,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:20:27,136 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:20:27,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:20:27,138 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-12 18:20:27,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:20:27,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343836285] [2024-09-12 18:20:27,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343836285] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:20:27,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1838528701] [2024-09-12 18:20:27,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:20:27,139 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:20:27,139 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:20:27,140 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 18:20:27,141 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 18:20:27,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:20:27,172 INFO L262 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-09-12 18:20:27,172 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:20:27,208 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-09-12 18:20:27,208 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-12 18:20:27,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1838528701] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 18:20:27,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-12 18:20:27,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [3] total 7 [2024-09-12 18:20:27,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730841215] [2024-09-12 18:20:27,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 18:20:27,209 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-12 18:20:27,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:20:27,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-12 18:20:27,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-09-12 18:20:27,210 INFO L87 Difference]: Start difference. First operand 132 states and 148 transitions. Second operand has 5 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:20:27,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:20:27,252 INFO L93 Difference]: Finished difference Result 175 states and 191 transitions. [2024-09-12 18:20:27,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-12 18:20:27,252 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 25 [2024-09-12 18:20:27,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:20:27,253 INFO L225 Difference]: With dead ends: 175 [2024-09-12 18:20:27,253 INFO L226 Difference]: Without dead ends: 121 [2024-09-12 18:20:27,254 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-09-12 18:20:27,257 INFO L434 NwaCegarLoop]: 69 mSDtfsCounter, 37 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 237 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 18:20:27,257 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 237 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 18:20:27,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2024-09-12 18:20:27,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2024-09-12 18:20:27,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 93 states have (on average 1.3440860215053763) internal successors, (125), 112 states have internal predecessors, (125), 5 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-12 18:20:27,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 133 transitions. [2024-09-12 18:20:27,271 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 133 transitions. Word has length 25 [2024-09-12 18:20:27,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:20:27,271 INFO L474 AbstractCegarLoop]: Abstraction has 121 states and 133 transitions. [2024-09-12 18:20:27,271 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:20:27,271 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:20:27,271 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 133 transitions. [2024-09-12 18:20:27,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-09-12 18:20:27,272 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:20:27,272 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:20:27,284 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 18:20:27,472 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,10 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:20:27,472 INFO L399 AbstractCegarLoop]: === Iteration 20 === Targeting correct_versionErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [correct_versionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, correct_versionErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, correct_versionErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-09-12 18:20:27,473 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:20:27,473 INFO L85 PathProgramCache]: Analyzing trace with hash 815830862, now seen corresponding path program 2 times [2024-09-12 18:20:27,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:20:27,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635933836] [2024-09-12 18:20:27,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:20:27,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:20:27,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:20:27,548 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:20:27,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:20:27,550 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:20:27,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:20:27,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635933836] [2024-09-12 18:20:27,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635933836] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:20:27,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [187917166] [2024-09-12 18:20:27,551 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 18:20:27,551 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:20:27,551 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:20:27,552 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 18:20:27,553 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 18:20:27,585 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-09-12 18:20:27,585 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 18:20:27,586 INFO L262 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-09-12 18:20:27,586 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:20:27,661 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-09-12 18:20:27,662 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:20:27,734 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-09-12 18:20:27,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [187917166] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:20:27,735 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:20:27,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 5] total 16 [2024-09-12 18:20:27,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388042295] [2024-09-12 18:20:27,735 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:20:27,735 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-09-12 18:20:27,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:20:27,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-09-12 18:20:27,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=234, Unknown=0, NotChecked=0, Total=272 [2024-09-12 18:20:27,736 INFO L87 Difference]: Start difference. First operand 121 states and 133 transitions. Second operand has 17 states, 13 states have (on average 3.230769230769231) internal successors, (42), 14 states have internal predecessors, (42), 4 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:20:27,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:20:27,959 INFO L93 Difference]: Finished difference Result 121 states and 133 transitions. [2024-09-12 18:20:27,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-09-12 18:20:27,960 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 13 states have (on average 3.230769230769231) internal successors, (42), 14 states have internal predecessors, (42), 4 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 26 [2024-09-12 18:20:27,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:20:27,961 INFO L225 Difference]: With dead ends: 121 [2024-09-12 18:20:27,961 INFO L226 Difference]: Without dead ends: 120 [2024-09-12 18:20:27,961 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=139, Invalid=511, Unknown=0, NotChecked=0, Total=650 [2024-09-12 18:20:27,962 INFO L434 NwaCegarLoop]: 71 mSDtfsCounter, 64 mSDsluCounter, 738 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 809 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 18:20:27,962 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 809 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 198 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 18:20:27,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2024-09-12 18:20:27,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2024-09-12 18:20:27,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 93 states have (on average 1.3225806451612903) internal successors, (123), 111 states have internal predecessors, (123), 5 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-12 18:20:27,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 131 transitions. [2024-09-12 18:20:27,993 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 131 transitions. Word has length 26 [2024-09-12 18:20:27,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:20:27,993 INFO L474 AbstractCegarLoop]: Abstraction has 120 states and 131 transitions. [2024-09-12 18:20:27,993 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 13 states have (on average 3.230769230769231) internal successors, (42), 14 states have internal predecessors, (42), 4 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:20:27,994 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:20:27,994 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 131 transitions. [2024-09-12 18:20:27,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-09-12 18:20:27,994 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:20:27,994 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, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:20:28,011 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 18:20:28,198 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,11 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:20:28,199 INFO L399 AbstractCegarLoop]: === Iteration 21 === Targeting correct_versionErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [correct_versionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, correct_versionErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, correct_versionErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-09-12 18:20:28,199 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:20:28,199 INFO L85 PathProgramCache]: Analyzing trace with hash -1958918827, now seen corresponding path program 1 times [2024-09-12 18:20:28,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:20:28,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905445785] [2024-09-12 18:20:28,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:20:28,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:20:28,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:20:28,220 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:20:28,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:20:28,222 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-12 18:20:28,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:20:28,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905445785] [2024-09-12 18:20:28,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905445785] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:20:28,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [896668596] [2024-09-12 18:20:28,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:20:28,223 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:20:28,223 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:20:28,224 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 18:20:28,226 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 18:20:28,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:20:28,258 INFO L262 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-09-12 18:20:28,259 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:20:28,271 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-12 18:20:28,271 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-12 18:20:28,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [896668596] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 18:20:28,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-12 18:20:28,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2024-09-12 18:20:28,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899060536] [2024-09-12 18:20:28,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 18:20:28,271 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-09-12 18:20:28,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:20:28,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-09-12 18:20:28,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-09-12 18:20:28,272 INFO L87 Difference]: Start difference. First operand 120 states and 131 transitions. Second operand has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 4 states have internal predecessors, (26), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:20:28,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:20:28,299 INFO L93 Difference]: Finished difference Result 120 states and 131 transitions. [2024-09-12 18:20:28,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-12 18:20:28,300 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 4 states have internal predecessors, (26), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 30 [2024-09-12 18:20:28,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:20:28,301 INFO L225 Difference]: With dead ends: 120 [2024-09-12 18:20:28,301 INFO L226 Difference]: Without dead ends: 119 [2024-09-12 18:20:28,301 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 31 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 18:20:28,301 INFO L434 NwaCegarLoop]: 69 mSDtfsCounter, 3 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 18:20:28,301 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 134 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 18:20:28,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2024-09-12 18:20:28,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2024-09-12 18:20:28,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 93 states have (on average 1.3118279569892473) internal successors, (122), 110 states have internal predecessors, (122), 5 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-12 18:20:28,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 130 transitions. [2024-09-12 18:20:28,315 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 130 transitions. Word has length 30 [2024-09-12 18:20:28,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:20:28,315 INFO L474 AbstractCegarLoop]: Abstraction has 119 states and 130 transitions. [2024-09-12 18:20:28,315 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 4 states have internal predecessors, (26), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:20:28,315 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:20:28,315 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 130 transitions. [2024-09-12 18:20:28,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-09-12 18:20:28,316 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:20:28,316 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:20:28,328 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 18:20:28,516 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,12 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:20:28,517 INFO L399 AbstractCegarLoop]: === Iteration 22 === Targeting correct_versionErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [correct_versionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, correct_versionErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, correct_versionErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-09-12 18:20:28,517 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:20:28,517 INFO L85 PathProgramCache]: Analyzing trace with hash -596941406, now seen corresponding path program 1 times [2024-09-12 18:20:28,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:20:28,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333289338] [2024-09-12 18:20:28,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:20:28,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:20:28,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:20:28,538 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:20:28,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:20:28,539 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-12 18:20:28,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:20:28,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333289338] [2024-09-12 18:20:28,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333289338] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:20:28,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1279873913] [2024-09-12 18:20:28,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:20:28,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:20:28,540 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:20:28,541 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 18:20:28,542 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 18:20:28,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:20:28,575 INFO L262 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-09-12 18:20:28,576 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:20:28,592 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-12 18:20:28,592 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:20:28,615 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-12 18:20:28,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1279873913] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:20:28,616 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:20:28,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-09-12 18:20:28,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414993226] [2024-09-12 18:20:28,616 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:20:28,618 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-09-12 18:20:28,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:20:28,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-09-12 18:20:28,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-09-12 18:20:28,618 INFO L87 Difference]: Start difference. First operand 119 states and 130 transitions. Second operand has 7 states, 6 states have (on average 7.333333333333333) internal successors, (44), 7 states have internal predecessors, (44), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:20:28,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:20:28,681 INFO L93 Difference]: Finished difference Result 138 states and 154 transitions. [2024-09-12 18:20:28,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-12 18:20:28,681 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 7.333333333333333) internal successors, (44), 7 states have internal predecessors, (44), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 31 [2024-09-12 18:20:28,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:20:28,682 INFO L225 Difference]: With dead ends: 138 [2024-09-12 18:20:28,682 INFO L226 Difference]: Without dead ends: 137 [2024-09-12 18:20:28,683 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-09-12 18:20:28,683 INFO L434 NwaCegarLoop]: 69 mSDtfsCounter, 3 mSDsluCounter, 269 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 338 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 18:20:28,683 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 338 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 18:20:28,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2024-09-12 18:20:28,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 134. [2024-09-12 18:20:28,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 108 states have (on average 1.3240740740740742) internal successors, (143), 125 states have internal predecessors, (143), 5 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-12 18:20:28,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 151 transitions. [2024-09-12 18:20:28,709 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 151 transitions. Word has length 31 [2024-09-12 18:20:28,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:20:28,709 INFO L474 AbstractCegarLoop]: Abstraction has 134 states and 151 transitions. [2024-09-12 18:20:28,709 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 7.333333333333333) internal successors, (44), 7 states have internal predecessors, (44), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:20:28,709 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:20:28,710 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 151 transitions. [2024-09-12 18:20:28,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-09-12 18:20:28,710 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:20:28,710 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:20:28,723 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-09-12 18:20:28,910 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-09-12 18:20:28,911 INFO L399 AbstractCegarLoop]: === Iteration 23 === Targeting correct_versionErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [correct_versionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, correct_versionErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, correct_versionErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-09-12 18:20:28,911 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:20:28,911 INFO L85 PathProgramCache]: Analyzing trace with hash -1518791480, now seen corresponding path program 2 times [2024-09-12 18:20:28,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:20:28,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999662429] [2024-09-12 18:20:28,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:20:28,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:20:28,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:20:28,983 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:20:28,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:20:28,985 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-12 18:20:28,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:20:28,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999662429] [2024-09-12 18:20:28,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1999662429] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:20:28,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1765527901] [2024-09-12 18:20:28,986 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 18:20:28,986 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:20:28,986 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:20:28,987 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 18:20:28,988 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 18:20:29,019 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-09-12 18:20:29,019 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 18:20:29,020 INFO L262 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-09-12 18:20:29,021 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:20:29,112 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-09-12 18:20:29,112 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:20:29,184 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-09-12 18:20:29,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1765527901] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:20:29,184 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:20:29,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 5] total 16 [2024-09-12 18:20:29,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837428769] [2024-09-12 18:20:29,184 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:20:29,185 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-09-12 18:20:29,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:20:29,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-09-12 18:20:29,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=234, Unknown=0, NotChecked=0, Total=272 [2024-09-12 18:20:29,186 INFO L87 Difference]: Start difference. First operand 134 states and 151 transitions. Second operand has 17 states, 13 states have (on average 4.615384615384615) internal successors, (60), 14 states have internal predecessors, (60), 4 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:20:29,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:20:29,398 INFO L93 Difference]: Finished difference Result 137 states and 156 transitions. [2024-09-12 18:20:29,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-09-12 18:20:29,398 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 13 states have (on average 4.615384615384615) internal successors, (60), 14 states have internal predecessors, (60), 4 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 32 [2024-09-12 18:20:29,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:20:29,399 INFO L225 Difference]: With dead ends: 137 [2024-09-12 18:20:29,399 INFO L226 Difference]: Without dead ends: 136 [2024-09-12 18:20:29,400 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=139, Invalid=511, Unknown=0, NotChecked=0, Total=650 [2024-09-12 18:20:29,400 INFO L434 NwaCegarLoop]: 67 mSDtfsCounter, 127 mSDsluCounter, 705 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 772 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 18:20:29,400 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 772 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 18:20:29,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2024-09-12 18:20:29,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 133. [2024-09-12 18:20:29,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 108 states have (on average 1.3148148148148149) internal successors, (142), 124 states have internal predecessors, (142), 5 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-12 18:20:29,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 150 transitions. [2024-09-12 18:20:29,416 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 150 transitions. Word has length 32 [2024-09-12 18:20:29,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:20:29,417 INFO L474 AbstractCegarLoop]: Abstraction has 133 states and 150 transitions. [2024-09-12 18:20:29,417 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 13 states have (on average 4.615384615384615) internal successors, (60), 14 states have internal predecessors, (60), 4 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:20:29,417 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:20:29,417 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 150 transitions. [2024-09-12 18:20:29,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-09-12 18:20:29,418 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:20:29,418 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:20:29,431 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 18:20:29,618 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,14 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:20:29,619 INFO L399 AbstractCegarLoop]: === Iteration 24 === Targeting student_versionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [correct_versionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, correct_versionErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, correct_versionErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-09-12 18:20:29,619 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:20:29,619 INFO L85 PathProgramCache]: Analyzing trace with hash 646208334, now seen corresponding path program 1 times [2024-09-12 18:20:29,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:20:29,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227007692] [2024-09-12 18:20:29,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:20:29,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:20:29,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:20:29,650 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:20:29,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:20:29,652 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-12 18:20:29,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:20:29,657 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-09-12 18:20:29,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:20:29,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227007692] [2024-09-12 18:20:29,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227007692] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 18:20:29,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 18:20:29,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-09-12 18:20:29,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648049143] [2024-09-12 18:20:29,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 18:20:29,659 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-12 18:20:29,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:20:29,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-12 18:20:29,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-12 18:20:29,659 INFO L87 Difference]: Start difference. First operand 133 states and 150 transitions. Second operand has 5 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-12 18:20:29,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:20:29,703 INFO L93 Difference]: Finished difference Result 137 states and 156 transitions. [2024-09-12 18:20:29,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-12 18:20:29,703 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 34 [2024-09-12 18:20:29,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:20:29,704 INFO L225 Difference]: With dead ends: 137 [2024-09-12 18:20:29,704 INFO L226 Difference]: Without dead ends: 136 [2024-09-12 18:20:29,705 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 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 18:20:29,705 INFO L434 NwaCegarLoop]: 64 mSDtfsCounter, 40 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 18:20:29,705 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 219 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 18:20:29,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2024-09-12 18:20:29,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 135. [2024-09-12 18:20:29,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 110 states have (on average 1.3181818181818181) internal successors, (145), 126 states have internal predecessors, (145), 5 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-12 18:20:29,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 153 transitions. [2024-09-12 18:20:29,730 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 153 transitions. Word has length 34 [2024-09-12 18:20:29,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:20:29,730 INFO L474 AbstractCegarLoop]: Abstraction has 135 states and 153 transitions. [2024-09-12 18:20:29,730 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-12 18:20:29,730 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:20:29,731 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 153 transitions. [2024-09-12 18:20:29,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-09-12 18:20:29,731 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:20:29,731 INFO L216 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:20:29,731 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-09-12 18:20:29,731 INFO L399 AbstractCegarLoop]: === Iteration 25 === Targeting correct_versionErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [correct_versionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, correct_versionErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, correct_versionErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-09-12 18:20:29,731 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:20:29,731 INFO L85 PathProgramCache]: Analyzing trace with hash -229096581, now seen corresponding path program 2 times [2024-09-12 18:20:29,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:20:29,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064795669] [2024-09-12 18:20:29,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:20:29,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:20:29,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:20:29,773 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:20:29,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:20:29,774 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:20:29,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:20:29,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064795669] [2024-09-12 18:20:29,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064795669] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:20:29,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [41077224] [2024-09-12 18:20:29,775 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 18:20:29,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:20:29,775 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:20:29,776 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 18:20:29,781 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 18:20:29,814 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 18:20:29,814 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 18:20:29,816 INFO L262 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-09-12 18:20:29,816 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:20:29,849 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:20:29,850 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:20:29,906 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:20:29,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [41077224] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:20:29,907 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:20:29,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2024-09-12 18:20:29,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246452845] [2024-09-12 18:20:29,907 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:20:29,907 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-09-12 18:20:29,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:20:29,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-09-12 18:20:29,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-09-12 18:20:29,908 INFO L87 Difference]: Start difference. First operand 135 states and 153 transitions. Second operand has 13 states, 12 states have (on average 5.083333333333333) internal successors, (61), 13 states have internal predecessors, (61), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:20:30,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:20:30,073 INFO L93 Difference]: Finished difference Result 688 states and 816 transitions. [2024-09-12 18:20:30,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-09-12 18:20:30,073 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 5.083333333333333) internal successors, (61), 13 states have internal predecessors, (61), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 33 [2024-09-12 18:20:30,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:20:30,076 INFO L225 Difference]: With dead ends: 688 [2024-09-12 18:20:30,076 INFO L226 Difference]: Without dead ends: 687 [2024-09-12 18:20:30,077 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-09-12 18:20:30,077 INFO L434 NwaCegarLoop]: 67 mSDtfsCounter, 240 mSDsluCounter, 321 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 240 SdHoareTripleChecker+Valid, 388 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 18:20:30,077 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [240 Valid, 388 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 18:20:30,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 687 states. [2024-09-12 18:20:30,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 687 to 165. [2024-09-12 18:20:30,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 140 states have (on average 1.292857142857143) internal successors, (181), 156 states have internal predecessors, (181), 5 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-12 18:20:30,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 189 transitions. [2024-09-12 18:20:30,121 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 189 transitions. Word has length 33 [2024-09-12 18:20:30,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:20:30,122 INFO L474 AbstractCegarLoop]: Abstraction has 165 states and 189 transitions. [2024-09-12 18:20:30,125 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 5.083333333333333) internal successors, (61), 13 states have internal predecessors, (61), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:20:30,125 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:20:30,125 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 189 transitions. [2024-09-12 18:20:30,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-09-12 18:20:30,126 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:20:30,126 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 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] [2024-09-12 18:20:30,139 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 18:20:30,329 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-09-12 18:20:30,330 INFO L399 AbstractCegarLoop]: === Iteration 26 === Targeting correct_versionErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [correct_versionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, correct_versionErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, correct_versionErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-09-12 18:20:30,330 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:20:30,330 INFO L85 PathProgramCache]: Analyzing trace with hash 1978225103, now seen corresponding path program 1 times [2024-09-12 18:20:30,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:20:30,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649369904] [2024-09-12 18:20:30,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:20:30,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:20:30,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:20:30,386 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:20:30,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:20:30,389 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-12 18:20:30,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:20:30,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649369904] [2024-09-12 18:20:30,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649369904] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:20:30,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2143687796] [2024-09-12 18:20:30,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:20:30,389 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:20:30,390 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:20:30,391 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 18:20:30,393 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 18:20:30,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:20:30,427 INFO L262 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-09-12 18:20:30,428 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:20:30,474 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-09-12 18:20:30,475 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:20:30,512 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-09-12 18:20:30,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2143687796] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:20:30,512 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:20:30,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2024-09-12 18:20:30,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624438034] [2024-09-12 18:20:30,513 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:20:30,513 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-09-12 18:20:30,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:20:30,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-09-12 18:20:30,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-09-12 18:20:30,514 INFO L87 Difference]: Start difference. First operand 165 states and 189 transitions. Second operand has 13 states, 13 states have (on average 4.846153846153846) internal successors, (63), 13 states have internal predecessors, (63), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:20:30,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:20:30,704 INFO L93 Difference]: Finished difference Result 288 states and 332 transitions. [2024-09-12 18:20:30,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-09-12 18:20:30,704 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.846153846153846) internal successors, (63), 13 states have internal predecessors, (63), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 34 [2024-09-12 18:20:30,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:20:30,706 INFO L225 Difference]: With dead ends: 288 [2024-09-12 18:20:30,706 INFO L226 Difference]: Without dead ends: 222 [2024-09-12 18:20:30,706 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 62 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=103, Invalid=317, Unknown=0, NotChecked=0, Total=420 [2024-09-12 18:20:30,707 INFO L434 NwaCegarLoop]: 61 mSDtfsCounter, 46 mSDsluCounter, 520 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 581 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 18:20:30,707 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 581 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 18:20:30,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2024-09-12 18:20:30,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 197. [2024-09-12 18:20:30,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 172 states have (on average 1.2674418604651163) internal successors, (218), 188 states have internal predecessors, (218), 5 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-12 18:20:30,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 226 transitions. [2024-09-12 18:20:30,755 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 226 transitions. Word has length 34 [2024-09-12 18:20:30,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:20:30,755 INFO L474 AbstractCegarLoop]: Abstraction has 197 states and 226 transitions. [2024-09-12 18:20:30,755 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.846153846153846) internal successors, (63), 13 states have internal predecessors, (63), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:20:30,755 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:20:30,755 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 226 transitions. [2024-09-12 18:20:30,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-09-12 18:20:30,756 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:20:30,756 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:20:30,769 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 18:20:30,959 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-09-12 18:20:30,959 INFO L399 AbstractCegarLoop]: === Iteration 27 === Targeting student_versionErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [correct_versionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, correct_versionErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, correct_versionErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-09-12 18:20:30,960 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:20:30,960 INFO L85 PathProgramCache]: Analyzing trace with hash -1442379398, now seen corresponding path program 1 times [2024-09-12 18:20:30,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:20:30,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621758749] [2024-09-12 18:20:30,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:20:30,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:20:30,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:20:31,005 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:20:31,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:20:31,007 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-12 18:20:31,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:20:31,013 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-09-12 18:20:31,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:20:31,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621758749] [2024-09-12 18:20:31,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621758749] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 18:20:31,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 18:20:31,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-12 18:20:31,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063695132] [2024-09-12 18:20:31,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 18:20:31,014 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-12 18:20:31,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:20:31,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-12 18:20:31,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-12 18:20:31,015 INFO L87 Difference]: Start difference. First operand 197 states and 226 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-12 18:20:31,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:20:31,082 INFO L93 Difference]: Finished difference Result 225 states and 256 transitions. [2024-09-12 18:20:31,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-12 18:20:31,083 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 35 [2024-09-12 18:20:31,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:20:31,084 INFO L225 Difference]: With dead ends: 225 [2024-09-12 18:20:31,084 INFO L226 Difference]: Without dead ends: 198 [2024-09-12 18:20:31,084 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 18:20:31,085 INFO L434 NwaCegarLoop]: 65 mSDtfsCounter, 40 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 225 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 18:20:31,085 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 225 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 18:20:31,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2024-09-12 18:20:31,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 197. [2024-09-12 18:20:31,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 172 states have (on average 1.2616279069767442) internal successors, (217), 188 states have internal predecessors, (217), 5 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-12 18:20:31,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 225 transitions. [2024-09-12 18:20:31,128 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 225 transitions. Word has length 35 [2024-09-12 18:20:31,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:20:31,129 INFO L474 AbstractCegarLoop]: Abstraction has 197 states and 225 transitions. [2024-09-12 18:20:31,129 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-12 18:20:31,129 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:20:31,129 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 225 transitions. [2024-09-12 18:20:31,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-09-12 18:20:31,129 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:20:31,129 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:20:31,129 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-09-12 18:20:31,130 INFO L399 AbstractCegarLoop]: === Iteration 28 === Targeting student_versionErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [correct_versionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, correct_versionErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, correct_versionErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-09-12 18:20:31,130 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:20:31,130 INFO L85 PathProgramCache]: Analyzing trace with hash -1442378020, now seen corresponding path program 1 times [2024-09-12 18:20:31,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:20:31,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612075174] [2024-09-12 18:20:31,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:20:31,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:20:31,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:20:31,157 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:20:31,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:20:31,159 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-12 18:20:31,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:20:31,164 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-09-12 18:20:31,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:20:31,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612075174] [2024-09-12 18:20:31,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612075174] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 18:20:31,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 18:20:31,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-09-12 18:20:31,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75247237] [2024-09-12 18:20:31,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 18:20:31,164 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-12 18:20:31,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:20:31,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-12 18:20:31,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-12 18:20:31,165 INFO L87 Difference]: Start difference. First operand 197 states and 225 transitions. Second operand has 5 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-12 18:20:31,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:20:31,234 INFO L93 Difference]: Finished difference Result 199 states and 227 transitions. [2024-09-12 18:20:31,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-12 18:20:31,235 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 35 [2024-09-12 18:20:31,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:20:31,236 INFO L225 Difference]: With dead ends: 199 [2024-09-12 18:20:31,236 INFO L226 Difference]: Without dead ends: 198 [2024-09-12 18:20:31,236 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 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 18:20:31,237 INFO L434 NwaCegarLoop]: 66 mSDtfsCounter, 37 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 223 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 18:20:31,237 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 223 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 18:20:31,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2024-09-12 18:20:31,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 198. [2024-09-12 18:20:31,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 173 states have (on average 1.260115606936416) internal successors, (218), 189 states have internal predecessors, (218), 5 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-12 18:20:31,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 226 transitions. [2024-09-12 18:20:31,282 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 226 transitions. Word has length 35 [2024-09-12 18:20:31,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:20:31,282 INFO L474 AbstractCegarLoop]: Abstraction has 198 states and 226 transitions. [2024-09-12 18:20:31,282 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-12 18:20:31,282 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:20:31,282 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 226 transitions. [2024-09-12 18:20:31,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-09-12 18:20:31,283 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:20:31,283 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:20:31,283 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-09-12 18:20:31,283 INFO L399 AbstractCegarLoop]: === Iteration 29 === Targeting correct_versionErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [correct_versionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, correct_versionErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, correct_versionErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-09-12 18:20:31,283 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:20:31,283 INFO L85 PathProgramCache]: Analyzing trace with hash 730270410, now seen corresponding path program 1 times [2024-09-12 18:20:31,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:20:31,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359693213] [2024-09-12 18:20:31,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:20:31,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:20:31,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:20:31,314 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:20:31,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:20:31,316 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-12 18:20:31,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:20:31,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359693213] [2024-09-12 18:20:31,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359693213] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:20:31,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1711040068] [2024-09-12 18:20:31,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:20:31,317 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:20:31,317 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:20:31,319 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 18:20:31,320 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 18:20:31,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:20:31,356 INFO L262 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-09-12 18:20:31,357 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:20:31,376 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-12 18:20:31,376 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:20:31,417 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-12 18:20:31,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1711040068] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:20:31,418 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:20:31,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-09-12 18:20:31,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741377852] [2024-09-12 18:20:31,418 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:20:31,418 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-09-12 18:20:31,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:20:31,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-09-12 18:20:31,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2024-09-12 18:20:31,419 INFO L87 Difference]: Start difference. First operand 198 states and 226 transitions. Second operand has 11 states, 10 states have (on average 6.9) internal successors, (69), 11 states have internal predecessors, (69), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:20:31,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:20:31,592 INFO L93 Difference]: Finished difference Result 487 states and 586 transitions. [2024-09-12 18:20:31,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-09-12 18:20:31,592 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 6.9) internal successors, (69), 11 states have internal predecessors, (69), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 34 [2024-09-12 18:20:31,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:20:31,596 INFO L225 Difference]: With dead ends: 487 [2024-09-12 18:20:31,596 INFO L226 Difference]: Without dead ends: 486 [2024-09-12 18:20:31,597 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 65 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 18:20:31,597 INFO L434 NwaCegarLoop]: 66 mSDtfsCounter, 153 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 203 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 18:20:31,597 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 203 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 18:20:31,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 486 states. [2024-09-12 18:20:31,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 486 to 248. [2024-09-12 18:20:31,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 223 states have (on average 1.2466367713004485) internal successors, (278), 239 states have internal predecessors, (278), 5 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-12 18:20:31,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 286 transitions. [2024-09-12 18:20:31,667 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 286 transitions. Word has length 34 [2024-09-12 18:20:31,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:20:31,668 INFO L474 AbstractCegarLoop]: Abstraction has 248 states and 286 transitions. [2024-09-12 18:20:31,668 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 6.9) internal successors, (69), 11 states have internal predecessors, (69), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:20:31,668 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:20:31,668 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 286 transitions. [2024-09-12 18:20:31,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-09-12 18:20:31,669 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:20:31,669 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:20:31,681 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 18:20:31,869 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28,17 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:20:31,870 INFO L399 AbstractCegarLoop]: === Iteration 30 === Targeting student_versionErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [correct_versionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, correct_versionErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, correct_versionErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-09-12 18:20:31,870 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:20:31,870 INFO L85 PathProgramCache]: Analyzing trace with hash -1764045552, now seen corresponding path program 1 times [2024-09-12 18:20:31,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:20:31,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156236019] [2024-09-12 18:20:31,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:20:31,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:20:31,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:20:31,895 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:20:31,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:20:31,897 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-12 18:20:31,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:20:31,901 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-09-12 18:20:31,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:20:31,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156236019] [2024-09-12 18:20:31,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [156236019] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 18:20:31,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 18:20:31,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-12 18:20:31,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433499902] [2024-09-12 18:20:31,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 18:20:31,902 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-12 18:20:31,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:20:31,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-12 18:20:31,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-12 18:20:31,903 INFO L87 Difference]: Start difference. First operand 248 states and 286 transitions. Second operand has 3 states, 2 states have (on average 15.0) internal successors, (30), 3 states have internal predecessors, (30), 1 states have call successors, (4), 1 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 18:20:31,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:20:31,975 INFO L93 Difference]: Finished difference Result 252 states and 290 transitions. [2024-09-12 18:20:31,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-12 18:20:31,976 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 15.0) internal successors, (30), 3 states have internal predecessors, (30), 1 states have call successors, (4), 1 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 36 [2024-09-12 18:20:31,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:20:31,977 INFO L225 Difference]: With dead ends: 252 [2024-09-12 18:20:31,977 INFO L226 Difference]: Without dead ends: 250 [2024-09-12 18:20:31,978 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-12 18:20:31,978 INFO L434 NwaCegarLoop]: 69 mSDtfsCounter, 1 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 18:20:31,978 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 133 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 18:20:31,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2024-09-12 18:20:32,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 250. [2024-09-12 18:20:32,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 225 states have (on average 1.2444444444444445) internal successors, (280), 241 states have internal predecessors, (280), 5 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-12 18:20:32,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 288 transitions. [2024-09-12 18:20:32,034 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 288 transitions. Word has length 36 [2024-09-12 18:20:32,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:20:32,035 INFO L474 AbstractCegarLoop]: Abstraction has 250 states and 288 transitions. [2024-09-12 18:20:32,035 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 15.0) internal successors, (30), 3 states have internal predecessors, (30), 1 states have call successors, (4), 1 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 18:20:32,035 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:20:32,035 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 288 transitions. [2024-09-12 18:20:32,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-09-12 18:20:32,035 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:20:32,036 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:20:32,036 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-09-12 18:20:32,036 INFO L399 AbstractCegarLoop]: === Iteration 31 === Targeting student_versionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [correct_versionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, correct_versionErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, correct_versionErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-09-12 18:20:32,036 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:20:32,036 INFO L85 PathProgramCache]: Analyzing trace with hash 538903200, now seen corresponding path program 1 times [2024-09-12 18:20:32,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:20:32,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190260605] [2024-09-12 18:20:32,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:20:32,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:20:32,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:20:32,083 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:20:32,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:20:32,085 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-12 18:20:32,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:20:32,094 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-09-12 18:20:32,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:20:32,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190260605] [2024-09-12 18:20:32,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190260605] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:20:32,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [467922999] [2024-09-12 18:20:32,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:20:32,095 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:20:32,095 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:20:32,098 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 18:20:32,101 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 18:20:32,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:20:32,138 INFO L262 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-09-12 18:20:32,139 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:20:32,246 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-12 18:20:32,246 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:20:32,405 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-12 18:20:32,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [467922999] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:20:32,406 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:20:32,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 9] total 16 [2024-09-12 18:20:32,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777793015] [2024-09-12 18:20:32,406 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:20:32,406 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-09-12 18:20:32,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:20:32,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-09-12 18:20:32,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2024-09-12 18:20:32,407 INFO L87 Difference]: Start difference. First operand 250 states and 288 transitions. Second operand has 16 states, 16 states have (on average 4.6875) internal successors, (75), 14 states have internal predecessors, (75), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-12 18:20:32,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:20:32,669 INFO L93 Difference]: Finished difference Result 324 states and 369 transitions. [2024-09-12 18:20:32,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-09-12 18:20:32,669 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.6875) internal successors, (75), 14 states have internal predecessors, (75), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 39 [2024-09-12 18:20:32,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:20:32,671 INFO L225 Difference]: With dead ends: 324 [2024-09-12 18:20:32,671 INFO L226 Difference]: Without dead ends: 288 [2024-09-12 18:20:32,673 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 69 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=74, Invalid=432, Unknown=0, NotChecked=0, Total=506 [2024-09-12 18:20:32,674 INFO L434 NwaCegarLoop]: 59 mSDtfsCounter, 118 mSDsluCounter, 603 mSDsCounter, 0 mSdLazyCounter, 259 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 662 SdHoareTripleChecker+Invalid, 265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 18:20:32,674 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 662 Invalid, 265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 259 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 18:20:32,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2024-09-12 18:20:32,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 276. [2024-09-12 18:20:32,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 248 states have (on average 1.2661290322580645) internal successors, (314), 265 states have internal predecessors, (314), 6 states have call successors, (6), 6 states have call predecessors, (6), 5 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2024-09-12 18:20:32,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 325 transitions. [2024-09-12 18:20:32,730 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 325 transitions. Word has length 39 [2024-09-12 18:20:32,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:20:32,730 INFO L474 AbstractCegarLoop]: Abstraction has 276 states and 325 transitions. [2024-09-12 18:20:32,730 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.6875) internal successors, (75), 14 states have internal predecessors, (75), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-12 18:20:32,730 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:20:32,730 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 325 transitions. [2024-09-12 18:20:32,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-09-12 18:20:32,731 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:20:32,731 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:20:32,744 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-09-12 18:20:32,931 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,18 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:20:32,932 INFO L399 AbstractCegarLoop]: === Iteration 32 === Targeting student_versionErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [correct_versionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, correct_versionErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, correct_versionErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-09-12 18:20:32,932 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:20:32,932 INFO L85 PathProgramCache]: Analyzing trace with hash -473871256, now seen corresponding path program 1 times [2024-09-12 18:20:32,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:20:32,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165879635] [2024-09-12 18:20:32,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:20:32,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:20:32,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:20:32,968 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:20:32,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:20:32,970 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-12 18:20:32,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:20:32,976 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 18:20:32,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:20:32,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165879635] [2024-09-12 18:20:32,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165879635] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 18:20:32,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 18:20:32,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-09-12 18:20:32,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575937658] [2024-09-12 18:20:32,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 18:20:32,977 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-12 18:20:32,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:20:32,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-12 18:20:32,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-12 18:20:32,977 INFO L87 Difference]: Start difference. First operand 276 states and 325 transitions. Second operand has 5 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-12 18:20:33,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:20:33,074 INFO L93 Difference]: Finished difference Result 283 states and 337 transitions. [2024-09-12 18:20:33,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-12 18:20:33,075 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 40 [2024-09-12 18:20:33,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:20:33,076 INFO L225 Difference]: With dead ends: 283 [2024-09-12 18:20:33,076 INFO L226 Difference]: Without dead ends: 282 [2024-09-12 18:20:33,077 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 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 18:20:33,077 INFO L434 NwaCegarLoop]: 60 mSDtfsCounter, 42 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 205 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 18:20:33,077 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 205 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 18:20:33,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2024-09-12 18:20:33,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 280. [2024-09-12 18:20:33,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 252 states have (on average 1.2698412698412698) internal successors, (320), 269 states have internal predecessors, (320), 6 states have call successors, (6), 6 states have call predecessors, (6), 5 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2024-09-12 18:20:33,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 331 transitions. [2024-09-12 18:20:33,133 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 331 transitions. Word has length 40 [2024-09-12 18:20:33,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:20:33,133 INFO L474 AbstractCegarLoop]: Abstraction has 280 states and 331 transitions. [2024-09-12 18:20:33,133 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-12 18:20:33,133 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:20:33,133 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 331 transitions. [2024-09-12 18:20:33,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-09-12 18:20:33,133 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:20:33,134 INFO L216 NwaCegarLoop]: trace histogram [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] [2024-09-12 18:20:33,134 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-09-12 18:20:33,134 INFO L399 AbstractCegarLoop]: === Iteration 33 === Targeting correct_versionErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [correct_versionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, correct_versionErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, correct_versionErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-09-12 18:20:33,134 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:20:33,134 INFO L85 PathProgramCache]: Analyzing trace with hash -32171103, now seen corresponding path program 2 times [2024-09-12 18:20:33,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:20:33,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117957820] [2024-09-12 18:20:33,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:20:33,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:20:33,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:20:33,181 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:20:33,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:20:33,183 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-09-12 18:20:33,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:20:33,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117957820] [2024-09-12 18:20:33,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117957820] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:20:33,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1087273775] [2024-09-12 18:20:33,183 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 18:20:33,183 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:20:33,183 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:20:33,185 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 18:20:33,187 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 18:20:33,220 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 18:20:33,221 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 18:20:33,221 INFO L262 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-09-12 18:20:33,222 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:20:33,278 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-09-12 18:20:33,278 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:20:33,340 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-09-12 18:20:33,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1087273775] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:20:33,340 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:20:33,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2024-09-12 18:20:33,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129674719] [2024-09-12 18:20:33,341 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:20:33,341 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-09-12 18:20:33,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:20:33,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-09-12 18:20:33,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2024-09-12 18:20:33,342 INFO L87 Difference]: Start difference. First operand 280 states and 331 transitions. Second operand has 15 states, 14 states have (on average 5.571428571428571) internal successors, (78), 15 states have internal predecessors, (78), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:20:33,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:20:33,669 INFO L93 Difference]: Finished difference Result 470 states and 558 transitions. [2024-09-12 18:20:33,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-09-12 18:20:33,670 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 5.571428571428571) internal successors, (78), 15 states have internal predecessors, (78), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 39 [2024-09-12 18:20:33,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:20:33,672 INFO L225 Difference]: With dead ends: 470 [2024-09-12 18:20:33,672 INFO L226 Difference]: Without dead ends: 469 [2024-09-12 18:20:33,672 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 195 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=260, Invalid=496, Unknown=0, NotChecked=0, Total=756 [2024-09-12 18:20:33,673 INFO L434 NwaCegarLoop]: 67 mSDtfsCounter, 210 mSDsluCounter, 430 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 497 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 18:20:33,673 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [210 Valid, 497 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 18:20:33,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 469 states. [2024-09-12 18:20:33,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 469 to 318. [2024-09-12 18:20:33,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 318 states, 290 states have (on average 1.2551724137931035) internal successors, (364), 307 states have internal predecessors, (364), 6 states have call successors, (6), 6 states have call predecessors, (6), 5 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2024-09-12 18:20:33,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 375 transitions. [2024-09-12 18:20:33,750 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 375 transitions. Word has length 39 [2024-09-12 18:20:33,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:20:33,750 INFO L474 AbstractCegarLoop]: Abstraction has 318 states and 375 transitions. [2024-09-12 18:20:33,751 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 5.571428571428571) internal successors, (78), 15 states have internal predecessors, (78), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:20:33,751 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:20:33,751 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 375 transitions. [2024-09-12 18:20:33,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-09-12 18:20:33,751 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:20:33,751 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:20:33,764 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 18:20:33,952 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2024-09-12 18:20:33,952 INFO L399 AbstractCegarLoop]: === Iteration 34 === Targeting student_versionErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [correct_versionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, correct_versionErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, correct_versionErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-09-12 18:20:33,953 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:20:33,953 INFO L85 PathProgramCache]: Analyzing trace with hash -1805106923, now seen corresponding path program 1 times [2024-09-12 18:20:33,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:20:33,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678655787] [2024-09-12 18:20:33,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:20:33,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:20:33,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:20:33,982 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:20:33,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:20:33,983 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-12 18:20:33,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:20:33,988 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 18:20:33,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:20:33,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678655787] [2024-09-12 18:20:33,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678655787] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 18:20:33,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 18:20:33,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-09-12 18:20:33,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591563709] [2024-09-12 18:20:33,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 18:20:33,990 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-12 18:20:33,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:20:33,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-12 18:20:33,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-12 18:20:33,991 INFO L87 Difference]: Start difference. First operand 318 states and 375 transitions. Second operand has 5 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-12 18:20:34,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:20:34,103 INFO L93 Difference]: Finished difference Result 321 states and 379 transitions. [2024-09-12 18:20:34,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-12 18:20:34,104 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 41 [2024-09-12 18:20:34,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:20:34,105 INFO L225 Difference]: With dead ends: 321 [2024-09-12 18:20:34,105 INFO L226 Difference]: Without dead ends: 320 [2024-09-12 18:20:34,105 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 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 18:20:34,106 INFO L434 NwaCegarLoop]: 61 mSDtfsCounter, 40 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 207 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 18:20:34,106 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 207 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 18:20:34,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2024-09-12 18:20:34,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 320. [2024-09-12 18:20:34,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 292 states have (on average 1.2534246575342465) internal successors, (366), 309 states have internal predecessors, (366), 6 states have call successors, (6), 6 states have call predecessors, (6), 5 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2024-09-12 18:20:34,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 377 transitions. [2024-09-12 18:20:34,175 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 377 transitions. Word has length 41 [2024-09-12 18:20:34,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:20:34,175 INFO L474 AbstractCegarLoop]: Abstraction has 320 states and 377 transitions. [2024-09-12 18:20:34,176 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-12 18:20:34,176 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:20:34,176 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 377 transitions. [2024-09-12 18:20:34,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-09-12 18:20:34,176 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:20:34,176 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:20:34,177 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-09-12 18:20:34,177 INFO L399 AbstractCegarLoop]: === Iteration 35 === Targeting student_versionErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [correct_versionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, correct_versionErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, correct_versionErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-09-12 18:20:34,177 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:20:34,177 INFO L85 PathProgramCache]: Analyzing trace with hash -123789066, now seen corresponding path program 1 times [2024-09-12 18:20:34,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:20:34,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072468939] [2024-09-12 18:20:34,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:20:34,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:20:34,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:20:34,200 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:20:34,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:20:34,202 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-12 18:20:34,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:20:34,204 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 18:20:34,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:20:34,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072468939] [2024-09-12 18:20:34,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072468939] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 18:20:34,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 18:20:34,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-12 18:20:34,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303141153] [2024-09-12 18:20:34,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 18:20:34,205 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-09-12 18:20:34,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:20:34,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-09-12 18:20:34,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-09-12 18:20:34,206 INFO L87 Difference]: Start difference. First operand 320 states and 377 transitions. Second operand has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 1 states have call successors, (4), 1 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 18:20:34,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:20:34,308 INFO L93 Difference]: Finished difference Result 346 states and 411 transitions. [2024-09-12 18:20:34,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-12 18:20:34,309 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 1 states have call successors, (4), 1 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 42 [2024-09-12 18:20:34,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:20:34,310 INFO L225 Difference]: With dead ends: 346 [2024-09-12 18:20:34,310 INFO L226 Difference]: Without dead ends: 342 [2024-09-12 18:20:34,310 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 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 18:20:34,311 INFO L434 NwaCegarLoop]: 67 mSDtfsCounter, 15 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 180 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 18:20:34,311 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 180 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 18:20:34,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2024-09-12 18:20:34,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 336. [2024-09-12 18:20:34,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 336 states, 308 states have (on average 1.2597402597402598) internal successors, (388), 325 states have internal predecessors, (388), 6 states have call successors, (6), 6 states have call predecessors, (6), 5 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2024-09-12 18:20:34,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 399 transitions. [2024-09-12 18:20:34,380 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 399 transitions. Word has length 42 [2024-09-12 18:20:34,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:20:34,380 INFO L474 AbstractCegarLoop]: Abstraction has 336 states and 399 transitions. [2024-09-12 18:20:34,381 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 1 states have call successors, (4), 1 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 18:20:34,381 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:20:34,381 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 399 transitions. [2024-09-12 18:20:34,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-09-12 18:20:34,381 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:20:34,381 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:20:34,381 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-09-12 18:20:34,381 INFO L399 AbstractCegarLoop]: === Iteration 36 === Targeting student_versionErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [correct_versionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, correct_versionErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, correct_versionErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-09-12 18:20:34,382 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:20:34,382 INFO L85 PathProgramCache]: Analyzing trace with hash 1297796536, now seen corresponding path program 1 times [2024-09-12 18:20:34,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:20:34,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632238271] [2024-09-12 18:20:34,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:20:34,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:20:34,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:20:34,402 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:20:34,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:20:34,404 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-12 18:20:34,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:20:34,406 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 18:20:34,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:20:34,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632238271] [2024-09-12 18:20:34,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632238271] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 18:20:34,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 18:20:34,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-12 18:20:34,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252174938] [2024-09-12 18:20:34,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 18:20:34,407 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-12 18:20:34,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:20:34,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-12 18:20:34,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-12 18:20:34,408 INFO L87 Difference]: Start difference. First operand 336 states and 399 transitions. Second operand has 3 states, 2 states have (on average 19.0) internal successors, (38), 3 states have internal predecessors, (38), 1 states have call successors, (4), 1 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 18:20:34,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:20:34,530 INFO L93 Difference]: Finished difference Result 360 states and 435 transitions. [2024-09-12 18:20:34,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-12 18:20:34,531 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 19.0) internal successors, (38), 3 states have internal predecessors, (38), 1 states have call successors, (4), 1 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 44 [2024-09-12 18:20:34,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:20:34,533 INFO L225 Difference]: With dead ends: 360 [2024-09-12 18:20:34,533 INFO L226 Difference]: Without dead ends: 358 [2024-09-12 18:20:34,534 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-12 18:20:34,534 INFO L434 NwaCegarLoop]: 67 mSDtfsCounter, 3 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 18:20:34,534 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 131 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 18:20:34,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2024-09-12 18:20:34,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 356. [2024-09-12 18:20:34,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 356 states, 328 states have (on average 1.2682926829268293) internal successors, (416), 345 states have internal predecessors, (416), 6 states have call successors, (6), 6 states have call predecessors, (6), 5 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2024-09-12 18:20:34,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 427 transitions. [2024-09-12 18:20:34,621 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 427 transitions. Word has length 44 [2024-09-12 18:20:34,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:20:34,621 INFO L474 AbstractCegarLoop]: Abstraction has 356 states and 427 transitions. [2024-09-12 18:20:34,621 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 19.0) internal successors, (38), 3 states have internal predecessors, (38), 1 states have call successors, (4), 1 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 18:20:34,621 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:20:34,622 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 427 transitions. [2024-09-12 18:20:34,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-09-12 18:20:34,622 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:20:34,622 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, 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 18:20:34,623 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-09-12 18:20:34,623 INFO L399 AbstractCegarLoop]: === Iteration 37 === Targeting student_versionErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [correct_versionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, correct_versionErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, correct_versionErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-09-12 18:20:34,623 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:20:34,623 INFO L85 PathProgramCache]: Analyzing trace with hash -1245487847, now seen corresponding path program 1 times [2024-09-12 18:20:34,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:20:34,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330984703] [2024-09-12 18:20:34,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:20:34,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:20:34,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:20:34,695 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:20:34,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:20:34,697 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-12 18:20:34,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:20:34,702 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-09-12 18:20:34,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:20:34,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330984703] [2024-09-12 18:20:34,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330984703] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:20:34,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [850410237] [2024-09-12 18:20:34,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:20:34,704 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:20:34,704 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:20:34,706 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 18:20:34,708 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 18:20:34,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:20:34,748 INFO L262 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-09-12 18:20:34,749 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:20:34,895 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-09-12 18:20:34,896 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:20:35,074 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-09-12 18:20:35,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [850410237] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:20:35,075 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:20:35,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 9] total 18 [2024-09-12 18:20:35,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297696150] [2024-09-12 18:20:35,076 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:20:35,076 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-09-12 18:20:35,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:20:35,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-09-12 18:20:35,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2024-09-12 18:20:35,077 INFO L87 Difference]: Start difference. First operand 356 states and 427 transitions. Second operand has 18 states, 18 states have (on average 5.5) internal successors, (99), 16 states have internal predecessors, (99), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-12 18:20:35,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:20:35,472 INFO L93 Difference]: Finished difference Result 537 states and 663 transitions. [2024-09-12 18:20:35,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-09-12 18:20:35,473 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.5) internal successors, (99), 16 states have internal predecessors, (99), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 45 [2024-09-12 18:20:35,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:20:35,475 INFO L225 Difference]: With dead ends: 537 [2024-09-12 18:20:35,475 INFO L226 Difference]: Without dead ends: 487 [2024-09-12 18:20:35,476 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 81 SyntacticMatches, 3 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=122, Invalid=808, Unknown=0, NotChecked=0, Total=930 [2024-09-12 18:20:35,476 INFO L434 NwaCegarLoop]: 52 mSDtfsCounter, 171 mSDsluCounter, 656 mSDsCounter, 0 mSdLazyCounter, 445 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 708 SdHoareTripleChecker+Invalid, 450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 445 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 18:20:35,476 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [172 Valid, 708 Invalid, 450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 445 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 18:20:35,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 487 states. [2024-09-12 18:20:35,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 487 to 465. [2024-09-12 18:20:35,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 465 states, 431 states have (on average 1.2923433874709978) internal successors, (557), 450 states have internal predecessors, (557), 8 states have call successors, (8), 8 states have call predecessors, (8), 9 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) [2024-09-12 18:20:35,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 465 states to 465 states and 574 transitions. [2024-09-12 18:20:35,579 INFO L78 Accepts]: Start accepts. Automaton has 465 states and 574 transitions. Word has length 45 [2024-09-12 18:20:35,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:20:35,579 INFO L474 AbstractCegarLoop]: Abstraction has 465 states and 574 transitions. [2024-09-12 18:20:35,579 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.5) internal successors, (99), 16 states have internal predecessors, (99), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-12 18:20:35,580 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:20:35,580 INFO L276 IsEmpty]: Start isEmpty. Operand 465 states and 574 transitions. [2024-09-12 18:20:35,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-09-12 18:20:35,580 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:20:35,580 INFO L216 NwaCegarLoop]: trace histogram [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 18:20:35,593 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-09-12 18:20:35,781 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2024-09-12 18:20:35,781 INFO L399 AbstractCegarLoop]: === Iteration 38 === Targeting student_versionErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [correct_versionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, correct_versionErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, correct_versionErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-09-12 18:20:35,782 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:20:35,782 INFO L85 PathProgramCache]: Analyzing trace with hash 311417685, now seen corresponding path program 1 times [2024-09-12 18:20:35,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:20:35,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298984672] [2024-09-12 18:20:35,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:20:35,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:20:35,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:20:35,805 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:20:35,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:20:35,807 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-12 18:20:35,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:20:35,838 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-12 18:20:35,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:20:35,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298984672] [2024-09-12 18:20:35,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298984672] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:20:35,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1032415147] [2024-09-12 18:20:35,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:20:35,839 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:20:35,839 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:20:35,840 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 18:20:35,842 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 18:20:35,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:20:35,882 INFO L262 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-09-12 18:20:35,884 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:20:35,930 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-12 18:20:35,930 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:20:35,975 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-12 18:20:35,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1032415147] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:20:35,975 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:20:35,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 9 [2024-09-12 18:20:35,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901379837] [2024-09-12 18:20:35,976 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:20:35,976 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-09-12 18:20:35,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:20:35,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-09-12 18:20:35,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2024-09-12 18:20:35,977 INFO L87 Difference]: Start difference. First operand 465 states and 574 transitions. Second operand has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-12 18:20:36,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:20:36,117 INFO L93 Difference]: Finished difference Result 590 states and 729 transitions. [2024-09-12 18:20:36,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-09-12 18:20:36,117 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 45 [2024-09-12 18:20:36,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:20:36,119 INFO L225 Difference]: With dead ends: 590 [2024-09-12 18:20:36,119 INFO L226 Difference]: Without dead ends: 467 [2024-09-12 18:20:36,120 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 88 SyntacticMatches, 5 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2024-09-12 18:20:36,120 INFO L434 NwaCegarLoop]: 81 mSDtfsCounter, 61 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 18:20:36,120 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 232 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 18:20:36,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 467 states. [2024-09-12 18:20:36,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 467 to 465. [2024-09-12 18:20:36,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 465 states, 431 states have (on average 1.283062645011601) internal successors, (553), 450 states have internal predecessors, (553), 8 states have call successors, (8), 8 states have call predecessors, (8), 9 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) [2024-09-12 18:20:36,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 465 states to 465 states and 570 transitions. [2024-09-12 18:20:36,210 INFO L78 Accepts]: Start accepts. Automaton has 465 states and 570 transitions. Word has length 45 [2024-09-12 18:20:36,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:20:36,211 INFO L474 AbstractCegarLoop]: Abstraction has 465 states and 570 transitions. [2024-09-12 18:20:36,211 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-12 18:20:36,211 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:20:36,211 INFO L276 IsEmpty]: Start isEmpty. Operand 465 states and 570 transitions. [2024-09-12 18:20:36,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-09-12 18:20:36,212 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:20:36,212 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:20:36,227 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2024-09-12 18:20:36,412 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2024-09-12 18:20:36,412 INFO L399 AbstractCegarLoop]: === Iteration 39 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [correct_versionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, correct_versionErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, correct_versionErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-09-12 18:20:36,413 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:20:36,413 INFO L85 PathProgramCache]: Analyzing trace with hash -656568604, now seen corresponding path program 1 times [2024-09-12 18:20:36,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:20:36,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737249912] [2024-09-12 18:20:36,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:20:36,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:20:36,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:20:36,440 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:20:36,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:20:36,442 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-12 18:20:36,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:20:36,449 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-09-12 18:20:36,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:20:36,470 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-09-12 18:20:36,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:20:36,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737249912] [2024-09-12 18:20:36,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737249912] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 18:20:36,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 18:20:36,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-09-12 18:20:36,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75730428] [2024-09-12 18:20:36,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 18:20:36,471 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-12 18:20:36,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:20:36,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-12 18:20:36,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-09-12 18:20:36,472 INFO L87 Difference]: Start difference. First operand 465 states and 570 transitions. Second operand has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-12 18:20:36,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:20:36,608 INFO L93 Difference]: Finished difference Result 479 states and 583 transitions. [2024-09-12 18:20:36,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-12 18:20:36,609 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 48 [2024-09-12 18:20:36,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:20:36,611 INFO L225 Difference]: With dead ends: 479 [2024-09-12 18:20:36,611 INFO L226 Difference]: Without dead ends: 464 [2024-09-12 18:20:36,612 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-09-12 18:20:36,612 INFO L434 NwaCegarLoop]: 64 mSDtfsCounter, 55 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 18:20:36,612 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 222 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 18:20:36,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 464 states. [2024-09-12 18:20:36,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 464 to 464. [2024-09-12 18:20:36,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 464 states, 431 states have (on average 1.259860788863109) internal successors, (543), 449 states have internal predecessors, (543), 8 states have call successors, (8), 8 states have call predecessors, (8), 9 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) [2024-09-12 18:20:36,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 464 states to 464 states and 560 transitions. [2024-09-12 18:20:36,706 INFO L78 Accepts]: Start accepts. Automaton has 464 states and 560 transitions. Word has length 48 [2024-09-12 18:20:36,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:20:36,706 INFO L474 AbstractCegarLoop]: Abstraction has 464 states and 560 transitions. [2024-09-12 18:20:36,706 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-12 18:20:36,707 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:20:36,707 INFO L276 IsEmpty]: Start isEmpty. Operand 464 states and 560 transitions. [2024-09-12 18:20:36,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-09-12 18:20:36,707 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:20:36,707 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:20:36,707 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-09-12 18:20:36,708 INFO L399 AbstractCegarLoop]: === Iteration 40 === Targeting student_versionErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [correct_versionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, correct_versionErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, correct_versionErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-09-12 18:20:36,708 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:20:36,708 INFO L85 PathProgramCache]: Analyzing trace with hash 1382009191, now seen corresponding path program 1 times [2024-09-12 18:20:36,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:20:36,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798138869] [2024-09-12 18:20:36,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:20:36,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:20:36,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:20:36,751 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:20:36,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:20:36,753 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-12 18:20:36,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:20:36,756 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-12 18:20:36,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:20:36,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798138869] [2024-09-12 18:20:36,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798138869] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:20:36,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [913632112] [2024-09-12 18:20:36,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:20:36,757 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:20:36,757 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:20:36,758 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 18:20:36,760 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 18:20:36,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:20:36,803 INFO L262 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-09-12 18:20:36,804 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:20:36,828 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-12 18:20:36,829 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-12 18:20:36,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [913632112] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 18:20:36,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-12 18:20:36,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-09-12 18:20:36,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965227293] [2024-09-12 18:20:36,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 18:20:36,830 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-12 18:20:36,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:20:36,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-12 18:20:36,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-09-12 18:20:36,830 INFO L87 Difference]: Start difference. First operand 464 states and 560 transitions. Second operand has 5 states, 4 states have (on average 10.25) internal successors, (41), 5 states have internal predecessors, (41), 1 states have call successors, (4), 1 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 18:20:36,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:20:36,950 INFO L93 Difference]: Finished difference Result 474 states and 568 transitions. [2024-09-12 18:20:36,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-12 18:20:36,952 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 10.25) internal successors, (41), 5 states have internal predecessors, (41), 1 states have call successors, (4), 1 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 47 [2024-09-12 18:20:36,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:20:36,954 INFO L225 Difference]: With dead ends: 474 [2024-09-12 18:20:36,954 INFO L226 Difference]: Without dead ends: 472 [2024-09-12 18:20:36,954 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-09-12 18:20:36,955 INFO L434 NwaCegarLoop]: 74 mSDtfsCounter, 27 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 239 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 18:20:36,955 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 239 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 18:20:36,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472 states. [2024-09-12 18:20:37,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472 to 462. [2024-09-12 18:20:37,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 462 states, 431 states have (on average 1.2366589327146171) internal successors, (533), 447 states have internal predecessors, (533), 8 states have call successors, (8), 8 states have call predecessors, (8), 9 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) [2024-09-12 18:20:37,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 462 states to 462 states and 550 transitions. [2024-09-12 18:20:37,083 INFO L78 Accepts]: Start accepts. Automaton has 462 states and 550 transitions. Word has length 47 [2024-09-12 18:20:37,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:20:37,083 INFO L474 AbstractCegarLoop]: Abstraction has 462 states and 550 transitions. [2024-09-12 18:20:37,083 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 10.25) internal successors, (41), 5 states have internal predecessors, (41), 1 states have call successors, (4), 1 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 18:20:37,083 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:20:37,083 INFO L276 IsEmpty]: Start isEmpty. Operand 462 states and 550 transitions. [2024-09-12 18:20:37,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-09-12 18:20:37,084 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:20:37,084 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:20:37,096 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-09-12 18:20:37,284 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2024-09-12 18:20:37,285 INFO L399 AbstractCegarLoop]: === Iteration 41 === Targeting student_versionErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [correct_versionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, correct_versionErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, correct_versionErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-09-12 18:20:37,285 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:20:37,285 INFO L85 PathProgramCache]: Analyzing trace with hash -107387893, now seen corresponding path program 1 times [2024-09-12 18:20:37,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:20:37,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938081501] [2024-09-12 18:20:37,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:20:37,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:20:37,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:20:37,323 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:20:37,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:20:37,325 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-12 18:20:37,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:20:37,330 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-12 18:20:37,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:20:37,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938081501] [2024-09-12 18:20:37,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938081501] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:20:37,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2061387065] [2024-09-12 18:20:37,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:20:37,331 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:20:37,331 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:20:37,332 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 18:20:37,334 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 18:20:37,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:20:37,373 INFO L262 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-09-12 18:20:37,374 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:20:37,403 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-12 18:20:37,403 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:20:37,433 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-12 18:20:37,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2061387065] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:20:37,434 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:20:37,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-09-12 18:20:37,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128718225] [2024-09-12 18:20:37,434 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:20:37,434 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-09-12 18:20:37,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:20:37,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-09-12 18:20:37,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2024-09-12 18:20:37,435 INFO L87 Difference]: Start difference. First operand 462 states and 550 transitions. Second operand has 10 states, 9 states have (on average 8.333333333333334) internal successors, (75), 10 states have internal predecessors, (75), 1 states have call successors, (4), 1 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 18:20:37,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:20:37,585 INFO L93 Difference]: Finished difference Result 568 states and 686 transitions. [2024-09-12 18:20:37,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-09-12 18:20:37,586 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 8.333333333333334) internal successors, (75), 10 states have internal predecessors, (75), 1 states have call successors, (4), 1 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 48 [2024-09-12 18:20:37,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:20:37,588 INFO L225 Difference]: With dead ends: 568 [2024-09-12 18:20:37,588 INFO L226 Difference]: Without dead ends: 566 [2024-09-12 18:20:37,589 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=73, Invalid=109, Unknown=0, NotChecked=0, Total=182 [2024-09-12 18:20:37,589 INFO L434 NwaCegarLoop]: 63 mSDtfsCounter, 136 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 263 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 18:20:37,589 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 263 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 18:20:37,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 566 states. [2024-09-12 18:20:37,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 566 to 504. [2024-09-12 18:20:37,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 504 states, 473 states have (on average 1.236786469344609) internal successors, (585), 489 states have internal predecessors, (585), 8 states have call successors, (8), 8 states have call predecessors, (8), 9 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) [2024-09-12 18:20:37,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 504 states to 504 states and 602 transitions. [2024-09-12 18:20:37,692 INFO L78 Accepts]: Start accepts. Automaton has 504 states and 602 transitions. Word has length 48 [2024-09-12 18:20:37,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:20:37,692 INFO L474 AbstractCegarLoop]: Abstraction has 504 states and 602 transitions. [2024-09-12 18:20:37,692 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 8.333333333333334) internal successors, (75), 10 states have internal predecessors, (75), 1 states have call successors, (4), 1 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 18:20:37,692 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:20:37,692 INFO L276 IsEmpty]: Start isEmpty. Operand 504 states and 602 transitions. [2024-09-12 18:20:37,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-09-12 18:20:37,693 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:20:37,693 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, 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 18:20:37,705 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2024-09-12 18:20:37,893 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2024-09-12 18:20:37,893 INFO L399 AbstractCegarLoop]: === Iteration 42 === Targeting student_versionErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [correct_versionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, correct_versionErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, correct_versionErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-09-12 18:20:37,894 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:20:37,894 INFO L85 PathProgramCache]: Analyzing trace with hash 249398882, now seen corresponding path program 1 times [2024-09-12 18:20:37,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:20:37,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702139667] [2024-09-12 18:20:37,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:20:37,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:20:37,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:20:37,914 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:20:37,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:20:37,916 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-12 18:20:37,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:20:37,918 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-12 18:20:37,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:20:37,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702139667] [2024-09-12 18:20:37,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702139667] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:20:37,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [518952723] [2024-09-12 18:20:37,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:20:37,919 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:20:37,919 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:20:37,921 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 18:20:37,921 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 18:20:37,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:20:37,958 INFO L262 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-09-12 18:20:37,959 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:20:37,989 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-09-12 18:20:37,990 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-12 18:20:37,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [518952723] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 18:20:37,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-12 18:20:37,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [3] total 7 [2024-09-12 18:20:37,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439710985] [2024-09-12 18:20:37,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 18:20:37,990 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-12 18:20:37,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:20:37,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-12 18:20:37,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-09-12 18:20:37,991 INFO L87 Difference]: Start difference. First operand 504 states and 602 transitions. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-12 18:20:38,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:20:38,109 INFO L93 Difference]: Finished difference Result 520 states and 615 transitions. [2024-09-12 18:20:38,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-12 18:20:38,109 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 49 [2024-09-12 18:20:38,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:20:38,111 INFO L225 Difference]: With dead ends: 520 [2024-09-12 18:20:38,111 INFO L226 Difference]: Without dead ends: 460 [2024-09-12 18:20:38,112 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-09-12 18:20:38,112 INFO L434 NwaCegarLoop]: 63 mSDtfsCounter, 39 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 18:20:38,112 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 209 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 18:20:38,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2024-09-12 18:20:38,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 460. [2024-09-12 18:20:38,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 460 states, 429 states have (on average 1.2214452214452214) internal successors, (524), 445 states have internal predecessors, (524), 8 states have call successors, (8), 8 states have call predecessors, (8), 9 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) [2024-09-12 18:20:38,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460 states to 460 states and 541 transitions. [2024-09-12 18:20:38,210 INFO L78 Accepts]: Start accepts. Automaton has 460 states and 541 transitions. Word has length 49 [2024-09-12 18:20:38,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:20:38,210 INFO L474 AbstractCegarLoop]: Abstraction has 460 states and 541 transitions. [2024-09-12 18:20:38,210 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-12 18:20:38,210 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:20:38,210 INFO L276 IsEmpty]: Start isEmpty. Operand 460 states and 541 transitions. [2024-09-12 18:20:38,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-09-12 18:20:38,211 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:20:38,211 INFO L216 NwaCegarLoop]: trace histogram [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] [2024-09-12 18:20:38,224 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 18:20:38,411 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2024-09-12 18:20:38,411 INFO L399 AbstractCegarLoop]: === Iteration 43 === Targeting student_versionErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [correct_versionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, correct_versionErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, correct_versionErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-09-12 18:20:38,412 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:20:38,412 INFO L85 PathProgramCache]: Analyzing trace with hash -803878672, now seen corresponding path program 2 times [2024-09-12 18:20:38,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:20:38,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743064149] [2024-09-12 18:20:38,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:20:38,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:20:38,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:20:38,446 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:20:38,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:20:38,448 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-12 18:20:38,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:20:38,453 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-09-12 18:20:38,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:20:38,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743064149] [2024-09-12 18:20:38,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743064149] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:20:38,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [738681814] [2024-09-12 18:20:38,454 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 18:20:38,454 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:20:38,454 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:20:38,456 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 18:20:38,456 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 18:20:38,490 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-09-12 18:20:38,490 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 18:20:38,491 INFO L262 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-09-12 18:20:38,492 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:20:38,542 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-09-12 18:20:38,542 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:20:38,586 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-09-12 18:20:38,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [738681814] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:20:38,586 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:20:38,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 13 [2024-09-12 18:20:38,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240319357] [2024-09-12 18:20:38,587 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:20:38,587 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-09-12 18:20:38,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:20:38,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-09-12 18:20:38,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2024-09-12 18:20:38,588 INFO L87 Difference]: Start difference. First operand 460 states and 541 transitions. Second operand has 14 states, 13 states have (on average 4.3076923076923075) internal successors, (56), 11 states have internal predecessors, (56), 4 states have call successors, (8), 4 states have call predecessors, (8), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-09-12 18:20:38,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:20:38,750 INFO L93 Difference]: Finished difference Result 460 states and 541 transitions. [2024-09-12 18:20:38,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-09-12 18:20:38,753 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 4.3076923076923075) internal successors, (56), 11 states have internal predecessors, (56), 4 states have call successors, (8), 4 states have call predecessors, (8), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 50 [2024-09-12 18:20:38,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:20:38,755 INFO L225 Difference]: With dead ends: 460 [2024-09-12 18:20:38,755 INFO L226 Difference]: Without dead ends: 459 [2024-09-12 18:20:38,757 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2024-09-12 18:20:38,759 INFO L434 NwaCegarLoop]: 60 mSDtfsCounter, 44 mSDsluCounter, 387 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 447 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 18:20:38,759 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 447 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 18:20:38,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459 states. [2024-09-12 18:20:38,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459 to 459. [2024-09-12 18:20:38,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 459 states, 429 states have (on average 1.2167832167832169) internal successors, (522), 444 states have internal predecessors, (522), 8 states have call successors, (8), 8 states have call predecessors, (8), 9 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) [2024-09-12 18:20:38,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 459 states to 459 states and 539 transitions. [2024-09-12 18:20:38,858 INFO L78 Accepts]: Start accepts. Automaton has 459 states and 539 transitions. Word has length 50 [2024-09-12 18:20:38,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:20:38,859 INFO L474 AbstractCegarLoop]: Abstraction has 459 states and 539 transitions. [2024-09-12 18:20:38,860 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 4.3076923076923075) internal successors, (56), 11 states have internal predecessors, (56), 4 states have call successors, (8), 4 states have call predecessors, (8), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-09-12 18:20:38,860 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:20:38,860 INFO L276 IsEmpty]: Start isEmpty. Operand 459 states and 539 transitions. [2024-09-12 18:20:38,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-09-12 18:20:38,861 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:20:38,861 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:20:38,874 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 18:20:39,061 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2024-09-12 18:20:39,062 INFO L399 AbstractCegarLoop]: === Iteration 44 === Targeting correct_versionErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [correct_versionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, correct_versionErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, correct_versionErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-09-12 18:20:39,062 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:20:39,062 INFO L85 PathProgramCache]: Analyzing trace with hash -44736486, now seen corresponding path program 3 times [2024-09-12 18:20:39,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:20:39,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665945579] [2024-09-12 18:20:39,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:20:39,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:20:39,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:20:39,124 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:20:39,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:20:39,126 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-09-12 18:20:39,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:20:39,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665945579] [2024-09-12 18:20:39,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665945579] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:20:39,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2065235680] [2024-09-12 18:20:39,127 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-12 18:20:39,127 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:20:39,127 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:20:39,128 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 18:20:39,129 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 18:20:39,164 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-09-12 18:20:39,165 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 18:20:39,166 INFO L262 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-09-12 18:20:39,167 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:20:39,249 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 11 proven. 7 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-09-12 18:20:39,249 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:20:39,309 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 11 proven. 7 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-09-12 18:20:39,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2065235680] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:20:39,309 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:20:39,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 18 [2024-09-12 18:20:39,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104122989] [2024-09-12 18:20:39,310 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:20:39,310 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-09-12 18:20:39,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:20:39,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-09-12 18:20:39,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=246, Unknown=0, NotChecked=0, Total=306 [2024-09-12 18:20:39,311 INFO L87 Difference]: Start difference. First operand 459 states and 539 transitions. Second operand has 18 states, 18 states have (on average 4.666666666666667) internal successors, (84), 18 states have internal predecessors, (84), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:20:39,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:20:39,934 INFO L93 Difference]: Finished difference Result 784 states and 912 transitions. [2024-09-12 18:20:39,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2024-09-12 18:20:39,934 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.666666666666667) internal successors, (84), 18 states have internal predecessors, (84), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 49 [2024-09-12 18:20:39,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:20:39,937 INFO L225 Difference]: With dead ends: 784 [2024-09-12 18:20:39,937 INFO L226 Difference]: Without dead ends: 625 [2024-09-12 18:20:39,938 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 88 SyntacticMatches, 3 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1135 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=765, Invalid=2895, Unknown=0, NotChecked=0, Total=3660 [2024-09-12 18:20:39,938 INFO L434 NwaCegarLoop]: 57 mSDtfsCounter, 265 mSDsluCounter, 509 mSDsCounter, 0 mSdLazyCounter, 268 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 265 SdHoareTripleChecker+Valid, 566 SdHoareTripleChecker+Invalid, 272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 18:20:39,939 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [265 Valid, 566 Invalid, 272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 268 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 18:20:39,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 625 states. [2024-09-12 18:20:40,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 625 to 551. [2024-09-12 18:20:40,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 551 states, 521 states have (on average 1.199616122840691) internal successors, (625), 536 states have internal predecessors, (625), 8 states have call successors, (8), 8 states have call predecessors, (8), 9 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) [2024-09-12 18:20:40,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 551 states to 551 states and 642 transitions. [2024-09-12 18:20:40,120 INFO L78 Accepts]: Start accepts. Automaton has 551 states and 642 transitions. Word has length 49 [2024-09-12 18:20:40,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:20:40,120 INFO L474 AbstractCegarLoop]: Abstraction has 551 states and 642 transitions. [2024-09-12 18:20:40,120 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.666666666666667) internal successors, (84), 18 states have internal predecessors, (84), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:20:40,120 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:20:40,121 INFO L276 IsEmpty]: Start isEmpty. Operand 551 states and 642 transitions. [2024-09-12 18:20:40,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-09-12 18:20:40,121 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:20:40,121 INFO L216 NwaCegarLoop]: trace histogram [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 18:20:40,133 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2024-09-12 18:20:40,322 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2024-09-12 18:20:40,322 INFO L399 AbstractCegarLoop]: === Iteration 45 === Targeting student_versionErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [correct_versionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, correct_versionErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, correct_versionErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-09-12 18:20:40,322 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:20:40,323 INFO L85 PathProgramCache]: Analyzing trace with hash -1236149650, now seen corresponding path program 1 times [2024-09-12 18:20:40,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:20:40,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560854910] [2024-09-12 18:20:40,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:20:40,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:20:40,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:20:40,372 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:20:40,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:20:40,374 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-12 18:20:40,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:20:40,379 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-09-12 18:20:40,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:20:40,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560854910] [2024-09-12 18:20:40,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560854910] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:20:40,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [653855162] [2024-09-12 18:20:40,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:20:40,380 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:20:40,380 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:20:40,382 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 18:20:40,383 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 18:20:40,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:20:40,421 INFO L262 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-09-12 18:20:40,422 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:20:40,560 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-09-12 18:20:40,561 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:20:40,780 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-09-12 18:20:40,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [653855162] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:20:40,780 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:20:40,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 9] total 21 [2024-09-12 18:20:40,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257379121] [2024-09-12 18:20:40,781 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:20:40,781 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-09-12 18:20:40,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:20:40,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-09-12 18:20:40,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=397, Unknown=0, NotChecked=0, Total=462 [2024-09-12 18:20:40,782 INFO L87 Difference]: Start difference. First operand 551 states and 642 transitions. Second operand has 22 states, 19 states have (on average 6.631578947368421) internal successors, (126), 19 states have internal predecessors, (126), 6 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-09-12 18:20:41,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:20:41,157 INFO L93 Difference]: Finished difference Result 567 states and 656 transitions. [2024-09-12 18:20:41,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-09-12 18:20:41,157 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 19 states have (on average 6.631578947368421) internal successors, (126), 19 states have internal predecessors, (126), 6 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 51 [2024-09-12 18:20:41,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:20:41,159 INFO L225 Difference]: With dead ends: 567 [2024-09-12 18:20:41,159 INFO L226 Difference]: Without dead ends: 566 [2024-09-12 18:20:41,160 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=155, Invalid=901, Unknown=0, NotChecked=0, Total=1056 [2024-09-12 18:20:41,160 INFO L434 NwaCegarLoop]: 82 mSDtfsCounter, 150 mSDsluCounter, 725 mSDsCounter, 0 mSdLazyCounter, 387 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 807 SdHoareTripleChecker+Invalid, 398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 18:20:41,160 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 807 Invalid, 398 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 387 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 18:20:41,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 566 states. [2024-09-12 18:20:41,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 566 to 557. [2024-09-12 18:20:41,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 557 states, 527 states have (on average 1.1973434535104364) internal successors, (631), 542 states have internal predecessors, (631), 8 states have call successors, (8), 8 states have call predecessors, (8), 9 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) [2024-09-12 18:20:41,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 557 states to 557 states and 648 transitions. [2024-09-12 18:20:41,304 INFO L78 Accepts]: Start accepts. Automaton has 557 states and 648 transitions. Word has length 51 [2024-09-12 18:20:41,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:20:41,305 INFO L474 AbstractCegarLoop]: Abstraction has 557 states and 648 transitions. [2024-09-12 18:20:41,305 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 19 states have (on average 6.631578947368421) internal successors, (126), 19 states have internal predecessors, (126), 6 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-09-12 18:20:41,305 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:20:41,305 INFO L276 IsEmpty]: Start isEmpty. Operand 557 states and 648 transitions. [2024-09-12 18:20:41,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-09-12 18:20:41,306 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:20:41,306 INFO L216 NwaCegarLoop]: trace histogram [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 18:20:41,318 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2024-09-12 18:20:41,509 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,27 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:20:41,510 INFO L399 AbstractCegarLoop]: === Iteration 46 === Targeting student_versionErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [correct_versionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, correct_versionErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, correct_versionErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-09-12 18:20:41,510 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:20:41,510 INFO L85 PathProgramCache]: Analyzing trace with hash 566712946, now seen corresponding path program 1 times [2024-09-12 18:20:41,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:20:41,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819615856] [2024-09-12 18:20:41,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:20:41,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:20:41,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:20:41,533 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:20:41,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:20:41,535 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-12 18:20:41,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:20:41,541 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-09-12 18:20:41,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:20:41,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819615856] [2024-09-12 18:20:41,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819615856] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:20:41,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [678766124] [2024-09-12 18:20:41,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:20:41,541 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:20:41,542 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:20:41,543 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 18:20:41,544 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-09-12 18:20:41,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:20:41,582 INFO L262 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-09-12 18:20:41,583 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:20:41,597 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-09-12 18:20:41,597 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:20:41,617 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-09-12 18:20:41,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [678766124] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:20:41,617 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:20:41,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-09-12 18:20:41,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89053247] [2024-09-12 18:20:41,617 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:20:41,617 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-09-12 18:20:41,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:20:41,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-09-12 18:20:41,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-09-12 18:20:41,618 INFO L87 Difference]: Start difference. First operand 557 states and 648 transitions. Second operand has 7 states, 6 states have (on average 8.833333333333334) internal successors, (53), 7 states have internal predecessors, (53), 1 states have call successors, (4), 1 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 18:20:41,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:20:41,791 INFO L93 Difference]: Finished difference Result 786 states and 928 transitions. [2024-09-12 18:20:41,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-12 18:20:41,791 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 8.833333333333334) internal successors, (53), 7 states have internal predecessors, (53), 1 states have call successors, (4), 1 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 52 [2024-09-12 18:20:41,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:20:41,794 INFO L225 Difference]: With dead ends: 786 [2024-09-12 18:20:41,794 INFO L226 Difference]: Without dead ends: 785 [2024-09-12 18:20:41,794 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-09-12 18:20:41,795 INFO L434 NwaCegarLoop]: 63 mSDtfsCounter, 79 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 228 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 18:20:41,795 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 228 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 18:20:41,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 785 states. [2024-09-12 18:20:41,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 785 to 583. [2024-09-12 18:20:41,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 583 states, 553 states have (on average 1.2025316455696202) internal successors, (665), 568 states have internal predecessors, (665), 8 states have call successors, (8), 8 states have call predecessors, (8), 9 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) [2024-09-12 18:20:41,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 583 states to 583 states and 682 transitions. [2024-09-12 18:20:41,946 INFO L78 Accepts]: Start accepts. Automaton has 583 states and 682 transitions. Word has length 52 [2024-09-12 18:20:41,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:20:41,946 INFO L474 AbstractCegarLoop]: Abstraction has 583 states and 682 transitions. [2024-09-12 18:20:41,946 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 8.833333333333334) internal successors, (53), 7 states have internal predecessors, (53), 1 states have call successors, (4), 1 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 18:20:41,947 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:20:41,947 INFO L276 IsEmpty]: Start isEmpty. Operand 583 states and 682 transitions. [2024-09-12 18:20:41,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-09-12 18:20:41,948 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:20:41,948 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, 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 18:20:41,961 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2024-09-12 18:20:42,151 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,28 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:20:42,152 INFO L399 AbstractCegarLoop]: === Iteration 47 === Targeting student_versionErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [correct_versionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, correct_versionErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, correct_versionErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-09-12 18:20:42,152 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:20:42,152 INFO L85 PathProgramCache]: Analyzing trace with hash -587944751, now seen corresponding path program 1 times [2024-09-12 18:20:42,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:20:42,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310628735] [2024-09-12 18:20:42,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:20:42,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:20:42,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:20:42,174 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:20:42,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:20:42,176 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-12 18:20:42,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:20:42,179 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-09-12 18:20:42,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:20:42,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310628735] [2024-09-12 18:20:42,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310628735] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:20:42,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [616591705] [2024-09-12 18:20:42,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:20:42,180 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:20:42,180 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:20:42,181 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 18:20:42,182 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-09-12 18:20:42,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:20:42,219 INFO L262 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-09-12 18:20:42,220 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:20:42,233 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-09-12 18:20:42,234 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-12 18:20:42,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [616591705] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 18:20:42,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-12 18:20:42,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2024-09-12 18:20:42,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772102720] [2024-09-12 18:20:42,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 18:20:42,234 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-09-12 18:20:42,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:20:42,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-09-12 18:20:42,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-09-12 18:20:42,235 INFO L87 Difference]: Start difference. First operand 583 states and 682 transitions. Second operand has 4 states, 3 states have (on average 16.0) internal successors, (48), 4 states have internal predecessors, (48), 1 states have call successors, (4), 1 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 18:20:42,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:20:42,388 INFO L93 Difference]: Finished difference Result 583 states and 682 transitions. [2024-09-12 18:20:42,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-12 18:20:42,389 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 16.0) internal successors, (48), 4 states have internal predecessors, (48), 1 states have call successors, (4), 1 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 54 [2024-09-12 18:20:42,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:20:42,391 INFO L225 Difference]: With dead ends: 583 [2024-09-12 18:20:42,391 INFO L226 Difference]: Without dead ends: 582 [2024-09-12 18:20:42,391 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 57 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 18:20:42,391 INFO L434 NwaCegarLoop]: 63 mSDtfsCounter, 3 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 18:20:42,392 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 122 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 18:20:42,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 582 states. [2024-09-12 18:20:42,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 582 to 582. [2024-09-12 18:20:42,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 582 states, 553 states have (on average 1.1952983725135624) internal successors, (661), 567 states have internal predecessors, (661), 8 states have call successors, (8), 8 states have call predecessors, (8), 9 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) [2024-09-12 18:20:42,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 582 states to 582 states and 678 transitions. [2024-09-12 18:20:42,532 INFO L78 Accepts]: Start accepts. Automaton has 582 states and 678 transitions. Word has length 54 [2024-09-12 18:20:42,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:20:42,533 INFO L474 AbstractCegarLoop]: Abstraction has 582 states and 678 transitions. [2024-09-12 18:20:42,533 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 16.0) internal successors, (48), 4 states have internal predecessors, (48), 1 states have call successors, (4), 1 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 18:20:42,533 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:20:42,533 INFO L276 IsEmpty]: Start isEmpty. Operand 582 states and 678 transitions. [2024-09-12 18:20:42,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-09-12 18:20:42,534 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:20:42,534 INFO L216 NwaCegarLoop]: trace histogram [3, 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] [2024-09-12 18:20:42,550 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2024-09-12 18:20:42,734 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2024-09-12 18:20:42,735 INFO L399 AbstractCegarLoop]: === Iteration 48 === Targeting student_versionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [correct_versionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, correct_versionErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, correct_versionErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-09-12 18:20:42,735 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:20:42,735 INFO L85 PathProgramCache]: Analyzing trace with hash -849702220, now seen corresponding path program 2 times [2024-09-12 18:20:42,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:20:42,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569505250] [2024-09-12 18:20:42,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:20:42,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:20:42,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:20:42,783 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:20:42,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:20:42,785 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-12 18:20:42,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:20:42,791 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-09-12 18:20:42,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:20:42,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569505250] [2024-09-12 18:20:42,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569505250] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:20:42,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [996986178] [2024-09-12 18:20:42,792 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 18:20:42,792 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:20:42,792 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:20:42,793 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 18:20:42,794 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-09-12 18:20:42,837 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 18:20:42,838 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 18:20:42,838 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-09-12 18:20:42,839 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:20:42,884 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-09-12 18:20:42,884 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-12 18:20:42,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [996986178] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 18:20:42,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-12 18:20:42,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 9 [2024-09-12 18:20:42,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847284207] [2024-09-12 18:20:42,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 18:20:42,885 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-09-12 18:20:42,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:20:42,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-09-12 18:20:42,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-09-12 18:20:42,886 INFO L87 Difference]: Start difference. First operand 582 states and 678 transitions. Second operand has 7 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-12 18:20:43,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:20:43,082 INFO L93 Difference]: Finished difference Result 582 states and 678 transitions. [2024-09-12 18:20:43,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-12 18:20:43,083 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 54 [2024-09-12 18:20:43,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:20:43,085 INFO L225 Difference]: With dead ends: 582 [2024-09-12 18:20:43,085 INFO L226 Difference]: Without dead ends: 581 [2024-09-12 18:20:43,085 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2024-09-12 18:20:43,085 INFO L434 NwaCegarLoop]: 61 mSDtfsCounter, 30 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 260 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 18:20:43,086 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 260 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 18:20:43,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2024-09-12 18:20:43,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 581. [2024-09-12 18:20:43,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 581 states, 553 states have (on average 1.1844484629294756) internal successors, (655), 566 states have internal predecessors, (655), 8 states have call successors, (8), 8 states have call predecessors, (8), 9 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) [2024-09-12 18:20:43,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 672 transitions. [2024-09-12 18:20:43,231 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 672 transitions. Word has length 54 [2024-09-12 18:20:43,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:20:43,231 INFO L474 AbstractCegarLoop]: Abstraction has 581 states and 672 transitions. [2024-09-12 18:20:43,232 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-12 18:20:43,232 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:20:43,232 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 672 transitions. [2024-09-12 18:20:43,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-09-12 18:20:43,233 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:20:43,233 INFO L216 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:20:43,245 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2024-09-12 18:20:43,433 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2024-09-12 18:20:43,433 INFO L399 AbstractCegarLoop]: === Iteration 49 === Targeting student_versionErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [correct_versionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, correct_versionErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, correct_versionErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-09-12 18:20:43,433 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:20:43,434 INFO L85 PathProgramCache]: Analyzing trace with hash -1046417947, now seen corresponding path program 1 times [2024-09-12 18:20:43,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:20:43,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099581647] [2024-09-12 18:20:43,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:20:43,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:20:43,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:20:43,465 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:20:43,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:20:43,467 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-12 18:20:43,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:20:43,472 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-09-12 18:20:43,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:20:43,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099581647] [2024-09-12 18:20:43,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1099581647] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:20:43,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [352832859] [2024-09-12 18:20:43,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:20:43,476 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:20:43,477 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:20:43,478 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 18:20:43,480 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-09-12 18:20:43,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:20:43,527 INFO L262 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-09-12 18:20:43,527 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:20:43,541 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-09-12 18:20:43,541 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:20:43,558 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-09-12 18:20:43,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [352832859] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:20:43,559 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:20:43,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-09-12 18:20:43,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005227706] [2024-09-12 18:20:43,559 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:20:43,559 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-09-12 18:20:43,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:20:43,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-09-12 18:20:43,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-09-12 18:20:43,560 INFO L87 Difference]: Start difference. First operand 581 states and 672 transitions. Second operand has 7 states, 6 states have (on average 11.0) internal successors, (66), 7 states have internal predecessors, (66), 1 states have call successors, (4), 1 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 18:20:43,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:20:43,727 INFO L93 Difference]: Finished difference Result 639 states and 758 transitions. [2024-09-12 18:20:43,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-12 18:20:43,727 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 11.0) internal successors, (66), 7 states have internal predecessors, (66), 1 states have call successors, (4), 1 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 55 [2024-09-12 18:20:43,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:20:43,730 INFO L225 Difference]: With dead ends: 639 [2024-09-12 18:20:43,730 INFO L226 Difference]: Without dead ends: 638 [2024-09-12 18:20:43,730 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-09-12 18:20:43,731 INFO L434 NwaCegarLoop]: 62 mSDtfsCounter, 4 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 18:20:43,731 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 187 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 18:20:43,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 638 states. [2024-09-12 18:20:43,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 638 to 635. [2024-09-12 18:20:43,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 635 states, 607 states have (on average 1.200988467874794) internal successors, (729), 620 states have internal predecessors, (729), 8 states have call successors, (8), 8 states have call predecessors, (8), 9 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) [2024-09-12 18:20:43,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 635 states to 635 states and 746 transitions. [2024-09-12 18:20:43,891 INFO L78 Accepts]: Start accepts. Automaton has 635 states and 746 transitions. Word has length 55 [2024-09-12 18:20:43,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:20:43,892 INFO L474 AbstractCegarLoop]: Abstraction has 635 states and 746 transitions. [2024-09-12 18:20:43,892 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 11.0) internal successors, (66), 7 states have internal predecessors, (66), 1 states have call successors, (4), 1 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 18:20:43,892 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:20:43,892 INFO L276 IsEmpty]: Start isEmpty. Operand 635 states and 746 transitions. [2024-09-12 18:20:43,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-09-12 18:20:43,893 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:20:43,893 INFO L216 NwaCegarLoop]: trace histogram [3, 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 18:20:43,905 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2024-09-12 18:20:44,093 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2024-09-12 18:20:44,093 INFO L399 AbstractCegarLoop]: === Iteration 50 === Targeting student_versionErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [correct_versionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, correct_versionErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, correct_versionErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-09-12 18:20:44,094 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:20:44,094 INFO L85 PathProgramCache]: Analyzing trace with hash 740205042, now seen corresponding path program 2 times [2024-09-12 18:20:44,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:20:44,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776502622] [2024-09-12 18:20:44,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:20:44,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:20:44,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:20:44,137 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:20:44,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:20:44,139 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-12 18:20:44,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:20:44,144 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-09-12 18:20:44,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:20:44,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776502622] [2024-09-12 18:20:44,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776502622] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:20:44,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1999282162] [2024-09-12 18:20:44,144 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 18:20:44,144 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:20:44,145 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:20:44,146 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 18:20:44,147 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2024-09-12 18:20:44,188 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 18:20:44,189 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 18:20:44,189 INFO L262 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-09-12 18:20:44,190 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:20:44,251 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-09-12 18:20:44,251 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-12 18:20:44,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1999282162] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 18:20:44,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-12 18:20:44,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 9 [2024-09-12 18:20:44,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341700283] [2024-09-12 18:20:44,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 18:20:44,252 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-09-12 18:20:44,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:20:44,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-09-12 18:20:44,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-09-12 18:20:44,252 INFO L87 Difference]: Start difference. First operand 635 states and 746 transitions. Second operand has 7 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-12 18:20:44,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:20:44,522 INFO L93 Difference]: Finished difference Result 635 states and 746 transitions. [2024-09-12 18:20:44,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-12 18:20:44,523 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 55 [2024-09-12 18:20:44,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:20:44,525 INFO L225 Difference]: With dead ends: 635 [2024-09-12 18:20:44,525 INFO L226 Difference]: Without dead ends: 634 [2024-09-12 18:20:44,525 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2024-09-12 18:20:44,525 INFO L434 NwaCegarLoop]: 57 mSDtfsCounter, 32 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 200 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 18:20:44,526 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 200 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 18:20:44,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2024-09-12 18:20:44,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 627. [2024-09-12 18:20:44,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 627 states, 600 states have (on average 1.19) internal successors, (714), 612 states have internal predecessors, (714), 8 states have call successors, (8), 8 states have call predecessors, (8), 9 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) [2024-09-12 18:20:44,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 627 states to 627 states and 731 transitions. [2024-09-12 18:20:44,671 INFO L78 Accepts]: Start accepts. Automaton has 627 states and 731 transitions. Word has length 55 [2024-09-12 18:20:44,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:20:44,671 INFO L474 AbstractCegarLoop]: Abstraction has 627 states and 731 transitions. [2024-09-12 18:20:44,671 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-12 18:20:44,672 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:20:44,672 INFO L276 IsEmpty]: Start isEmpty. Operand 627 states and 731 transitions. [2024-09-12 18:20:44,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-09-12 18:20:44,673 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:20:44,673 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:20:44,686 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2024-09-12 18:20:44,873 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2024-09-12 18:20:44,873 INFO L399 AbstractCegarLoop]: === Iteration 51 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [correct_versionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, correct_versionErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, correct_versionErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-09-12 18:20:44,874 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:20:44,874 INFO L85 PathProgramCache]: Analyzing trace with hash 1003501949, now seen corresponding path program 1 times [2024-09-12 18:20:44,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:20:44,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826570049] [2024-09-12 18:20:44,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:20:44,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:20:44,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:20:44,962 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:20:44,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:20:44,963 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-12 18:20:44,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:20:45,027 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-09-12 18:20:45,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:20:45,104 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-12 18:20:45,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:20:45,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826570049] [2024-09-12 18:20:45,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826570049] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:20:45,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1481340460] [2024-09-12 18:20:45,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:20:45,105 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:20:45,105 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:20:45,107 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 18:20:45,108 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2024-09-12 18:20:45,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:20:45,148 INFO L262 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-09-12 18:20:45,149 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:20:45,267 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-12 18:20:45,268 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:20:45,360 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-12 18:20:45,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1481340460] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:20:45,360 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:20:45,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 24 [2024-09-12 18:20:45,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592973500] [2024-09-12 18:20:45,360 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:20:45,360 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-09-12 18:20:45,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:20:45,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-09-12 18:20:45,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=497, Unknown=0, NotChecked=0, Total=552 [2024-09-12 18:20:45,361 INFO L87 Difference]: Start difference. First operand 627 states and 731 transitions. Second operand has 24 states, 19 states have (on average 3.210526315789474) internal successors, (61), 19 states have internal predecessors, (61), 4 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2024-09-12 18:20:45,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:20:45,716 INFO L93 Difference]: Finished difference Result 683 states and 798 transitions. [2024-09-12 18:20:45,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-09-12 18:20:45,717 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 19 states have (on average 3.210526315789474) internal successors, (61), 19 states have internal predecessors, (61), 4 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) Word has length 58 [2024-09-12 18:20:45,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:20:45,719 INFO L225 Difference]: With dead ends: 683 [2024-09-12 18:20:45,719 INFO L226 Difference]: Without dead ends: 675 [2024-09-12 18:20:45,720 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 113 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=81, Invalid=789, Unknown=0, NotChecked=0, Total=870 [2024-09-12 18:20:45,720 INFO L434 NwaCegarLoop]: 60 mSDtfsCounter, 50 mSDsluCounter, 1016 mSDsCounter, 0 mSdLazyCounter, 475 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 1076 SdHoareTripleChecker+Invalid, 476 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 475 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 18:20:45,720 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 1076 Invalid, 476 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 475 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 18:20:45,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 675 states. [2024-09-12 18:20:45,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 675 to 627. [2024-09-12 18:20:45,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 627 states, 600 states have (on average 1.1883333333333332) internal successors, (713), 612 states have internal predecessors, (713), 8 states have call successors, (8), 8 states have call predecessors, (8), 9 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) [2024-09-12 18:20:45,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 627 states to 627 states and 730 transitions. [2024-09-12 18:20:45,873 INFO L78 Accepts]: Start accepts. Automaton has 627 states and 730 transitions. Word has length 58 [2024-09-12 18:20:45,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:20:45,873 INFO L474 AbstractCegarLoop]: Abstraction has 627 states and 730 transitions. [2024-09-12 18:20:45,873 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 19 states have (on average 3.210526315789474) internal successors, (61), 19 states have internal predecessors, (61), 4 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2024-09-12 18:20:45,873 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:20:45,873 INFO L276 IsEmpty]: Start isEmpty. Operand 627 states and 730 transitions. [2024-09-12 18:20:45,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-09-12 18:20:45,874 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:20:45,874 INFO L216 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:20:45,886 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2024-09-12 18:20:46,078 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable50 [2024-09-12 18:20:46,079 INFO L399 AbstractCegarLoop]: === Iteration 52 === Targeting correct_versionErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [correct_versionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, correct_versionErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, correct_versionErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-09-12 18:20:46,079 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:20:46,079 INFO L85 PathProgramCache]: Analyzing trace with hash 725911089, now seen corresponding path program 2 times [2024-09-12 18:20:46,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:20:46,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594869990] [2024-09-12 18:20:46,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:20:46,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:20:46,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:20:46,121 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:20:46,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:20:46,123 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-09-12 18:20:46,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:20:46,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594869990] [2024-09-12 18:20:46,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594869990] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:20:46,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1161863026] [2024-09-12 18:20:46,124 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 18:20:46,124 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:20:46,124 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:20:46,125 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 18:20:46,127 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2024-09-12 18:20:46,164 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 18:20:46,164 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 18:20:46,165 INFO L262 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-09-12 18:20:46,165 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:20:46,207 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-09-12 18:20:46,207 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:20:46,277 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-09-12 18:20:46,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1161863026] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:20:46,277 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:20:46,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2024-09-12 18:20:46,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018311985] [2024-09-12 18:20:46,277 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:20:46,277 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-09-12 18:20:46,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:20:46,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-09-12 18:20:46,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=96, Unknown=0, NotChecked=0, Total=156 [2024-09-12 18:20:46,278 INFO L87 Difference]: Start difference. First operand 627 states and 730 transitions. Second operand has 13 states, 12 states have (on average 6.416666666666667) internal successors, (77), 13 states have internal predecessors, (77), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:20:46,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:20:46,749 INFO L93 Difference]: Finished difference Result 1206 states and 1402 transitions. [2024-09-12 18:20:46,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-09-12 18:20:46,749 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 6.416666666666667) internal successors, (77), 13 states have internal predecessors, (77), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 56 [2024-09-12 18:20:46,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:20:46,753 INFO L225 Difference]: With dead ends: 1206 [2024-09-12 18:20:46,753 INFO L226 Difference]: Without dead ends: 1205 [2024-09-12 18:20:46,753 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=235, Invalid=467, Unknown=0, NotChecked=0, Total=702 [2024-09-12 18:20:46,754 INFO L434 NwaCegarLoop]: 56 mSDtfsCounter, 148 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 322 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 18:20:46,754 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 322 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 18:20:46,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1205 states. [2024-09-12 18:20:46,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1205 to 603. [2024-09-12 18:20:46,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 603 states, 577 states have (on average 1.1819757365684576) internal successors, (682), 588 states have internal predecessors, (682), 8 states have call successors, (8), 8 states have call predecessors, (8), 9 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) [2024-09-12 18:20:46,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 699 transitions. [2024-09-12 18:20:46,912 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 699 transitions. Word has length 56 [2024-09-12 18:20:46,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:20:46,912 INFO L474 AbstractCegarLoop]: Abstraction has 603 states and 699 transitions. [2024-09-12 18:20:46,912 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 6.416666666666667) internal successors, (77), 13 states have internal predecessors, (77), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:20:46,913 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:20:46,913 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 699 transitions. [2024-09-12 18:20:46,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-09-12 18:20:46,914 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:20:46,914 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:20:46,926 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2024-09-12 18:20:47,114 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,34 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:20:47,115 INFO L399 AbstractCegarLoop]: === Iteration 53 === Targeting student_versionErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [correct_versionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, correct_versionErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, correct_versionErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-09-12 18:20:47,115 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:20:47,115 INFO L85 PathProgramCache]: Analyzing trace with hash -964283637, now seen corresponding path program 1 times [2024-09-12 18:20:47,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:20:47,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320936935] [2024-09-12 18:20:47,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:20:47,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:20:47,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:20:47,159 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:20:47,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:20:47,161 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-12 18:20:47,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:20:47,164 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-12 18:20:47,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:20:47,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320936935] [2024-09-12 18:20:47,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320936935] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:20:47,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [729934311] [2024-09-12 18:20:47,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:20:47,164 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:20:47,165 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:20:47,166 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 18:20:47,167 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2024-09-12 18:20:47,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:20:47,206 INFO L262 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-09-12 18:20:47,207 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:20:47,252 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-12 18:20:47,252 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:20:47,295 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-12 18:20:47,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [729934311] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:20:47,295 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:20:47,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2024-09-12 18:20:47,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692788936] [2024-09-12 18:20:47,295 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:20:47,296 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-09-12 18:20:47,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:20:47,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-09-12 18:20:47,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-09-12 18:20:47,297 INFO L87 Difference]: Start difference. First operand 603 states and 699 transitions. Second operand has 13 states, 13 states have (on average 6.538461538461538) internal successors, (85), 13 states have internal predecessors, (85), 1 states have call successors, (4), 1 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 18:20:47,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:20:47,570 INFO L93 Difference]: Finished difference Result 735 states and 856 transitions. [2024-09-12 18:20:47,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-09-12 18:20:47,571 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.538461538461538) internal successors, (85), 13 states have internal predecessors, (85), 1 states have call successors, (4), 1 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 58 [2024-09-12 18:20:47,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:20:47,573 INFO L225 Difference]: With dead ends: 735 [2024-09-12 18:20:47,573 INFO L226 Difference]: Without dead ends: 608 [2024-09-12 18:20:47,573 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 112 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=103, Invalid=317, Unknown=0, NotChecked=0, Total=420 [2024-09-12 18:20:47,573 INFO L434 NwaCegarLoop]: 52 mSDtfsCounter, 48 mSDsluCounter, 269 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 321 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 18:20:47,574 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 321 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 18:20:47,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 608 states. [2024-09-12 18:20:47,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 608 to 571. [2024-09-12 18:20:47,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 571 states, 548 states have (on average 1.1697080291970803) internal successors, (641), 558 states have internal predecessors, (641), 7 states have call successors, (7), 7 states have call predecessors, (7), 7 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2024-09-12 18:20:47,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 655 transitions. [2024-09-12 18:20:47,725 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 655 transitions. Word has length 58 [2024-09-12 18:20:47,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:20:47,725 INFO L474 AbstractCegarLoop]: Abstraction has 571 states and 655 transitions. [2024-09-12 18:20:47,725 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.538461538461538) internal successors, (85), 13 states have internal predecessors, (85), 1 states have call successors, (4), 1 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 18:20:47,725 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:20:47,725 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 655 transitions. [2024-09-12 18:20:47,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-09-12 18:20:47,726 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:20:47,726 INFO L216 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:20:47,738 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2024-09-12 18:20:47,926 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,35 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:20:47,926 INFO L399 AbstractCegarLoop]: === Iteration 54 === Targeting correct_versionErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [correct_versionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, correct_versionErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, correct_versionErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-09-12 18:20:47,927 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:20:47,927 INFO L85 PathProgramCache]: Analyzing trace with hash -1027356364, now seen corresponding path program 2 times [2024-09-12 18:20:47,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:20:47,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903847972] [2024-09-12 18:20:47,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:20:47,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:20:47,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:20:48,008 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:20:48,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:20:48,009 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 0 proven. 180 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-12 18:20:48,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:20:48,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903847972] [2024-09-12 18:20:48,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1903847972] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:20:48,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1606520963] [2024-09-12 18:20:48,010 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 18:20:48,010 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:20:48,010 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:20:48,012 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 18:20:48,014 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2024-09-12 18:20:48,052 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 18:20:48,052 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 18:20:48,053 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-09-12 18:20:48,054 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:20:48,099 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 0 proven. 180 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-12 18:20:48,099 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:20:48,204 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 0 proven. 180 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-12 18:20:48,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1606520963] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:20:48,204 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:20:48,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 20 [2024-09-12 18:20:48,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969556276] [2024-09-12 18:20:48,205 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:20:48,205 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-09-12 18:20:48,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:20:48,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-09-12 18:20:48,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2024-09-12 18:20:48,205 INFO L87 Difference]: Start difference. First operand 571 states and 655 transitions. Second operand has 21 states, 20 states have (on average 5.95) internal successors, (119), 21 states have internal predecessors, (119), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:20:48,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:20:48,833 INFO L93 Difference]: Finished difference Result 1263 states and 1451 transitions. [2024-09-12 18:20:48,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-09-12 18:20:48,834 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 5.95) internal successors, (119), 21 states have internal predecessors, (119), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 59 [2024-09-12 18:20:48,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:20:48,837 INFO L225 Difference]: With dead ends: 1263 [2024-09-12 18:20:48,837 INFO L226 Difference]: Without dead ends: 1262 [2024-09-12 18:20:48,838 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2024-09-12 18:20:48,838 INFO L434 NwaCegarLoop]: 65 mSDtfsCounter, 471 mSDsluCounter, 326 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 471 SdHoareTripleChecker+Valid, 391 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 18:20:48,838 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [471 Valid, 391 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 18:20:48,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1262 states. [2024-09-12 18:20:49,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1262 to 721. [2024-09-12 18:20:49,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 721 states, 698 states have (on average 1.17621776504298) internal successors, (821), 708 states have internal predecessors, (821), 7 states have call successors, (7), 7 states have call predecessors, (7), 7 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2024-09-12 18:20:49,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 721 states to 721 states and 835 transitions. [2024-09-12 18:20:49,041 INFO L78 Accepts]: Start accepts. Automaton has 721 states and 835 transitions. Word has length 59 [2024-09-12 18:20:49,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:20:49,042 INFO L474 AbstractCegarLoop]: Abstraction has 721 states and 835 transitions. [2024-09-12 18:20:49,042 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 5.95) internal successors, (119), 21 states have internal predecessors, (119), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:20:49,042 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:20:49,042 INFO L276 IsEmpty]: Start isEmpty. Operand 721 states and 835 transitions. [2024-09-12 18:20:49,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-09-12 18:20:49,043 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:20:49,043 INFO L216 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 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 18:20:49,056 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2024-09-12 18:20:49,247 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable53 [2024-09-12 18:20:49,248 INFO L399 AbstractCegarLoop]: === Iteration 55 === Targeting correct_versionErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [correct_versionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, correct_versionErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, correct_versionErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-09-12 18:20:49,248 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:20:49,248 INFO L85 PathProgramCache]: Analyzing trace with hash -1006633823, now seen corresponding path program 4 times [2024-09-12 18:20:49,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:20:49,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476307010] [2024-09-12 18:20:49,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:20:49,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:20:49,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:20:49,316 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:20:49,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:20:49,317 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 84 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-09-12 18:20:49,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:20:49,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476307010] [2024-09-12 18:20:49,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476307010] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:20:49,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1041232238] [2024-09-12 18:20:49,318 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-12 18:20:49,318 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:20:49,318 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:20:49,319 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 18:20:49,320 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2024-09-12 18:20:49,351 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-12 18:20:49,352 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 18:20:49,352 INFO L262 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-09-12 18:20:49,353 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:20:49,414 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 84 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-09-12 18:20:49,415 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:20:49,527 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 84 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-09-12 18:20:49,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1041232238] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:20:49,527 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:20:49,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 22 [2024-09-12 18:20:49,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506960084] [2024-09-12 18:20:49,527 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:20:49,527 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-09-12 18:20:49,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:20:49,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-09-12 18:20:49,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=323, Unknown=0, NotChecked=0, Total=506 [2024-09-12 18:20:49,528 INFO L87 Difference]: Start difference. First operand 721 states and 835 transitions. Second operand has 23 states, 22 states have (on average 5.363636363636363) internal successors, (118), 23 states have internal predecessors, (118), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:20:50,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:20:50,535 INFO L93 Difference]: Finished difference Result 1205 states and 1379 transitions. [2024-09-12 18:20:50,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2024-09-12 18:20:50,535 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 5.363636363636363) internal successors, (118), 23 states have internal predecessors, (118), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 59 [2024-09-12 18:20:50,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:20:50,539 INFO L225 Difference]: With dead ends: 1205 [2024-09-12 18:20:50,539 INFO L226 Difference]: Without dead ends: 1204 [2024-09-12 18:20:50,540 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1287 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=1350, Invalid=2556, Unknown=0, NotChecked=0, Total=3906 [2024-09-12 18:20:50,540 INFO L434 NwaCegarLoop]: 66 mSDtfsCounter, 877 mSDsluCounter, 461 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 877 SdHoareTripleChecker+Valid, 527 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 18:20:50,540 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [877 Valid, 527 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 18:20:50,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1204 states. [2024-09-12 18:20:50,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1204 to 726. [2024-09-12 18:20:50,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 726 states, 703 states have (on average 1.1763869132290186) internal successors, (827), 713 states have internal predecessors, (827), 7 states have call successors, (7), 7 states have call predecessors, (7), 7 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2024-09-12 18:20:50,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 726 states to 726 states and 841 transitions. [2024-09-12 18:20:50,776 INFO L78 Accepts]: Start accepts. Automaton has 726 states and 841 transitions. Word has length 59 [2024-09-12 18:20:50,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:20:50,776 INFO L474 AbstractCegarLoop]: Abstraction has 726 states and 841 transitions. [2024-09-12 18:20:50,777 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 5.363636363636363) internal successors, (118), 23 states have internal predecessors, (118), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:20:50,777 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:20:50,777 INFO L276 IsEmpty]: Start isEmpty. Operand 726 states and 841 transitions. [2024-09-12 18:20:50,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-09-12 18:20:50,778 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:20:50,778 INFO L216 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:20:50,793 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2024-09-12 18:20:50,978 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,37 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:20:50,979 INFO L399 AbstractCegarLoop]: === Iteration 56 === Targeting correct_versionErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [correct_versionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, correct_versionErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, correct_versionErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-09-12 18:20:50,979 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:20:50,979 INFO L85 PathProgramCache]: Analyzing trace with hash 456995552, now seen corresponding path program 5 times [2024-09-12 18:20:50,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:20:50,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829130140] [2024-09-12 18:20:50,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:20:50,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:20:50,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:20:51,049 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:20:51,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:20:51,051 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-09-12 18:20:51,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:20:51,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829130140] [2024-09-12 18:20:51,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [829130140] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:20:51,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [742285436] [2024-09-12 18:20:51,051 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-12 18:20:51,051 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:20:51,052 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:20:51,052 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 18:20:51,053 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2024-09-12 18:20:51,088 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2024-09-12 18:20:51,088 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 18:20:51,088 INFO L262 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-09-12 18:20:51,089 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:20:51,209 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 63 proven. 18 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-09-12 18:20:51,209 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:20:51,301 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 63 proven. 18 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-09-12 18:20:51,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [742285436] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:20:51,301 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:20:51,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 11] total 25 [2024-09-12 18:20:51,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471735371] [2024-09-12 18:20:51,302 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:20:51,302 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-09-12 18:20:51,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:20:51,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-09-12 18:20:51,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=487, Unknown=0, NotChecked=0, Total=600 [2024-09-12 18:20:51,303 INFO L87 Difference]: Start difference. First operand 726 states and 841 transitions. Second operand has 25 states, 25 states have (on average 5.24) internal successors, (131), 25 states have internal predecessors, (131), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:20:52,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:20:52,396 INFO L93 Difference]: Finished difference Result 1344 states and 1552 transitions. [2024-09-12 18:20:52,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2024-09-12 18:20:52,397 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 5.24) internal successors, (131), 25 states have internal predecessors, (131), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 59 [2024-09-12 18:20:52,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:20:52,400 INFO L225 Difference]: With dead ends: 1344 [2024-09-12 18:20:52,400 INFO L226 Difference]: Without dead ends: 1106 [2024-09-12 18:20:52,401 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 102 SyntacticMatches, 3 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1489 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=953, Invalid=3877, Unknown=0, NotChecked=0, Total=4830 [2024-09-12 18:20:52,401 INFO L434 NwaCegarLoop]: 59 mSDtfsCounter, 265 mSDsluCounter, 631 mSDsCounter, 0 mSdLazyCounter, 467 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 265 SdHoareTripleChecker+Valid, 690 SdHoareTripleChecker+Invalid, 471 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 467 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 18:20:52,401 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [265 Valid, 690 Invalid, 471 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 467 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 18:20:52,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1106 states. [2024-09-12 18:20:52,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1106 to 1011. [2024-09-12 18:20:52,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1011 states, 988 states have (on average 1.1730769230769231) internal successors, (1159), 998 states have internal predecessors, (1159), 7 states have call successors, (7), 7 states have call predecessors, (7), 7 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2024-09-12 18:20:52,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1011 states to 1011 states and 1173 transitions. [2024-09-12 18:20:52,758 INFO L78 Accepts]: Start accepts. Automaton has 1011 states and 1173 transitions. Word has length 59 [2024-09-12 18:20:52,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:20:52,758 INFO L474 AbstractCegarLoop]: Abstraction has 1011 states and 1173 transitions. [2024-09-12 18:20:52,758 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 5.24) internal successors, (131), 25 states have internal predecessors, (131), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:20:52,758 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:20:52,758 INFO L276 IsEmpty]: Start isEmpty. Operand 1011 states and 1173 transitions. [2024-09-12 18:20:52,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-09-12 18:20:52,759 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:20:52,759 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:20:52,771 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2024-09-12 18:20:52,959 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55,38 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:20:52,960 INFO L399 AbstractCegarLoop]: === Iteration 57 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [correct_versionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, correct_versionErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, correct_versionErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-09-12 18:20:52,960 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:20:52,960 INFO L85 PathProgramCache]: Analyzing trace with hash -92717465, now seen corresponding path program 2 times [2024-09-12 18:20:52,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:20:52,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898435362] [2024-09-12 18:20:52,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:20:52,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:20:52,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:20:53,000 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:20:53,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:20:53,002 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-12 18:20:53,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:20:53,152 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-09-12 18:20:53,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:20:53,212 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-12 18:20:53,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:20:53,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898435362] [2024-09-12 18:20:53,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [898435362] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:20:53,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1842057641] [2024-09-12 18:20:53,213 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 18:20:53,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:20:53,213 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:20:53,215 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 18:20:53,216 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2024-09-12 18:20:53,260 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 18:20:53,261 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 18:20:53,262 INFO L262 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-09-12 18:20:53,263 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:20:53,407 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-12 18:20:53,407 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:20:53,620 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-12 18:20:53,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1842057641] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:20:53,621 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:20:53,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 19 [2024-09-12 18:20:53,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194619760] [2024-09-12 18:20:53,621 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:20:53,621 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-09-12 18:20:53,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:20:53,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-09-12 18:20:53,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=284, Unknown=0, NotChecked=0, Total=342 [2024-09-12 18:20:53,622 INFO L87 Difference]: Start difference. First operand 1011 states and 1173 transitions. Second operand has 19 states, 19 states have (on average 5.894736842105263) internal successors, (112), 19 states have internal predecessors, (112), 3 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-12 18:20:54,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:20:54,179 INFO L93 Difference]: Finished difference Result 1052 states and 1215 transitions. [2024-09-12 18:20:54,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-09-12 18:20:54,180 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.894736842105263) internal successors, (112), 19 states have internal predecessors, (112), 3 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 63 [2024-09-12 18:20:54,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:20:54,183 INFO L225 Difference]: With dead ends: 1052 [2024-09-12 18:20:54,183 INFO L226 Difference]: Without dead ends: 1028 [2024-09-12 18:20:54,183 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 120 SyntacticMatches, 3 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=347, Unknown=0, NotChecked=0, Total=420 [2024-09-12 18:20:54,184 INFO L434 NwaCegarLoop]: 51 mSDtfsCounter, 25 mSDsluCounter, 561 mSDsCounter, 0 mSdLazyCounter, 313 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 612 SdHoareTripleChecker+Invalid, 315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 18:20:54,184 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 612 Invalid, 315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 313 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 18:20:54,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1028 states. [2024-09-12 18:20:54,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1028 to 1023. [2024-09-12 18:20:54,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1023 states, 1000 states have (on average 1.17) internal successors, (1170), 1010 states have internal predecessors, (1170), 7 states have call successors, (7), 7 states have call predecessors, (7), 7 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2024-09-12 18:20:54,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1023 states to 1023 states and 1184 transitions. [2024-09-12 18:20:54,565 INFO L78 Accepts]: Start accepts. Automaton has 1023 states and 1184 transitions. Word has length 63 [2024-09-12 18:20:54,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:20:54,565 INFO L474 AbstractCegarLoop]: Abstraction has 1023 states and 1184 transitions. [2024-09-12 18:20:54,565 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.894736842105263) internal successors, (112), 19 states have internal predecessors, (112), 3 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-12 18:20:54,565 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:20:54,566 INFO L276 IsEmpty]: Start isEmpty. Operand 1023 states and 1184 transitions. [2024-09-12 18:20:54,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-09-12 18:20:54,566 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:20:54,567 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:20:54,580 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2024-09-12 18:20:54,769 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2024-09-12 18:20:54,770 INFO L399 AbstractCegarLoop]: === Iteration 58 === Targeting student_versionErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [correct_versionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, correct_versionErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, correct_versionErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-09-12 18:20:54,770 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:20:54,770 INFO L85 PathProgramCache]: Analyzing trace with hash 986509552, now seen corresponding path program 1 times [2024-09-12 18:20:54,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:20:54,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168462540] [2024-09-12 18:20:54,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:20:54,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:20:54,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:20:54,811 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:20:54,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:20:54,813 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-12 18:20:54,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:20:54,816 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-09-12 18:20:54,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:20:54,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168462540] [2024-09-12 18:20:54,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168462540] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:20:54,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [632962094] [2024-09-12 18:20:54,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:20:54,817 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:20:54,817 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:20:54,819 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 18:20:54,820 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2024-09-12 18:20:54,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:20:54,860 INFO L262 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-09-12 18:20:54,862 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:20:55,037 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 19 proven. 14 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-09-12 18:20:55,037 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:20:55,260 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 19 proven. 14 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-09-12 18:20:55,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [632962094] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:20:55,261 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:20:55,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 11, 11] total 21 [2024-09-12 18:20:55,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964875708] [2024-09-12 18:20:55,261 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:20:55,261 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-09-12 18:20:55,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:20:55,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-09-12 18:20:55,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=366, Unknown=0, NotChecked=0, Total=420 [2024-09-12 18:20:55,263 INFO L87 Difference]: Start difference. First operand 1023 states and 1184 transitions. Second operand has 21 states, 21 states have (on average 6.619047619047619) internal successors, (139), 20 states have internal predecessors, (139), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-09-12 18:20:56,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:20:56,156 INFO L93 Difference]: Finished difference Result 1433 states and 1651 transitions. [2024-09-12 18:20:56,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-09-12 18:20:56,157 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 6.619047619047619) internal successors, (139), 20 states have internal predecessors, (139), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 63 [2024-09-12 18:20:56,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:20:56,161 INFO L225 Difference]: With dead ends: 1433 [2024-09-12 18:20:56,161 INFO L226 Difference]: Without dead ends: 1343 [2024-09-12 18:20:56,162 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 112 SyntacticMatches, 3 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=147, Invalid=783, Unknown=0, NotChecked=0, Total=930 [2024-09-12 18:20:56,162 INFO L434 NwaCegarLoop]: 51 mSDtfsCounter, 126 mSDsluCounter, 582 mSDsCounter, 0 mSdLazyCounter, 470 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 633 SdHoareTripleChecker+Invalid, 475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 18:20:56,162 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 633 Invalid, 475 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 470 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 18:20:56,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1343 states. [2024-09-12 18:20:56,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1343 to 1219. [2024-09-12 18:20:56,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1219 states, 1190 states have (on average 1.1613445378151261) internal successors, (1382), 1202 states have internal predecessors, (1382), 9 states have call successors, (9), 9 states have call predecessors, (9), 11 states have return successors, (11), 7 states have call predecessors, (11), 7 states have call successors, (11) [2024-09-12 18:20:56,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1219 states to 1219 states and 1402 transitions. [2024-09-12 18:20:56,714 INFO L78 Accepts]: Start accepts. Automaton has 1219 states and 1402 transitions. Word has length 63 [2024-09-12 18:20:56,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:20:56,715 INFO L474 AbstractCegarLoop]: Abstraction has 1219 states and 1402 transitions. [2024-09-12 18:20:56,715 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 6.619047619047619) internal successors, (139), 20 states have internal predecessors, (139), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-09-12 18:20:56,715 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:20:56,715 INFO L276 IsEmpty]: Start isEmpty. Operand 1219 states and 1402 transitions. [2024-09-12 18:20:56,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-09-12 18:20:56,716 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:20:56,716 INFO L216 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:20:56,729 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2024-09-12 18:20:56,916 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2024-09-12 18:20:56,917 INFO L399 AbstractCegarLoop]: === Iteration 59 === Targeting correct_versionErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [correct_versionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, correct_versionErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, correct_versionErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-09-12 18:20:56,917 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:20:56,917 INFO L85 PathProgramCache]: Analyzing trace with hash 1016840923, now seen corresponding path program 3 times [2024-09-12 18:20:56,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:20:56,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682312385] [2024-09-12 18:20:56,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:20:56,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:20:56,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:20:57,016 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:20:57,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:20:57,017 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:20:57,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:20:57,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682312385] [2024-09-12 18:20:57,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682312385] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:20:57,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1806517236] [2024-09-12 18:20:57,018 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-12 18:20:57,018 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:20:57,018 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:20:57,020 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 18:20:57,021 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2024-09-12 18:20:57,062 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-09-12 18:20:57,062 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 18:20:57,063 INFO L262 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-09-12 18:20:57,064 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:20:57,111 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:20:57,112 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:20:57,274 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:20:57,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1806517236] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:20:57,275 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:20:57,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 24 [2024-09-12 18:20:57,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951575192] [2024-09-12 18:20:57,275 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:20:57,275 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-09-12 18:20:57,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:20:57,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-09-12 18:20:57,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2024-09-12 18:20:57,276 INFO L87 Difference]: Start difference. First operand 1219 states and 1402 transitions. Second operand has 25 states, 24 states have (on average 5.041666666666667) internal successors, (121), 25 states have internal predecessors, (121), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:21:00,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:21:00,193 INFO L93 Difference]: Finished difference Result 4911 states and 5678 transitions. [2024-09-12 18:21:00,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-09-12 18:21:00,193 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 5.041666666666667) internal successors, (121), 25 states have internal predecessors, (121), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 63 [2024-09-12 18:21:00,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:21:00,208 INFO L225 Difference]: With dead ends: 4911 [2024-09-12 18:21:00,208 INFO L226 Difference]: Without dead ends: 4910 [2024-09-12 18:21:00,210 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2024-09-12 18:21:00,210 INFO L434 NwaCegarLoop]: 60 mSDtfsCounter, 1112 mSDsluCounter, 472 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1112 SdHoareTripleChecker+Valid, 532 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 18:21:00,210 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [1112 Valid, 532 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 18:21:00,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4910 states. [2024-09-12 18:21:00,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4910 to 1279. [2024-09-12 18:21:00,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1279 states, 1250 states have (on average 1.1632) internal successors, (1454), 1262 states have internal predecessors, (1454), 9 states have call successors, (9), 9 states have call predecessors, (9), 11 states have return successors, (11), 7 states have call predecessors, (11), 7 states have call successors, (11) [2024-09-12 18:21:00,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1279 states to 1279 states and 1474 transitions. [2024-09-12 18:21:00,771 INFO L78 Accepts]: Start accepts. Automaton has 1279 states and 1474 transitions. Word has length 63 [2024-09-12 18:21:00,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:21:00,772 INFO L474 AbstractCegarLoop]: Abstraction has 1279 states and 1474 transitions. [2024-09-12 18:21:00,772 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 5.041666666666667) internal successors, (121), 25 states have internal predecessors, (121), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:21:00,772 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:21:00,772 INFO L276 IsEmpty]: Start isEmpty. Operand 1279 states and 1474 transitions. [2024-09-12 18:21:00,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-09-12 18:21:00,773 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:21:00,773 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:21:00,786 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Ended with exit code 0 [2024-09-12 18:21:00,974 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2024-09-12 18:21:00,974 INFO L399 AbstractCegarLoop]: === Iteration 60 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [correct_versionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, correct_versionErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, correct_versionErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-09-12 18:21:00,974 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:21:00,974 INFO L85 PathProgramCache]: Analyzing trace with hash -1880924860, now seen corresponding path program 3 times [2024-09-12 18:21:00,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:21:00,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359378000] [2024-09-12 18:21:00,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:21:00,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:21:00,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:21:01,077 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:21:01,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:21:01,079 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-12 18:21:01,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:21:01,143 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-09-12 18:21:01,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:21:01,234 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-12 18:21:01,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:21:01,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359378000] [2024-09-12 18:21:01,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359378000] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:21:01,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2090617383] [2024-09-12 18:21:01,235 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-12 18:21:01,235 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:21:01,235 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:21:01,237 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 18:21:01,239 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2024-09-12 18:21:01,281 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-09-12 18:21:01,281 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 18:21:01,282 INFO L262 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-09-12 18:21:01,284 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:21:01,433 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-12 18:21:01,434 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:21:01,542 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-12 18:21:01,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2090617383] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:21:01,543 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:21:01,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 26 [2024-09-12 18:21:01,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369751565] [2024-09-12 18:21:01,543 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:21:01,544 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-09-12 18:21:01,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:21:01,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-09-12 18:21:01,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=591, Unknown=0, NotChecked=0, Total=650 [2024-09-12 18:21:01,544 INFO L87 Difference]: Start difference. First operand 1279 states and 1474 transitions. Second operand has 26 states, 21 states have (on average 3.380952380952381) internal successors, (71), 21 states have internal predecessors, (71), 4 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2024-09-12 18:21:02,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:21:02,430 INFO L93 Difference]: Finished difference Result 1340 states and 1540 transitions. [2024-09-12 18:21:02,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-09-12 18:21:02,431 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 21 states have (on average 3.380952380952381) internal successors, (71), 21 states have internal predecessors, (71), 4 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) Word has length 68 [2024-09-12 18:21:02,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:21:02,435 INFO L225 Difference]: With dead ends: 1340 [2024-09-12 18:21:02,435 INFO L226 Difference]: Without dead ends: 1295 [2024-09-12 18:21:02,436 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 133 SyntacticMatches, 2 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=85, Invalid=907, Unknown=0, NotChecked=0, Total=992 [2024-09-12 18:21:02,436 INFO L434 NwaCegarLoop]: 80 mSDtfsCounter, 67 mSDsluCounter, 1641 mSDsCounter, 0 mSdLazyCounter, 842 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 1721 SdHoareTripleChecker+Invalid, 844 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 842 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-12 18:21:02,436 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 1721 Invalid, 844 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 842 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-12 18:21:02,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1295 states. [2024-09-12 18:21:03,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1295 to 1250. [2024-09-12 18:21:03,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1250 states, 1224 states have (on average 1.1658496732026145) internal successors, (1427), 1235 states have internal predecessors, (1427), 8 states have call successors, (8), 8 states have call predecessors, (8), 9 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) [2024-09-12 18:21:03,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1250 states to 1250 states and 1444 transitions. [2024-09-12 18:21:03,093 INFO L78 Accepts]: Start accepts. Automaton has 1250 states and 1444 transitions. Word has length 68 [2024-09-12 18:21:03,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:21:03,093 INFO L474 AbstractCegarLoop]: Abstraction has 1250 states and 1444 transitions. [2024-09-12 18:21:03,093 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 21 states have (on average 3.380952380952381) internal successors, (71), 21 states have internal predecessors, (71), 4 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2024-09-12 18:21:03,094 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:21:03,094 INFO L276 IsEmpty]: Start isEmpty. Operand 1250 states and 1444 transitions. [2024-09-12 18:21:03,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-09-12 18:21:03,095 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:21:03,095 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:21:03,107 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Ended with exit code 0 [2024-09-12 18:21:03,295 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59,42 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:21:03,296 INFO L399 AbstractCegarLoop]: === Iteration 61 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [correct_versionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, correct_versionErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, correct_versionErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-09-12 18:21:03,296 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:21:03,296 INFO L85 PathProgramCache]: Analyzing trace with hash -169905373, now seen corresponding path program 4 times [2024-09-12 18:21:03,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:21:03,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529170169] [2024-09-12 18:21:03,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:21:03,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:21:03,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:21:03,341 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:21:03,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:21:03,342 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-12 18:21:03,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:21:03,418 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-12 18:21:03,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:21:03,485 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-09-12 18:21:03,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:21:03,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529170169] [2024-09-12 18:21:03,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529170169] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:21:03,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [39071952] [2024-09-12 18:21:03,485 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-12 18:21:03,486 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:21:03,486 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:21:03,487 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 18:21:03,490 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2024-09-12 18:21:03,534 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-12 18:21:03,534 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 18:21:03,535 INFO L262 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-09-12 18:21:03,536 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:21:03,658 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-09-12 18:21:03,659 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:21:03,877 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-09-12 18:21:03,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [39071952] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:21:03,878 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:21:03,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 20 [2024-09-12 18:21:03,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847692345] [2024-09-12 18:21:03,878 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:21:03,878 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-09-12 18:21:03,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:21:03,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-09-12 18:21:03,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=317, Unknown=0, NotChecked=0, Total=380 [2024-09-12 18:21:03,879 INFO L87 Difference]: Start difference. First operand 1250 states and 1444 transitions. Second operand has 20 states, 20 states have (on average 4.7) internal successors, (94), 20 states have internal predecessors, (94), 3 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-12 18:21:04,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:21:04,589 INFO L93 Difference]: Finished difference Result 1267 states and 1457 transitions. [2024-09-12 18:21:04,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-09-12 18:21:04,590 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.7) internal successors, (94), 20 states have internal predecessors, (94), 3 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 68 [2024-09-12 18:21:04,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:21:04,594 INFO L225 Difference]: With dead ends: 1267 [2024-09-12 18:21:04,594 INFO L226 Difference]: Without dead ends: 1217 [2024-09-12 18:21:04,595 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 130 SyntacticMatches, 3 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=384, Unknown=0, NotChecked=0, Total=462 [2024-09-12 18:21:04,595 INFO L434 NwaCegarLoop]: 63 mSDtfsCounter, 50 mSDsluCounter, 594 mSDsCounter, 0 mSdLazyCounter, 288 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 657 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 18:21:04,595 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 657 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 288 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 18:21:04,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1217 states. [2024-09-12 18:21:05,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1217 to 1212. [2024-09-12 18:21:05,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1212 states, 1186 states have (on average 1.1669477234401349) internal successors, (1384), 1197 states have internal predecessors, (1384), 8 states have call successors, (8), 8 states have call predecessors, (8), 9 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) [2024-09-12 18:21:05,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1212 states to 1212 states and 1401 transitions. [2024-09-12 18:21:05,153 INFO L78 Accepts]: Start accepts. Automaton has 1212 states and 1401 transitions. Word has length 68 [2024-09-12 18:21:05,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:21:05,153 INFO L474 AbstractCegarLoop]: Abstraction has 1212 states and 1401 transitions. [2024-09-12 18:21:05,153 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 4.7) internal successors, (94), 20 states have internal predecessors, (94), 3 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-12 18:21:05,153 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:21:05,154 INFO L276 IsEmpty]: Start isEmpty. Operand 1212 states and 1401 transitions. [2024-09-12 18:21:05,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-09-12 18:21:05,155 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:21:05,155 INFO L216 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 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] [2024-09-12 18:21:05,168 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2024-09-12 18:21:05,355 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,43 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:21:05,355 INFO L399 AbstractCegarLoop]: === Iteration 62 === Targeting student_versionErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [correct_versionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, correct_versionErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, correct_versionErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-09-12 18:21:05,355 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:21:05,356 INFO L85 PathProgramCache]: Analyzing trace with hash 607963256, now seen corresponding path program 2 times [2024-09-12 18:21:05,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:21:05,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532583158] [2024-09-12 18:21:05,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:21:05,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:21:05,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:21:05,396 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:21:05,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:21:05,398 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-12 18:21:05,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:21:05,401 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-09-12 18:21:05,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:21:05,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532583158] [2024-09-12 18:21:05,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532583158] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:21:05,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1389101865] [2024-09-12 18:21:05,402 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 18:21:05,402 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:21:05,402 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:21:05,404 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 18:21:05,405 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2024-09-12 18:21:05,447 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 18:21:05,448 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 18:21:05,449 INFO L262 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-09-12 18:21:05,450 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:21:05,616 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 30 proven. 14 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-09-12 18:21:05,616 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:21:05,820 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 30 proven. 14 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-09-12 18:21:05,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1389101865] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:21:05,821 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:21:05,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 11, 11] total 22 [2024-09-12 18:21:05,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561356697] [2024-09-12 18:21:05,821 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:21:05,821 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-09-12 18:21:05,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:21:05,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-09-12 18:21:05,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=402, Unknown=0, NotChecked=0, Total=462 [2024-09-12 18:21:05,822 INFO L87 Difference]: Start difference. First operand 1212 states and 1401 transitions. Second operand has 22 states, 22 states have (on average 5.454545454545454) internal successors, (120), 21 states have internal predecessors, (120), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-09-12 18:21:06,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:21:06,927 INFO L93 Difference]: Finished difference Result 2181 states and 2539 transitions. [2024-09-12 18:21:06,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-09-12 18:21:06,927 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.454545454545454) internal successors, (120), 21 states have internal predecessors, (120), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 67 [2024-09-12 18:21:06,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:21:06,932 INFO L225 Difference]: With dead ends: 2181 [2024-09-12 18:21:06,932 INFO L226 Difference]: Without dead ends: 1967 [2024-09-12 18:21:06,934 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 120 SyntacticMatches, 3 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=161, Invalid=831, Unknown=0, NotChecked=0, Total=992 [2024-09-12 18:21:06,934 INFO L434 NwaCegarLoop]: 51 mSDtfsCounter, 218 mSDsluCounter, 684 mSDsCounter, 0 mSdLazyCounter, 396 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 735 SdHoareTripleChecker+Invalid, 401 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 396 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 18:21:06,934 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [219 Valid, 735 Invalid, 401 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 396 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 18:21:06,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1967 states. [2024-09-12 18:21:07,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1967 to 1427. [2024-09-12 18:21:07,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1427 states, 1392 states have (on average 1.1688218390804597) internal successors, (1627), 1406 states have internal predecessors, (1627), 11 states have call successors, (11), 11 states have call predecessors, (11), 15 states have return successors, (15), 9 states have call predecessors, (15), 9 states have call successors, (15) [2024-09-12 18:21:07,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1427 states to 1427 states and 1653 transitions. [2024-09-12 18:21:07,561 INFO L78 Accepts]: Start accepts. Automaton has 1427 states and 1653 transitions. Word has length 67 [2024-09-12 18:21:07,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:21:07,561 INFO L474 AbstractCegarLoop]: Abstraction has 1427 states and 1653 transitions. [2024-09-12 18:21:07,561 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 5.454545454545454) internal successors, (120), 21 states have internal predecessors, (120), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-09-12 18:21:07,562 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:21:07,562 INFO L276 IsEmpty]: Start isEmpty. Operand 1427 states and 1653 transitions. [2024-09-12 18:21:07,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-09-12 18:21:07,563 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:21:07,563 INFO L216 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:21:07,576 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0 [2024-09-12 18:21:07,764 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,44 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:21:07,764 INFO L399 AbstractCegarLoop]: === Iteration 63 === Targeting student_versionErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [correct_versionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, correct_versionErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, correct_versionErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-09-12 18:21:07,764 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:21:07,764 INFO L85 PathProgramCache]: Analyzing trace with hash 1294891413, now seen corresponding path program 2 times [2024-09-12 18:21:07,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:21:07,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52269563] [2024-09-12 18:21:07,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:21:07,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:21:07,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:21:07,860 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:21:07,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:21:07,862 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-12 18:21:07,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:21:07,948 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 22 proven. 36 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-09-12 18:21:07,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:21:07,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52269563] [2024-09-12 18:21:07,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52269563] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:21:07,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [521826166] [2024-09-12 18:21:07,949 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 18:21:07,949 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:21:07,949 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:21:07,951 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 18:21:07,952 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2024-09-12 18:21:07,988 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-09-12 18:21:07,988 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 18:21:07,989 INFO L262 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-09-12 18:21:07,990 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:21:08,096 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-09-12 18:21:08,097 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:21:08,189 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-09-12 18:21:08,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [521826166] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:21:08,189 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:21:08,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 5, 5] total 21 [2024-09-12 18:21:08,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812009047] [2024-09-12 18:21:08,189 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:21:08,190 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-09-12 18:21:08,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:21:08,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-09-12 18:21:08,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2024-09-12 18:21:08,190 INFO L87 Difference]: Start difference. First operand 1427 states and 1653 transitions. Second operand has 21 states, 21 states have (on average 5.666666666666667) internal successors, (119), 18 states have internal predecessors, (119), 4 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-09-12 18:21:09,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:21:09,323 INFO L93 Difference]: Finished difference Result 1855 states and 2147 transitions. [2024-09-12 18:21:09,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-09-12 18:21:09,323 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.666666666666667) internal successors, (119), 18 states have internal predecessors, (119), 4 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 71 [2024-09-12 18:21:09,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:21:09,328 INFO L225 Difference]: With dead ends: 1855 [2024-09-12 18:21:09,328 INFO L226 Difference]: Without dead ends: 1728 [2024-09-12 18:21:09,329 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=148, Invalid=782, Unknown=0, NotChecked=0, Total=930 [2024-09-12 18:21:09,329 INFO L434 NwaCegarLoop]: 65 mSDtfsCounter, 114 mSDsluCounter, 1085 mSDsCounter, 0 mSdLazyCounter, 640 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 1150 SdHoareTripleChecker+Invalid, 648 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 640 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 18:21:09,329 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 1150 Invalid, 648 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 640 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 18:21:09,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1728 states. [2024-09-12 18:21:10,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1728 to 1696. [2024-09-12 18:21:10,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1696 states, 1653 states have (on average 1.162129461584997) internal successors, (1921), 1669 states have internal predecessors, (1921), 14 states have call successors, (14), 14 states have call predecessors, (14), 21 states have return successors, (21), 12 states have call predecessors, (21), 12 states have call successors, (21) [2024-09-12 18:21:10,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1696 states to 1696 states and 1956 transitions. [2024-09-12 18:21:10,085 INFO L78 Accepts]: Start accepts. Automaton has 1696 states and 1956 transitions. Word has length 71 [2024-09-12 18:21:10,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:21:10,086 INFO L474 AbstractCegarLoop]: Abstraction has 1696 states and 1956 transitions. [2024-09-12 18:21:10,086 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.666666666666667) internal successors, (119), 18 states have internal predecessors, (119), 4 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-09-12 18:21:10,086 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:21:10,086 INFO L276 IsEmpty]: Start isEmpty. Operand 1696 states and 1956 transitions. [2024-09-12 18:21:10,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-09-12 18:21:10,088 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:21:10,088 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:21:10,101 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Forceful destruction successful, exit code 0 [2024-09-12 18:21:10,288 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,45 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:21:10,288 INFO L399 AbstractCegarLoop]: === Iteration 64 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [correct_versionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, correct_versionErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, correct_versionErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-09-12 18:21:10,289 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:21:10,289 INFO L85 PathProgramCache]: Analyzing trace with hash 2065876398, now seen corresponding path program 5 times [2024-09-12 18:21:10,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:21:10,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062780491] [2024-09-12 18:21:10,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:21:10,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:21:10,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:21:10,337 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:21:10,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:21:10,339 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-12 18:21:10,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:21:10,416 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-12 18:21:10,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:21:10,486 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-12 18:21:10,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:21:10,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062780491] [2024-09-12 18:21:10,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062780491] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:21:10,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1140495417] [2024-09-12 18:21:10,487 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-12 18:21:10,487 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:21:10,487 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:21:10,488 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 18:21:10,490 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2024-09-12 18:21:10,535 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-09-12 18:21:10,535 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 18:21:10,536 INFO L262 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-09-12 18:21:10,537 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:21:10,719 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-12 18:21:10,719 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:21:11,019 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-12 18:21:11,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1140495417] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:21:11,019 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:21:11,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 11] total 25 [2024-09-12 18:21:11,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212436545] [2024-09-12 18:21:11,020 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:21:11,020 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-09-12 18:21:11,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:21:11,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-09-12 18:21:11,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=520, Unknown=0, NotChecked=0, Total=600 [2024-09-12 18:21:11,021 INFO L87 Difference]: Start difference. First operand 1696 states and 1956 transitions. Second operand has 25 states, 25 states have (on average 5.68) internal successors, (142), 25 states have internal predecessors, (142), 3 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-12 18:21:12,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:21:12,270 INFO L93 Difference]: Finished difference Result 1801 states and 2085 transitions. [2024-09-12 18:21:12,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-09-12 18:21:12,271 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 5.68) internal successors, (142), 25 states have internal predecessors, (142), 3 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 73 [2024-09-12 18:21:12,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:21:12,275 INFO L225 Difference]: With dead ends: 1801 [2024-09-12 18:21:12,275 INFO L226 Difference]: Without dead ends: 1769 [2024-09-12 18:21:12,276 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 136 SyntacticMatches, 3 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=116, Invalid=754, Unknown=0, NotChecked=0, Total=870 [2024-09-12 18:21:12,276 INFO L434 NwaCegarLoop]: 63 mSDtfsCounter, 30 mSDsluCounter, 904 mSDsCounter, 0 mSdLazyCounter, 516 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 967 SdHoareTripleChecker+Invalid, 520 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 516 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 18:21:12,277 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 967 Invalid, 520 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 516 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 18:21:12,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1769 states. [2024-09-12 18:21:13,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1769 to 1674. [2024-09-12 18:21:13,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1674 states, 1631 states have (on average 1.161250766400981) internal successors, (1894), 1647 states have internal predecessors, (1894), 14 states have call successors, (14), 14 states have call predecessors, (14), 21 states have return successors, (21), 12 states have call predecessors, (21), 12 states have call successors, (21) [2024-09-12 18:21:13,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1674 states to 1674 states and 1929 transitions. [2024-09-12 18:21:13,083 INFO L78 Accepts]: Start accepts. Automaton has 1674 states and 1929 transitions. Word has length 73 [2024-09-12 18:21:13,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:21:13,083 INFO L474 AbstractCegarLoop]: Abstraction has 1674 states and 1929 transitions. [2024-09-12 18:21:13,083 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 5.68) internal successors, (142), 25 states have internal predecessors, (142), 3 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-12 18:21:13,083 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:21:13,083 INFO L276 IsEmpty]: Start isEmpty. Operand 1674 states and 1929 transitions. [2024-09-12 18:21:13,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-09-12 18:21:13,085 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:21:13,085 INFO L216 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:21:13,098 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Ended with exit code 0 [2024-09-12 18:21:13,289 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,46 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:21:13,290 INFO L399 AbstractCegarLoop]: === Iteration 65 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [correct_versionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, correct_versionErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, correct_versionErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-09-12 18:21:13,290 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:21:13,290 INFO L85 PathProgramCache]: Analyzing trace with hash -135304983, now seen corresponding path program 6 times [2024-09-12 18:21:13,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:21:13,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552009012] [2024-09-12 18:21:13,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:21:13,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:21:13,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:21:13,312 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:21:13,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:21:13,314 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-12 18:21:13,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:21:13,317 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-12 18:21:13,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:21:13,343 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-09-12 18:21:13,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:21:13,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552009012] [2024-09-12 18:21:13,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552009012] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:21:13,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [772690828] [2024-09-12 18:21:13,344 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-12 18:21:13,344 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:21:13,344 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:21:13,345 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 18:21:13,347 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2024-09-12 18:21:13,395 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-09-12 18:21:13,395 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 18:21:13,396 INFO L262 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-09-12 18:21:13,397 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:21:13,435 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-09-12 18:21:13,435 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:21:13,472 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-09-12 18:21:13,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [772690828] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:21:13,472 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:21:13,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 9 [2024-09-12 18:21:13,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357594589] [2024-09-12 18:21:13,473 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:21:13,473 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-09-12 18:21:13,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:21:13,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-09-12 18:21:13,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2024-09-12 18:21:13,474 INFO L87 Difference]: Start difference. First operand 1674 states and 1929 transitions. Second operand has 9 states, 9 states have (on average 6.888888888888889) internal successors, (62), 9 states have internal predecessors, (62), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-09-12 18:21:14,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:21:14,311 INFO L93 Difference]: Finished difference Result 1698 states and 1950 transitions. [2024-09-12 18:21:14,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-09-12 18:21:14,311 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.888888888888889) internal successors, (62), 9 states have internal predecessors, (62), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 73 [2024-09-12 18:21:14,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:21:14,315 INFO L225 Difference]: With dead ends: 1698 [2024-09-12 18:21:14,315 INFO L226 Difference]: Without dead ends: 1676 [2024-09-12 18:21:14,316 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 146 SyntacticMatches, 5 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2024-09-12 18:21:14,316 INFO L434 NwaCegarLoop]: 68 mSDtfsCounter, 61 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 267 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 18:21:14,316 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 267 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 18:21:14,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1676 states. [2024-09-12 18:21:15,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1676 to 1674. [2024-09-12 18:21:15,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1674 states, 1631 states have (on average 1.1563458001226241) internal successors, (1886), 1647 states have internal predecessors, (1886), 14 states have call successors, (14), 14 states have call predecessors, (14), 21 states have return successors, (21), 12 states have call predecessors, (21), 12 states have call successors, (21) [2024-09-12 18:21:15,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1674 states to 1674 states and 1921 transitions. [2024-09-12 18:21:15,091 INFO L78 Accepts]: Start accepts. Automaton has 1674 states and 1921 transitions. Word has length 73 [2024-09-12 18:21:15,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:21:15,091 INFO L474 AbstractCegarLoop]: Abstraction has 1674 states and 1921 transitions. [2024-09-12 18:21:15,091 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.888888888888889) internal successors, (62), 9 states have internal predecessors, (62), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-09-12 18:21:15,091 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:21:15,091 INFO L276 IsEmpty]: Start isEmpty. Operand 1674 states and 1921 transitions. [2024-09-12 18:21:15,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-09-12 18:21:15,093 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:21:15,093 INFO L216 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:21:15,105 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Forceful destruction successful, exit code 0 [2024-09-12 18:21:15,293 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64,47 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:21:15,293 INFO L399 AbstractCegarLoop]: === Iteration 66 === Targeting correct_versionErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [correct_versionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, correct_versionErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, correct_versionErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-09-12 18:21:15,294 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:21:15,294 INFO L85 PathProgramCache]: Analyzing trace with hash 1499875183, now seen corresponding path program 6 times [2024-09-12 18:21:15,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:21:15,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184974226] [2024-09-12 18:21:15,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:21:15,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:21:15,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:21:15,397 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:21:15,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:21:15,399 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 0 proven. 123 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-09-12 18:21:15,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:21:15,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184974226] [2024-09-12 18:21:15,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184974226] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:21:15,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1533704168] [2024-09-12 18:21:15,400 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-12 18:21:15,401 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:21:15,401 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:21:15,402 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 18:21:15,403 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2024-09-12 18:21:15,446 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2024-09-12 18:21:15,447 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 18:21:15,448 INFO L262 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-09-12 18:21:15,448 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:21:15,542 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 0 proven. 123 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-09-12 18:21:15,542 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:21:15,687 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 0 proven. 123 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-09-12 18:21:15,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1533704168] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:21:15,688 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:21:15,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 27 [2024-09-12 18:21:15,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667862786] [2024-09-12 18:21:15,688 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:21:15,688 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-09-12 18:21:15,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:21:15,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-09-12 18:21:15,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=247, Invalid=509, Unknown=0, NotChecked=0, Total=756 [2024-09-12 18:21:15,689 INFO L87 Difference]: Start difference. First operand 1674 states and 1921 transitions. Second operand has 28 states, 27 states have (on average 5.296296296296297) internal successors, (143), 28 states have internal predecessors, (143), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:21:18,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:21:18,742 INFO L93 Difference]: Finished difference Result 2746 states and 3148 transitions. [2024-09-12 18:21:18,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2024-09-12 18:21:18,743 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 5.296296296296297) internal successors, (143), 28 states have internal predecessors, (143), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 74 [2024-09-12 18:21:18,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:21:18,748 INFO L225 Difference]: With dead ends: 2746 [2024-09-12 18:21:18,748 INFO L226 Difference]: Without dead ends: 2745 [2024-09-12 18:21:18,749 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3886 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=3303, Invalid=6597, Unknown=0, NotChecked=0, Total=9900 [2024-09-12 18:21:18,749 INFO L434 NwaCegarLoop]: 63 mSDtfsCounter, 1176 mSDsluCounter, 569 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1176 SdHoareTripleChecker+Valid, 632 SdHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 18:21:18,750 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [1176 Valid, 632 Invalid, 263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 18:21:18,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2745 states. [2024-09-12 18:21:19,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2745 to 1732. [2024-09-12 18:21:19,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1732 states, 1689 states have (on average 1.1580817051509769) internal successors, (1956), 1705 states have internal predecessors, (1956), 14 states have call successors, (14), 14 states have call predecessors, (14), 21 states have return successors, (21), 12 states have call predecessors, (21), 12 states have call successors, (21) [2024-09-12 18:21:19,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1732 states to 1732 states and 1991 transitions. [2024-09-12 18:21:19,651 INFO L78 Accepts]: Start accepts. Automaton has 1732 states and 1991 transitions. Word has length 74 [2024-09-12 18:21:19,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:21:19,651 INFO L474 AbstractCegarLoop]: Abstraction has 1732 states and 1991 transitions. [2024-09-12 18:21:19,651 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 5.296296296296297) internal successors, (143), 28 states have internal predecessors, (143), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:21:19,651 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:21:19,652 INFO L276 IsEmpty]: Start isEmpty. Operand 1732 states and 1991 transitions. [2024-09-12 18:21:19,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-09-12 18:21:19,653 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:21:19,653 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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, 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 18:21:19,666 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Forceful destruction successful, exit code 0 [2024-09-12 18:21:19,853 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65,48 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:21:19,854 INFO L399 AbstractCegarLoop]: === Iteration 67 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [correct_versionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, correct_versionErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, correct_versionErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-09-12 18:21:19,854 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:21:19,854 INFO L85 PathProgramCache]: Analyzing trace with hash -398570915, now seen corresponding path program 7 times [2024-09-12 18:21:19,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:21:19,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151105369] [2024-09-12 18:21:19,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:21:19,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:21:19,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:21:19,943 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:21:19,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:21:19,944 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-12 18:21:19,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:21:20,032 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-12 18:21:20,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:21:20,134 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-12 18:21:20,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:21:20,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151105369] [2024-09-12 18:21:20,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151105369] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:21:20,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [37964861] [2024-09-12 18:21:20,134 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-12 18:21:20,135 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:21:20,135 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:21:20,136 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 18:21:20,136 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2024-09-12 18:21:20,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:21:20,182 INFO L262 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-09-12 18:21:20,183 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:21:20,323 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-12 18:21:20,324 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:21:20,419 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-12 18:21:20,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [37964861] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:21:20,419 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:21:20,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 28 [2024-09-12 18:21:20,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081073473] [2024-09-12 18:21:20,419 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:21:20,420 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-09-12 18:21:20,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:21:20,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-09-12 18:21:20,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=693, Unknown=0, NotChecked=0, Total=756 [2024-09-12 18:21:20,420 INFO L87 Difference]: Start difference. First operand 1732 states and 1991 transitions. Second operand has 28 states, 23 states have (on average 3.5217391304347827) internal successors, (81), 23 states have internal predecessors, (81), 4 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2024-09-12 18:21:21,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:21:21,671 INFO L93 Difference]: Finished difference Result 1821 states and 2094 transitions. [2024-09-12 18:21:21,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-09-12 18:21:21,672 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 23 states have (on average 3.5217391304347827) internal successors, (81), 23 states have internal predecessors, (81), 4 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) Word has length 78 [2024-09-12 18:21:21,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:21:21,676 INFO L225 Difference]: With dead ends: 1821 [2024-09-12 18:21:21,676 INFO L226 Difference]: Without dead ends: 1771 [2024-09-12 18:21:21,677 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 153 SyntacticMatches, 2 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=89, Invalid=1033, Unknown=0, NotChecked=0, Total=1122 [2024-09-12 18:21:21,677 INFO L434 NwaCegarLoop]: 99 mSDtfsCounter, 86 mSDsluCounter, 2049 mSDsCounter, 0 mSdLazyCounter, 1113 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 2148 SdHoareTripleChecker+Invalid, 1115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-12 18:21:21,677 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 2148 Invalid, 1115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1113 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-12 18:21:21,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1771 states. [2024-09-12 18:21:22,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1771 to 1707. [2024-09-12 18:21:22,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1707 states, 1667 states have (on average 1.158368326334733) internal successors, (1931), 1682 states have internal predecessors, (1931), 13 states have call successors, (13), 13 states have call predecessors, (13), 19 states have return successors, (19), 11 states have call predecessors, (19), 11 states have call successors, (19) [2024-09-12 18:21:22,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1707 states to 1707 states and 1963 transitions. [2024-09-12 18:21:22,589 INFO L78 Accepts]: Start accepts. Automaton has 1707 states and 1963 transitions. Word has length 78 [2024-09-12 18:21:22,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:21:22,589 INFO L474 AbstractCegarLoop]: Abstraction has 1707 states and 1963 transitions. [2024-09-12 18:21:22,589 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 23 states have (on average 3.5217391304347827) internal successors, (81), 23 states have internal predecessors, (81), 4 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2024-09-12 18:21:22,590 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:21:22,590 INFO L276 IsEmpty]: Start isEmpty. Operand 1707 states and 1963 transitions. [2024-09-12 18:21:22,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-09-12 18:21:22,591 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:21:22,591 INFO L216 NwaCegarLoop]: trace histogram [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, 1, 1, 1] [2024-09-12 18:21:22,604 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Ended with exit code 0 [2024-09-12 18:21:22,791 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable66 [2024-09-12 18:21:22,792 INFO L399 AbstractCegarLoop]: === Iteration 68 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [correct_versionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, correct_versionErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, correct_versionErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-09-12 18:21:22,792 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:21:22,792 INFO L85 PathProgramCache]: Analyzing trace with hash -533822551, now seen corresponding path program 8 times [2024-09-12 18:21:22,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:21:22,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653940160] [2024-09-12 18:21:22,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:21:22,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:21:22,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:21:22,877 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:21:22,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:21:22,879 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-12 18:21:22,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:21:22,946 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-12 18:21:22,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:21:23,042 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-09-12 18:21:23,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:21:23,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653940160] [2024-09-12 18:21:23,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653940160] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:21:23,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1934036447] [2024-09-12 18:21:23,042 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 18:21:23,043 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:21:23,043 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:21:23,044 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 18:21:23,046 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2024-09-12 18:21:23,091 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 18:21:23,091 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 18:21:23,092 INFO L262 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-09-12 18:21:23,093 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:21:23,261 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-09-12 18:21:23,262 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:21:23,363 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-09-12 18:21:23,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1934036447] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:21:23,363 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:21:23,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 28 [2024-09-12 18:21:23,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754895299] [2024-09-12 18:21:23,364 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:21:23,364 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-09-12 18:21:23,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:21:23,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-09-12 18:21:23,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=689, Unknown=0, NotChecked=0, Total=756 [2024-09-12 18:21:23,365 INFO L87 Difference]: Start difference. First operand 1707 states and 1963 transitions. Second operand has 28 states, 23 states have (on average 3.5217391304347827) internal successors, (81), 23 states have internal predecessors, (81), 4 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2024-09-12 18:21:24,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:21:24,637 INFO L93 Difference]: Finished difference Result 1743 states and 2003 transitions. [2024-09-12 18:21:24,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-09-12 18:21:24,637 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 23 states have (on average 3.5217391304347827) internal successors, (81), 23 states have internal predecessors, (81), 4 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) Word has length 78 [2024-09-12 18:21:24,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:21:24,643 INFO L225 Difference]: With dead ends: 1743 [2024-09-12 18:21:24,643 INFO L226 Difference]: Without dead ends: 1735 [2024-09-12 18:21:24,644 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 151 SyntacticMatches, 2 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=93, Invalid=1029, Unknown=0, NotChecked=0, Total=1122 [2024-09-12 18:21:24,644 INFO L434 NwaCegarLoop]: 63 mSDtfsCounter, 49 mSDsluCounter, 1141 mSDsCounter, 0 mSdLazyCounter, 588 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 1204 SdHoareTripleChecker+Invalid, 589 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 588 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 18:21:24,644 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 1204 Invalid, 589 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 588 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 18:21:24,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1735 states. [2024-09-12 18:21:25,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1735 to 1718. [2024-09-12 18:21:25,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1718 states, 1675 states have (on average 1.1576119402985074) internal successors, (1939), 1692 states have internal predecessors, (1939), 14 states have call successors, (14), 13 states have call predecessors, (14), 21 states have return successors, (22), 12 states have call predecessors, (22), 12 states have call successors, (22) [2024-09-12 18:21:25,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1718 states to 1718 states and 1975 transitions. [2024-09-12 18:21:25,559 INFO L78 Accepts]: Start accepts. Automaton has 1718 states and 1975 transitions. Word has length 78 [2024-09-12 18:21:25,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:21:25,559 INFO L474 AbstractCegarLoop]: Abstraction has 1718 states and 1975 transitions. [2024-09-12 18:21:25,559 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 23 states have (on average 3.5217391304347827) internal successors, (81), 23 states have internal predecessors, (81), 4 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2024-09-12 18:21:25,560 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:21:25,560 INFO L276 IsEmpty]: Start isEmpty. Operand 1718 states and 1975 transitions. [2024-09-12 18:21:25,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-09-12 18:21:25,561 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:21:25,561 INFO L216 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 5, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:21:25,574 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Ended with exit code 0 [2024-09-12 18:21:25,762 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable67 [2024-09-12 18:21:25,762 INFO L399 AbstractCegarLoop]: === Iteration 69 === Targeting student_versionErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [correct_versionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, correct_versionErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, correct_versionErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-09-12 18:21:25,763 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:21:25,763 INFO L85 PathProgramCache]: Analyzing trace with hash 2074189693, now seen corresponding path program 3 times [2024-09-12 18:21:25,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:21:25,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757082392] [2024-09-12 18:21:25,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:21:25,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:21:25,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:21:25,810 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:21:25,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:21:25,811 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-12 18:21:25,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:21:25,815 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-09-12 18:21:25,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:21:25,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757082392] [2024-09-12 18:21:25,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757082392] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:21:25,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [625819400] [2024-09-12 18:21:25,816 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-12 18:21:25,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:21:25,816 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:21:25,818 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 18:21:25,819 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2024-09-12 18:21:25,864 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-09-12 18:21:25,864 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 18:21:25,865 INFO L262 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-09-12 18:21:25,866 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:21:25,944 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 18 proven. 7 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2024-09-12 18:21:25,944 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:21:26,008 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 18 proven. 7 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2024-09-12 18:21:26,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [625819400] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:21:26,008 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:21:26,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 9] total 18 [2024-09-12 18:21:26,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529866459] [2024-09-12 18:21:26,009 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:21:26,009 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-09-12 18:21:26,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:21:26,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-09-12 18:21:26,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=228, Unknown=0, NotChecked=0, Total=306 [2024-09-12 18:21:26,010 INFO L87 Difference]: Start difference. First operand 1718 states and 1975 transitions. Second operand has 18 states, 18 states have (on average 6.222222222222222) internal successors, (112), 18 states have internal predecessors, (112), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-09-12 18:21:27,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:21:27,381 INFO L93 Difference]: Finished difference Result 3064 states and 3538 transitions. [2024-09-12 18:21:27,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-09-12 18:21:27,384 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.222222222222222) internal successors, (112), 18 states have internal predecessors, (112), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 77 [2024-09-12 18:21:27,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:21:27,390 INFO L225 Difference]: With dead ends: 3064 [2024-09-12 18:21:27,390 INFO L226 Difference]: Without dead ends: 2668 [2024-09-12 18:21:27,392 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 146 SyntacticMatches, 4 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=119, Invalid=343, Unknown=0, NotChecked=0, Total=462 [2024-09-12 18:21:27,392 INFO L434 NwaCegarLoop]: 85 mSDtfsCounter, 229 mSDsluCounter, 529 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 614 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 18:21:27,392 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [229 Valid, 614 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 18:21:27,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2668 states. [2024-09-12 18:21:28,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2668 to 1772. [2024-09-12 18:21:28,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1772 states, 1732 states have (on average 1.1495381062355658) internal successors, (1991), 1747 states have internal predecessors, (1991), 13 states have call successors, (13), 13 states have call predecessors, (13), 19 states have return successors, (19), 11 states have call predecessors, (19), 11 states have call successors, (19) [2024-09-12 18:21:28,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1772 states to 1772 states and 2023 transitions. [2024-09-12 18:21:28,351 INFO L78 Accepts]: Start accepts. Automaton has 1772 states and 2023 transitions. Word has length 77 [2024-09-12 18:21:28,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:21:28,352 INFO L474 AbstractCegarLoop]: Abstraction has 1772 states and 2023 transitions. [2024-09-12 18:21:28,352 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.222222222222222) internal successors, (112), 18 states have internal predecessors, (112), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-09-12 18:21:28,352 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:21:28,352 INFO L276 IsEmpty]: Start isEmpty. Operand 1772 states and 2023 transitions. [2024-09-12 18:21:28,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-09-12 18:21:28,354 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:21:28,354 INFO L216 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 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 18:21:28,368 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Forceful destruction successful, exit code 0 [2024-09-12 18:21:28,554 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable68 [2024-09-12 18:21:28,555 INFO L399 AbstractCegarLoop]: === Iteration 70 === Targeting student_versionErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [correct_versionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, correct_versionErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, correct_versionErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-09-12 18:21:28,555 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:21:28,555 INFO L85 PathProgramCache]: Analyzing trace with hash 746177037, now seen corresponding path program 2 times [2024-09-12 18:21:28,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:21:28,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949102150] [2024-09-12 18:21:28,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:21:28,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:21:28,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:21:28,600 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:21:28,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:21:28,601 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-12 18:21:28,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:21:28,607 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-09-12 18:21:28,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:21:28,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949102150] [2024-09-12 18:21:28,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949102150] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:21:28,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [635140920] [2024-09-12 18:21:28,608 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 18:21:28,608 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:21:28,608 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:21:28,611 INFO L229 MonitoredProcess]: Starting monitored process 52 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 18:21:28,613 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2024-09-12 18:21:28,657 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 18:21:28,658 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 18:21:28,659 INFO L262 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-09-12 18:21:28,660 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:21:28,951 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 16 proven. 68 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-09-12 18:21:28,951 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:21:29,294 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 16 proven. 68 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-09-12 18:21:29,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [635140920] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:21:29,294 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:21:29,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 15, 15] total 30 [2024-09-12 18:21:29,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706623763] [2024-09-12 18:21:29,295 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:21:29,295 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-09-12 18:21:29,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:21:29,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-09-12 18:21:29,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=788, Unknown=0, NotChecked=0, Total=870 [2024-09-12 18:21:29,296 INFO L87 Difference]: Start difference. First operand 1772 states and 2023 transitions. Second operand has 30 states, 30 states have (on average 6.066666666666666) internal successors, (182), 29 states have internal predecessors, (182), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-09-12 18:21:31,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:21:31,144 INFO L93 Difference]: Finished difference Result 2436 states and 2797 transitions. [2024-09-12 18:21:31,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-09-12 18:21:31,144 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 6.066666666666666) internal successors, (182), 29 states have internal predecessors, (182), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 78 [2024-09-12 18:21:31,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:21:31,150 INFO L225 Difference]: With dead ends: 2436 [2024-09-12 18:21:31,150 INFO L226 Difference]: Without dead ends: 2321 [2024-09-12 18:21:31,151 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 134 SyntacticMatches, 3 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 348 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=316, Invalid=2134, Unknown=0, NotChecked=0, Total=2450 [2024-09-12 18:21:31,151 INFO L434 NwaCegarLoop]: 49 mSDtfsCounter, 190 mSDsluCounter, 850 mSDsCounter, 0 mSdLazyCounter, 939 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 899 SdHoareTripleChecker+Invalid, 950 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 939 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-12 18:21:31,151 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [192 Valid, 899 Invalid, 950 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 939 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-12 18:21:31,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2321 states. [2024-09-12 18:21:32,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2321 to 2085. [2024-09-12 18:21:32,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2085 states, 2036 states have (on average 1.1463654223968567) internal successors, (2334), 2054 states have internal predecessors, (2334), 16 states have call successors, (16), 16 states have call predecessors, (16), 25 states have return successors, (25), 14 states have call predecessors, (25), 14 states have call successors, (25) [2024-09-12 18:21:32,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2085 states to 2085 states and 2375 transitions. [2024-09-12 18:21:32,315 INFO L78 Accepts]: Start accepts. Automaton has 2085 states and 2375 transitions. Word has length 78 [2024-09-12 18:21:32,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:21:32,315 INFO L474 AbstractCegarLoop]: Abstraction has 2085 states and 2375 transitions. [2024-09-12 18:21:32,316 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 6.066666666666666) internal successors, (182), 29 states have internal predecessors, (182), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-09-12 18:21:32,316 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:21:32,316 INFO L276 IsEmpty]: Start isEmpty. Operand 2085 states and 2375 transitions. [2024-09-12 18:21:32,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-09-12 18:21:32,318 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:21:32,318 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 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 18:21:32,331 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Forceful destruction successful, exit code 0 [2024-09-12 18:21:32,521 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69,52 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:21:32,522 INFO L399 AbstractCegarLoop]: === Iteration 71 === Targeting student_versionErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [correct_versionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, correct_versionErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, correct_versionErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-09-12 18:21:32,522 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:21:32,522 INFO L85 PathProgramCache]: Analyzing trace with hash 1793359159, now seen corresponding path program 2 times [2024-09-12 18:21:32,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:21:32,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785334517] [2024-09-12 18:21:32,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:21:32,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:21:32,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:21:32,571 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:21:32,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:21:32,572 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-12 18:21:32,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:21:32,575 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-09-12 18:21:32,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:21:32,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785334517] [2024-09-12 18:21:32,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785334517] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:21:32,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1667482268] [2024-09-12 18:21:32,576 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 18:21:32,576 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:21:32,576 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:21:32,578 INFO L229 MonitoredProcess]: Starting monitored process 53 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 18:21:32,579 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2024-09-12 18:21:32,628 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 18:21:32,628 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 18:21:32,629 INFO L262 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-09-12 18:21:32,630 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:21:32,688 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 22 proven. 7 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-09-12 18:21:32,689 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:21:32,739 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 22 proven. 7 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-09-12 18:21:32,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1667482268] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:21:32,739 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:21:32,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 17 [2024-09-12 18:21:32,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563311776] [2024-09-12 18:21:32,739 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:21:32,739 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-09-12 18:21:32,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:21:32,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-09-12 18:21:32,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2024-09-12 18:21:32,740 INFO L87 Difference]: Start difference. First operand 2085 states and 2375 transitions. Second operand has 17 states, 17 states have (on average 6.176470588235294) internal successors, (105), 17 states have internal predecessors, (105), 1 states have call successors, (4), 1 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 18:21:34,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:21:34,152 INFO L93 Difference]: Finished difference Result 2401 states and 2739 transitions. [2024-09-12 18:21:34,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-09-12 18:21:34,153 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 6.176470588235294) internal successors, (105), 17 states have internal predecessors, (105), 1 states have call successors, (4), 1 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 78 [2024-09-12 18:21:34,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:21:34,158 INFO L225 Difference]: With dead ends: 2401 [2024-09-12 18:21:34,158 INFO L226 Difference]: Without dead ends: 2147 [2024-09-12 18:21:34,159 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 148 SyntacticMatches, 3 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=202, Invalid=790, Unknown=0, NotChecked=0, Total=992 [2024-09-12 18:21:34,159 INFO L434 NwaCegarLoop]: 57 mSDtfsCounter, 86 mSDsluCounter, 482 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 539 SdHoareTripleChecker+Invalid, 272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 18:21:34,160 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 539 Invalid, 272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 271 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 18:21:34,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2147 states. [2024-09-12 18:21:35,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2147 to 2134. [2024-09-12 18:21:35,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2134 states, 2088 states have (on average 1.1259578544061302) internal successors, (2351), 2105 states have internal predecessors, (2351), 15 states have call successors, (15), 15 states have call predecessors, (15), 23 states have return successors, (23), 13 states have call predecessors, (23), 13 states have call successors, (23) [2024-09-12 18:21:35,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2134 states to 2134 states and 2389 transitions. [2024-09-12 18:21:35,378 INFO L78 Accepts]: Start accepts. Automaton has 2134 states and 2389 transitions. Word has length 78 [2024-09-12 18:21:35,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:21:35,378 INFO L474 AbstractCegarLoop]: Abstraction has 2134 states and 2389 transitions. [2024-09-12 18:21:35,378 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 6.176470588235294) internal successors, (105), 17 states have internal predecessors, (105), 1 states have call successors, (4), 1 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 18:21:35,378 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:21:35,379 INFO L276 IsEmpty]: Start isEmpty. Operand 2134 states and 2389 transitions. [2024-09-12 18:21:35,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2024-09-12 18:21:35,380 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:21:35,380 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 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, 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 18:21:35,393 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Ended with exit code 0 [2024-09-12 18:21:35,581 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,53 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:21:35,581 INFO L399 AbstractCegarLoop]: === Iteration 72 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [correct_versionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, correct_versionErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, correct_versionErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-09-12 18:21:35,582 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:21:35,582 INFO L85 PathProgramCache]: Analyzing trace with hash -1609714105, now seen corresponding path program 9 times [2024-09-12 18:21:35,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:21:35,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314329794] [2024-09-12 18:21:35,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:21:35,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:21:35,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:21:35,635 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:21:35,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:21:35,637 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-12 18:21:35,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:21:35,727 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-12 18:21:35,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:21:35,824 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-12 18:21:35,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:21:35,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314329794] [2024-09-12 18:21:35,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314329794] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:21:35,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1192903299] [2024-09-12 18:21:35,825 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-12 18:21:35,825 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:21:35,825 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:21:35,827 INFO L229 MonitoredProcess]: Starting monitored process 54 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 18:21:35,827 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2024-09-12 18:21:35,876 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-09-12 18:21:35,876 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 18:21:35,877 INFO L262 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-09-12 18:21:35,879 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:21:36,122 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-12 18:21:36,122 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:21:36,459 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 16 proven. 36 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-12 18:21:36,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1192903299] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:21:36,459 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:21:36,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13, 13] total 31 [2024-09-12 18:21:36,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084476774] [2024-09-12 18:21:36,460 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:21:36,460 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-09-12 18:21:36,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:21:36,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-09-12 18:21:36,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=828, Unknown=0, NotChecked=0, Total=930 [2024-09-12 18:21:36,461 INFO L87 Difference]: Start difference. First operand 2134 states and 2389 transitions. Second operand has 31 states, 31 states have (on average 5.548387096774194) internal successors, (172), 31 states have internal predecessors, (172), 3 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-12 18:21:38,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:21:38,167 INFO L93 Difference]: Finished difference Result 2217 states and 2482 transitions. [2024-09-12 18:21:38,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-09-12 18:21:38,168 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 5.548387096774194) internal successors, (172), 31 states have internal predecessors, (172), 3 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 83 [2024-09-12 18:21:38,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:21:38,172 INFO L225 Difference]: With dead ends: 2217 [2024-09-12 18:21:38,173 INFO L226 Difference]: Without dead ends: 2137 [2024-09-12 18:21:38,173 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 152 SyntacticMatches, 3 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=162, Invalid=1320, Unknown=0, NotChecked=0, Total=1482 [2024-09-12 18:21:38,173 INFO L434 NwaCegarLoop]: 67 mSDtfsCounter, 29 mSDsluCounter, 1287 mSDsCounter, 0 mSdLazyCounter, 850 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 1354 SdHoareTripleChecker+Invalid, 856 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 850 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-12 18:21:38,174 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 1354 Invalid, 856 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 850 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-12 18:21:38,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2137 states. [2024-09-12 18:21:39,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2137 to 2080. [2024-09-12 18:21:39,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2080 states, 2034 states have (on average 1.1263520157325466) internal successors, (2291), 2051 states have internal predecessors, (2291), 15 states have call successors, (15), 15 states have call predecessors, (15), 23 states have return successors, (23), 13 states have call predecessors, (23), 13 states have call successors, (23) [2024-09-12 18:21:39,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2080 states to 2080 states and 2329 transitions. [2024-09-12 18:21:39,351 INFO L78 Accepts]: Start accepts. Automaton has 2080 states and 2329 transitions. Word has length 83 [2024-09-12 18:21:39,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:21:39,351 INFO L474 AbstractCegarLoop]: Abstraction has 2080 states and 2329 transitions. [2024-09-12 18:21:39,351 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 5.548387096774194) internal successors, (172), 31 states have internal predecessors, (172), 3 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-12 18:21:39,351 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:21:39,352 INFO L276 IsEmpty]: Start isEmpty. Operand 2080 states and 2329 transitions. [2024-09-12 18:21:39,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-09-12 18:21:39,353 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:21:39,353 INFO L216 NwaCegarLoop]: trace histogram [9, 9, 8, 8, 8, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:21:39,366 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Ended with exit code 0 [2024-09-12 18:21:39,553 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,54 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:21:39,554 INFO L399 AbstractCegarLoop]: === Iteration 73 === Targeting correct_versionErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [correct_versionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, correct_versionErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, correct_versionErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-09-12 18:21:39,554 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:21:39,554 INFO L85 PathProgramCache]: Analyzing trace with hash 264828783, now seen corresponding path program 7 times [2024-09-12 18:21:39,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:21:39,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863917600] [2024-09-12 18:21:39,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:21:39,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:21:39,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:21:39,641 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:21:39,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:21:39,643 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 0 proven. 165 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-09-12 18:21:39,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:21:39,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863917600] [2024-09-12 18:21:39,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863917600] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:21:39,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1832468917] [2024-09-12 18:21:39,643 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-12 18:21:39,643 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:21:39,643 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:21:39,644 INFO L229 MonitoredProcess]: Starting monitored process 55 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 18:21:39,645 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2024-09-12 18:21:39,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:21:39,690 INFO L262 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-09-12 18:21:39,691 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:21:39,834 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 143 proven. 55 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-09-12 18:21:39,835 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:21:39,968 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 143 proven. 55 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-09-12 18:21:39,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1832468917] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:21:39,968 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:21:39,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14, 14] total 31 [2024-09-12 18:21:39,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368165105] [2024-09-12 18:21:39,969 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:21:39,969 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-09-12 18:21:39,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:21:39,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-09-12 18:21:39,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=789, Unknown=0, NotChecked=0, Total=930 [2024-09-12 18:21:39,970 INFO L87 Difference]: Start difference. First operand 2080 states and 2329 transitions. Second operand has 31 states, 31 states have (on average 4.935483870967742) internal successors, (153), 31 states have internal predecessors, (153), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:21:42,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:21:42,679 INFO L93 Difference]: Finished difference Result 3165 states and 3547 transitions. [2024-09-12 18:21:42,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2024-09-12 18:21:42,680 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.935483870967742) internal successors, (153), 31 states have internal predecessors, (153), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 84 [2024-09-12 18:21:42,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:21:42,685 INFO L225 Difference]: With dead ends: 3165 [2024-09-12 18:21:42,685 INFO L226 Difference]: Without dead ends: 2431 [2024-09-12 18:21:42,687 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 146 SyntacticMatches, 6 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2452 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1422, Invalid=6768, Unknown=0, NotChecked=0, Total=8190 [2024-09-12 18:21:42,688 INFO L434 NwaCegarLoop]: 66 mSDtfsCounter, 459 mSDsluCounter, 928 mSDsCounter, 0 mSdLazyCounter, 961 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 459 SdHoareTripleChecker+Valid, 994 SdHoareTripleChecker+Invalid, 968 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 961 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-12 18:21:42,688 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [459 Valid, 994 Invalid, 968 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 961 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-12 18:21:42,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2431 states. [2024-09-12 18:21:44,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2431 to 2296. [2024-09-12 18:21:44,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2296 states, 2250 states have (on average 1.1266666666666667) internal successors, (2535), 2267 states have internal predecessors, (2535), 15 states have call successors, (15), 15 states have call predecessors, (15), 23 states have return successors, (23), 13 states have call predecessors, (23), 13 states have call successors, (23) [2024-09-12 18:21:44,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2296 states to 2296 states and 2573 transitions. [2024-09-12 18:21:44,103 INFO L78 Accepts]: Start accepts. Automaton has 2296 states and 2573 transitions. Word has length 84 [2024-09-12 18:21:44,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:21:44,103 INFO L474 AbstractCegarLoop]: Abstraction has 2296 states and 2573 transitions. [2024-09-12 18:21:44,104 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 4.935483870967742) internal successors, (153), 31 states have internal predecessors, (153), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:21:44,104 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:21:44,104 INFO L276 IsEmpty]: Start isEmpty. Operand 2296 states and 2573 transitions. [2024-09-12 18:21:44,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-09-12 18:21:44,105 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:21:44,106 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1] [2024-09-12 18:21:44,120 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Ended with exit code 0 [2024-09-12 18:21:44,306 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72,55 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:21:44,306 INFO L399 AbstractCegarLoop]: === Iteration 74 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [correct_versionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, correct_versionErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, correct_versionErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-09-12 18:21:44,306 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:21:44,306 INFO L85 PathProgramCache]: Analyzing trace with hash -708914844, now seen corresponding path program 10 times [2024-09-12 18:21:44,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:21:44,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603253712] [2024-09-12 18:21:44,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:21:44,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:21:44,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:21:44,411 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:21:44,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:21:44,412 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-12 18:21:44,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:21:44,484 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-12 18:21:44,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:21:44,590 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-12 18:21:44,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:21:44,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603253712] [2024-09-12 18:21:44,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603253712] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:21:44,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1211380595] [2024-09-12 18:21:44,591 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-12 18:21:44,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:21:44,591 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:21:44,592 INFO L229 MonitoredProcess]: Starting monitored process 56 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 18:21:44,593 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2024-09-12 18:21:44,639 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-12 18:21:44,639 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 18:21:44,640 INFO L262 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-09-12 18:21:44,641 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:21:44,796 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-12 18:21:44,796 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:21:44,903 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-12 18:21:44,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1211380595] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:21:44,903 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:21:44,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 30 [2024-09-12 18:21:44,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685833220] [2024-09-12 18:21:44,903 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:21:44,904 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-09-12 18:21:44,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:21:44,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-09-12 18:21:44,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=803, Unknown=0, NotChecked=0, Total=870 [2024-09-12 18:21:44,904 INFO L87 Difference]: Start difference. First operand 2296 states and 2573 transitions. Second operand has 30 states, 25 states have (on average 3.64) internal successors, (91), 25 states have internal predecessors, (91), 4 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2024-09-12 18:21:46,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:21:46,832 INFO L93 Difference]: Finished difference Result 2403 states and 2690 transitions. [2024-09-12 18:21:46,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-09-12 18:21:46,832 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 25 states have (on average 3.64) internal successors, (91), 25 states have internal predecessors, (91), 4 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) Word has length 88 [2024-09-12 18:21:46,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:21:46,838 INFO L225 Difference]: With dead ends: 2403 [2024-09-12 18:21:46,838 INFO L226 Difference]: Without dead ends: 2348 [2024-09-12 18:21:46,838 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 173 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=93, Invalid=1167, Unknown=0, NotChecked=0, Total=1260 [2024-09-12 18:21:46,838 INFO L434 NwaCegarLoop]: 121 mSDtfsCounter, 104 mSDsluCounter, 3076 mSDsCounter, 0 mSdLazyCounter, 1701 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 3197 SdHoareTripleChecker+Invalid, 1703 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1701 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-12 18:21:46,839 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 3197 Invalid, 1703 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1701 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-12 18:21:46,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2348 states. [2024-09-12 18:21:48,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2348 to 2275. [2024-09-12 18:21:48,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2275 states, 2232 states have (on average 1.1258960573476702) internal successors, (2513), 2248 states have internal predecessors, (2513), 14 states have call successors, (14), 14 states have call predecessors, (14), 21 states have return successors, (21), 12 states have call predecessors, (21), 12 states have call successors, (21) [2024-09-12 18:21:48,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2275 states to 2275 states and 2548 transitions. [2024-09-12 18:21:48,238 INFO L78 Accepts]: Start accepts. Automaton has 2275 states and 2548 transitions. Word has length 88 [2024-09-12 18:21:48,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:21:48,238 INFO L474 AbstractCegarLoop]: Abstraction has 2275 states and 2548 transitions. [2024-09-12 18:21:48,238 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 25 states have (on average 3.64) internal successors, (91), 25 states have internal predecessors, (91), 4 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2024-09-12 18:21:48,239 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:21:48,239 INFO L276 IsEmpty]: Start isEmpty. Operand 2275 states and 2548 transitions. [2024-09-12 18:21:48,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-09-12 18:21:48,241 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:21:48,241 INFO L216 NwaCegarLoop]: trace histogram [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, 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] [2024-09-12 18:21:48,253 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Forceful destruction successful, exit code 0 [2024-09-12 18:21:48,441 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73,56 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:21:48,441 INFO L399 AbstractCegarLoop]: === Iteration 75 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [correct_versionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, correct_versionErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, correct_versionErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-09-12 18:21:48,442 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:21:48,442 INFO L85 PathProgramCache]: Analyzing trace with hash 673509476, now seen corresponding path program 11 times [2024-09-12 18:21:48,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:21:48,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032658969] [2024-09-12 18:21:48,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:21:48,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:21:48,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:21:48,530 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:21:48,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:21:48,531 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-12 18:21:48,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:21:48,603 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-12 18:21:48,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:21:48,734 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-09-12 18:21:48,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:21:48,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032658969] [2024-09-12 18:21:48,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032658969] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:21:48,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1300688270] [2024-09-12 18:21:48,735 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-12 18:21:48,735 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:21:48,735 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:21:48,737 INFO L229 MonitoredProcess]: Starting monitored process 57 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 18:21:48,737 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2024-09-12 18:21:48,794 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-09-12 18:21:48,794 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 18:21:48,795 INFO L262 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-09-12 18:21:48,797 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:21:48,987 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-09-12 18:21:48,987 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:21:49,068 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-09-12 18:21:49,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1300688270] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:21:49,068 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:21:49,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 30 [2024-09-12 18:21:49,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317041523] [2024-09-12 18:21:49,068 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:21:49,069 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-09-12 18:21:49,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:21:49,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-09-12 18:21:49,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=799, Unknown=0, NotChecked=0, Total=870 [2024-09-12 18:21:49,069 INFO L87 Difference]: Start difference. First operand 2275 states and 2548 transitions. Second operand has 30 states, 25 states have (on average 3.64) internal successors, (91), 25 states have internal predecessors, (91), 4 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2024-09-12 18:21:50,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:21:50,864 INFO L93 Difference]: Finished difference Result 2323 states and 2598 transitions. [2024-09-12 18:21:50,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-09-12 18:21:50,864 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 25 states have (on average 3.64) internal successors, (91), 25 states have internal predecessors, (91), 4 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) Word has length 88 [2024-09-12 18:21:50,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:21:50,870 INFO L225 Difference]: With dead ends: 2323 [2024-09-12 18:21:50,870 INFO L226 Difference]: Without dead ends: 2263 [2024-09-12 18:21:50,870 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=97, Invalid=1163, Unknown=0, NotChecked=0, Total=1260 [2024-09-12 18:21:50,871 INFO L434 NwaCegarLoop]: 85 mSDtfsCounter, 66 mSDsluCounter, 1833 mSDsCounter, 0 mSdLazyCounter, 979 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 1918 SdHoareTripleChecker+Invalid, 981 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 979 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-12 18:21:50,871 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 1918 Invalid, 981 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 979 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-12 18:21:50,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2263 states. [2024-09-12 18:21:52,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2263 to 2236. [2024-09-12 18:21:52,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2236 states, 2196 states have (on average 1.1270491803278688) internal successors, (2475), 2211 states have internal predecessors, (2475), 13 states have call successors, (13), 13 states have call predecessors, (13), 19 states have return successors, (19), 11 states have call predecessors, (19), 11 states have call successors, (19) [2024-09-12 18:21:52,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2236 states to 2236 states and 2507 transitions. [2024-09-12 18:21:52,261 INFO L78 Accepts]: Start accepts. Automaton has 2236 states and 2507 transitions. Word has length 88 [2024-09-12 18:21:52,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:21:52,261 INFO L474 AbstractCegarLoop]: Abstraction has 2236 states and 2507 transitions. [2024-09-12 18:21:52,261 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 25 states have (on average 3.64) internal successors, (91), 25 states have internal predecessors, (91), 4 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2024-09-12 18:21:52,261 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:21:52,261 INFO L276 IsEmpty]: Start isEmpty. Operand 2236 states and 2507 transitions. [2024-09-12 18:21:52,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-09-12 18:21:52,263 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:21:52,263 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1] [2024-09-12 18:21:52,276 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Ended with exit code 0 [2024-09-12 18:21:52,464 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable74 [2024-09-12 18:21:52,464 INFO L399 AbstractCegarLoop]: === Iteration 76 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [correct_versionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, correct_versionErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, correct_versionErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-09-12 18:21:52,464 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:21:52,464 INFO L85 PathProgramCache]: Analyzing trace with hash 1229521667, now seen corresponding path program 12 times [2024-09-12 18:21:52,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:21:52,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119574505] [2024-09-12 18:21:52,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:21:52,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:21:52,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:21:52,509 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:21:52,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:21:52,511 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-12 18:21:52,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:21:52,596 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-12 18:21:52,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:21:52,678 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-09-12 18:21:52,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:21:52,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119574505] [2024-09-12 18:21:52,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119574505] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:21:52,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1750824408] [2024-09-12 18:21:52,679 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-12 18:21:52,679 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:21:52,679 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:21:52,681 INFO L229 MonitoredProcess]: Starting monitored process 58 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 18:21:52,682 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2024-09-12 18:21:52,729 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-09-12 18:21:52,729 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 18:21:52,730 INFO L262 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-09-12 18:21:52,731 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:21:52,887 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-09-12 18:21:52,887 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:21:53,137 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-09-12 18:21:53,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1750824408] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:21:53,137 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:21:53,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 11] total 26 [2024-09-12 18:21:53,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463165591] [2024-09-12 18:21:53,138 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:21:53,138 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-09-12 18:21:53,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:21:53,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-09-12 18:21:53,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=564, Unknown=0, NotChecked=0, Total=650 [2024-09-12 18:21:53,139 INFO L87 Difference]: Start difference. First operand 2236 states and 2507 transitions. Second operand has 26 states, 26 states have (on average 4.769230769230769) internal successors, (124), 26 states have internal predecessors, (124), 3 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-12 18:21:54,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:21:54,796 INFO L93 Difference]: Finished difference Result 2258 states and 2524 transitions. [2024-09-12 18:21:54,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-09-12 18:21:54,796 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.769230769230769) internal successors, (124), 26 states have internal predecessors, (124), 3 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 88 [2024-09-12 18:21:54,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:21:54,803 INFO L225 Difference]: With dead ends: 2258 [2024-09-12 18:21:54,803 INFO L226 Difference]: Without dead ends: 2128 [2024-09-12 18:21:54,804 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 166 SyntacticMatches, 3 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=122, Invalid=808, Unknown=0, NotChecked=0, Total=930 [2024-09-12 18:21:54,804 INFO L434 NwaCegarLoop]: 68 mSDtfsCounter, 55 mSDsluCounter, 664 mSDsCounter, 0 mSdLazyCounter, 375 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 732 SdHoareTripleChecker+Invalid, 380 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 375 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 18:21:54,804 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 732 Invalid, 380 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 375 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 18:21:54,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2128 states. [2024-09-12 18:21:56,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2128 to 2122. [2024-09-12 18:21:56,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2122 states, 2082 states have (on average 1.1311239193083573) internal successors, (2355), 2097 states have internal predecessors, (2355), 13 states have call successors, (13), 13 states have call predecessors, (13), 19 states have return successors, (19), 11 states have call predecessors, (19), 11 states have call successors, (19) [2024-09-12 18:21:56,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2122 states to 2122 states and 2387 transitions. [2024-09-12 18:21:56,149 INFO L78 Accepts]: Start accepts. Automaton has 2122 states and 2387 transitions. Word has length 88 [2024-09-12 18:21:56,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:21:56,149 INFO L474 AbstractCegarLoop]: Abstraction has 2122 states and 2387 transitions. [2024-09-12 18:21:56,149 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 4.769230769230769) internal successors, (124), 26 states have internal predecessors, (124), 3 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-12 18:21:56,149 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:21:56,149 INFO L276 IsEmpty]: Start isEmpty. Operand 2122 states and 2387 transitions. [2024-09-12 18:21:56,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-09-12 18:21:56,151 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:21:56,151 INFO L216 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 6, 3, 3, 3, 3, 3, 3, 3, 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] [2024-09-12 18:21:56,163 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Ended with exit code 0 [2024-09-12 18:21:56,351 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75,58 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:21:56,351 INFO L399 AbstractCegarLoop]: === Iteration 77 === Targeting student_versionErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [correct_versionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, correct_versionErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, correct_versionErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-09-12 18:21:56,352 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:21:56,352 INFO L85 PathProgramCache]: Analyzing trace with hash -950873570, now seen corresponding path program 4 times [2024-09-12 18:21:56,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:21:56,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516894701] [2024-09-12 18:21:56,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:21:56,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:21:56,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:21:56,409 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:21:56,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:21:56,410 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-12 18:21:56,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:21:56,413 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-09-12 18:21:56,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:21:56,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516894701] [2024-09-12 18:21:56,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516894701] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:21:56,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [466942955] [2024-09-12 18:21:56,414 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-12 18:21:56,414 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:21:56,414 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:21:56,415 INFO L229 MonitoredProcess]: Starting monitored process 59 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 18:21:56,416 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2024-09-12 18:21:56,461 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-12 18:21:56,461 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 18:21:56,462 INFO L262 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-09-12 18:21:56,463 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:21:56,639 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 60 proven. 36 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-09-12 18:21:56,640 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:21:56,879 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 60 proven. 36 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-09-12 18:21:56,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [466942955] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:21:56,879 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:21:56,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 13, 13] total 28 [2024-09-12 18:21:56,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762898831] [2024-09-12 18:21:56,879 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:21:56,879 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-09-12 18:21:56,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:21:56,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-09-12 18:21:56,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=670, Unknown=0, NotChecked=0, Total=756 [2024-09-12 18:21:56,880 INFO L87 Difference]: Start difference. First operand 2122 states and 2387 transitions. Second operand has 28 states, 28 states have (on average 5.357142857142857) internal successors, (150), 27 states have internal predecessors, (150), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-09-12 18:21:59,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:21:59,328 INFO L93 Difference]: Finished difference Result 4190 states and 4762 transitions. [2024-09-12 18:21:59,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-09-12 18:21:59,328 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 5.357142857142857) internal successors, (150), 27 states have internal predecessors, (150), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 87 [2024-09-12 18:21:59,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:21:59,336 INFO L225 Difference]: With dead ends: 4190 [2024-09-12 18:21:59,336 INFO L226 Difference]: Without dead ends: 3793 [2024-09-12 18:21:59,338 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 156 SyntacticMatches, 3 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 267 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=274, Invalid=1532, Unknown=0, NotChecked=0, Total=1806 [2024-09-12 18:21:59,338 INFO L434 NwaCegarLoop]: 59 mSDtfsCounter, 269 mSDsluCounter, 962 mSDsCounter, 0 mSdLazyCounter, 622 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 1021 SdHoareTripleChecker+Invalid, 630 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 622 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 18:21:59,338 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [270 Valid, 1021 Invalid, 630 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 622 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 18:21:59,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3793 states. [2024-09-12 18:22:00,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3793 to 2512. [2024-09-12 18:22:00,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2512 states, 2457 states have (on average 1.1326821326821326) internal successors, (2783), 2477 states have internal predecessors, (2783), 18 states have call successors, (18), 18 states have call predecessors, (18), 29 states have return successors, (29), 16 states have call predecessors, (29), 16 states have call successors, (29) [2024-09-12 18:22:00,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2512 states to 2512 states and 2830 transitions. [2024-09-12 18:22:00,906 INFO L78 Accepts]: Start accepts. Automaton has 2512 states and 2830 transitions. Word has length 87 [2024-09-12 18:22:00,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:22:00,906 INFO L474 AbstractCegarLoop]: Abstraction has 2512 states and 2830 transitions. [2024-09-12 18:22:00,906 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 5.357142857142857) internal successors, (150), 27 states have internal predecessors, (150), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-09-12 18:22:00,907 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:22:00,907 INFO L276 IsEmpty]: Start isEmpty. Operand 2512 states and 2830 transitions. [2024-09-12 18:22:00,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-09-12 18:22:00,908 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:22:00,909 INFO L216 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 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 18:22:00,921 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Ended with exit code 0 [2024-09-12 18:22:01,109 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable76 [2024-09-12 18:22:01,109 INFO L399 AbstractCegarLoop]: === Iteration 78 === Targeting student_versionErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [correct_versionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, correct_versionErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, correct_versionErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-09-12 18:22:01,110 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:22:01,110 INFO L85 PathProgramCache]: Analyzing trace with hash -674570458, now seen corresponding path program 3 times [2024-09-12 18:22:01,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:22:01,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444179100] [2024-09-12 18:22:01,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:22:01,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:22:01,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:22:01,156 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:22:01,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:22:01,157 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-12 18:22:01,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:22:01,161 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2024-09-12 18:22:01,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:22:01,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444179100] [2024-09-12 18:22:01,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444179100] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:22:01,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2011058805] [2024-09-12 18:22:01,161 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-12 18:22:01,161 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:22:01,161 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:22:01,162 INFO L229 MonitoredProcess]: Starting monitored process 60 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 18:22:01,163 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2024-09-12 18:22:01,220 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-09-12 18:22:01,220 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 18:22:01,221 INFO L262 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-09-12 18:22:01,223 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:22:01,506 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 20 proven. 110 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-09-12 18:22:01,506 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:22:01,936 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 20 proven. 110 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-09-12 18:22:01,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2011058805] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:22:01,937 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:22:01,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 17, 17] total 35 [2024-09-12 18:22:01,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124135994] [2024-09-12 18:22:01,937 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:22:01,937 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-09-12 18:22:01,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:22:01,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-09-12 18:22:01,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=1090, Unknown=0, NotChecked=0, Total=1190 [2024-09-12 18:22:01,938 INFO L87 Difference]: Start difference. First operand 2512 states and 2830 transitions. Second operand has 35 states, 35 states have (on average 5.914285714285715) internal successors, (207), 34 states have internal predecessors, (207), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-09-12 18:22:04,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:22:04,853 INFO L93 Difference]: Finished difference Result 3434 states and 3883 transitions. [2024-09-12 18:22:04,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-09-12 18:22:04,854 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 5.914285714285715) internal successors, (207), 34 states have internal predecessors, (207), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 88 [2024-09-12 18:22:04,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:22:04,861 INFO L225 Difference]: With dead ends: 3434 [2024-09-12 18:22:04,861 INFO L226 Difference]: Without dead ends: 3281 [2024-09-12 18:22:04,862 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 150 SyntacticMatches, 3 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 532 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=431, Invalid=3109, Unknown=0, NotChecked=0, Total=3540 [2024-09-12 18:22:04,863 INFO L434 NwaCegarLoop]: 52 mSDtfsCounter, 223 mSDsluCounter, 1059 mSDsCounter, 0 mSdLazyCounter, 1327 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 1111 SdHoareTripleChecker+Invalid, 1341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-12 18:22:04,863 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [225 Valid, 1111 Invalid, 1341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1327 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-12 18:22:04,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3281 states. [2024-09-12 18:22:06,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3281 to 2968. [2024-09-12 18:22:06,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2968 states, 2901 states have (on average 1.1285763529817305) internal successors, (3274), 2925 states have internal predecessors, (3274), 22 states have call successors, (22), 22 states have call predecessors, (22), 37 states have return successors, (37), 20 states have call predecessors, (37), 20 states have call successors, (37) [2024-09-12 18:22:06,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2968 states to 2968 states and 3333 transitions. [2024-09-12 18:22:06,770 INFO L78 Accepts]: Start accepts. Automaton has 2968 states and 3333 transitions. Word has length 88 [2024-09-12 18:22:06,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:22:06,770 INFO L474 AbstractCegarLoop]: Abstraction has 2968 states and 3333 transitions. [2024-09-12 18:22:06,771 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 5.914285714285715) internal successors, (207), 34 states have internal predecessors, (207), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-09-12 18:22:06,771 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:22:06,771 INFO L276 IsEmpty]: Start isEmpty. Operand 2968 states and 3333 transitions. [2024-09-12 18:22:06,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-09-12 18:22:06,773 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:22:06,773 INFO L216 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:22:06,785 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Ended with exit code 0 [2024-09-12 18:22:06,973 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77,60 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:22:06,974 INFO L399 AbstractCegarLoop]: === Iteration 79 === Targeting correct_versionErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [correct_versionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, correct_versionErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, correct_versionErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-09-12 18:22:06,974 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:22:06,974 INFO L85 PathProgramCache]: Analyzing trace with hash 1939519073, now seen corresponding path program 8 times [2024-09-12 18:22:06,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:22:06,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122247454] [2024-09-12 18:22:06,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:22:06,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:22:06,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:22:07,068 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:22:07,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:22:07,070 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 172 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-09-12 18:22:07,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:22:07,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122247454] [2024-09-12 18:22:07,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122247454] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:22:07,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2028510689] [2024-09-12 18:22:07,070 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 18:22:07,070 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:22:07,071 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:22:07,071 INFO L229 MonitoredProcess]: Starting monitored process 61 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 18:22:07,072 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2024-09-12 18:22:07,117 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 18:22:07,117 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 18:22:07,118 INFO L262 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-09-12 18:22:07,119 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:22:07,214 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 172 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-09-12 18:22:07,214 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:22:07,402 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 172 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-09-12 18:22:07,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2028510689] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:22:07,403 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:22:07,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 32 [2024-09-12 18:22:07,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124258479] [2024-09-12 18:22:07,403 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:22:07,406 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-09-12 18:22:07,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:22:07,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-09-12 18:22:07,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=320, Invalid=736, Unknown=0, NotChecked=0, Total=1056 [2024-09-12 18:22:07,407 INFO L87 Difference]: Start difference. First operand 2968 states and 3333 transitions. Second operand has 33 states, 32 states have (on average 5.25) internal successors, (168), 33 states have internal predecessors, (168), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:22:13,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:22:13,426 INFO L93 Difference]: Finished difference Result 4467 states and 5011 transitions. [2024-09-12 18:22:13,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 135 states. [2024-09-12 18:22:13,426 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 32 states have (on average 5.25) internal successors, (168), 33 states have internal predecessors, (168), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 89 [2024-09-12 18:22:13,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:22:13,434 INFO L225 Difference]: With dead ends: 4467 [2024-09-12 18:22:13,434 INFO L226 Difference]: Without dead ends: 4466 [2024-09-12 18:22:13,436 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8964 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=6732, Invalid=13860, Unknown=0, NotChecked=0, Total=20592 [2024-09-12 18:22:13,436 INFO L434 NwaCegarLoop]: 68 mSDtfsCounter, 2254 mSDsluCounter, 661 mSDsCounter, 0 mSdLazyCounter, 314 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2254 SdHoareTripleChecker+Valid, 729 SdHoareTripleChecker+Invalid, 374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 18:22:13,436 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [2254 Valid, 729 Invalid, 374 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 314 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 18:22:13,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4466 states. [2024-09-12 18:22:15,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4466 to 3056. [2024-09-12 18:22:15,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3056 states, 2989 states have (on average 1.1308129809300769) internal successors, (3380), 3013 states have internal predecessors, (3380), 22 states have call successors, (22), 22 states have call predecessors, (22), 37 states have return successors, (37), 20 states have call predecessors, (37), 20 states have call successors, (37) [2024-09-12 18:22:15,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3056 states to 3056 states and 3439 transitions. [2024-09-12 18:22:15,495 INFO L78 Accepts]: Start accepts. Automaton has 3056 states and 3439 transitions. Word has length 89 [2024-09-12 18:22:15,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:22:15,496 INFO L474 AbstractCegarLoop]: Abstraction has 3056 states and 3439 transitions. [2024-09-12 18:22:15,496 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 32 states have (on average 5.25) internal successors, (168), 33 states have internal predecessors, (168), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:22:15,496 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:22:15,496 INFO L276 IsEmpty]: Start isEmpty. Operand 3056 states and 3439 transitions. [2024-09-12 18:22:15,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-09-12 18:22:15,498 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:22:15,498 INFO L216 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1] [2024-09-12 18:22:15,512 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Ended with exit code 0 [2024-09-12 18:22:15,699 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable78 [2024-09-12 18:22:15,699 INFO L399 AbstractCegarLoop]: === Iteration 80 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [correct_versionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, correct_versionErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, correct_versionErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-09-12 18:22:15,700 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:22:15,700 INFO L85 PathProgramCache]: Analyzing trace with hash 110092494, now seen corresponding path program 13 times [2024-09-12 18:22:15,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:22:15,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316691755] [2024-09-12 18:22:15,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:22:15,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:22:15,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:22:15,753 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:22:15,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:22:15,754 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-12 18:22:15,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:22:15,857 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-12 18:22:15,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:22:15,980 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 89 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-12 18:22:15,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:22:15,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316691755] [2024-09-12 18:22:15,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316691755] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:22:15,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1535289063] [2024-09-12 18:22:15,981 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-12 18:22:15,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:22:15,981 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:22:15,983 INFO L229 MonitoredProcess]: Starting monitored process 62 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 18:22:15,984 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2024-09-12 18:22:16,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:22:16,038 INFO L262 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-09-12 18:22:16,039 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:22:16,396 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 89 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-12 18:22:16,396 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:22:16,854 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 21 proven. 68 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-12 18:22:16,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1535289063] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:22:16,854 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:22:16,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 15, 15] total 37 [2024-09-12 18:22:16,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820398843] [2024-09-12 18:22:16,855 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:22:16,855 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-09-12 18:22:16,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:22:16,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-09-12 18:22:16,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=1208, Unknown=0, NotChecked=0, Total=1332 [2024-09-12 18:22:16,856 INFO L87 Difference]: Start difference. First operand 3056 states and 3439 transitions. Second operand has 37 states, 37 states have (on average 5.45945945945946) internal successors, (202), 37 states have internal predecessors, (202), 3 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-12 18:22:19,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:22:19,537 INFO L93 Difference]: Finished difference Result 3171 states and 3578 transitions. [2024-09-12 18:22:19,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-09-12 18:22:19,538 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 5.45945945945946) internal successors, (202), 37 states have internal predecessors, (202), 3 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 93 [2024-09-12 18:22:19,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:22:19,545 INFO L225 Difference]: With dead ends: 3171 [2024-09-12 18:22:19,545 INFO L226 Difference]: Without dead ends: 3111 [2024-09-12 18:22:19,546 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 168 SyntacticMatches, 3 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 291 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=211, Invalid=2045, Unknown=0, NotChecked=0, Total=2256 [2024-09-12 18:22:19,546 INFO L434 NwaCegarLoop]: 71 mSDtfsCounter, 35 mSDsluCounter, 1431 mSDsCounter, 0 mSdLazyCounter, 1028 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 1502 SdHoareTripleChecker+Invalid, 1036 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1028 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-12 18:22:19,546 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 1502 Invalid, 1036 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1028 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-12 18:22:19,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3111 states. [2024-09-12 18:22:21,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3111 to 3002. [2024-09-12 18:22:21,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3002 states, 2935 states have (on average 1.1318568994889266) internal successors, (3322), 2959 states have internal predecessors, (3322), 22 states have call successors, (22), 22 states have call predecessors, (22), 37 states have return successors, (37), 20 states have call predecessors, (37), 20 states have call successors, (37) [2024-09-12 18:22:21,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3002 states to 3002 states and 3381 transitions. [2024-09-12 18:22:21,615 INFO L78 Accepts]: Start accepts. Automaton has 3002 states and 3381 transitions. Word has length 93 [2024-09-12 18:22:21,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:22:21,615 INFO L474 AbstractCegarLoop]: Abstraction has 3002 states and 3381 transitions. [2024-09-12 18:22:21,615 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 5.45945945945946) internal successors, (202), 37 states have internal predecessors, (202), 3 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-12 18:22:21,615 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:22:21,615 INFO L276 IsEmpty]: Start isEmpty. Operand 3002 states and 3381 transitions. [2024-09-12 18:22:21,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-09-12 18:22:21,617 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:22:21,617 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:22:21,630 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Forceful destruction successful, exit code 0 [2024-09-12 18:22:21,818 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79,62 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:22:21,818 INFO L399 AbstractCegarLoop]: === Iteration 81 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [correct_versionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, correct_versionErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, correct_versionErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-09-12 18:22:21,818 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:22:21,818 INFO L85 PathProgramCache]: Analyzing trace with hash 1805877973, now seen corresponding path program 14 times [2024-09-12 18:22:21,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:22:21,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81349725] [2024-09-12 18:22:21,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:22:21,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:22:21,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:22:21,849 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:22:21,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:22:21,850 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-12 18:22:21,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:22:21,853 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-12 18:22:21,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:22:21,897 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 18 proven. 7 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-09-12 18:22:21,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:22:21,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81349725] [2024-09-12 18:22:21,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81349725] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:22:21,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1292716998] [2024-09-12 18:22:21,897 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 18:22:21,897 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:22:21,897 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:22:21,899 INFO L229 MonitoredProcess]: Starting monitored process 63 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 18:22:21,900 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2024-09-12 18:22:21,957 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 18:22:21,958 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 18:22:21,959 INFO L262 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-09-12 18:22:21,960 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:22:22,021 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 18 proven. 7 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-09-12 18:22:22,021 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:22:22,080 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 18 proven. 7 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-09-12 18:22:22,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1292716998] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:22:22,080 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:22:22,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 12 [2024-09-12 18:22:22,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224393138] [2024-09-12 18:22:22,081 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:22:22,081 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-09-12 18:22:22,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:22:22,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-09-12 18:22:22,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=81, Unknown=0, NotChecked=0, Total=132 [2024-09-12 18:22:22,082 INFO L87 Difference]: Start difference. First operand 3002 states and 3381 transitions. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-09-12 18:22:24,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:22:24,225 INFO L93 Difference]: Finished difference Result 3037 states and 3410 transitions. [2024-09-12 18:22:24,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-09-12 18:22:24,226 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 93 [2024-09-12 18:22:24,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:22:24,232 INFO L225 Difference]: With dead ends: 3037 [2024-09-12 18:22:24,232 INFO L226 Difference]: Without dead ends: 3007 [2024-09-12 18:22:24,232 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 183 SyntacticMatches, 7 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=92, Invalid=148, Unknown=0, NotChecked=0, Total=240 [2024-09-12 18:22:24,232 INFO L434 NwaCegarLoop]: 79 mSDtfsCounter, 74 mSDsluCounter, 296 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 375 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 18:22:24,233 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 375 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 18:22:24,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3007 states. [2024-09-12 18:22:26,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3007 to 3002. [2024-09-12 18:22:26,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3002 states, 2935 states have (on average 1.1277683134582623) internal successors, (3310), 2959 states have internal predecessors, (3310), 22 states have call successors, (22), 22 states have call predecessors, (22), 37 states have return successors, (37), 20 states have call predecessors, (37), 20 states have call successors, (37) [2024-09-12 18:22:26,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3002 states to 3002 states and 3369 transitions. [2024-09-12 18:22:26,312 INFO L78 Accepts]: Start accepts. Automaton has 3002 states and 3369 transitions. Word has length 93 [2024-09-12 18:22:26,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:22:26,312 INFO L474 AbstractCegarLoop]: Abstraction has 3002 states and 3369 transitions. [2024-09-12 18:22:26,313 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-09-12 18:22:26,313 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:22:26,313 INFO L276 IsEmpty]: Start isEmpty. Operand 3002 states and 3369 transitions. [2024-09-12 18:22:26,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-09-12 18:22:26,315 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:22:26,315 INFO L216 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1] [2024-09-12 18:22:26,329 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Ended with exit code 0 [2024-09-12 18:22:26,516 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,63 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:22:26,516 INFO L399 AbstractCegarLoop]: === Iteration 82 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [correct_versionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, correct_versionErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, correct_versionErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-09-12 18:22:26,516 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:22:26,516 INFO L85 PathProgramCache]: Analyzing trace with hash -1033559235, now seen corresponding path program 15 times [2024-09-12 18:22:26,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:22:26,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930311777] [2024-09-12 18:22:26,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:22:26,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:22:26,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:22:26,618 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:22:26,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:22:26,620 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-12 18:22:26,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:22:26,700 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-12 18:22:26,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:22:26,823 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-12 18:22:26,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:22:26,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930311777] [2024-09-12 18:22:26,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930311777] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:22:26,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2070844533] [2024-09-12 18:22:26,823 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-12 18:22:26,823 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:22:26,823 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:22:26,824 INFO L229 MonitoredProcess]: Starting monitored process 64 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 18:22:26,825 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2024-09-12 18:22:26,879 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-09-12 18:22:26,879 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 18:22:26,881 INFO L262 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-09-12 18:22:26,882 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:22:27,033 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-12 18:22:27,034 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:22:27,172 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-12 18:22:27,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2070844533] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:22:27,173 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:22:27,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 26] total 32 [2024-09-12 18:22:27,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925015735] [2024-09-12 18:22:27,173 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:22:27,173 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-09-12 18:22:27,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:22:27,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-09-12 18:22:27,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=921, Unknown=0, NotChecked=0, Total=992 [2024-09-12 18:22:27,174 INFO L87 Difference]: Start difference. First operand 3002 states and 3369 transitions. Second operand has 32 states, 27 states have (on average 3.740740740740741) internal successors, (101), 27 states have internal predecessors, (101), 4 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2024-09-12 18:22:29,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:22:29,882 INFO L93 Difference]: Finished difference Result 3147 states and 3531 transitions. [2024-09-12 18:22:29,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-09-12 18:22:29,883 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 27 states have (on average 3.740740740740741) internal successors, (101), 27 states have internal predecessors, (101), 4 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) Word has length 98 [2024-09-12 18:22:29,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:22:29,890 INFO L225 Difference]: With dead ends: 3147 [2024-09-12 18:22:29,890 INFO L226 Difference]: Without dead ends: 3052 [2024-09-12 18:22:29,891 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 193 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=97, Invalid=1309, Unknown=0, NotChecked=0, Total=1406 [2024-09-12 18:22:29,891 INFO L434 NwaCegarLoop]: 142 mSDtfsCounter, 123 mSDsluCounter, 3492 mSDsCounter, 0 mSdLazyCounter, 1957 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 3634 SdHoareTripleChecker+Invalid, 1959 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1957 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-09-12 18:22:29,891 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 3634 Invalid, 1959 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1957 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-09-12 18:22:29,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3052 states. [2024-09-12 18:22:31,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3052 to 2950. [2024-09-12 18:22:31,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2950 states, 2886 states have (on average 1.1275121275121276) internal successors, (3254), 2909 states have internal predecessors, (3254), 21 states have call successors, (21), 21 states have call predecessors, (21), 35 states have return successors, (35), 19 states have call predecessors, (35), 19 states have call successors, (35) [2024-09-12 18:22:31,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2950 states to 2950 states and 3310 transitions. [2024-09-12 18:22:31,946 INFO L78 Accepts]: Start accepts. Automaton has 2950 states and 3310 transitions. Word has length 98 [2024-09-12 18:22:31,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:22:31,946 INFO L474 AbstractCegarLoop]: Abstraction has 2950 states and 3310 transitions. [2024-09-12 18:22:31,946 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 27 states have (on average 3.740740740740741) internal successors, (101), 27 states have internal predecessors, (101), 4 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2024-09-12 18:22:31,946 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:22:31,946 INFO L276 IsEmpty]: Start isEmpty. Operand 2950 states and 3310 transitions. [2024-09-12 18:22:31,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-09-12 18:22:31,949 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:22:31,949 INFO L216 NwaCegarLoop]: trace histogram [3, 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, 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 18:22:31,961 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Ended with exit code 0 [2024-09-12 18:22:32,149 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 64 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable81 [2024-09-12 18:22:32,150 INFO L399 AbstractCegarLoop]: === Iteration 83 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [correct_versionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, correct_versionErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, correct_versionErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-09-12 18:22:32,150 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:22:32,150 INFO L85 PathProgramCache]: Analyzing trace with hash 1578405769, now seen corresponding path program 16 times [2024-09-12 18:22:32,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:22:32,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286531428] [2024-09-12 18:22:32,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:22:32,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:22:32,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:22:32,245 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:22:32,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:22:32,247 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-12 18:22:32,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:22:32,332 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-12 18:22:32,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:22:32,440 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-09-12 18:22:32,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:22:32,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286531428] [2024-09-12 18:22:32,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286531428] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:22:32,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1920162576] [2024-09-12 18:22:32,441 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-12 18:22:32,441 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:22:32,441 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:22:32,443 INFO L229 MonitoredProcess]: Starting monitored process 65 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 18:22:32,443 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2024-09-12 18:22:32,495 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-12 18:22:32,495 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 18:22:32,496 INFO L262 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-09-12 18:22:32,498 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:22:32,681 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-09-12 18:22:32,681 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:22:32,795 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-09-12 18:22:32,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1920162576] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:22:32,795 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:22:32,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 32 [2024-09-12 18:22:32,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841488560] [2024-09-12 18:22:32,796 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:22:32,796 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-09-12 18:22:32,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:22:32,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-09-12 18:22:32,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=917, Unknown=0, NotChecked=0, Total=992 [2024-09-12 18:22:32,797 INFO L87 Difference]: Start difference. First operand 2950 states and 3310 transitions. Second operand has 32 states, 27 states have (on average 3.740740740740741) internal successors, (101), 27 states have internal predecessors, (101), 4 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2024-09-12 18:22:35,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:22:35,297 INFO L93 Difference]: Finished difference Result 3007 states and 3371 transitions. [2024-09-12 18:22:35,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-09-12 18:22:35,298 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 27 states have (on average 3.740740740740741) internal successors, (101), 27 states have internal predecessors, (101), 4 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) Word has length 98 [2024-09-12 18:22:35,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:22:35,304 INFO L225 Difference]: With dead ends: 3007 [2024-09-12 18:22:35,304 INFO L226 Difference]: Without dead ends: 2942 [2024-09-12 18:22:35,305 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 191 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=101, Invalid=1305, Unknown=0, NotChecked=0, Total=1406 [2024-09-12 18:22:35,305 INFO L434 NwaCegarLoop]: 106 mSDtfsCounter, 85 mSDsluCounter, 2481 mSDsCounter, 0 mSdLazyCounter, 1375 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 2587 SdHoareTripleChecker+Invalid, 1377 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1375 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-12 18:22:35,305 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 2587 Invalid, 1377 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1375 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-12 18:22:35,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2942 states. [2024-09-12 18:22:37,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2942 to 2892. [2024-09-12 18:22:37,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2892 states, 2831 states have (on average 1.128929706817379) internal successors, (3196), 2853 states have internal predecessors, (3196), 20 states have call successors, (20), 20 states have call predecessors, (20), 33 states have return successors, (33), 18 states have call predecessors, (33), 18 states have call successors, (33) [2024-09-12 18:22:37,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2892 states to 2892 states and 3249 transitions. [2024-09-12 18:22:37,320 INFO L78 Accepts]: Start accepts. Automaton has 2892 states and 3249 transitions. Word has length 98 [2024-09-12 18:22:37,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:22:37,320 INFO L474 AbstractCegarLoop]: Abstraction has 2892 states and 3249 transitions. [2024-09-12 18:22:37,320 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 27 states have (on average 3.740740740740741) internal successors, (101), 27 states have internal predecessors, (101), 4 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2024-09-12 18:22:37,321 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:22:37,321 INFO L276 IsEmpty]: Start isEmpty. Operand 2892 states and 3249 transitions. [2024-09-12 18:22:37,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-09-12 18:22:37,323 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:22:37,323 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:22:37,336 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Forceful destruction successful, exit code 0 [2024-09-12 18:22:37,523 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,65 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:22:37,524 INFO L399 AbstractCegarLoop]: === Iteration 84 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [correct_versionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, correct_versionErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, correct_versionErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-09-12 18:22:37,524 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:22:37,524 INFO L85 PathProgramCache]: Analyzing trace with hash -656818883, now seen corresponding path program 17 times [2024-09-12 18:22:37,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:22:37,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785520991] [2024-09-12 18:22:37,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:22:37,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:22:37,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:22:37,615 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:22:37,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:22:37,617 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-12 18:22:37,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:22:37,694 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-12 18:22:37,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:22:37,798 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-09-12 18:22:37,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:22:37,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785520991] [2024-09-12 18:22:37,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785520991] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:22:37,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1347299385] [2024-09-12 18:22:37,799 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-12 18:22:37,799 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:22:37,799 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:22:37,800 INFO L229 MonitoredProcess]: Starting monitored process 66 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 18:22:37,801 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2024-09-12 18:22:37,860 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-09-12 18:22:37,860 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 18:22:37,862 INFO L262 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-09-12 18:22:37,863 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:22:38,079 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-09-12 18:22:38,079 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:22:38,191 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-09-12 18:22:38,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1347299385] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:22:38,191 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:22:38,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 32 [2024-09-12 18:22:38,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703331630] [2024-09-12 18:22:38,192 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:22:38,192 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-09-12 18:22:38,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:22:38,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-09-12 18:22:38,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=913, Unknown=0, NotChecked=0, Total=992 [2024-09-12 18:22:38,193 INFO L87 Difference]: Start difference. First operand 2892 states and 3249 transitions. Second operand has 32 states, 27 states have (on average 3.740740740740741) internal successors, (101), 27 states have internal predecessors, (101), 4 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2024-09-12 18:22:40,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:22:40,513 INFO L93 Difference]: Finished difference Result 2923 states and 3283 transitions. [2024-09-12 18:22:40,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-09-12 18:22:40,513 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 27 states have (on average 3.740740740740741) internal successors, (101), 27 states have internal predecessors, (101), 4 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) Word has length 98 [2024-09-12 18:22:40,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:22:40,520 INFO L225 Difference]: With dead ends: 2923 [2024-09-12 18:22:40,520 INFO L226 Difference]: Without dead ends: 2915 [2024-09-12 18:22:40,520 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 189 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=105, Invalid=1301, Unknown=0, NotChecked=0, Total=1406 [2024-09-12 18:22:40,521 INFO L434 NwaCegarLoop]: 70 mSDtfsCounter, 49 mSDsluCounter, 1341 mSDsCounter, 0 mSdLazyCounter, 714 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 1411 SdHoareTripleChecker+Invalid, 715 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 714 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 18:22:40,521 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 1411 Invalid, 715 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 714 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 18:22:40,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2915 states. [2024-09-12 18:22:42,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2915 to 2903. [2024-09-12 18:22:42,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2903 states, 2839 states have (on average 1.1285663966185278) internal successors, (3204), 2863 states have internal predecessors, (3204), 21 states have call successors, (21), 20 states have call predecessors, (21), 35 states have return successors, (36), 19 states have call predecessors, (36), 19 states have call successors, (36) [2024-09-12 18:22:42,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2903 states to 2903 states and 3261 transitions. [2024-09-12 18:22:42,530 INFO L78 Accepts]: Start accepts. Automaton has 2903 states and 3261 transitions. Word has length 98 [2024-09-12 18:22:42,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:22:42,531 INFO L474 AbstractCegarLoop]: Abstraction has 2903 states and 3261 transitions. [2024-09-12 18:22:42,531 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 27 states have (on average 3.740740740740741) internal successors, (101), 27 states have internal predecessors, (101), 4 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2024-09-12 18:22:42,531 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:22:42,531 INFO L276 IsEmpty]: Start isEmpty. Operand 2903 states and 3261 transitions. [2024-09-12 18:22:42,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-09-12 18:22:42,534 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:22:42,534 INFO L216 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 7, 4, 4, 4, 4, 4, 3, 3, 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] [2024-09-12 18:22:42,547 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Ended with exit code 0 [2024-09-12 18:22:42,734 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83,66 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:22:42,734 INFO L399 AbstractCegarLoop]: === Iteration 85 === Targeting student_versionErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [correct_versionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, correct_versionErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, correct_versionErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-09-12 18:22:42,735 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:22:42,735 INFO L85 PathProgramCache]: Analyzing trace with hash -1437959657, now seen corresponding path program 5 times [2024-09-12 18:22:42,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:22:42,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916651885] [2024-09-12 18:22:42,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:22:42,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:22:42,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:22:42,789 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:22:42,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:22:42,790 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-12 18:22:42,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:22:42,793 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 0 proven. 140 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2024-09-12 18:22:42,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:22:42,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916651885] [2024-09-12 18:22:42,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916651885] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:22:42,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [275955239] [2024-09-12 18:22:42,794 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-12 18:22:42,794 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:22:42,794 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:22:42,795 INFO L229 MonitoredProcess]: Starting monitored process 67 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 18:22:42,796 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2024-09-12 18:22:42,845 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2024-09-12 18:22:42,845 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 18:22:42,846 INFO L262 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-09-12 18:22:42,847 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:22:42,879 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 0 proven. 140 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2024-09-12 18:22:42,879 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:22:42,976 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 0 proven. 140 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2024-09-12 18:22:42,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [275955239] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:22:42,977 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:22:42,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2024-09-12 18:22:42,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993316705] [2024-09-12 18:22:42,977 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:22:42,977 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-09-12 18:22:42,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:22:42,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-09-12 18:22:42,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2024-09-12 18:22:42,978 INFO L87 Difference]: Start difference. First operand 2903 states and 3261 transitions. Second operand has 19 states, 18 states have (on average 6.277777777777778) internal successors, (113), 19 states have internal predecessors, (113), 1 states have call successors, (4), 1 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 18:22:47,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:22:47,126 INFO L93 Difference]: Finished difference Result 7623 states and 8748 transitions. [2024-09-12 18:22:47,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-09-12 18:22:47,126 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 6.277777777777778) internal successors, (113), 19 states have internal predecessors, (113), 1 states have call successors, (4), 1 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 97 [2024-09-12 18:22:47,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:22:47,139 INFO L225 Difference]: With dead ends: 7623 [2024-09-12 18:22:47,139 INFO L226 Difference]: Without dead ends: 7622 [2024-09-12 18:22:47,141 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2024-09-12 18:22:47,141 INFO L434 NwaCegarLoop]: 65 mSDtfsCounter, 482 mSDsluCounter, 461 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 482 SdHoareTripleChecker+Valid, 526 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 18:22:47,141 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [482 Valid, 526 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 18:22:47,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7622 states. [2024-09-12 18:22:49,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7622 to 3173. [2024-09-12 18:22:49,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3173 states, 3109 states have (on average 1.1347700225152781) internal successors, (3528), 3133 states have internal predecessors, (3528), 21 states have call successors, (21), 20 states have call predecessors, (21), 35 states have return successors, (36), 19 states have call predecessors, (36), 19 states have call successors, (36) [2024-09-12 18:22:49,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3173 states to 3173 states and 3585 transitions. [2024-09-12 18:22:49,295 INFO L78 Accepts]: Start accepts. Automaton has 3173 states and 3585 transitions. Word has length 97 [2024-09-12 18:22:49,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:22:49,295 INFO L474 AbstractCegarLoop]: Abstraction has 3173 states and 3585 transitions. [2024-09-12 18:22:49,296 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 6.277777777777778) internal successors, (113), 19 states have internal predecessors, (113), 1 states have call successors, (4), 1 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 18:22:49,296 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:22:49,296 INFO L276 IsEmpty]: Start isEmpty. Operand 3173 states and 3585 transitions. [2024-09-12 18:22:49,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-09-12 18:22:49,299 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:22:49,299 INFO L216 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:22:49,312 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Forceful destruction successful, exit code 0 [2024-09-12 18:22:49,499 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable84 [2024-09-12 18:22:49,500 INFO L399 AbstractCegarLoop]: === Iteration 86 === Targeting student_versionErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [correct_versionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, correct_versionErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, correct_versionErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-09-12 18:22:49,500 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:22:49,500 INFO L85 PathProgramCache]: Analyzing trace with hash 1044747821, now seen corresponding path program 4 times [2024-09-12 18:22:49,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:22:49,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010798383] [2024-09-12 18:22:49,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:22:49,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:22:49,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:22:49,552 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:22:49,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:22:49,554 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-12 18:22:49,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:22:49,558 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-09-12 18:22:49,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:22:49,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010798383] [2024-09-12 18:22:49,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010798383] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:22:49,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [696219704] [2024-09-12 18:22:49,559 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-12 18:22:49,559 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:22:49,559 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:22:49,560 INFO L229 MonitoredProcess]: Starting monitored process 68 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 18:22:49,561 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process [2024-09-12 18:22:49,612 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-12 18:22:49,612 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 18:22:49,613 INFO L262 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-09-12 18:22:49,615 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:22:49,965 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 24 proven. 162 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-09-12 18:22:49,965 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:22:50,446 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 24 proven. 162 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-09-12 18:22:50,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [696219704] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:22:50,447 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:22:50,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 19, 19] total 40 [2024-09-12 18:22:50,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838011835] [2024-09-12 18:22:50,447 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:22:50,447 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-09-12 18:22:50,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:22:50,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-09-12 18:22:50,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=1441, Unknown=0, NotChecked=0, Total=1560 [2024-09-12 18:22:50,448 INFO L87 Difference]: Start difference. First operand 3173 states and 3585 transitions. Second operand has 40 states, 40 states have (on average 5.8) internal successors, (232), 39 states have internal predecessors, (232), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-09-12 18:22:54,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:22:54,388 INFO L93 Difference]: Finished difference Result 4234 states and 4784 transitions. [2024-09-12 18:22:54,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2024-09-12 18:22:54,389 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 5.8) internal successors, (232), 39 states have internal predecessors, (232), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 98 [2024-09-12 18:22:54,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:22:54,397 INFO L225 Difference]: With dead ends: 4234 [2024-09-12 18:22:54,397 INFO L226 Difference]: Without dead ends: 4076 [2024-09-12 18:22:54,399 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 166 SyntacticMatches, 3 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 756 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=562, Invalid=4268, Unknown=0, NotChecked=0, Total=4830 [2024-09-12 18:22:54,399 INFO L434 NwaCegarLoop]: 54 mSDtfsCounter, 345 mSDsluCounter, 1402 mSDsCounter, 0 mSdLazyCounter, 1862 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 347 SdHoareTripleChecker+Valid, 1456 SdHoareTripleChecker+Invalid, 1874 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1862 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-09-12 18:22:54,399 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [347 Valid, 1456 Invalid, 1874 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1862 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-09-12 18:22:54,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4076 states. [2024-09-12 18:22:57,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4076 to 3709. [2024-09-12 18:22:57,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3709 states, 3633 states have (on average 1.1312964492155244) internal successors, (4110), 3661 states have internal predecessors, (4110), 25 states have call successors, (25), 24 states have call predecessors, (25), 43 states have return successors, (44), 23 states have call predecessors, (44), 23 states have call successors, (44) [2024-09-12 18:22:57,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3709 states to 3709 states and 4179 transitions. [2024-09-12 18:22:57,119 INFO L78 Accepts]: Start accepts. Automaton has 3709 states and 4179 transitions. Word has length 98 [2024-09-12 18:22:57,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:22:57,120 INFO L474 AbstractCegarLoop]: Abstraction has 3709 states and 4179 transitions. [2024-09-12 18:22:57,120 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 5.8) internal successors, (232), 39 states have internal predecessors, (232), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-09-12 18:22:57,120 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:22:57,120 INFO L276 IsEmpty]: Start isEmpty. Operand 3709 states and 4179 transitions. [2024-09-12 18:22:57,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-09-12 18:22:57,123 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:22:57,124 INFO L216 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1] [2024-09-12 18:22:57,136 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Forceful destruction successful, exit code 0 [2024-09-12 18:22:57,324 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85,68 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:22:57,324 INFO L399 AbstractCegarLoop]: === Iteration 87 === Targeting student_versionErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [correct_versionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, correct_versionErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, correct_versionErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-09-12 18:22:57,324 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:22:57,325 INFO L85 PathProgramCache]: Analyzing trace with hash 1670362827, now seen corresponding path program 3 times [2024-09-12 18:22:57,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:22:57,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926042636] [2024-09-12 18:22:57,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:22:57,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:22:57,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:22:57,379 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:22:57,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:22:57,381 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-12 18:22:57,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:22:57,384 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-09-12 18:22:57,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:22:57,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926042636] [2024-09-12 18:22:57,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926042636] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:22:57,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [262633734] [2024-09-12 18:22:57,384 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-12 18:22:57,385 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:22:57,385 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:22:57,386 INFO L229 MonitoredProcess]: Starting monitored process 69 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 18:22:57,386 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process [2024-09-12 18:22:57,440 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-09-12 18:22:57,440 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 18:22:57,441 INFO L262 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-09-12 18:22:57,442 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:22:57,523 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-09-12 18:22:57,524 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:22:57,606 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-09-12 18:22:57,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [262633734] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:22:57,606 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:22:57,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 21 [2024-09-12 18:22:57,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865375500] [2024-09-12 18:22:57,606 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:22:57,606 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-09-12 18:22:57,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:22:57,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-09-12 18:22:57,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=340, Unknown=0, NotChecked=0, Total=462 [2024-09-12 18:22:57,607 INFO L87 Difference]: Start difference. First operand 3709 states and 4179 transitions. Second operand has 22 states, 21 states have (on average 6.428571428571429) internal successors, (135), 22 states have internal predecessors, (135), 1 states have call successors, (4), 1 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 18:23:00,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:23:00,536 INFO L93 Difference]: Finished difference Result 3885 states and 4409 transitions. [2024-09-12 18:23:00,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-09-12 18:23:00,537 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 6.428571428571429) internal successors, (135), 22 states have internal predecessors, (135), 1 states have call successors, (4), 1 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 98 [2024-09-12 18:23:00,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:23:00,544 INFO L225 Difference]: With dead ends: 3885 [2024-09-12 18:23:00,544 INFO L226 Difference]: Without dead ends: 3884 [2024-09-12 18:23:00,545 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 365 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=392, Invalid=940, Unknown=0, NotChecked=0, Total=1332 [2024-09-12 18:23:00,545 INFO L434 NwaCegarLoop]: 70 mSDtfsCounter, 181 mSDsluCounter, 746 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 816 SdHoareTripleChecker+Invalid, 272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 18:23:00,545 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [181 Valid, 816 Invalid, 272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 262 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 18:23:00,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3884 states. [2024-09-12 18:23:03,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3884 to 3814. [2024-09-12 18:23:03,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3814 states, 3738 states have (on average 1.1348314606741574) internal successors, (4242), 3766 states have internal predecessors, (4242), 25 states have call successors, (25), 24 states have call predecessors, (25), 43 states have return successors, (44), 23 states have call predecessors, (44), 23 states have call successors, (44) [2024-09-12 18:23:03,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3814 states to 3814 states and 4311 transitions. [2024-09-12 18:23:03,187 INFO L78 Accepts]: Start accepts. Automaton has 3814 states and 4311 transitions. Word has length 98 [2024-09-12 18:23:03,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:23:03,187 INFO L474 AbstractCegarLoop]: Abstraction has 3814 states and 4311 transitions. [2024-09-12 18:23:03,187 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 6.428571428571429) internal successors, (135), 22 states have internal predecessors, (135), 1 states have call successors, (4), 1 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 18:23:03,187 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:23:03,187 INFO L276 IsEmpty]: Start isEmpty. Operand 3814 states and 4311 transitions. [2024-09-12 18:23:03,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-09-12 18:23:03,190 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:23:03,190 INFO L216 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1] [2024-09-12 18:23:03,203 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Ended with exit code 0 [2024-09-12 18:23:03,391 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable86 [2024-09-12 18:23:03,391 INFO L399 AbstractCegarLoop]: === Iteration 88 === Targeting student_versionErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [correct_versionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, correct_versionErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, correct_versionErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-09-12 18:23:03,391 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:23:03,391 INFO L85 PathProgramCache]: Analyzing trace with hash -1099087219, now seen corresponding path program 2 times [2024-09-12 18:23:03,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:23:03,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120444999] [2024-09-12 18:23:03,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:23:03,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:23:03,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:23:03,427 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:23:03,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:23:03,429 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-12 18:23:03,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:23:03,432 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-09-12 18:23:03,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:23:03,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120444999] [2024-09-12 18:23:03,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120444999] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:23:03,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [174522188] [2024-09-12 18:23:03,432 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 18:23:03,432 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:23:03,432 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:23:03,433 INFO L229 MonitoredProcess]: Starting monitored process 70 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 18:23:03,434 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Waiting until timeout for monitored process [2024-09-12 18:23:03,485 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 18:23:03,485 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 18:23:03,486 INFO L262 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-09-12 18:23:03,487 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:23:03,522 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-09-12 18:23:03,522 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:23:03,577 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-09-12 18:23:03,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [174522188] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:23:03,577 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:23:03,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2024-09-12 18:23:03,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019422252] [2024-09-12 18:23:03,578 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:23:03,578 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-09-12 18:23:03,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:23:03,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-09-12 18:23:03,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=96, Unknown=0, NotChecked=0, Total=156 [2024-09-12 18:23:03,578 INFO L87 Difference]: Start difference. First operand 3814 states and 4311 transitions. Second operand has 13 states, 12 states have (on average 8.25) internal successors, (99), 13 states have internal predecessors, (99), 1 states have call successors, (4), 1 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 18:23:07,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:23:07,525 INFO L93 Difference]: Finished difference Result 5749 states and 6567 transitions. [2024-09-12 18:23:07,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-09-12 18:23:07,525 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 8.25) internal successors, (99), 13 states have internal predecessors, (99), 1 states have call successors, (4), 1 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 100 [2024-09-12 18:23:07,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:23:07,535 INFO L225 Difference]: With dead ends: 5749 [2024-09-12 18:23:07,536 INFO L226 Difference]: Without dead ends: 5748 [2024-09-12 18:23:07,537 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=235, Invalid=467, Unknown=0, NotChecked=0, Total=702 [2024-09-12 18:23:07,537 INFO L434 NwaCegarLoop]: 59 mSDtfsCounter, 142 mSDsluCounter, 304 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 363 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 18:23:07,537 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 363 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 18:23:07,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5748 states. [2024-09-12 18:23:10,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5748 to 3701. [2024-09-12 18:23:10,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3701 states, 3626 states have (on average 1.1235521235521235) internal successors, (4074), 3653 states have internal predecessors, (4074), 25 states have call successors, (25), 24 states have call predecessors, (25), 43 states have return successors, (44), 23 states have call predecessors, (44), 23 states have call successors, (44) [2024-09-12 18:23:10,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3701 states to 3701 states and 4143 transitions. [2024-09-12 18:23:10,144 INFO L78 Accepts]: Start accepts. Automaton has 3701 states and 4143 transitions. Word has length 100 [2024-09-12 18:23:10,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:23:10,145 INFO L474 AbstractCegarLoop]: Abstraction has 3701 states and 4143 transitions. [2024-09-12 18:23:10,145 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 8.25) internal successors, (99), 13 states have internal predecessors, (99), 1 states have call successors, (4), 1 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 18:23:10,145 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:23:10,145 INFO L276 IsEmpty]: Start isEmpty. Operand 3701 states and 4143 transitions. [2024-09-12 18:23:10,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-09-12 18:23:10,148 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:23:10,148 INFO L216 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1] [2024-09-12 18:23:10,161 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Ended with exit code 0 [2024-09-12 18:23:10,349 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87,70 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:23:10,349 INFO L399 AbstractCegarLoop]: === Iteration 89 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [correct_versionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, correct_versionErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, correct_versionErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-09-12 18:23:10,349 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:23:10,349 INFO L85 PathProgramCache]: Analyzing trace with hash -283019737, now seen corresponding path program 18 times [2024-09-12 18:23:10,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:23:10,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147978304] [2024-09-12 18:23:10,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:23:10,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:23:10,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:23:10,406 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:23:10,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:23:10,407 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-12 18:23:10,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:23:10,507 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-12 18:23:10,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:23:10,618 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-12 18:23:10,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:23:10,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147978304] [2024-09-12 18:23:10,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147978304] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:23:10,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [71896099] [2024-09-12 18:23:10,618 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-12 18:23:10,618 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:23:10,618 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:23:10,619 INFO L229 MonitoredProcess]: Starting monitored process 71 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 18:23:10,633 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Waiting until timeout for monitored process [2024-09-12 18:23:10,685 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2024-09-12 18:23:10,685 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 18:23:10,686 INFO L262 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-09-12 18:23:10,688 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:23:11,058 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-12 18:23:11,058 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:23:11,613 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 26 proven. 110 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-12 18:23:11,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [71896099] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:23:11,613 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:23:11,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17, 17] total 43 [2024-09-12 18:23:11,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448565598] [2024-09-12 18:23:11,614 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:23:11,614 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-09-12 18:23:11,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:23:11,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-09-12 18:23:11,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=1660, Unknown=0, NotChecked=0, Total=1806 [2024-09-12 18:23:11,615 INFO L87 Difference]: Start difference. First operand 3701 states and 4143 transitions. Second operand has 43 states, 43 states have (on average 5.395348837209302) internal successors, (232), 43 states have internal predecessors, (232), 3 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-12 18:23:15,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:23:15,103 INFO L93 Difference]: Finished difference Result 3779 states and 4226 transitions. [2024-09-12 18:23:15,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-09-12 18:23:15,104 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 5.395348837209302) internal successors, (232), 43 states have internal predecessors, (232), 3 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 103 [2024-09-12 18:23:15,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:23:15,111 INFO L225 Difference]: With dead ends: 3779 [2024-09-12 18:23:15,111 INFO L226 Difference]: Without dead ends: 3719 [2024-09-12 18:23:15,112 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 184 SyntacticMatches, 3 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 421 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=263, Invalid=2929, Unknown=0, NotChecked=0, Total=3192 [2024-09-12 18:23:15,112 INFO L434 NwaCegarLoop]: 78 mSDtfsCounter, 36 mSDsluCounter, 1808 mSDsCounter, 0 mSdLazyCounter, 1421 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 1886 SdHoareTripleChecker+Invalid, 1431 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 1421 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-12 18:23:15,112 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 1886 Invalid, 1431 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 1421 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-12 18:23:15,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3719 states. [2024-09-12 18:23:17,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3719 to 3647. [2024-09-12 18:23:17,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3647 states, 3572 states have (on average 1.1243001119820828) internal successors, (4016), 3599 states have internal predecessors, (4016), 25 states have call successors, (25), 24 states have call predecessors, (25), 43 states have return successors, (44), 23 states have call predecessors, (44), 23 states have call successors, (44) [2024-09-12 18:23:17,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3647 states to 3647 states and 4085 transitions. [2024-09-12 18:23:17,703 INFO L78 Accepts]: Start accepts. Automaton has 3647 states and 4085 transitions. Word has length 103 [2024-09-12 18:23:17,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:23:17,703 INFO L474 AbstractCegarLoop]: Abstraction has 3647 states and 4085 transitions. [2024-09-12 18:23:17,704 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 5.395348837209302) internal successors, (232), 43 states have internal predecessors, (232), 3 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-12 18:23:17,704 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:23:17,704 INFO L276 IsEmpty]: Start isEmpty. Operand 3647 states and 4085 transitions. [2024-09-12 18:23:17,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-09-12 18:23:17,707 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:23:17,707 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:23:17,720 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Ended with exit code 0 [2024-09-12 18:23:17,907 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88,71 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:23:17,908 INFO L399 AbstractCegarLoop]: === Iteration 90 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [correct_versionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, correct_versionErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, correct_versionErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-09-12 18:23:17,908 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:23:17,908 INFO L85 PathProgramCache]: Analyzing trace with hash -403717163, now seen corresponding path program 19 times [2024-09-12 18:23:17,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:23:17,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037885619] [2024-09-12 18:23:17,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:23:17,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:23:17,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:23:17,940 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:23:17,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:23:17,941 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-12 18:23:17,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:23:17,945 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-12 18:23:17,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:23:17,993 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 34 proven. 18 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-09-12 18:23:17,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:23:17,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037885619] [2024-09-12 18:23:17,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2037885619] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:23:17,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1315938751] [2024-09-12 18:23:17,994 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-12 18:23:17,994 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:23:17,994 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:23:17,996 INFO L229 MonitoredProcess]: Starting monitored process 72 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 18:23:17,996 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Waiting until timeout for monitored process [2024-09-12 18:23:18,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:23:18,051 INFO L262 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-09-12 18:23:18,052 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:23:18,115 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 34 proven. 18 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-09-12 18:23:18,115 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:23:18,166 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 34 proven. 18 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-09-12 18:23:18,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1315938751] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:23:18,167 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:23:18,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 14 [2024-09-12 18:23:18,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703423861] [2024-09-12 18:23:18,167 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:23:18,167 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-09-12 18:23:18,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:23:18,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-09-12 18:23:18,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2024-09-12 18:23:18,168 INFO L87 Difference]: Start difference. First operand 3647 states and 4085 transitions. Second operand has 14 states, 14 states have (on average 6.571428571428571) internal successors, (92), 14 states have internal predecessors, (92), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-09-12 18:23:21,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:23:21,105 INFO L93 Difference]: Finished difference Result 4145 states and 4644 transitions. [2024-09-12 18:23:21,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-09-12 18:23:21,106 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.571428571428571) internal successors, (92), 14 states have internal predecessors, (92), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 103 [2024-09-12 18:23:21,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:23:21,113 INFO L225 Difference]: With dead ends: 4145 [2024-09-12 18:23:21,114 INFO L226 Difference]: Without dead ends: 3813 [2024-09-12 18:23:21,115 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 202 SyntacticMatches, 7 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=111, Invalid=231, Unknown=0, NotChecked=0, Total=342 [2024-09-12 18:23:21,116 INFO L434 NwaCegarLoop]: 70 mSDtfsCounter, 50 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 284 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 18:23:21,116 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 284 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 18:23:21,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3813 states. [2024-09-12 18:23:23,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3813 to 3799. [2024-09-12 18:23:23,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3799 states, 3727 states have (on average 1.1132277971558895) internal successors, (4149), 3753 states have internal predecessors, (4149), 24 states have call successors, (24), 23 states have call predecessors, (24), 41 states have return successors, (42), 22 states have call predecessors, (42), 22 states have call successors, (42) [2024-09-12 18:23:23,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3799 states to 3799 states and 4215 transitions. [2024-09-12 18:23:23,870 INFO L78 Accepts]: Start accepts. Automaton has 3799 states and 4215 transitions. Word has length 103 [2024-09-12 18:23:23,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:23:23,870 INFO L474 AbstractCegarLoop]: Abstraction has 3799 states and 4215 transitions. [2024-09-12 18:23:23,870 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.571428571428571) internal successors, (92), 14 states have internal predecessors, (92), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-09-12 18:23:23,871 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:23:23,871 INFO L276 IsEmpty]: Start isEmpty. Operand 3799 states and 4215 transitions. [2024-09-12 18:23:23,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-09-12 18:23:23,874 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:23:23,874 INFO L216 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:23:23,887 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Forceful destruction successful, exit code 0 [2024-09-12 18:23:24,074 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89,72 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:23:24,075 INFO L399 AbstractCegarLoop]: === Iteration 91 === Targeting correct_versionErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [correct_versionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, correct_versionErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, correct_versionErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-09-12 18:23:24,075 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:23:24,075 INFO L85 PathProgramCache]: Analyzing trace with hash -510266577, now seen corresponding path program 9 times [2024-09-12 18:23:24,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:23:24,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400925685] [2024-09-12 18:23:24,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:23:24,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:23:24,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:23:24,216 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:23:24,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:23:24,218 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 0 proven. 231 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-09-12 18:23:24,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:23:24,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400925685] [2024-09-12 18:23:24,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400925685] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:23:24,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1925685698] [2024-09-12 18:23:24,218 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-12 18:23:24,218 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:23:24,218 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:23:24,220 INFO L229 MonitoredProcess]: Starting monitored process 73 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 18:23:24,221 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Waiting until timeout for monitored process [2024-09-12 18:23:24,275 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2024-09-12 18:23:24,275 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 18:23:24,276 INFO L262 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-09-12 18:23:24,277 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:23:24,396 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 0 proven. 231 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-09-12 18:23:24,396 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:23:24,627 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 0 proven. 231 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-09-12 18:23:24,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1925685698] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:23:24,628 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:23:24,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 37 [2024-09-12 18:23:24,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970995310] [2024-09-12 18:23:24,628 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:23:24,628 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-09-12 18:23:24,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:23:24,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-09-12 18:23:24,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=402, Invalid=1004, Unknown=0, NotChecked=0, Total=1406 [2024-09-12 18:23:24,629 INFO L87 Difference]: Start difference. First operand 3799 states and 4215 transitions. Second operand has 38 states, 37 states have (on average 5.216216216216216) internal successors, (193), 38 states have internal predecessors, (193), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:23:33,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:23:33,892 INFO L93 Difference]: Finished difference Result 5653 states and 6289 transitions. [2024-09-12 18:23:33,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 185 states. [2024-09-12 18:23:33,892 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 37 states have (on average 5.216216216216216) internal successors, (193), 38 states have internal predecessors, (193), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 104 [2024-09-12 18:23:33,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:23:33,902 INFO L225 Difference]: With dead ends: 5653 [2024-09-12 18:23:33,902 INFO L226 Difference]: Without dead ends: 5651 [2024-09-12 18:23:33,905 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 383 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 194 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17841 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=12334, Invalid=25886, Unknown=0, NotChecked=0, Total=38220 [2024-09-12 18:23:33,905 INFO L434 NwaCegarLoop]: 84 mSDtfsCounter, 3087 mSDsluCounter, 1090 mSDsCounter, 0 mSdLazyCounter, 468 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3087 SdHoareTripleChecker+Valid, 1174 SdHoareTripleChecker+Invalid, 561 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 468 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 18:23:33,905 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [3087 Valid, 1174 Invalid, 561 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 468 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 18:23:33,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5651 states. [2024-09-12 18:23:36,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5651 to 3962. [2024-09-12 18:23:36,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3962 states, 3890 states have (on average 1.1169665809768639) internal successors, (4345), 3916 states have internal predecessors, (4345), 24 states have call successors, (24), 23 states have call predecessors, (24), 41 states have return successors, (42), 22 states have call predecessors, (42), 22 states have call successors, (42) [2024-09-12 18:23:36,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3962 states to 3962 states and 4411 transitions. [2024-09-12 18:23:36,934 INFO L78 Accepts]: Start accepts. Automaton has 3962 states and 4411 transitions. Word has length 104 [2024-09-12 18:23:36,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:23:36,934 INFO L474 AbstractCegarLoop]: Abstraction has 3962 states and 4411 transitions. [2024-09-12 18:23:36,935 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 37 states have (on average 5.216216216216216) internal successors, (193), 38 states have internal predecessors, (193), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:23:36,935 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:23:36,935 INFO L276 IsEmpty]: Start isEmpty. Operand 3962 states and 4411 transitions. [2024-09-12 18:23:36,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-09-12 18:23:36,938 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:23:36,938 INFO L216 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:23:36,951 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Ended with exit code 0 [2024-09-12 18:23:37,139 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90,73 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:23:37,139 INFO L399 AbstractCegarLoop]: === Iteration 92 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [correct_versionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, correct_versionErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, correct_versionErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-09-12 18:23:37,139 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:23:37,139 INFO L85 PathProgramCache]: Analyzing trace with hash 1718091140, now seen corresponding path program 20 times [2024-09-12 18:23:37,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:23:37,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676317773] [2024-09-12 18:23:37,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:23:37,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:23:37,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:23:37,243 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:23:37,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:23:37,245 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-12 18:23:37,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:23:37,337 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-12 18:23:37,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:23:37,480 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 0 proven. 164 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-12 18:23:37,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:23:37,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676317773] [2024-09-12 18:23:37,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676317773] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:23:37,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1492594121] [2024-09-12 18:23:37,481 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 18:23:37,481 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:23:37,481 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:23:37,482 INFO L229 MonitoredProcess]: Starting monitored process 74 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 18:23:37,483 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Waiting until timeout for monitored process [2024-09-12 18:23:37,540 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 18:23:37,540 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 18:23:37,541 INFO L262 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 51 conjuncts are in the unsatisfiable core [2024-09-12 18:23:37,543 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:23:37,705 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 0 proven. 164 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-12 18:23:37,705 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:23:37,832 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 0 proven. 164 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-12 18:23:37,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1492594121] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:23:37,832 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:23:37,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28, 28] total 34 [2024-09-12 18:23:37,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034938384] [2024-09-12 18:23:37,832 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:23:37,833 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-09-12 18:23:37,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:23:37,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-09-12 18:23:37,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=1047, Unknown=0, NotChecked=0, Total=1122 [2024-09-12 18:23:37,833 INFO L87 Difference]: Start difference. First operand 3962 states and 4411 transitions. Second operand has 34 states, 29 states have (on average 3.8275862068965516) internal successors, (111), 29 states have internal predecessors, (111), 4 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2024-09-12 18:23:41,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:23:41,832 INFO L93 Difference]: Finished difference Result 4162 states and 4621 transitions. [2024-09-12 18:23:41,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-09-12 18:23:41,832 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 29 states have (on average 3.8275862068965516) internal successors, (111), 29 states have internal predecessors, (111), 4 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) Word has length 108 [2024-09-12 18:23:41,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:23:41,841 INFO L225 Difference]: With dead ends: 4162 [2024-09-12 18:23:41,841 INFO L226 Difference]: Without dead ends: 4057 [2024-09-12 18:23:41,842 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 213 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=101, Invalid=1459, Unknown=0, NotChecked=0, Total=1560 [2024-09-12 18:23:41,842 INFO L434 NwaCegarLoop]: 156 mSDtfsCounter, 137 mSDsluCounter, 3989 mSDsCounter, 0 mSdLazyCounter, 2357 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 4145 SdHoareTripleChecker+Invalid, 2359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 2357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-09-12 18:23:41,842 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 4145 Invalid, 2359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 2357 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-09-12 18:23:41,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4057 states. [2024-09-12 18:23:44,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4057 to 3909. [2024-09-12 18:23:44,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3909 states, 3840 states have (on average 1.11640625) internal successors, (4287), 3865 states have internal predecessors, (4287), 23 states have call successors, (23), 22 states have call predecessors, (23), 39 states have return successors, (40), 21 states have call predecessors, (40), 21 states have call successors, (40) [2024-09-12 18:23:44,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3909 states to 3909 states and 4350 transitions. [2024-09-12 18:23:44,825 INFO L78 Accepts]: Start accepts. Automaton has 3909 states and 4350 transitions. Word has length 108 [2024-09-12 18:23:44,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:23:44,825 INFO L474 AbstractCegarLoop]: Abstraction has 3909 states and 4350 transitions. [2024-09-12 18:23:44,825 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 29 states have (on average 3.8275862068965516) internal successors, (111), 29 states have internal predecessors, (111), 4 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2024-09-12 18:23:44,825 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:23:44,825 INFO L276 IsEmpty]: Start isEmpty. Operand 3909 states and 4350 transitions. [2024-09-12 18:23:44,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-09-12 18:23:44,828 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:23:44,828 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2024-09-12 18:23:44,841 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Ended with exit code 0 [2024-09-12 18:23:45,028 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91,74 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:23:45,029 INFO L399 AbstractCegarLoop]: === Iteration 93 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [correct_versionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, correct_versionErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, correct_versionErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-09-12 18:23:45,029 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:23:45,029 INFO L85 PathProgramCache]: Analyzing trace with hash 570764932, now seen corresponding path program 21 times [2024-09-12 18:23:45,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:23:45,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38391606] [2024-09-12 18:23:45,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:23:45,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:23:45,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:23:45,127 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:23:45,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:23:45,128 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-12 18:23:45,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:23:45,209 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-12 18:23:45,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:23:45,334 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 82 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-09-12 18:23:45,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:23:45,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38391606] [2024-09-12 18:23:45,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38391606] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:23:45,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [38487577] [2024-09-12 18:23:45,335 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-12 18:23:45,335 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:23:45,335 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:23:45,336 INFO L229 MonitoredProcess]: Starting monitored process 75 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 18:23:45,337 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Waiting until timeout for monitored process [2024-09-12 18:23:45,391 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-09-12 18:23:45,391 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 18:23:45,393 INFO L262 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-09-12 18:23:45,394 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:23:45,588 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 82 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-09-12 18:23:45,588 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:23:45,712 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 82 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-09-12 18:23:45,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [38487577] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:23:45,712 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:23:45,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 26] total 34 [2024-09-12 18:23:45,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854012223] [2024-09-12 18:23:45,712 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:23:45,713 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-09-12 18:23:45,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:23:45,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-09-12 18:23:45,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=1043, Unknown=0, NotChecked=0, Total=1122 [2024-09-12 18:23:45,713 INFO L87 Difference]: Start difference. First operand 3909 states and 4350 transitions. Second operand has 34 states, 29 states have (on average 3.8275862068965516) internal successors, (111), 29 states have internal predecessors, (111), 4 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2024-09-12 18:23:49,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:23:49,474 INFO L93 Difference]: Finished difference Result 4023 states and 4468 transitions. [2024-09-12 18:23:49,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-09-12 18:23:49,475 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 29 states have (on average 3.8275862068965516) internal successors, (111), 29 states have internal predecessors, (111), 4 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) Word has length 108 [2024-09-12 18:23:49,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:23:49,483 INFO L225 Difference]: With dead ends: 4023 [2024-09-12 18:23:49,483 INFO L226 Difference]: Without dead ends: 3939 [2024-09-12 18:23:49,484 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 211 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=105, Invalid=1455, Unknown=0, NotChecked=0, Total=1560 [2024-09-12 18:23:49,484 INFO L434 NwaCegarLoop]: 122 mSDtfsCounter, 101 mSDsluCounter, 2973 mSDsCounter, 0 mSdLazyCounter, 1743 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 3095 SdHoareTripleChecker+Invalid, 1745 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1743 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-12 18:23:49,484 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 3095 Invalid, 1745 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1743 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-12 18:23:49,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3939 states. [2024-09-12 18:23:52,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3939 to 3849. [2024-09-12 18:23:52,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3849 states, 3783 states have (on average 1.1157811260904045) internal successors, (4221), 3807 states have internal predecessors, (4221), 22 states have call successors, (22), 21 states have call predecessors, (22), 37 states have return successors, (38), 20 states have call predecessors, (38), 20 states have call successors, (38) [2024-09-12 18:23:52,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3849 states to 3849 states and 4281 transitions. [2024-09-12 18:23:52,463 INFO L78 Accepts]: Start accepts. Automaton has 3849 states and 4281 transitions. Word has length 108 [2024-09-12 18:23:52,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:23:52,463 INFO L474 AbstractCegarLoop]: Abstraction has 3849 states and 4281 transitions. [2024-09-12 18:23:52,463 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 29 states have (on average 3.8275862068965516) internal successors, (111), 29 states have internal predecessors, (111), 4 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2024-09-12 18:23:52,463 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:23:52,463 INFO L276 IsEmpty]: Start isEmpty. Operand 3849 states and 4281 transitions. [2024-09-12 18:23:52,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-09-12 18:23:52,466 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:23:52,466 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-09-12 18:23:52,478 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Ended with exit code 0 [2024-09-12 18:23:52,666 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92,75 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:23:52,666 INFO L399 AbstractCegarLoop]: === Iteration 94 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [correct_versionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, correct_versionErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, correct_versionErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-09-12 18:23:52,666 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:23:52,667 INFO L85 PathProgramCache]: Analyzing trace with hash 30766468, now seen corresponding path program 22 times [2024-09-12 18:23:52,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:23:52,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465541592] [2024-09-12 18:23:52,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:23:52,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:23:52,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:23:52,773 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:23:52,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:23:52,776 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-12 18:23:52,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:23:52,850 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-12 18:23:52,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:23:52,985 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-09-12 18:23:52,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:23:52,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465541592] [2024-09-12 18:23:52,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465541592] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:23:52,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [611572867] [2024-09-12 18:23:52,985 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-12 18:23:52,985 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:23:52,986 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:23:52,989 INFO L229 MonitoredProcess]: Starting monitored process 76 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 18:23:52,991 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Waiting until timeout for monitored process [2024-09-12 18:23:53,043 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-12 18:23:53,044 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 18:23:53,045 INFO L262 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-09-12 18:23:53,047 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:23:53,279 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-09-12 18:23:53,279 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:23:53,399 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-09-12 18:23:53,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [611572867] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:23:53,399 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:23:53,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 34 [2024-09-12 18:23:53,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094984397] [2024-09-12 18:23:53,399 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:23:53,400 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-09-12 18:23:53,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:23:53,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-09-12 18:23:53,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=1039, Unknown=0, NotChecked=0, Total=1122 [2024-09-12 18:23:53,400 INFO L87 Difference]: Start difference. First operand 3849 states and 4281 transitions. Second operand has 34 states, 29 states have (on average 3.8275862068965516) internal successors, (111), 29 states have internal predecessors, (111), 4 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2024-09-12 18:23:56,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:23:56,969 INFO L93 Difference]: Finished difference Result 3927 states and 4363 transitions. [2024-09-12 18:23:56,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-09-12 18:23:56,969 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 29 states have (on average 3.8275862068965516) internal successors, (111), 29 states have internal predecessors, (111), 4 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) Word has length 108 [2024-09-12 18:23:56,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:23:56,977 INFO L225 Difference]: With dead ends: 3927 [2024-09-12 18:23:56,977 INFO L226 Difference]: Without dead ends: 3853 [2024-09-12 18:23:56,978 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 209 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=109, Invalid=1451, Unknown=0, NotChecked=0, Total=1560 [2024-09-12 18:23:56,978 INFO L434 NwaCegarLoop]: 88 mSDtfsCounter, 65 mSDsluCounter, 2058 mSDsCounter, 0 mSdLazyCounter, 1163 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 2146 SdHoareTripleChecker+Invalid, 1164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-12 18:23:56,978 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 2146 Invalid, 1164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1163 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-12 18:23:56,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3853 states. [2024-09-12 18:23:59,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3853 to 3792. [2024-09-12 18:23:59,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3792 states, 3726 states have (on average 1.1175523349436394) internal successors, (4164), 3751 states have internal predecessors, (4164), 22 states have call successors, (22), 20 states have call predecessors, (22), 37 states have return successors, (39), 20 states have call predecessors, (39), 20 states have call successors, (39) [2024-09-12 18:23:59,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3792 states to 3792 states and 4225 transitions. [2024-09-12 18:23:59,941 INFO L78 Accepts]: Start accepts. Automaton has 3792 states and 4225 transitions. Word has length 108 [2024-09-12 18:23:59,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:23:59,941 INFO L474 AbstractCegarLoop]: Abstraction has 3792 states and 4225 transitions. [2024-09-12 18:23:59,941 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 29 states have (on average 3.8275862068965516) internal successors, (111), 29 states have internal predecessors, (111), 4 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2024-09-12 18:23:59,941 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:23:59,941 INFO L276 IsEmpty]: Start isEmpty. Operand 3792 states and 4225 transitions. [2024-09-12 18:23:59,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-09-12 18:23:59,943 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:23:59,944 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:23:59,957 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Ended with exit code 0 [2024-09-12 18:24:00,144 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93,76 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:24:00,144 INFO L399 AbstractCegarLoop]: === Iteration 95 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [correct_versionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, correct_versionErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, correct_versionErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-09-12 18:24:00,144 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:24:00,144 INFO L85 PathProgramCache]: Analyzing trace with hash -496502685, now seen corresponding path program 23 times [2024-09-12 18:24:00,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:24:00,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787600305] [2024-09-12 18:24:00,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:24:00,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:24:00,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:24:00,198 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:24:00,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:24:00,199 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-12 18:24:00,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:24:00,282 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-09-12 18:24:00,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:24:00,382 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2024-09-12 18:24:00,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:24:00,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787600305] [2024-09-12 18:24:00,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787600305] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:24:00,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [442564867] [2024-09-12 18:24:00,382 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-12 18:24:00,382 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:24:00,382 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:24:00,383 INFO L229 MonitoredProcess]: Starting monitored process 77 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 18:24:00,384 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Waiting until timeout for monitored process [2024-09-12 18:24:00,440 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2024-09-12 18:24:00,440 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 18:24:00,441 INFO L262 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-09-12 18:24:00,443 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:24:00,668 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2024-09-12 18:24:00,668 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:24:01,041 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 16 proven. 36 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2024-09-12 18:24:01,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [442564867] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:24:01,041 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:24:01,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 13, 13] total 32 [2024-09-12 18:24:01,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28613304] [2024-09-12 18:24:01,041 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:24:01,042 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-09-12 18:24:01,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:24:01,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-09-12 18:24:01,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=883, Unknown=0, NotChecked=0, Total=992 [2024-09-12 18:24:01,043 INFO L87 Difference]: Start difference. First operand 3792 states and 4225 transitions. Second operand has 32 states, 32 states have (on average 4.8125) internal successors, (154), 32 states have internal predecessors, (154), 3 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-12 18:24:04,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:24:04,513 INFO L93 Difference]: Finished difference Result 3818 states and 4246 transitions. [2024-09-12 18:24:04,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-09-12 18:24:04,514 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.8125) internal successors, (154), 32 states have internal predecessors, (154), 3 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 108 [2024-09-12 18:24:04,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:24:04,521 INFO L225 Difference]: With dead ends: 3818 [2024-09-12 18:24:04,521 INFO L226 Difference]: Without dead ends: 3667 [2024-09-12 18:24:04,522 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 202 SyntacticMatches, 3 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=169, Invalid=1391, Unknown=0, NotChecked=0, Total=1560 [2024-09-12 18:24:04,522 INFO L434 NwaCegarLoop]: 67 mSDtfsCounter, 45 mSDsluCounter, 1193 mSDsCounter, 0 mSdLazyCounter, 783 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 1260 SdHoareTripleChecker+Invalid, 791 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 783 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 18:24:04,522 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 1260 Invalid, 791 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 783 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 18:24:04,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3667 states. [2024-09-12 18:24:07,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3667 to 3614. [2024-09-12 18:24:07,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3614 states, 3548 states have (on average 1.1214768883878241) internal successors, (3979), 3573 states have internal predecessors, (3979), 22 states have call successors, (22), 20 states have call predecessors, (22), 37 states have return successors, (39), 20 states have call predecessors, (39), 20 states have call successors, (39) [2024-09-12 18:24:07,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3614 states to 3614 states and 4040 transitions. [2024-09-12 18:24:07,402 INFO L78 Accepts]: Start accepts. Automaton has 3614 states and 4040 transitions. Word has length 108 [2024-09-12 18:24:07,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:24:07,402 INFO L474 AbstractCegarLoop]: Abstraction has 3614 states and 4040 transitions. [2024-09-12 18:24:07,402 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.8125) internal successors, (154), 32 states have internal predecessors, (154), 3 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-12 18:24:07,402 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:24:07,403 INFO L276 IsEmpty]: Start isEmpty. Operand 3614 states and 4040 transitions. [2024-09-12 18:24:07,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-09-12 18:24:07,408 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:24:07,409 INFO L216 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 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 18:24:07,425 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Ended with exit code 0 [2024-09-12 18:24:07,609 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 77 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable94 [2024-09-12 18:24:07,609 INFO L399 AbstractCegarLoop]: === Iteration 96 === Targeting student_versionErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [correct_versionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, correct_versionErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, correct_versionErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-09-12 18:24:07,609 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:24:07,609 INFO L85 PathProgramCache]: Analyzing trace with hash 350885894, now seen corresponding path program 5 times [2024-09-12 18:24:07,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:24:07,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008937695] [2024-09-12 18:24:07,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:24:07,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:24:07,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:24:07,668 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:24:07,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:24:07,669 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-12 18:24:07,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:24:07,673 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 140 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2024-09-12 18:24:07,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:24:07,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008937695] [2024-09-12 18:24:07,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008937695] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:24:07,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [731582180] [2024-09-12 18:24:07,673 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-12 18:24:07,673 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:24:07,673 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:24:07,674 INFO L229 MonitoredProcess]: Starting monitored process 78 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 18:24:07,675 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Waiting until timeout for monitored process [2024-09-12 18:24:07,727 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2024-09-12 18:24:07,727 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 18:24:07,728 INFO L262 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-09-12 18:24:07,729 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:24:07,760 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 140 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2024-09-12 18:24:07,760 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:24:07,847 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 140 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2024-09-12 18:24:07,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [731582180] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:24:07,847 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:24:07,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2024-09-12 18:24:07,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27213971] [2024-09-12 18:24:07,848 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:24:07,848 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-09-12 18:24:07,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:24:07,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-09-12 18:24:07,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2024-09-12 18:24:07,849 INFO L87 Difference]: Start difference. First operand 3614 states and 4040 transitions. Second operand has 19 states, 18 states have (on average 7.277777777777778) internal successors, (131), 19 states have internal predecessors, (131), 1 states have call successors, (4), 1 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 18:24:11,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:24:11,819 INFO L93 Difference]: Finished difference Result 4790 states and 5402 transitions. [2024-09-12 18:24:11,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-09-12 18:24:11,820 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 7.277777777777778) internal successors, (131), 19 states have internal predecessors, (131), 1 states have call successors, (4), 1 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 108 [2024-09-12 18:24:11,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:24:11,829 INFO L225 Difference]: With dead ends: 4790 [2024-09-12 18:24:11,829 INFO L226 Difference]: Without dead ends: 4789 [2024-09-12 18:24:11,829 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 211 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2024-09-12 18:24:11,830 INFO L434 NwaCegarLoop]: 57 mSDtfsCounter, 283 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 283 SdHoareTripleChecker+Valid, 330 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 18:24:11,830 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [283 Valid, 330 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 18:24:11,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4789 states. [2024-09-12 18:24:14,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4789 to 3929. [2024-09-12 18:24:14,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3929 states, 3863 states have (on average 1.1255500906031581) internal successors, (4348), 3888 states have internal predecessors, (4348), 22 states have call successors, (22), 20 states have call predecessors, (22), 37 states have return successors, (39), 20 states have call predecessors, (39), 20 states have call successors, (39) [2024-09-12 18:24:14,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3929 states to 3929 states and 4409 transitions. [2024-09-12 18:24:14,811 INFO L78 Accepts]: Start accepts. Automaton has 3929 states and 4409 transitions. Word has length 108 [2024-09-12 18:24:14,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:24:14,811 INFO L474 AbstractCegarLoop]: Abstraction has 3929 states and 4409 transitions. [2024-09-12 18:24:14,811 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 7.277777777777778) internal successors, (131), 19 states have internal predecessors, (131), 1 states have call successors, (4), 1 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 18:24:14,811 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:24:14,811 INFO L276 IsEmpty]: Start isEmpty. Operand 3929 states and 4409 transitions. [2024-09-12 18:24:14,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-09-12 18:24:14,815 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:24:14,815 INFO L216 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:24:14,829 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Ended with exit code 0 [2024-09-12 18:24:15,015 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95,78 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:24:15,015 INFO L399 AbstractCegarLoop]: === Iteration 97 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [correct_versionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, correct_versionErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, correct_versionErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-09-12 18:24:15,016 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:24:15,016 INFO L85 PathProgramCache]: Analyzing trace with hash 846279662, now seen corresponding path program 24 times [2024-09-12 18:24:15,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:24:15,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753064078] [2024-09-12 18:24:15,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:24:15,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:24:15,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:24:15,087 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:24:15,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:24:15,088 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-12 18:24:15,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:24:15,203 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-09-12 18:24:15,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:24:15,339 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 0 proven. 193 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-12 18:24:15,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:24:15,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753064078] [2024-09-12 18:24:15,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753064078] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:24:15,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1888625314] [2024-09-12 18:24:15,339 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-12 18:24:15,340 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:24:15,340 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:24:15,341 INFO L229 MonitoredProcess]: Starting monitored process 79 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 18:24:15,341 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Waiting until timeout for monitored process [2024-09-12 18:24:15,398 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2024-09-12 18:24:15,398 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 18:24:15,399 INFO L262 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-09-12 18:24:15,400 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:24:15,862 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 0 proven. 193 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-12 18:24:15,862 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:24:16,518 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 31 proven. 162 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-12 18:24:16,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1888625314] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:24:16,519 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:24:16,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 19, 19] total 49 [2024-09-12 18:24:16,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688618298] [2024-09-12 18:24:16,519 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:24:16,519 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-09-12 18:24:16,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:24:16,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-09-12 18:24:16,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=2184, Unknown=0, NotChecked=0, Total=2352 [2024-09-12 18:24:16,521 INFO L87 Difference]: Start difference. First operand 3929 states and 4409 transitions. Second operand has 49 states, 49 states have (on average 5.346938775510204) internal successors, (262), 49 states have internal predecessors, (262), 3 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-12 18:24:20,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:24:20,659 INFO L93 Difference]: Finished difference Result 3986 states and 4466 transitions. [2024-09-12 18:24:20,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-09-12 18:24:20,660 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 5.346938775510204) internal successors, (262), 49 states have internal predecessors, (262), 3 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 113 [2024-09-12 18:24:20,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:24:20,667 INFO L225 Difference]: With dead ends: 3986 [2024-09-12 18:24:20,668 INFO L226 Difference]: Without dead ends: 3950 [2024-09-12 18:24:20,668 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 200 SyntacticMatches, 3 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 576 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=318, Invalid=3972, Unknown=0, NotChecked=0, Total=4290 [2024-09-12 18:24:20,669 INFO L434 NwaCegarLoop]: 83 mSDtfsCounter, 45 mSDsluCounter, 1964 mSDsCounter, 0 mSdLazyCounter, 1670 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 2047 SdHoareTripleChecker+Invalid, 1682 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1670 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-09-12 18:24:20,669 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 2047 Invalid, 1682 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1670 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-09-12 18:24:20,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3950 states. [2024-09-12 18:24:23,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3950 to 3902. [2024-09-12 18:24:23,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3902 states, 3836 states have (on average 1.1259124087591241) internal successors, (4319), 3861 states have internal predecessors, (4319), 22 states have call successors, (22), 20 states have call predecessors, (22), 37 states have return successors, (39), 20 states have call predecessors, (39), 20 states have call successors, (39) [2024-09-12 18:24:23,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3902 states to 3902 states and 4380 transitions. [2024-09-12 18:24:23,660 INFO L78 Accepts]: Start accepts. Automaton has 3902 states and 4380 transitions. Word has length 113 [2024-09-12 18:24:23,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:24:23,660 INFO L474 AbstractCegarLoop]: Abstraction has 3902 states and 4380 transitions. [2024-09-12 18:24:23,660 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 5.346938775510204) internal successors, (262), 49 states have internal predecessors, (262), 3 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-12 18:24:23,660 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:24:23,660 INFO L276 IsEmpty]: Start isEmpty. Operand 3902 states and 4380 transitions. [2024-09-12 18:24:23,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-09-12 18:24:23,663 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:24:23,663 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:24:23,677 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Ended with exit code 0 [2024-09-12 18:24:23,864 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96,79 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:24:23,864 INFO L399 AbstractCegarLoop]: === Iteration 98 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [correct_versionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, correct_versionErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, correct_versionErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-09-12 18:24:23,864 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:24:23,864 INFO L85 PathProgramCache]: Analyzing trace with hash -1728910551, now seen corresponding path program 25 times [2024-09-12 18:24:23,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:24:23,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926001880] [2024-09-12 18:24:23,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:24:23,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:24:23,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:24:23,900 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:24:23,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:24:23,901 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-12 18:24:23,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:24:23,905 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-09-12 18:24:23,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:24:23,952 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 34 proven. 18 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-09-12 18:24:23,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:24:23,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926001880] [2024-09-12 18:24:23,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1926001880] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:24:23,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1978419957] [2024-09-12 18:24:23,952 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-12 18:24:23,953 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:24:23,953 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:24:23,954 INFO L229 MonitoredProcess]: Starting monitored process 80 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 18:24:23,954 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Waiting until timeout for monitored process [2024-09-12 18:24:24,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:24:24,012 INFO L262 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-09-12 18:24:24,013 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:24:24,078 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 34 proven. 18 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-09-12 18:24:24,078 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:24:24,138 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 34 proven. 18 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-09-12 18:24:24,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1978419957] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:24:24,138 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:24:24,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 15 [2024-09-12 18:24:24,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877399441] [2024-09-12 18:24:24,139 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:24:24,139 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-09-12 18:24:24,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:24:24,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-09-12 18:24:24,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=131, Unknown=0, NotChecked=0, Total=210 [2024-09-12 18:24:24,139 INFO L87 Difference]: Start difference. First operand 3902 states and 4380 transitions. Second operand has 15 states, 15 states have (on average 6.133333333333334) internal successors, (92), 15 states have internal predecessors, (92), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-09-12 18:24:27,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:24:27,474 INFO L93 Difference]: Finished difference Result 4022 states and 4503 transitions. [2024-09-12 18:24:27,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-09-12 18:24:27,474 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 6.133333333333334) internal successors, (92), 15 states have internal predecessors, (92), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 113 [2024-09-12 18:24:27,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:24:27,484 INFO L225 Difference]: With dead ends: 4022 [2024-09-12 18:24:27,484 INFO L226 Difference]: Without dead ends: 4002 [2024-09-12 18:24:27,485 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 220 SyntacticMatches, 9 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=170, Invalid=292, Unknown=0, NotChecked=0, Total=462 [2024-09-12 18:24:27,485 INFO L434 NwaCegarLoop]: 90 mSDtfsCounter, 130 mSDsluCounter, 336 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 426 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 18:24:27,485 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 426 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 18:24:27,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4002 states. [2024-09-12 18:24:30,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4002 to 3898. [2024-09-12 18:24:30,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3898 states, 3838 states have (on average 1.1253256904637832) internal successors, (4319), 3859 states have internal predecessors, (4319), 20 states have call successors, (20), 20 states have call predecessors, (20), 33 states have return successors, (33), 18 states have call predecessors, (33), 18 states have call successors, (33) [2024-09-12 18:24:30,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3898 states to 3898 states and 4372 transitions. [2024-09-12 18:24:30,457 INFO L78 Accepts]: Start accepts. Automaton has 3898 states and 4372 transitions. Word has length 113 [2024-09-12 18:24:30,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:24:30,457 INFO L474 AbstractCegarLoop]: Abstraction has 3898 states and 4372 transitions. [2024-09-12 18:24:30,457 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.133333333333334) internal successors, (92), 15 states have internal predecessors, (92), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-09-12 18:24:30,457 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:24:30,457 INFO L276 IsEmpty]: Start isEmpty. Operand 3898 states and 4372 transitions. [2024-09-12 18:24:30,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-09-12 18:24:30,460 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:24:30,460 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:24:30,474 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Forceful destruction successful, exit code 0 [2024-09-12 18:24:30,661 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97,80 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:24:30,661 INFO L399 AbstractCegarLoop]: === Iteration 99 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [correct_versionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, correct_versionErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, correct_versionErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-09-12 18:24:30,661 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:24:30,661 INFO L85 PathProgramCache]: Analyzing trace with hash 1106401742, now seen corresponding path program 26 times [2024-09-12 18:24:30,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:24:30,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581535877] [2024-09-12 18:24:30,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:24:30,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:24:30,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:24:30,697 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:24:30,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:24:30,699 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-12 18:24:30,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:24:30,746 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-12 18:24:30,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:24:30,751 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 34 proven. 18 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-09-12 18:24:30,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:24:30,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581535877] [2024-09-12 18:24:30,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581535877] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:24:30,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1476145290] [2024-09-12 18:24:30,751 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 18:24:30,751 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:24:30,751 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:24:30,752 INFO L229 MonitoredProcess]: Starting monitored process 81 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 18:24:30,753 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Waiting until timeout for monitored process [2024-09-12 18:24:30,808 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 18:24:30,809 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 18:24:30,810 INFO L262 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-09-12 18:24:30,811 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:24:30,878 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 34 proven. 18 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-09-12 18:24:30,879 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:24:30,957 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 34 proven. 18 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-09-12 18:24:30,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1476145290] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:24:30,957 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:24:30,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 15 [2024-09-12 18:24:30,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933957358] [2024-09-12 18:24:30,957 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:24:30,957 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-09-12 18:24:30,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:24:30,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-09-12 18:24:30,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=131, Unknown=0, NotChecked=0, Total=210 [2024-09-12 18:24:30,958 INFO L87 Difference]: Start difference. First operand 3898 states and 4372 transitions. Second operand has 15 states, 15 states have (on average 7.533333333333333) internal successors, (113), 15 states have internal predecessors, (113), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-09-12 18:24:34,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:24:34,329 INFO L93 Difference]: Finished difference Result 5441 states and 6106 transitions. [2024-09-12 18:24:34,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-09-12 18:24:34,330 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 7.533333333333333) internal successors, (113), 15 states have internal predecessors, (113), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 113 [2024-09-12 18:24:34,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:24:34,338 INFO L225 Difference]: With dead ends: 5441 [2024-09-12 18:24:34,338 INFO L226 Difference]: Without dead ends: 4004 [2024-09-12 18:24:34,341 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 220 SyntacticMatches, 9 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=170, Invalid=292, Unknown=0, NotChecked=0, Total=462 [2024-09-12 18:24:34,341 INFO L434 NwaCegarLoop]: 89 mSDtfsCounter, 115 mSDsluCounter, 389 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 478 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 18:24:34,341 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 478 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 18:24:34,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4004 states. [2024-09-12 18:24:37,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4004 to 3953. [2024-09-12 18:24:37,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3953 states, 3893 states have (on average 1.120215771898279) internal successors, (4361), 3914 states have internal predecessors, (4361), 20 states have call successors, (20), 20 states have call predecessors, (20), 33 states have return successors, (33), 18 states have call predecessors, (33), 18 states have call successors, (33) [2024-09-12 18:24:37,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3953 states to 3953 states and 4414 transitions. [2024-09-12 18:24:37,476 INFO L78 Accepts]: Start accepts. Automaton has 3953 states and 4414 transitions. Word has length 113 [2024-09-12 18:24:37,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:24:37,477 INFO L474 AbstractCegarLoop]: Abstraction has 3953 states and 4414 transitions. [2024-09-12 18:24:37,477 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 7.533333333333333) internal successors, (113), 15 states have internal predecessors, (113), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-09-12 18:24:37,477 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:24:37,477 INFO L276 IsEmpty]: Start isEmpty. Operand 3953 states and 4414 transitions. [2024-09-12 18:24:37,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2024-09-12 18:24:37,480 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:24:37,480 INFO L216 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 1, 1, 1, 1, 1, 1] [2024-09-12 18:24:37,493 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Ended with exit code 0 [2024-09-12 18:24:37,680 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98,81 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:24:37,680 INFO L399 AbstractCegarLoop]: === Iteration 100 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [correct_versionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, correct_versionErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, correct_versionErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-09-12 18:24:37,680 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:24:37,681 INFO L85 PathProgramCache]: Analyzing trace with hash -1275411427, now seen corresponding path program 27 times [2024-09-12 18:24:37,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:24:37,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078361628] [2024-09-12 18:24:37,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:24:37,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:24:37,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:24:37,798 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:24:37,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:24:37,799 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-12 18:24:37,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:24:37,901 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-09-12 18:24:37,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:24:38,077 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 0 proven. 226 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-12 18:24:38,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:24:38,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078361628] [2024-09-12 18:24:38,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078361628] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:24:38,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [661048652] [2024-09-12 18:24:38,078 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-12 18:24:38,078 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:24:38,078 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:24:38,079 INFO L229 MonitoredProcess]: Starting monitored process 82 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 18:24:38,080 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Waiting until timeout for monitored process [2024-09-12 18:24:38,140 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2024-09-12 18:24:38,140 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 18:24:38,142 INFO L262 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 55 conjuncts are in the unsatisfiable core [2024-09-12 18:24:38,143 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:24:38,316 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 0 proven. 226 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-12 18:24:38,316 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:24:38,453 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 0 proven. 226 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-12 18:24:38,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [661048652] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:24:38,453 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:24:38,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30, 30] total 36 [2024-09-12 18:24:38,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909275820] [2024-09-12 18:24:38,453 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:24:38,453 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-09-12 18:24:38,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:24:38,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-09-12 18:24:38,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=1181, Unknown=0, NotChecked=0, Total=1260 [2024-09-12 18:24:38,454 INFO L87 Difference]: Start difference. First operand 3953 states and 4414 transitions. Second operand has 36 states, 31 states have (on average 3.903225806451613) internal successors, (121), 31 states have internal predecessors, (121), 4 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2024-09-12 18:24:43,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:24:43,119 INFO L93 Difference]: Finished difference Result 4307 states and 4790 transitions. [2024-09-12 18:24:43,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-09-12 18:24:43,119 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 31 states have (on average 3.903225806451613) internal successors, (121), 31 states have internal predecessors, (121), 4 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) Word has length 118 [2024-09-12 18:24:43,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:24:43,127 INFO L225 Difference]: With dead ends: 4307 [2024-09-12 18:24:43,128 INFO L226 Difference]: Without dead ends: 4291 [2024-09-12 18:24:43,128 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 233 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=105, Invalid=1617, Unknown=0, NotChecked=0, Total=1722 [2024-09-12 18:24:43,128 INFO L434 NwaCegarLoop]: 176 mSDtfsCounter, 156 mSDsluCounter, 5021 mSDsCounter, 0 mSdLazyCounter, 3001 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 5197 SdHoareTripleChecker+Invalid, 3003 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 3001 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-09-12 18:24:43,129 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [162 Valid, 5197 Invalid, 3003 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 3001 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-09-12 18:24:43,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4291 states.