./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loop-invgen/string_concat-noarr.i --full-output --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --cacsl2boogietranslator.check.absence.of.signed.integer.overflows true --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a9b967e5 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/certificate-witnesses-artifact/automizer/data/config -Xmx15G -Xms4m -jar /storage/repos/certificate-witnesses-artifact/automizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/certificate-witnesses-artifact/automizer/data -tc /storage/repos/certificate-witnesses-artifact/automizer/config/AutomizerReach.xml -i ../sv-benchmarks/c/loop-invgen/string_concat-noarr.i -s /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/certificate-witnesses-artifact/automizer --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 30a4b942034eaa47a8fcc8fdf4549d1d63a9a60d59b585da2a353c9626604750 --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 18:01:27,717 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-12 18:01:27,792 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-12 18:01:27,797 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-12 18:01:27,798 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-12 18:01:27,817 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-12 18:01:27,818 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-12 18:01:27,818 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-12 18:01:27,819 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-12 18:01:27,819 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-12 18:01:27,819 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-12 18:01:27,820 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-12 18:01:27,821 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-12 18:01:27,821 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-12 18:01:27,821 INFO L153 SettingsManager]: * Use SBE=true [2024-09-12 18:01:27,822 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-12 18:01:27,822 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-12 18:01:27,822 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-12 18:01:27,823 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-12 18:01:27,823 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-12 18:01:27,823 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-12 18:01:27,827 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-12 18:01:27,828 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-12 18:01:27,828 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-12 18:01:27,828 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-12 18:01:27,828 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-12 18:01:27,829 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-12 18:01:27,829 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-12 18:01:27,829 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-12 18:01:27,830 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-12 18:01:27,830 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-12 18:01:27,830 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-12 18:01:27,830 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-12 18:01:27,831 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-12 18:01:27,831 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-12 18:01:27,836 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-12 18:01:27,836 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-12 18:01:27,836 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-12 18:01:27,839 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-12 18:01:27,839 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-12 18:01:27,839 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-12 18:01:27,840 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-12 18:01:27,840 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 30a4b942034eaa47a8fcc8fdf4549d1d63a9a60d59b585da2a353c9626604750 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2024-09-12 18:01:28,207 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-12 18:01:28,234 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-12 18:01:28,237 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-12 18:01:28,238 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-12 18:01:28,239 INFO L274 PluginConnector]: CDTParser initialized [2024-09-12 18:01:28,240 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/loop-invgen/string_concat-noarr.i [2024-09-12 18:01:30,031 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-12 18:01:30,271 INFO L384 CDTParser]: Found 1 translation units. [2024-09-12 18:01:30,271 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-invgen/string_concat-noarr.i [2024-09-12 18:01:30,281 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/03a038021/d4444ab95aee444c9da151c44c902ba6/FLAG3fea87bc5 [2024-09-12 18:01:30,629 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/03a038021/d4444ab95aee444c9da151c44c902ba6 [2024-09-12 18:01:30,635 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-12 18:01:30,637 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-12 18:01:30,638 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-12 18:01:30,638 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-12 18:01:30,646 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-12 18:01:30,647 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.09 06:01:30" (1/1) ... [2024-09-12 18:01:30,648 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ed29236 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 06:01:30, skipping insertion in model container [2024-09-12 18:01:30,648 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.09 06:01:30" (1/1) ... [2024-09-12 18:01:30,670 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-12 18:01:30,852 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-invgen/string_concat-noarr.i[893,906] [2024-09-12 18:01:30,875 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-12 18:01:30,887 INFO L200 MainTranslator]: Completed pre-run [2024-09-12 18:01:30,902 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-invgen/string_concat-noarr.i[893,906] [2024-09-12 18:01:30,906 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-12 18:01:30,930 INFO L204 MainTranslator]: Completed translation [2024-09-12 18:01:30,930 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 06:01:30 WrapperNode [2024-09-12 18:01:30,931 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-12 18:01:30,932 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-12 18:01:30,933 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-12 18:01:30,933 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-12 18:01:30,939 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 06:01:30" (1/1) ... [2024-09-12 18:01:30,948 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 06:01:30" (1/1) ... [2024-09-12 18:01:30,962 INFO L138 Inliner]: procedures = 16, calls = 7, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-12 18:01:30,966 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-12 18:01:30,967 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-12 18:01:30,967 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-12 18:01:30,967 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-12 18:01:30,980 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 06:01:30" (1/1) ... [2024-09-12 18:01:30,981 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 06:01:30" (1/1) ... [2024-09-12 18:01:30,983 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 06:01:30" (1/1) ... [2024-09-12 18:01:31,014 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 18:01:31,015 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 06:01:30" (1/1) ... [2024-09-12 18:01:31,015 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 06:01:30" (1/1) ... [2024-09-12 18:01:31,018 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 06:01:30" (1/1) ... [2024-09-12 18:01:31,022 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 06:01:30" (1/1) ... [2024-09-12 18:01:31,023 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 06:01:30" (1/1) ... [2024-09-12 18:01:31,027 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 06:01:30" (1/1) ... [2024-09-12 18:01:31,028 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-12 18:01:31,029 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-12 18:01:31,029 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-12 18:01:31,029 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-12 18:01:31,030 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 06:01:30" (1/1) ... [2024-09-12 18:01:31,036 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-12 18:01:31,053 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:01:31,069 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 18:01:31,081 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 18:01:31,130 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-12 18:01:31,132 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-12 18:01:31,132 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-12 18:01:31,132 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-12 18:01:31,132 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-12 18:01:31,132 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-12 18:01:31,133 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-12 18:01:31,134 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-12 18:01:31,134 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-12 18:01:31,135 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-12 18:01:31,200 INFO L242 CfgBuilder]: Building ICFG [2024-09-12 18:01:31,202 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-12 18:01:31,352 INFO L? ?]: Removed 15 outVars from TransFormulas that were not future-live. [2024-09-12 18:01:31,353 INFO L291 CfgBuilder]: Performing block encoding [2024-09-12 18:01:31,379 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-12 18:01:31,380 INFO L318 CfgBuilder]: Removed 2 assume(true) statements. [2024-09-12 18:01:31,381 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.09 06:01:31 BoogieIcfgContainer [2024-09-12 18:01:31,381 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-12 18:01:31,384 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-12 18:01:31,385 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-12 18:01:31,388 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-12 18:01:31,388 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.09 06:01:30" (1/3) ... [2024-09-12 18:01:31,389 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32e48235 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.09 06:01:31, skipping insertion in model container [2024-09-12 18:01:31,390 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 06:01:30" (2/3) ... [2024-09-12 18:01:31,390 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32e48235 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.09 06:01:31, skipping insertion in model container [2024-09-12 18:01:31,391 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.09 06:01:31" (3/3) ... [2024-09-12 18:01:31,392 INFO L112 eAbstractionObserver]: Analyzing ICFG string_concat-noarr.i [2024-09-12 18:01:31,410 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-12 18:01:31,410 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2024-09-12 18:01:31,481 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-12 18:01:31,490 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;@31557d35, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-12 18:01:31,491 INFO L337 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-09-12 18:01:31,496 INFO L276 IsEmpty]: Start isEmpty. Operand has 35 states, 21 states have (on average 1.6666666666666667) internal successors, (35), 28 states have internal predecessors, (35), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-12 18:01:31,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-09-12 18:01:31,504 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:01:31,506 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:01:31,506 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2024-09-12 18:01:31,512 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:01:31,512 INFO L85 PathProgramCache]: Analyzing trace with hash 1787312389, now seen corresponding path program 1 times [2024-09-12 18:01:31,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:01:31,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308086951] [2024-09-12 18:01:31,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:01:31,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:01:31,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:01:31,776 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:01:31,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:01:31,792 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 18:01:31,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:01:31,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308086951] [2024-09-12 18:01:31,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308086951] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 18:01:31,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 18:01:31,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-12 18:01:31,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403789863] [2024-09-12 18:01:31,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 18:01:31,801 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-09-12 18:01:31,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:01:31,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-09-12 18:01:31,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-09-12 18:01:31,830 INFO L87 Difference]: Start difference. First operand has 35 states, 21 states have (on average 1.6666666666666667) internal successors, (35), 28 states have internal predecessors, (35), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:01:31,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:01:31,946 INFO L93 Difference]: Finished difference Result 73 states and 92 transitions. [2024-09-12 18:01:31,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-12 18:01:31,949 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 8 [2024-09-12 18:01:31,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:01:31,955 INFO L225 Difference]: With dead ends: 73 [2024-09-12 18:01:31,955 INFO L226 Difference]: Without dead ends: 37 [2024-09-12 18:01:31,959 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-09-12 18:01:31,965 INFO L434 NwaCegarLoop]: 28 mSDtfsCounter, 9 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 18:01:31,966 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 80 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 18:01:31,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2024-09-12 18:01:31,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 32. [2024-09-12 18:01:31,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 21 states have (on average 1.4285714285714286) internal successors, (30), 27 states have internal predecessors, (30), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:01:31,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 34 transitions. [2024-09-12 18:01:32,000 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 34 transitions. Word has length 8 [2024-09-12 18:01:32,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:01:32,000 INFO L474 AbstractCegarLoop]: Abstraction has 32 states and 34 transitions. [2024-09-12 18:01:32,001 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:01:32,001 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:01:32,002 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 34 transitions. [2024-09-12 18:01:32,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-09-12 18:01:32,002 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:01:32,003 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:01:32,003 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-12 18:01:32,003 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2024-09-12 18:01:32,004 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:01:32,004 INFO L85 PathProgramCache]: Analyzing trace with hash 1112357553, now seen corresponding path program 1 times [2024-09-12 18:01:32,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:01:32,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400307850] [2024-09-12 18:01:32,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:01:32,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:01:32,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:01:32,065 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:01:32,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:01:32,071 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 18:01:32,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:01:32,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400307850] [2024-09-12 18:01:32,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400307850] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 18:01:32,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 18:01:32,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-12 18:01:32,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591928834] [2024-09-12 18:01:32,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 18:01:32,074 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-09-12 18:01:32,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:01:32,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-09-12 18:01:32,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-09-12 18:01:32,075 INFO L87 Difference]: Start difference. First operand 32 states and 34 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:01:32,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:01:32,122 INFO L93 Difference]: Finished difference Result 41 states and 44 transitions. [2024-09-12 18:01:32,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-12 18:01:32,123 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2024-09-12 18:01:32,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:01:32,124 INFO L225 Difference]: With dead ends: 41 [2024-09-12 18:01:32,124 INFO L226 Difference]: Without dead ends: 39 [2024-09-12 18:01:32,125 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-09-12 18:01:32,126 INFO L434 NwaCegarLoop]: 20 mSDtfsCounter, 3 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 57 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 18:01:32,126 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 57 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 18:01:32,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2024-09-12 18:01:32,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 37. [2024-09-12 18:01:32,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 26 states have (on average 1.3846153846153846) internal successors, (36), 32 states have internal predecessors, (36), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:01:32,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 40 transitions. [2024-09-12 18:01:32,133 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 40 transitions. Word has length 11 [2024-09-12 18:01:32,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:01:32,133 INFO L474 AbstractCegarLoop]: Abstraction has 37 states and 40 transitions. [2024-09-12 18:01:32,134 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:01:32,134 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:01:32,134 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 40 transitions. [2024-09-12 18:01:32,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-09-12 18:01:32,135 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:01:32,135 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:01:32,135 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-09-12 18:01:32,135 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2024-09-12 18:01:32,136 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:01:32,136 INFO L85 PathProgramCache]: Analyzing trace with hash 170000638, now seen corresponding path program 1 times [2024-09-12 18:01:32,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:01:32,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485622255] [2024-09-12 18:01:32,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:01:32,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:01:32,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:01:32,213 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:01:32,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:01:32,218 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 18:01:32,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:01:32,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485622255] [2024-09-12 18:01:32,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485622255] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:01:32,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [647514646] [2024-09-12 18:01:32,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:01:32,220 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:01:32,220 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:01:32,222 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 18:01:32,224 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 18:01:32,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:01:32,264 INFO L262 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-09-12 18:01:32,267 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:01:32,318 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:01:32,319 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-12 18:01:32,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [647514646] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 18:01:32,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-12 18:01:32,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-09-12 18:01:32,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010797860] [2024-09-12 18:01:32,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 18:01:32,320 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-12 18:01:32,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:01:32,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-12 18:01:32,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-09-12 18:01:32,321 INFO L87 Difference]: Start difference. First operand 37 states and 40 transitions. Second operand has 6 states, 5 states have (on average 1.8) internal successors, (9), 6 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:01:32,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:01:32,404 INFO L93 Difference]: Finished difference Result 43 states and 47 transitions. [2024-09-12 18:01:32,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-12 18:01:32,405 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 6 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2024-09-12 18:01:32,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:01:32,406 INFO L225 Difference]: With dead ends: 43 [2024-09-12 18:01:32,406 INFO L226 Difference]: Without dead ends: 42 [2024-09-12 18:01:32,406 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-09-12 18:01:32,407 INFO L434 NwaCegarLoop]: 22 mSDtfsCounter, 11 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 18:01:32,408 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 79 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 18:01:32,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2024-09-12 18:01:32,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 36. [2024-09-12 18:01:32,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 26 states have (on average 1.3461538461538463) internal successors, (35), 31 states have internal predecessors, (35), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:01:32,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 39 transitions. [2024-09-12 18:01:32,433 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 39 transitions. Word has length 12 [2024-09-12 18:01:32,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:01:32,440 INFO L474 AbstractCegarLoop]: Abstraction has 36 states and 39 transitions. [2024-09-12 18:01:32,440 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 6 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:01:32,440 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:01:32,440 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 39 transitions. [2024-09-12 18:01:32,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-09-12 18:01:32,441 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:01:32,441 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:01:32,491 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 18:01:32,643 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:01:32,643 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2024-09-12 18:01:32,644 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:01:32,644 INFO L85 PathProgramCache]: Analyzing trace with hash 975052533, now seen corresponding path program 1 times [2024-09-12 18:01:32,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:01:32,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578987641] [2024-09-12 18:01:32,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:01:32,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:01:32,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:01:32,703 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:01:32,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:01:32,707 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-12 18:01:32,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:01:32,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578987641] [2024-09-12 18:01:32,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578987641] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 18:01:32,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 18:01:32,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-12 18:01:32,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767400948] [2024-09-12 18:01:32,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 18:01:32,709 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-12 18:01:32,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:01:32,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-12 18:01:32,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-12 18:01:32,710 INFO L87 Difference]: Start difference. First operand 36 states and 39 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:01:32,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:01:32,725 INFO L93 Difference]: Finished difference Result 36 states and 39 transitions. [2024-09-12 18:01:32,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-12 18:01:32,726 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2024-09-12 18:01:32,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:01:32,727 INFO L225 Difference]: With dead ends: 36 [2024-09-12 18:01:32,727 INFO L226 Difference]: Without dead ends: 35 [2024-09-12 18:01:32,727 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 18:01:32,728 INFO L434 NwaCegarLoop]: 23 mSDtfsCounter, 0 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 18:01:32,729 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 45 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 18:01:32,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2024-09-12 18:01:32,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 33. [2024-09-12 18:01:32,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 24 states have (on average 1.3333333333333333) internal successors, (32), 28 states have internal predecessors, (32), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:01:32,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 36 transitions. [2024-09-12 18:01:32,738 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 36 transitions. Word has length 13 [2024-09-12 18:01:32,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:01:32,739 INFO L474 AbstractCegarLoop]: Abstraction has 33 states and 36 transitions. [2024-09-12 18:01:32,739 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:01:32,739 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:01:32,739 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 36 transitions. [2024-09-12 18:01:32,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-09-12 18:01:32,740 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:01:32,740 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:01:32,740 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-09-12 18:01:32,740 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2024-09-12 18:01:32,740 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:01:32,740 INFO L85 PathProgramCache]: Analyzing trace with hash -471245901, now seen corresponding path program 1 times [2024-09-12 18:01:32,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:01:32,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612786139] [2024-09-12 18:01:32,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:01:32,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:01:32,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:01:32,817 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:01:32,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:01:32,824 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 18:01:32,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:01:32,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612786139] [2024-09-12 18:01:32,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612786139] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 18:01:32,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 18:01:32,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-12 18:01:32,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435453838] [2024-09-12 18:01:32,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 18:01:32,828 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-09-12 18:01:32,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:01:32,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-09-12 18:01:32,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-09-12 18:01:32,832 INFO L87 Difference]: Start difference. First operand 33 states and 36 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:01:32,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:01:32,872 INFO L93 Difference]: Finished difference Result 44 states and 48 transitions. [2024-09-12 18:01:32,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-12 18:01:32,873 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2024-09-12 18:01:32,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:01:32,874 INFO L225 Difference]: With dead ends: 44 [2024-09-12 18:01:32,874 INFO L226 Difference]: Without dead ends: 42 [2024-09-12 18:01:32,874 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-09-12 18:01:32,875 INFO L434 NwaCegarLoop]: 21 mSDtfsCounter, 4 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 18:01:32,876 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 60 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 18:01:32,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2024-09-12 18:01:32,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 39. [2024-09-12 18:01:32,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 30 states have (on average 1.3666666666666667) internal successors, (41), 34 states have internal predecessors, (41), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:01:32,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 45 transitions. [2024-09-12 18:01:32,886 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 45 transitions. Word has length 13 [2024-09-12 18:01:32,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:01:32,886 INFO L474 AbstractCegarLoop]: Abstraction has 39 states and 45 transitions. [2024-09-12 18:01:32,886 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:01:32,887 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:01:32,887 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 45 transitions. [2024-09-12 18:01:32,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-09-12 18:01:32,887 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:01:32,887 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:01:32,888 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-09-12 18:01:32,888 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2024-09-12 18:01:32,888 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:01:32,889 INFO L85 PathProgramCache]: Analyzing trace with hash -1939103051, now seen corresponding path program 1 times [2024-09-12 18:01:32,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:01:32,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964897194] [2024-09-12 18:01:32,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:01:32,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:01:32,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:01:32,946 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:01:32,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:01:32,950 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 18:01:32,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:01:32,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964897194] [2024-09-12 18:01:32,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964897194] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 18:01:32,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 18:01:32,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-12 18:01:32,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841039796] [2024-09-12 18:01:32,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 18:01:32,952 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-12 18:01:32,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:01:32,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-12 18:01:32,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-12 18:01:32,953 INFO L87 Difference]: Start difference. First operand 39 states and 45 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 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 18:01:33,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:01:33,000 INFO L93 Difference]: Finished difference Result 45 states and 50 transitions. [2024-09-12 18:01:33,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-12 18:01:33,001 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 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 18:01:33,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:01:33,002 INFO L225 Difference]: With dead ends: 45 [2024-09-12 18:01:33,002 INFO L226 Difference]: Without dead ends: 39 [2024-09-12 18:01:33,002 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 18:01:33,003 INFO L434 NwaCegarLoop]: 19 mSDtfsCounter, 1 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 18:01:33,003 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 72 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 18:01:33,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2024-09-12 18:01:33,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2024-09-12 18:01:33,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 30 states have (on average 1.3) internal successors, (39), 34 states have internal predecessors, (39), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:01:33,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2024-09-12 18:01:33,009 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 15 [2024-09-12 18:01:33,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:01:33,010 INFO L474 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2024-09-12 18:01:33,010 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 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 18:01:33,010 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:01:33,011 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2024-09-12 18:01:33,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-09-12 18:01:33,011 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:01:33,011 INFO L216 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:01:33,012 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-09-12 18:01:33,012 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2024-09-12 18:01:33,012 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:01:33,012 INFO L85 PathProgramCache]: Analyzing trace with hash 721110040, now seen corresponding path program 1 times [2024-09-12 18:01:33,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:01:33,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079851614] [2024-09-12 18:01:33,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:01:33,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:01:33,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:01:33,072 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:01:33,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:01:33,075 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 18:01:33,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:01:33,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079851614] [2024-09-12 18:01:33,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079851614] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:01:33,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [12729032] [2024-09-12 18:01:33,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:01:33,076 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:01:33,077 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:01:33,079 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 18:01:33,086 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 18:01:33,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:01:33,128 INFO L262 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-09-12 18:01:33,131 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:01:33,183 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 18:01:33,184 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-12 18:01:33,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [12729032] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 18:01:33,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-12 18:01:33,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-09-12 18:01:33,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772842056] [2024-09-12 18:01:33,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 18:01:33,185 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-12 18:01:33,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:01:33,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-12 18:01:33,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-09-12 18:01:33,186 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:01:33,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:01:33,232 INFO L93 Difference]: Finished difference Result 52 states and 58 transitions. [2024-09-12 18:01:33,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-12 18:01:33,233 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2024-09-12 18:01:33,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:01:33,234 INFO L225 Difference]: With dead ends: 52 [2024-09-12 18:01:33,234 INFO L226 Difference]: Without dead ends: 51 [2024-09-12 18:01:33,234 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-09-12 18:01:33,235 INFO L434 NwaCegarLoop]: 26 mSDtfsCounter, 16 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 18:01:33,235 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 93 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 18:01:33,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2024-09-12 18:01:33,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 47. [2024-09-12 18:01:33,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 38 states have (on average 1.3157894736842106) internal successors, (50), 42 states have internal predecessors, (50), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:01:33,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 54 transitions. [2024-09-12 18:01:33,243 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 54 transitions. Word has length 15 [2024-09-12 18:01:33,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:01:33,243 INFO L474 AbstractCegarLoop]: Abstraction has 47 states and 54 transitions. [2024-09-12 18:01:33,243 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:01:33,243 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:01:33,243 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 54 transitions. [2024-09-12 18:01:33,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-09-12 18:01:33,244 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:01:33,244 INFO L216 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:01:33,263 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-09-12 18:01:33,445 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-09-12 18:01:33,446 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2024-09-12 18:01:33,446 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:01:33,446 INFO L85 PathProgramCache]: Analyzing trace with hash 879574834, now seen corresponding path program 1 times [2024-09-12 18:01:33,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:01:33,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722749560] [2024-09-12 18:01:33,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:01:33,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:01:33,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:01:33,471 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:01:33,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:01:33,475 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-12 18:01:33,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:01:33,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722749560] [2024-09-12 18:01:33,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722749560] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 18:01:33,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 18:01:33,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-12 18:01:33,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583437715] [2024-09-12 18:01:33,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 18:01:33,480 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-09-12 18:01:33,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:01:33,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-09-12 18:01:33,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-09-12 18:01:33,481 INFO L87 Difference]: Start difference. First operand 47 states and 54 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:01:33,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:01:33,515 INFO L93 Difference]: Finished difference Result 48 states and 54 transitions. [2024-09-12 18:01:33,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-12 18:01:33,516 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2024-09-12 18:01:33,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:01:33,516 INFO L225 Difference]: With dead ends: 48 [2024-09-12 18:01:33,517 INFO L226 Difference]: Without dead ends: 47 [2024-09-12 18:01:33,517 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-09-12 18:01:33,518 INFO L434 NwaCegarLoop]: 19 mSDtfsCounter, 2 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 18:01:33,518 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 53 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 18:01:33,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2024-09-12 18:01:33,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2024-09-12 18:01:33,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 38 states have (on average 1.2894736842105263) internal successors, (49), 42 states have internal predecessors, (49), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:01:33,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 53 transitions. [2024-09-12 18:01:33,524 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 53 transitions. Word has length 16 [2024-09-12 18:01:33,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:01:33,525 INFO L474 AbstractCegarLoop]: Abstraction has 47 states and 53 transitions. [2024-09-12 18:01:33,525 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:01:33,525 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:01:33,525 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 53 transitions. [2024-09-12 18:01:33,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-09-12 18:01:33,526 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:01:33,526 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:01:33,526 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-09-12 18:01:33,526 INFO L399 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2024-09-12 18:01:33,527 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:01:33,527 INFO L85 PathProgramCache]: Analyzing trace with hash -742212632, now seen corresponding path program 1 times [2024-09-12 18:01:33,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:01:33,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582431422] [2024-09-12 18:01:33,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:01:33,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:01:33,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:01:33,575 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:01:33,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:01:33,579 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 18:01:33,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:01:33,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582431422] [2024-09-12 18:01:33,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582431422] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:01:33,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [191898744] [2024-09-12 18:01:33,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:01:33,580 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:01:33,580 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:01:33,582 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 18:01:33,585 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 18:01:33,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:01:33,622 INFO L262 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-09-12 18:01:33,623 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:01:33,656 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:01:33,656 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-12 18:01:33,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [191898744] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 18:01:33,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-12 18:01:33,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2024-09-12 18:01:33,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162449407] [2024-09-12 18:01:33,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 18:01:33,658 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-12 18:01:33,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:01:33,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-12 18:01:33,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-09-12 18:01:33,659 INFO L87 Difference]: Start difference. First operand 47 states and 53 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:01:33,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:01:33,703 INFO L93 Difference]: Finished difference Result 47 states and 53 transitions. [2024-09-12 18:01:33,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-12 18:01:33,704 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2024-09-12 18:01:33,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:01:33,706 INFO L225 Difference]: With dead ends: 47 [2024-09-12 18:01:33,706 INFO L226 Difference]: Without dead ends: 46 [2024-09-12 18:01:33,706 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-09-12 18:01:33,707 INFO L434 NwaCegarLoop]: 16 mSDtfsCounter, 8 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 18:01:33,707 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 42 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 18:01:33,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2024-09-12 18:01:33,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 31. [2024-09-12 18:01:33,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 26 states have internal predecessors, (28), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:01:33,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 32 transitions. [2024-09-12 18:01:33,719 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 32 transitions. Word has length 17 [2024-09-12 18:01:33,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:01:33,719 INFO L474 AbstractCegarLoop]: Abstraction has 31 states and 32 transitions. [2024-09-12 18:01:33,720 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:01:33,722 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:01:33,722 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 32 transitions. [2024-09-12 18:01:33,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-09-12 18:01:33,726 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:01:33,727 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:01:33,747 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 18:01:33,927 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-09-12 18:01:33,928 INFO L399 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2024-09-12 18:01:33,928 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:01:33,928 INFO L85 PathProgramCache]: Analyzing trace with hash -1533755038, now seen corresponding path program 1 times [2024-09-12 18:01:33,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:01:33,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670999194] [2024-09-12 18:01:33,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:01:33,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:01:33,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:01:33,962 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:01:33,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:01:33,968 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-12 18:01:33,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:01:33,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670999194] [2024-09-12 18:01:33,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670999194] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 18:01:33,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 18:01:33,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-12 18:01:33,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162015535] [2024-09-12 18:01:33,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 18:01:33,970 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-12 18:01:33,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:01:33,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-12 18:01:33,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-12 18:01:33,971 INFO L87 Difference]: Start difference. First operand 31 states and 32 transitions. Second operand has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:01:33,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:01:33,985 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2024-09-12 18:01:33,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-12 18:01:33,988 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2024-09-12 18:01:33,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:01:33,989 INFO L225 Difference]: With dead ends: 31 [2024-09-12 18:01:33,989 INFO L226 Difference]: Without dead ends: 30 [2024-09-12 18:01:33,989 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 18:01:33,990 INFO L434 NwaCegarLoop]: 21 mSDtfsCounter, 0 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 18:01:33,990 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 41 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 18:01:33,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-09-12 18:01:34,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2024-09-12 18:01:34,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 23 states have (on average 1.173913043478261) internal successors, (27), 25 states have internal predecessors, (27), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:01:34,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2024-09-12 18:01:34,005 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 18 [2024-09-12 18:01:34,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:01:34,006 INFO L474 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2024-09-12 18:01:34,007 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:01:34,007 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:01:34,007 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2024-09-12 18:01:34,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-09-12 18:01:34,009 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:01:34,009 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:01:34,009 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-09-12 18:01:34,009 INFO L399 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2024-09-12 18:01:34,011 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:01:34,012 INFO L85 PathProgramCache]: Analyzing trace with hash -301765846, now seen corresponding path program 1 times [2024-09-12 18:01:34,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:01:34,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207099492] [2024-09-12 18:01:34,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:01:34,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:01:34,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:01:34,087 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:01:34,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:01:34,090 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 18:01:34,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:01:34,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207099492] [2024-09-12 18:01:34,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207099492] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:01:34,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1930315297] [2024-09-12 18:01:34,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:01:34,096 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:01:34,096 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:01:34,098 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 18:01:34,104 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 18:01:34,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:01:34,141 INFO L262 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-09-12 18:01:34,142 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:01:34,203 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:01:34,207 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-12 18:01:34,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1930315297] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 18:01:34,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-12 18:01:34,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-09-12 18:01:34,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504521623] [2024-09-12 18:01:34,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 18:01:34,208 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-12 18:01:34,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:01:34,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-12 18:01:34,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-09-12 18:01:34,209 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. Second operand has 6 states, 5 states have (on average 3.2) internal successors, (16), 6 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:01:34,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:01:34,243 INFO L93 Difference]: Finished difference Result 30 states and 31 transitions. [2024-09-12 18:01:34,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-12 18:01:34,243 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 6 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2024-09-12 18:01:34,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:01:34,244 INFO L225 Difference]: With dead ends: 30 [2024-09-12 18:01:34,244 INFO L226 Difference]: Without dead ends: 29 [2024-09-12 18:01:34,244 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-09-12 18:01:34,245 INFO L434 NwaCegarLoop]: 20 mSDtfsCounter, 2 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 18:01:34,245 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 67 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 18:01:34,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-09-12 18:01:34,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2024-09-12 18:01:34,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 23 states have (on average 1.1304347826086956) internal successors, (26), 24 states have internal predecessors, (26), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:01:34,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2024-09-12 18:01:34,258 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 19 [2024-09-12 18:01:34,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:01:34,258 INFO L474 AbstractCegarLoop]: Abstraction has 29 states and 30 transitions. [2024-09-12 18:01:34,258 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 6 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:01:34,258 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:01:34,259 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions. [2024-09-12 18:01:34,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-09-12 18:01:34,259 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:01:34,259 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 18:01:34,285 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-09-12 18:01:34,459 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:01:34,460 INFO L399 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2024-09-12 18:01:34,461 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:01:34,461 INFO L85 PathProgramCache]: Analyzing trace with hash 2017439852, now seen corresponding path program 1 times [2024-09-12 18:01:34,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:01:34,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897841733] [2024-09-12 18:01:34,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:01:34,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:01:34,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:01:34,557 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:01:34,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:01:34,560 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 18:01:34,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:01:34,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897841733] [2024-09-12 18:01:34,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897841733] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:01:34,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1938633048] [2024-09-12 18:01:34,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:01:34,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:01:34,561 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:01:34,562 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 18:01:34,564 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 18:01:34,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:01:34,598 INFO L262 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-09-12 18:01:34,600 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:01:34,661 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 18:01:34,661 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:01:34,735 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 18:01:34,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1938633048] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:01:34,736 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:01:34,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2024-09-12 18:01:34,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613857435] [2024-09-12 18:01:34,736 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:01:34,736 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-09-12 18:01:34,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:01:34,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-09-12 18:01:34,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2024-09-12 18:01:34,737 INFO L87 Difference]: Start difference. First operand 29 states and 30 transitions. Second operand has 14 states, 14 states have (on average 2.857142857142857) internal successors, (40), 12 states have internal predecessors, (40), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:01:34,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:01:34,844 INFO L93 Difference]: Finished difference Result 55 states and 58 transitions. [2024-09-12 18:01:34,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-09-12 18:01:34,845 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.857142857142857) internal successors, (40), 12 states have internal predecessors, (40), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 21 [2024-09-12 18:01:34,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:01:34,845 INFO L225 Difference]: With dead ends: 55 [2024-09-12 18:01:34,846 INFO L226 Difference]: Without dead ends: 47 [2024-09-12 18:01:34,846 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 36 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2024-09-12 18:01:34,846 INFO L434 NwaCegarLoop]: 14 mSDtfsCounter, 3 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 18:01:34,847 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 93 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 18:01:34,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2024-09-12 18:01:34,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 46. [2024-09-12 18:01:34,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 40 states have (on average 1.125) internal successors, (45), 41 states have internal predecessors, (45), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:01:34,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 49 transitions. [2024-09-12 18:01:34,860 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 49 transitions. Word has length 21 [2024-09-12 18:01:34,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:01:34,860 INFO L474 AbstractCegarLoop]: Abstraction has 46 states and 49 transitions. [2024-09-12 18:01:34,864 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.857142857142857) internal successors, (40), 12 states have internal predecessors, (40), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:01:34,864 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:01:34,865 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 49 transitions. [2024-09-12 18:01:34,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-09-12 18:01:34,865 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:01:34,865 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:01:34,885 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 18:01:35,066 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-09-12 18:01:35,066 INFO L399 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2024-09-12 18:01:35,067 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:01:35,067 INFO L85 PathProgramCache]: Analyzing trace with hash -764806556, now seen corresponding path program 1 times [2024-09-12 18:01:35,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:01:35,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125418817] [2024-09-12 18:01:35,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:01:35,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:01:35,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:01:35,123 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:01:35,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:01:35,127 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:01:35,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:01:35,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125418817] [2024-09-12 18:01:35,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125418817] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:01:35,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2051472] [2024-09-12 18:01:35,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:01:35,128 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:01:35,128 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:01:35,129 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 18:01:35,133 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 18:01:35,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:01:35,169 INFO L262 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-09-12 18:01:35,170 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:01:35,204 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:01:35,204 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:01:35,264 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:01:35,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2051472] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:01:35,265 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:01:35,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-09-12 18:01:35,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332919339] [2024-09-12 18:01:35,265 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:01:35,267 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-09-12 18:01:35,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:01:35,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-09-12 18:01:35,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-09-12 18:01:35,268 INFO L87 Difference]: Start difference. First operand 46 states and 49 transitions. Second operand has 12 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 12 states have internal predecessors, (37), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:01:35,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:01:35,318 INFO L93 Difference]: Finished difference Result 67 states and 74 transitions. [2024-09-12 18:01:35,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-09-12 18:01:35,318 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 12 states have internal predecessors, (37), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2024-09-12 18:01:35,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:01:35,320 INFO L225 Difference]: With dead ends: 67 [2024-09-12 18:01:35,320 INFO L226 Difference]: Without dead ends: 66 [2024-09-12 18:01:35,320 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-09-12 18:01:35,321 INFO L434 NwaCegarLoop]: 18 mSDtfsCounter, 2 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 18:01:35,321 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 124 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 18:01:35,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2024-09-12 18:01:35,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 64. [2024-09-12 18:01:35,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 58 states have (on average 1.103448275862069) internal successors, (64), 59 states have internal predecessors, (64), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:01:35,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 68 transitions. [2024-09-12 18:01:35,340 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 68 transitions. Word has length 20 [2024-09-12 18:01:35,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:01:35,341 INFO L474 AbstractCegarLoop]: Abstraction has 64 states and 68 transitions. [2024-09-12 18:01:35,342 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 12 states have internal predecessors, (37), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:01:35,342 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:01:35,342 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 68 transitions. [2024-09-12 18:01:35,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-09-12 18:01:35,343 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:01:35,343 INFO L216 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:01:35,367 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-09-12 18:01:35,544 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-09-12 18:01:35,545 INFO L399 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2024-09-12 18:01:35,546 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:01:35,546 INFO L85 PathProgramCache]: Analyzing trace with hash -260131766, now seen corresponding path program 1 times [2024-09-12 18:01:35,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:01:35,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615860479] [2024-09-12 18:01:35,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:01:35,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:01:35,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:01:35,677 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:01:35,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:01:35,680 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:01:35,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:01:35,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615860479] [2024-09-12 18:01:35,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615860479] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:01:35,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2058948733] [2024-09-12 18:01:35,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:01:35,683 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:01:35,683 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:01:35,687 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 18:01:35,691 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 18:01:35,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:01:35,727 INFO L262 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-09-12 18:01:35,728 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:01:35,820 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:01:35,822 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:01:35,956 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:01:35,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2058948733] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:01:35,956 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:01:35,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 22 [2024-09-12 18:01:35,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65954172] [2024-09-12 18:01:35,957 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:01:35,957 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-09-12 18:01:35,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:01:35,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-09-12 18:01:35,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=374, Unknown=0, NotChecked=0, Total=462 [2024-09-12 18:01:35,958 INFO L87 Difference]: Start difference. First operand 64 states and 68 transitions. Second operand has 22 states, 22 states have (on average 2.590909090909091) internal successors, (57), 20 states have internal predecessors, (57), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:01:36,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:01:36,056 INFO L93 Difference]: Finished difference Result 110 states and 118 transitions. [2024-09-12 18:01:36,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-09-12 18:01:36,056 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.590909090909091) internal successors, (57), 20 states have internal predecessors, (57), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 31 [2024-09-12 18:01:36,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:01:36,057 INFO L225 Difference]: With dead ends: 110 [2024-09-12 18:01:36,057 INFO L226 Difference]: Without dead ends: 100 [2024-09-12 18:01:36,057 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 52 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=94, Invalid=412, Unknown=0, NotChecked=0, Total=506 [2024-09-12 18:01:36,058 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 10 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 18:01:36,058 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 128 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 18:01:36,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2024-09-12 18:01:36,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 80. [2024-09-12 18:01:36,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 74 states have (on average 1.0810810810810811) internal successors, (80), 75 states have internal predecessors, (80), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:01:36,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 84 transitions. [2024-09-12 18:01:36,072 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 84 transitions. Word has length 31 [2024-09-12 18:01:36,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:01:36,072 INFO L474 AbstractCegarLoop]: Abstraction has 80 states and 84 transitions. [2024-09-12 18:01:36,072 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.590909090909091) internal successors, (57), 20 states have internal predecessors, (57), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:01:36,072 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:01:36,072 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 84 transitions. [2024-09-12 18:01:36,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-09-12 18:01:36,073 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:01:36,073 INFO L216 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:01:36,086 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-09-12 18:01:36,274 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:01:36,275 INFO L399 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2024-09-12 18:01:36,275 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:01:36,275 INFO L85 PathProgramCache]: Analyzing trace with hash -488888289, now seen corresponding path program 2 times [2024-09-12 18:01:36,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:01:36,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444430329] [2024-09-12 18:01:36,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:01:36,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:01:36,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:01:36,440 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:01:36,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:01:36,443 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:01:36,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:01:36,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444430329] [2024-09-12 18:01:36,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444430329] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:01:36,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1582244705] [2024-09-12 18:01:36,445 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 18:01:36,445 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:01:36,445 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:01:36,449 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 18:01:36,451 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 18:01:36,494 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 18:01:36,495 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 18:01:36,495 INFO L262 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-09-12 18:01:36,497 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:01:36,596 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:01:36,596 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:01:36,740 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:01:36,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1582244705] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:01:36,740 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:01:36,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23 [2024-09-12 18:01:36,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773832257] [2024-09-12 18:01:36,740 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:01:36,741 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-09-12 18:01:36,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:01:36,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-09-12 18:01:36,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2024-09-12 18:01:36,742 INFO L87 Difference]: Start difference. First operand 80 states and 84 transitions. Second operand has 24 states, 23 states have (on average 3.1739130434782608) internal successors, (73), 24 states have internal predecessors, (73), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:01:36,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:01:36,801 INFO L93 Difference]: Finished difference Result 124 states and 139 transitions. [2024-09-12 18:01:36,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-09-12 18:01:36,802 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 3.1739130434782608) internal successors, (73), 24 states have internal predecessors, (73), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 38 [2024-09-12 18:01:36,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:01:36,807 INFO L225 Difference]: With dead ends: 124 [2024-09-12 18:01:36,807 INFO L226 Difference]: Without dead ends: 123 [2024-09-12 18:01:36,807 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2024-09-12 18:01:36,808 INFO L434 NwaCegarLoop]: 18 mSDtfsCounter, 11 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 18:01:36,808 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 147 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 18:01:36,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2024-09-12 18:01:36,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 116. [2024-09-12 18:01:36,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 110 states have (on average 1.1090909090909091) internal successors, (122), 111 states have internal predecessors, (122), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:01:36,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 126 transitions. [2024-09-12 18:01:36,823 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 126 transitions. Word has length 38 [2024-09-12 18:01:36,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:01:36,823 INFO L474 AbstractCegarLoop]: Abstraction has 116 states and 126 transitions. [2024-09-12 18:01:36,824 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 3.1739130434782608) internal successors, (73), 24 states have internal predecessors, (73), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:01:36,824 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:01:36,824 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 126 transitions. [2024-09-12 18:01:36,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-09-12 18:01:36,824 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:01:36,824 INFO L216 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:01:36,843 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-09-12 18:01:37,028 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,9 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:01:37,030 INFO L399 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2024-09-12 18:01:37,031 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:01:37,031 INFO L85 PathProgramCache]: Analyzing trace with hash -1973091096, now seen corresponding path program 2 times [2024-09-12 18:01:37,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:01:37,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682835512] [2024-09-12 18:01:37,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:01:37,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:01:37,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:01:37,188 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:01:37,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:01:37,190 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:01:37,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:01:37,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682835512] [2024-09-12 18:01:37,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682835512] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:01:37,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [777010435] [2024-09-12 18:01:37,191 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 18:01:37,191 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:01:37,191 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:01:37,198 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 18:01:37,199 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 18:01:37,238 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 18:01:37,239 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 18:01:37,239 INFO L262 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-09-12 18:01:37,241 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:01:37,315 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:01:37,316 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:01:37,503 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:01:37,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [777010435] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:01:37,503 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:01:37,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 30 [2024-09-12 18:01:37,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630841164] [2024-09-12 18:01:37,504 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:01:37,504 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-09-12 18:01:37,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:01:37,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-09-12 18:01:37,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=708, Unknown=0, NotChecked=0, Total=870 [2024-09-12 18:01:37,505 INFO L87 Difference]: Start difference. First operand 116 states and 126 transitions. Second operand has 30 states, 30 states have (on average 2.566666666666667) internal successors, (77), 28 states have internal predecessors, (77), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:01:37,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:01:37,639 INFO L93 Difference]: Finished difference Result 184 states and 200 transitions. [2024-09-12 18:01:37,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-09-12 18:01:37,639 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.566666666666667) internal successors, (77), 28 states have internal predecessors, (77), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 41 [2024-09-12 18:01:37,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:01:37,640 INFO L225 Difference]: With dead ends: 184 [2024-09-12 18:01:37,640 INFO L226 Difference]: Without dead ends: 172 [2024-09-12 18:01:37,641 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 68 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 291 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=168, Invalid=762, Unknown=0, NotChecked=0, Total=930 [2024-09-12 18:01:37,642 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 14 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 180 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 18:01:37,642 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 180 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 18:01:37,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2024-09-12 18:01:37,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 132. [2024-09-12 18:01:37,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 126 states have (on average 1.0952380952380953) internal successors, (138), 127 states have internal predecessors, (138), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:01:37,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 142 transitions. [2024-09-12 18:01:37,661 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 142 transitions. Word has length 41 [2024-09-12 18:01:37,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:01:37,661 INFO L474 AbstractCegarLoop]: Abstraction has 132 states and 142 transitions. [2024-09-12 18:01:37,662 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 2.566666666666667) internal successors, (77), 28 states have internal predecessors, (77), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:01:37,662 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:01:37,662 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 142 transitions. [2024-09-12 18:01:37,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-09-12 18:01:37,663 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:01:37,663 INFO L216 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:01:37,676 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 18:01:37,867 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-09-12 18:01:37,868 INFO L399 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2024-09-12 18:01:37,868 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:01:37,868 INFO L85 PathProgramCache]: Analyzing trace with hash 2091450950, now seen corresponding path program 3 times [2024-09-12 18:01:37,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:01:37,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66777754] [2024-09-12 18:01:37,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:01:37,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:01:37,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:01:38,153 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:01:38,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:01:38,156 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:01:38,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:01:38,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66777754] [2024-09-12 18:01:38,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66777754] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:01:38,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [109727942] [2024-09-12 18:01:38,156 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-12 18:01:38,157 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:01:38,157 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:01:38,159 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 18:01:38,167 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 18:01:38,214 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-09-12 18:01:38,215 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 18:01:38,216 INFO L262 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-09-12 18:01:38,221 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:01:38,374 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:01:38,374 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:01:38,672 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:01:38,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [109727942] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:01:38,673 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:01:38,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 38 [2024-09-12 18:01:38,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964173100] [2024-09-12 18:01:38,673 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:01:38,673 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-09-12 18:01:38,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:01:38,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-09-12 18:01:38,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=260, Invalid=1146, Unknown=0, NotChecked=0, Total=1406 [2024-09-12 18:01:38,675 INFO L87 Difference]: Start difference. First operand 132 states and 142 transitions. Second operand has 38 states, 38 states have (on average 2.5526315789473686) internal successors, (97), 36 states have internal predecessors, (97), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:01:38,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:01:38,866 INFO L93 Difference]: Finished difference Result 222 states and 240 transitions. [2024-09-12 18:01:38,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-09-12 18:01:38,867 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 2.5526315789473686) internal successors, (97), 36 states have internal predecessors, (97), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 51 [2024-09-12 18:01:38,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:01:38,868 INFO L225 Difference]: With dead ends: 222 [2024-09-12 18:01:38,868 INFO L226 Difference]: Without dead ends: 208 [2024-09-12 18:01:38,869 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 460 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=266, Invalid=1216, Unknown=0, NotChecked=0, Total=1482 [2024-09-12 18:01:38,870 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 26 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 18:01:38,870 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 201 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 18:01:38,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2024-09-12 18:01:38,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 148. [2024-09-12 18:01:38,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 142 states have (on average 1.0845070422535212) internal successors, (154), 143 states have internal predecessors, (154), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:01:38,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 158 transitions. [2024-09-12 18:01:38,889 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 158 transitions. Word has length 51 [2024-09-12 18:01:38,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:01:38,889 INFO L474 AbstractCegarLoop]: Abstraction has 148 states and 158 transitions. [2024-09-12 18:01:38,889 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 2.5526315789473686) internal successors, (97), 36 states have internal predecessors, (97), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:01:38,889 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:01:38,890 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 158 transitions. [2024-09-12 18:01:38,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-09-12 18:01:38,890 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:01:38,890 INFO L216 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:01:38,907 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-09-12 18:01:39,094 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-09-12 18:01:39,095 INFO L399 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2024-09-12 18:01:39,095 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:01:39,095 INFO L85 PathProgramCache]: Analyzing trace with hash 1691159652, now seen corresponding path program 4 times [2024-09-12 18:01:39,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:01:39,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176906206] [2024-09-12 18:01:39,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:01:39,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:01:39,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:01:39,424 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:01:39,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:01:39,426 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 102 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:01:39,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:01:39,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176906206] [2024-09-12 18:01:39,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176906206] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:01:39,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1174120302] [2024-09-12 18:01:39,427 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-12 18:01:39,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:01:39,427 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:01:39,429 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 18:01:39,433 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 18:01:39,483 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-12 18:01:39,483 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 18:01:39,485 INFO L262 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-09-12 18:01:39,487 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:01:39,610 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 102 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:01:39,610 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:01:40,080 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 102 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:01:40,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1174120302] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:01:40,081 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:01:40,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 46 [2024-09-12 18:01:40,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775359400] [2024-09-12 18:01:40,081 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:01:40,082 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2024-09-12 18:01:40,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:01:40,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2024-09-12 18:01:40,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=382, Invalid=1688, Unknown=0, NotChecked=0, Total=2070 [2024-09-12 18:01:40,084 INFO L87 Difference]: Start difference. First operand 148 states and 158 transitions. Second operand has 46 states, 46 states have (on average 2.5434782608695654) internal successors, (117), 44 states have internal predecessors, (117), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:01:40,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:01:40,312 INFO L93 Difference]: Finished difference Result 260 states and 280 transitions. [2024-09-12 18:01:40,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2024-09-12 18:01:40,313 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 2.5434782608695654) internal successors, (117), 44 states have internal predecessors, (117), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 61 [2024-09-12 18:01:40,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:01:40,314 INFO L225 Difference]: With dead ends: 260 [2024-09-12 18:01:40,314 INFO L226 Difference]: Without dead ends: 244 [2024-09-12 18:01:40,315 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 100 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 747 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=388, Invalid=1774, Unknown=0, NotChecked=0, Total=2162 [2024-09-12 18:01:40,316 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 36 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 226 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 203 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 18:01:40,316 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 203 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 226 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 18:01:40,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2024-09-12 18:01:40,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 164. [2024-09-12 18:01:40,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 158 states have (on average 1.0759493670886076) internal successors, (170), 159 states have internal predecessors, (170), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:01:40,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 174 transitions. [2024-09-12 18:01:40,336 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 174 transitions. Word has length 61 [2024-09-12 18:01:40,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:01:40,336 INFO L474 AbstractCegarLoop]: Abstraction has 164 states and 174 transitions. [2024-09-12 18:01:40,336 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 2.5434782608695654) internal successors, (117), 44 states have internal predecessors, (117), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:01:40,336 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:01:40,337 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 174 transitions. [2024-09-12 18:01:40,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-09-12 18:01:40,337 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:01:40,337 INFO L216 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:01:40,358 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 18:01:40,541 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-09-12 18:01:40,542 INFO L399 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2024-09-12 18:01:40,542 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:01:40,542 INFO L85 PathProgramCache]: Analyzing trace with hash -1256225982, now seen corresponding path program 5 times [2024-09-12 18:01:40,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:01:40,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28356163] [2024-09-12 18:01:40,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:01:40,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:01:40,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:01:40,976 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:01:40,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:01:40,978 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 0 proven. 152 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:01:40,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:01:40,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28356163] [2024-09-12 18:01:40,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [28356163] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:01:40,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [72494997] [2024-09-12 18:01:40,979 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-12 18:01:40,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:01:40,979 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:01:40,983 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 18:01:40,991 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 18:01:41,034 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2024-09-12 18:01:41,034 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 18:01:41,037 INFO L262 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-09-12 18:01:41,038 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:01:41,140 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 0 proven. 152 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:01:41,140 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:01:41,658 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 0 proven. 152 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:01:41,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [72494997] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:01:41,658 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:01:41,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27, 27] total 54 [2024-09-12 18:01:41,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842295772] [2024-09-12 18:01:41,658 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:01:41,659 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2024-09-12 18:01:41,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:01:41,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2024-09-12 18:01:41,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=528, Invalid=2334, Unknown=0, NotChecked=0, Total=2862 [2024-09-12 18:01:41,660 INFO L87 Difference]: Start difference. First operand 164 states and 174 transitions. Second operand has 54 states, 54 states have (on average 2.537037037037037) internal successors, (137), 52 states have internal predecessors, (137), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:01:41,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:01:41,895 INFO L93 Difference]: Finished difference Result 300 states and 322 transitions. [2024-09-12 18:01:41,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2024-09-12 18:01:41,896 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 2.537037037037037) internal successors, (137), 52 states have internal predecessors, (137), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 71 [2024-09-12 18:01:41,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:01:41,897 INFO L225 Difference]: With dead ends: 300 [2024-09-12 18:01:41,897 INFO L226 Difference]: Without dead ends: 282 [2024-09-12 18:01:41,899 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 116 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1050 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=534, Invalid=2436, Unknown=0, NotChecked=0, Total=2970 [2024-09-12 18:01:41,900 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 56 mSDsluCounter, 213 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 225 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 18:01:41,900 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 225 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 240 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 18:01:41,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2024-09-12 18:01:41,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 180. [2024-09-12 18:01:41,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 174 states have (on average 1.0804597701149425) internal successors, (188), 175 states have internal predecessors, (188), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:01:41,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 192 transitions. [2024-09-12 18:01:41,925 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 192 transitions. Word has length 71 [2024-09-12 18:01:41,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:01:41,925 INFO L474 AbstractCegarLoop]: Abstraction has 180 states and 192 transitions. [2024-09-12 18:01:41,925 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 2.537037037037037) internal successors, (137), 52 states have internal predecessors, (137), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:01:41,926 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:01:41,926 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 192 transitions. [2024-09-12 18:01:41,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-09-12 18:01:41,926 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:01:41,926 INFO L216 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:01:41,943 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-09-12 18:01:42,131 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,13 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:01:42,132 INFO L399 AbstractCegarLoop]: === Iteration 20 === Targeting mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2024-09-12 18:01:42,132 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:01:42,132 INFO L85 PathProgramCache]: Analyzing trace with hash -995514027, now seen corresponding path program 3 times [2024-09-12 18:01:42,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:01:42,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689202656] [2024-09-12 18:01:42,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:01:42,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:01:42,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:01:42,486 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:01:42,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:01:42,489 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 0 proven. 330 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:01:42,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:01:42,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689202656] [2024-09-12 18:01:42,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689202656] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:01:42,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [96891890] [2024-09-12 18:01:42,489 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-12 18:01:42,489 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:01:42,489 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:01:42,492 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 18:01:42,493 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 18:01:42,546 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-09-12 18:01:42,546 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 18:01:42,547 INFO L262 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-09-12 18:01:42,549 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:01:42,636 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 0 proven. 330 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:01:42,636 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:01:43,180 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 0 proven. 330 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:01:43,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [96891890] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:01:43,181 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:01:43,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 47 [2024-09-12 18:01:43,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030617699] [2024-09-12 18:01:43,181 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:01:43,182 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2024-09-12 18:01:43,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:01:43,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2024-09-12 18:01:43,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=599, Invalid=1657, Unknown=0, NotChecked=0, Total=2256 [2024-09-12 18:01:43,184 INFO L87 Difference]: Start difference. First operand 180 states and 192 transitions. Second operand has 48 states, 47 states have (on average 3.0851063829787235) internal successors, (145), 48 states have internal predecessors, (145), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:01:43,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:01:43,316 INFO L93 Difference]: Finished difference Result 268 states and 303 transitions. [2024-09-12 18:01:43,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2024-09-12 18:01:43,317 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 3.0851063829787235) internal successors, (145), 48 states have internal predecessors, (145), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 74 [2024-09-12 18:01:43,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:01:43,318 INFO L225 Difference]: With dead ends: 268 [2024-09-12 18:01:43,319 INFO L226 Difference]: Without dead ends: 267 [2024-09-12 18:01:43,319 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 687 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=599, Invalid=1657, Unknown=0, NotChecked=0, Total=2256 [2024-09-12 18:01:43,320 INFO L434 NwaCegarLoop]: 18 mSDtfsCounter, 31 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 18:01:43,320 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 189 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 18:01:43,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2024-09-12 18:01:43,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 252. [2024-09-12 18:01:43,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 246 states have (on average 1.0975609756097562) internal successors, (270), 247 states have internal predecessors, (270), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:01:43,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 274 transitions. [2024-09-12 18:01:43,346 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 274 transitions. Word has length 74 [2024-09-12 18:01:43,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:01:43,346 INFO L474 AbstractCegarLoop]: Abstraction has 252 states and 274 transitions. [2024-09-12 18:01:43,346 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 3.0851063829787235) internal successors, (145), 48 states have internal predecessors, (145), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:01:43,347 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:01:43,347 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 274 transitions. [2024-09-12 18:01:43,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-09-12 18:01:43,347 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:01:43,348 INFO L216 NwaCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:01:43,360 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-09-12 18:01:43,548 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,14 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:01:43,549 INFO L399 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2024-09-12 18:01:43,549 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:01:43,549 INFO L85 PathProgramCache]: Analyzing trace with hash -491075872, now seen corresponding path program 6 times [2024-09-12 18:01:43,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:01:43,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071636966] [2024-09-12 18:01:43,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:01:43,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:01:43,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:01:44,089 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:01:44,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:01:44,092 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 0 proven. 212 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:01:44,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:01:44,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071636966] [2024-09-12 18:01:44,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071636966] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:01:44,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [371777814] [2024-09-12 18:01:44,092 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-12 18:01:44,093 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:01:44,093 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:01:44,094 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 18:01:44,099 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 18:01:44,156 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2024-09-12 18:01:44,157 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 18:01:44,158 INFO L262 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-09-12 18:01:44,160 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:01:44,310 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 0 proven. 212 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:01:44,310 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:01:45,067 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 0 proven. 212 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:01:45,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [371777814] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:01:45,067 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:01:45,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31, 31] total 62 [2024-09-12 18:01:45,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111729383] [2024-09-12 18:01:45,068 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:01:45,068 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2024-09-12 18:01:45,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:01:45,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2024-09-12 18:01:45,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=698, Invalid=3084, Unknown=0, NotChecked=0, Total=3782 [2024-09-12 18:01:45,071 INFO L87 Difference]: Start difference. First operand 252 states and 274 transitions. Second operand has 62 states, 62 states have (on average 2.532258064516129) internal successors, (157), 60 states have internal predecessors, (157), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:01:45,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:01:45,412 INFO L93 Difference]: Finished difference Result 408 states and 444 transitions. [2024-09-12 18:01:45,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2024-09-12 18:01:45,413 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 2.532258064516129) internal successors, (157), 60 states have internal predecessors, (157), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 81 [2024-09-12 18:01:45,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:01:45,415 INFO L225 Difference]: With dead ends: 408 [2024-09-12 18:01:45,415 INFO L226 Difference]: Without dead ends: 388 [2024-09-12 18:01:45,417 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1345 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=704, Invalid=3202, Unknown=0, NotChecked=0, Total=3906 [2024-09-12 18:01:45,417 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 69 mSDsluCounter, 275 mSDsCounter, 0 mSdLazyCounter, 308 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 287 SdHoareTripleChecker+Invalid, 332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 18:01:45,418 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 287 Invalid, 332 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 308 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 18:01:45,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2024-09-12 18:01:45,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 268. [2024-09-12 18:01:45,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268 states, 262 states have (on average 1.0916030534351144) internal successors, (286), 263 states have internal predecessors, (286), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:01:45,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 290 transitions. [2024-09-12 18:01:45,465 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 290 transitions. Word has length 81 [2024-09-12 18:01:45,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:01:45,465 INFO L474 AbstractCegarLoop]: Abstraction has 268 states and 290 transitions. [2024-09-12 18:01:45,466 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 2.532258064516129) internal successors, (157), 60 states have internal predecessors, (157), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:01:45,466 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:01:45,466 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 290 transitions. [2024-09-12 18:01:45,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-09-12 18:01:45,467 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:01:45,467 INFO L216 NwaCegarLoop]: trace histogram [9, 8, 8, 8, 8, 8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:01:45,485 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 18:01:45,671 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,15 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:01:45,672 INFO L399 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2024-09-12 18:01:45,673 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:01:45,673 INFO L85 PathProgramCache]: Analyzing trace with hash 1401239358, now seen corresponding path program 7 times [2024-09-12 18:01:45,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:01:45,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101215776] [2024-09-12 18:01:45,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:01:45,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:01:45,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:01:46,378 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:01:46,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:01:46,382 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 0 proven. 282 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:01:46,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:01:46,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101215776] [2024-09-12 18:01:46,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101215776] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:01:46,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1803725948] [2024-09-12 18:01:46,382 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-12 18:01:46,383 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:01:46,383 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:01:46,385 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 18:01:46,392 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 18:01:46,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:01:46,452 INFO L262 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-09-12 18:01:46,454 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:01:46,631 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 0 proven. 282 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:01:46,631 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:01:47,622 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 0 proven. 282 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:01:47,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1803725948] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:01:47,623 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:01:47,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35, 35] total 70 [2024-09-12 18:01:47,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760575868] [2024-09-12 18:01:47,627 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:01:47,628 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2024-09-12 18:01:47,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:01:47,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2024-09-12 18:01:47,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=892, Invalid=3938, Unknown=0, NotChecked=0, Total=4830 [2024-09-12 18:01:47,632 INFO L87 Difference]: Start difference. First operand 268 states and 290 transitions. Second operand has 70 states, 70 states have (on average 2.5285714285714285) internal successors, (177), 68 states have internal predecessors, (177), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:01:47,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:01:47,972 INFO L93 Difference]: Finished difference Result 446 states and 484 transitions. [2024-09-12 18:01:47,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2024-09-12 18:01:47,973 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 70 states have (on average 2.5285714285714285) internal successors, (177), 68 states have internal predecessors, (177), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 91 [2024-09-12 18:01:47,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:01:47,975 INFO L225 Difference]: With dead ends: 446 [2024-09-12 18:01:47,975 INFO L226 Difference]: Without dead ends: 424 [2024-09-12 18:01:47,977 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 148 SyntacticMatches, 2 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1806 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=898, Invalid=4072, Unknown=0, NotChecked=0, Total=4970 [2024-09-12 18:01:47,977 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 105 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 307 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 284 SdHoareTripleChecker+Invalid, 315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 18:01:47,978 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 284 Invalid, 315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 307 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 18:01:47,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2024-09-12 18:01:48,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 284. [2024-09-12 18:01:48,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 278 states have (on average 1.0863309352517985) internal successors, (302), 279 states have internal predecessors, (302), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:01:48,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 306 transitions. [2024-09-12 18:01:48,018 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 306 transitions. Word has length 91 [2024-09-12 18:01:48,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:01:48,018 INFO L474 AbstractCegarLoop]: Abstraction has 284 states and 306 transitions. [2024-09-12 18:01:48,019 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 70 states have (on average 2.5285714285714285) internal successors, (177), 68 states have internal predecessors, (177), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:01:48,019 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:01:48,019 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 306 transitions. [2024-09-12 18:01:48,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-09-12 18:01:48,020 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:01:48,020 INFO L216 NwaCegarLoop]: trace histogram [10, 9, 9, 9, 9, 9, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:01:48,038 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-09-12 18:01:48,224 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-09-12 18:01:48,225 INFO L399 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2024-09-12 18:01:48,225 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:01:48,226 INFO L85 PathProgramCache]: Analyzing trace with hash 204551260, now seen corresponding path program 8 times [2024-09-12 18:01:48,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:01:48,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089608660] [2024-09-12 18:01:48,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:01:48,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:01:48,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:01:49,014 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:01:49,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:01:49,017 INFO L134 CoverageAnalysis]: Checked inductivity of 362 backedges. 0 proven. 362 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:01:49,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:01:49,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089608660] [2024-09-12 18:01:49,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1089608660] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:01:49,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1949134195] [2024-09-12 18:01:49,017 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 18:01:49,018 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:01:49,018 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:01:49,020 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 18:01:49,020 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 18:01:49,080 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 18:01:49,080 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 18:01:49,086 INFO L262 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-09-12 18:01:49,088 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:01:49,302 INFO L134 CoverageAnalysis]: Checked inductivity of 362 backedges. 0 proven. 362 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:01:49,302 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:01:50,275 INFO L134 CoverageAnalysis]: Checked inductivity of 362 backedges. 0 proven. 362 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:01:50,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1949134195] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:01:50,276 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:01:50,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39, 39] total 78 [2024-09-12 18:01:50,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676684758] [2024-09-12 18:01:50,277 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:01:50,277 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 78 states [2024-09-12 18:01:50,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:01:50,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2024-09-12 18:01:50,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1110, Invalid=4896, Unknown=0, NotChecked=0, Total=6006 [2024-09-12 18:01:50,281 INFO L87 Difference]: Start difference. First operand 284 states and 306 transitions. Second operand has 78 states, 78 states have (on average 2.5256410256410255) internal successors, (197), 76 states have internal predecessors, (197), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:01:50,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:01:50,684 INFO L93 Difference]: Finished difference Result 484 states and 524 transitions. [2024-09-12 18:01:50,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2024-09-12 18:01:50,687 INFO L78 Accepts]: Start accepts. Automaton has has 78 states, 78 states have (on average 2.5256410256410255) internal successors, (197), 76 states have internal predecessors, (197), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 101 [2024-09-12 18:01:50,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:01:50,690 INFO L225 Difference]: With dead ends: 484 [2024-09-12 18:01:50,690 INFO L226 Difference]: Without dead ends: 460 [2024-09-12 18:01:50,692 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 164 SyntacticMatches, 2 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2259 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1116, Invalid=5046, Unknown=0, NotChecked=0, Total=6162 [2024-09-12 18:01:50,692 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 113 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 301 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 266 SdHoareTripleChecker+Invalid, 324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 18:01:50,692 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 266 Invalid, 324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 301 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 18:01:50,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2024-09-12 18:01:50,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 300. [2024-09-12 18:01:50,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 300 states, 294 states have (on average 1.0816326530612246) internal successors, (318), 295 states have internal predecessors, (318), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:01:50,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 322 transitions. [2024-09-12 18:01:50,736 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 322 transitions. Word has length 101 [2024-09-12 18:01:50,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:01:50,736 INFO L474 AbstractCegarLoop]: Abstraction has 300 states and 322 transitions. [2024-09-12 18:01:50,737 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 78 states, 78 states have (on average 2.5256410256410255) internal successors, (197), 76 states have internal predecessors, (197), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:01:50,737 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:01:50,737 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 322 transitions. [2024-09-12 18:01:50,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-09-12 18:01:50,738 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:01:50,738 INFO L216 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:01:50,756 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 18:01:50,942 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,17 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:01:50,943 INFO L399 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2024-09-12 18:01:50,943 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:01:50,944 INFO L85 PathProgramCache]: Analyzing trace with hash 507321914, now seen corresponding path program 9 times [2024-09-12 18:01:50,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:01:50,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100019044] [2024-09-12 18:01:50,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:01:50,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:01:50,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:01:51,816 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:01:51,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:01:51,819 INFO L134 CoverageAnalysis]: Checked inductivity of 452 backedges. 0 proven. 452 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:01:51,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:01:51,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100019044] [2024-09-12 18:01:51,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100019044] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:01:51,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [845890239] [2024-09-12 18:01:51,820 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-12 18:01:51,820 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:01:51,820 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:01:51,822 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 18:01:51,834 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 18:01:51,906 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-09-12 18:01:51,906 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 18:01:51,908 INFO L262 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-09-12 18:01:51,910 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:01:52,071 INFO L134 CoverageAnalysis]: Checked inductivity of 452 backedges. 0 proven. 452 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:01:52,071 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:01:53,156 INFO L134 CoverageAnalysis]: Checked inductivity of 452 backedges. 0 proven. 452 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:01:53,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [845890239] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:01:53,157 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:01:53,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43, 43] total 86 [2024-09-12 18:01:53,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009628000] [2024-09-12 18:01:53,157 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:01:53,157 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 86 states [2024-09-12 18:01:53,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:01:53,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2024-09-12 18:01:53,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1352, Invalid=5958, Unknown=0, NotChecked=0, Total=7310 [2024-09-12 18:01:53,160 INFO L87 Difference]: Start difference. First operand 300 states and 322 transitions. Second operand has 86 states, 86 states have (on average 2.5232558139534884) internal successors, (217), 84 states have internal predecessors, (217), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:01:53,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:01:53,516 INFO L93 Difference]: Finished difference Result 522 states and 564 transitions. [2024-09-12 18:01:53,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2024-09-12 18:01:53,517 INFO L78 Accepts]: Start accepts. Automaton has has 86 states, 86 states have (on average 2.5232558139534884) internal successors, (217), 84 states have internal predecessors, (217), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 111 [2024-09-12 18:01:53,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:01:53,519 INFO L225 Difference]: With dead ends: 522 [2024-09-12 18:01:53,519 INFO L226 Difference]: Without dead ends: 496 [2024-09-12 18:01:53,521 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2680 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1358, Invalid=6124, Unknown=0, NotChecked=0, Total=7482 [2024-09-12 18:01:53,522 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 124 mSDsluCounter, 297 mSDsCounter, 0 mSdLazyCounter, 346 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 309 SdHoareTripleChecker+Invalid, 379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 346 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 18:01:53,522 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 309 Invalid, 379 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 346 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 18:01:53,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 496 states. [2024-09-12 18:01:53,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 496 to 316. [2024-09-12 18:01:53,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 316 states, 310 states have (on average 1.0774193548387097) internal successors, (334), 311 states have internal predecessors, (334), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:01:53,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 338 transitions. [2024-09-12 18:01:53,571 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 338 transitions. Word has length 111 [2024-09-12 18:01:53,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:01:53,571 INFO L474 AbstractCegarLoop]: Abstraction has 316 states and 338 transitions. [2024-09-12 18:01:53,571 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 86 states, 86 states have (on average 2.5232558139534884) internal successors, (217), 84 states have internal predecessors, (217), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:01:53,572 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:01:53,572 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 338 transitions. [2024-09-12 18:01:53,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-09-12 18:01:53,573 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:01:53,573 INFO L216 NwaCegarLoop]: trace histogram [12, 11, 11, 11, 11, 11, 11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:01:53,592 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-09-12 18:01:53,777 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,18 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:01:53,778 INFO L399 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2024-09-12 18:01:53,778 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:01:53,778 INFO L85 PathProgramCache]: Analyzing trace with hash -705473320, now seen corresponding path program 10 times [2024-09-12 18:01:53,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:01:53,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52241463] [2024-09-12 18:01:53,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:01:53,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:01:53,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:01:54,582 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:01:54,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:01:54,584 INFO L134 CoverageAnalysis]: Checked inductivity of 552 backedges. 0 proven. 552 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:01:54,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:01:54,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52241463] [2024-09-12 18:01:54,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52241463] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:01:54,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [162442050] [2024-09-12 18:01:54,585 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-12 18:01:54,585 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:01:54,585 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:01:54,588 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 18:01:54,592 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 18:01:54,650 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-12 18:01:54,651 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 18:01:54,652 INFO L262 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-09-12 18:01:54,654 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:01:54,842 INFO L134 CoverageAnalysis]: Checked inductivity of 552 backedges. 0 proven. 552 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:01:54,842 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:01:56,079 INFO L134 CoverageAnalysis]: Checked inductivity of 552 backedges. 0 proven. 552 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:01:56,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [162442050] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:01:56,080 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:01:56,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47, 47] total 94 [2024-09-12 18:01:56,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886214454] [2024-09-12 18:01:56,080 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:01:56,081 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 94 states [2024-09-12 18:01:56,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:01:56,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2024-09-12 18:01:56,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1618, Invalid=7124, Unknown=0, NotChecked=0, Total=8742 [2024-09-12 18:01:56,085 INFO L87 Difference]: Start difference. First operand 316 states and 338 transitions. Second operand has 94 states, 94 states have (on average 2.521276595744681) internal successors, (237), 92 states have internal predecessors, (237), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:01:56,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:01:56,502 INFO L93 Difference]: Finished difference Result 560 states and 604 transitions. [2024-09-12 18:01:56,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2024-09-12 18:01:56,503 INFO L78 Accepts]: Start accepts. Automaton has has 94 states, 94 states have (on average 2.521276595744681) internal successors, (237), 92 states have internal predecessors, (237), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 121 [2024-09-12 18:01:56,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:01:56,506 INFO L225 Difference]: With dead ends: 560 [2024-09-12 18:01:56,506 INFO L226 Difference]: Without dead ends: 532 [2024-09-12 18:01:56,507 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 196 SyntacticMatches, 2 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3315 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1624, Invalid=7306, Unknown=0, NotChecked=0, Total=8930 [2024-09-12 18:01:56,507 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 130 mSDsluCounter, 292 mSDsCounter, 0 mSdLazyCounter, 350 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 304 SdHoareTripleChecker+Invalid, 365 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 18:01:56,508 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 304 Invalid, 365 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 350 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 18:01:56,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 532 states. [2024-09-12 18:01:56,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 532 to 332. [2024-09-12 18:01:56,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 332 states, 326 states have (on average 1.0736196319018405) internal successors, (350), 327 states have internal predecessors, (350), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:01:56,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 354 transitions. [2024-09-12 18:01:56,570 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 354 transitions. Word has length 121 [2024-09-12 18:01:56,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:01:56,571 INFO L474 AbstractCegarLoop]: Abstraction has 332 states and 354 transitions. [2024-09-12 18:01:56,571 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 94 states, 94 states have (on average 2.521276595744681) internal successors, (237), 92 states have internal predecessors, (237), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:01:56,571 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:01:56,571 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 354 transitions. [2024-09-12 18:01:56,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2024-09-12 18:01:56,573 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:01:56,573 INFO L216 NwaCegarLoop]: trace histogram [13, 12, 12, 12, 12, 12, 12, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:01:56,589 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-09-12 18:01:56,776 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-09-12 18:01:56,777 INFO L399 AbstractCegarLoop]: === Iteration 26 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2024-09-12 18:01:56,777 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:01:56,777 INFO L85 PathProgramCache]: Analyzing trace with hash -1469433802, now seen corresponding path program 11 times [2024-09-12 18:01:56,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:01:56,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112623669] [2024-09-12 18:01:56,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:01:56,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:01:56,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:01:57,988 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:01:57,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:01:57,992 INFO L134 CoverageAnalysis]: Checked inductivity of 662 backedges. 0 proven. 662 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:01:57,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:01:57,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112623669] [2024-09-12 18:01:57,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112623669] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:01:57,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [293771260] [2024-09-12 18:01:57,993 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-12 18:01:57,993 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:01:57,993 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:01:57,995 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 18:01:57,997 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 18:01:58,082 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2024-09-12 18:01:58,082 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 18:01:58,085 INFO L262 TraceCheckSpWp]: Trace formula consists of 347 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-09-12 18:01:58,088 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:01:58,306 INFO L134 CoverageAnalysis]: Checked inductivity of 662 backedges. 0 proven. 662 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:01:58,306 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:02:00,244 INFO L134 CoverageAnalysis]: Checked inductivity of 662 backedges. 0 proven. 662 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:02:00,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [293771260] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:02:00,245 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:02:00,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51, 51] total 102 [2024-09-12 18:02:00,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131586658] [2024-09-12 18:02:00,246 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:02:00,246 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 102 states [2024-09-12 18:02:00,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:02:00,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2024-09-12 18:02:00,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1908, Invalid=8394, Unknown=0, NotChecked=0, Total=10302 [2024-09-12 18:02:00,250 INFO L87 Difference]: Start difference. First operand 332 states and 354 transitions. Second operand has 102 states, 102 states have (on average 2.519607843137255) internal successors, (257), 100 states have internal predecessors, (257), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:02:00,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:02:00,843 INFO L93 Difference]: Finished difference Result 600 states and 646 transitions. [2024-09-12 18:02:00,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2024-09-12 18:02:00,844 INFO L78 Accepts]: Start accepts. Automaton has has 102 states, 102 states have (on average 2.519607843137255) internal successors, (257), 100 states have internal predecessors, (257), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 131 [2024-09-12 18:02:00,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:02:00,847 INFO L225 Difference]: With dead ends: 600 [2024-09-12 18:02:00,847 INFO L226 Difference]: Without dead ends: 570 [2024-09-12 18:02:00,849 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 315 GetRequests, 212 SyntacticMatches, 2 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3918 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1914, Invalid=8592, Unknown=0, NotChecked=0, Total=10506 [2024-09-12 18:02:00,849 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 129 mSDsluCounter, 374 mSDsCounter, 0 mSdLazyCounter, 413 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 386 SdHoareTripleChecker+Invalid, 432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-12 18:02:00,851 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 386 Invalid, 432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 413 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-12 18:02:00,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 570 states. [2024-09-12 18:02:00,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 570 to 348. [2024-09-12 18:02:00,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 348 states, 342 states have (on average 1.0760233918128654) internal successors, (368), 343 states have internal predecessors, (368), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:02:00,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 372 transitions. [2024-09-12 18:02:00,941 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 372 transitions. Word has length 131 [2024-09-12 18:02:00,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:02:00,941 INFO L474 AbstractCegarLoop]: Abstraction has 348 states and 372 transitions. [2024-09-12 18:02:00,942 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 102 states, 102 states have (on average 2.519607843137255) internal successors, (257), 100 states have internal predecessors, (257), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:02:00,942 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:02:00,942 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 372 transitions. [2024-09-12 18:02:00,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2024-09-12 18:02:00,944 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:02:00,944 INFO L216 NwaCegarLoop]: trace histogram [14, 13, 13, 13, 13, 13, 13, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:02:00,967 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-09-12 18:02:01,144 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-09-12 18:02:01,145 INFO L399 AbstractCegarLoop]: === Iteration 27 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2024-09-12 18:02:01,146 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:02:01,146 INFO L85 PathProgramCache]: Analyzing trace with hash -511432620, now seen corresponding path program 12 times [2024-09-12 18:02:01,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:02:01,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213738709] [2024-09-12 18:02:01,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:02:01,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:02:01,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:02:02,433 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:02:02,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:02:02,435 INFO L134 CoverageAnalysis]: Checked inductivity of 782 backedges. 0 proven. 782 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:02:02,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:02:02,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213738709] [2024-09-12 18:02:02,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213738709] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:02:02,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1352357050] [2024-09-12 18:02:02,436 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-12 18:02:02,436 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:02:02,438 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:02:02,439 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 18:02:02,440 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 18:02:02,526 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 14 check-sat command(s) [2024-09-12 18:02:02,526 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 18:02:02,529 INFO L262 TraceCheckSpWp]: Trace formula consists of 373 conjuncts, 57 conjuncts are in the unsatisfiable core [2024-09-12 18:02:02,531 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:02:02,757 INFO L134 CoverageAnalysis]: Checked inductivity of 782 backedges. 0 proven. 782 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:02:02,757 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:02:04,968 INFO L134 CoverageAnalysis]: Checked inductivity of 782 backedges. 0 proven. 782 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:02:04,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1352357050] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:02:04,968 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:02:04,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 55, 55] total 110 [2024-09-12 18:02:04,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561197263] [2024-09-12 18:02:04,969 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:02:04,969 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 110 states [2024-09-12 18:02:04,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:02:04,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 110 interpolants. [2024-09-12 18:02:04,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2222, Invalid=9768, Unknown=0, NotChecked=0, Total=11990 [2024-09-12 18:02:04,972 INFO L87 Difference]: Start difference. First operand 348 states and 372 transitions. Second operand has 110 states, 110 states have (on average 2.518181818181818) internal successors, (277), 108 states have internal predecessors, (277), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:02:05,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:02:05,669 INFO L93 Difference]: Finished difference Result 640 states and 690 transitions. [2024-09-12 18:02:05,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2024-09-12 18:02:05,670 INFO L78 Accepts]: Start accepts. Automaton has has 110 states, 110 states have (on average 2.518181818181818) internal successors, (277), 108 states have internal predecessors, (277), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 141 [2024-09-12 18:02:05,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:02:05,674 INFO L225 Difference]: With dead ends: 640 [2024-09-12 18:02:05,674 INFO L226 Difference]: Without dead ends: 608 [2024-09-12 18:02:05,676 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 339 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4465 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=2228, Invalid=9982, Unknown=0, NotChecked=0, Total=12210 [2024-09-12 18:02:05,676 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 227 mSDsluCounter, 292 mSDsCounter, 0 mSdLazyCounter, 361 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 227 SdHoareTripleChecker+Valid, 304 SdHoareTripleChecker+Invalid, 389 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 361 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-12 18:02:05,677 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [227 Valid, 304 Invalid, 389 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 361 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-12 18:02:05,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 608 states. [2024-09-12 18:02:05,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 608 to 364. [2024-09-12 18:02:05,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 364 states, 358 states have (on average 1.0782122905027933) internal successors, (386), 359 states have internal predecessors, (386), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:02:05,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 390 transitions. [2024-09-12 18:02:05,777 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 390 transitions. Word has length 141 [2024-09-12 18:02:05,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:02:05,778 INFO L474 AbstractCegarLoop]: Abstraction has 364 states and 390 transitions. [2024-09-12 18:02:05,779 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 110 states, 110 states have (on average 2.518181818181818) internal successors, (277), 108 states have internal predecessors, (277), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:02:05,779 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:02:05,779 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 390 transitions. [2024-09-12 18:02:05,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2024-09-12 18:02:05,780 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:02:05,781 INFO L216 NwaCegarLoop]: trace histogram [23, 23, 23, 23, 23, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:02:05,801 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-09-12 18:02:05,984 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-09-12 18:02:05,985 INFO L399 AbstractCegarLoop]: === Iteration 28 === Targeting mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2024-09-12 18:02:05,985 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:02:05,986 INFO L85 PathProgramCache]: Analyzing trace with hash 329810625, now seen corresponding path program 4 times [2024-09-12 18:02:05,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:02:05,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125042891] [2024-09-12 18:02:05,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:02:05,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:02:06,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:02:07,048 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:02:07,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:02:07,051 INFO L134 CoverageAnalysis]: Checked inductivity of 1518 backedges. 0 proven. 1518 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:02:07,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:02:07,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125042891] [2024-09-12 18:02:07,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125042891] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:02:07,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1170848115] [2024-09-12 18:02:07,053 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-12 18:02:07,053 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:02:07,053 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:02:07,055 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 18:02:07,057 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 18:02:07,140 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-12 18:02:07,140 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 18:02:07,146 INFO L262 TraceCheckSpWp]: Trace formula consists of 398 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-09-12 18:02:07,149 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:02:07,331 INFO L134 CoverageAnalysis]: Checked inductivity of 1518 backedges. 0 proven. 1518 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:02:07,332 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:02:08,762 INFO L134 CoverageAnalysis]: Checked inductivity of 1518 backedges. 0 proven. 1518 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:02:08,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1170848115] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:02:08,763 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:02:08,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47, 47] total 95 [2024-09-12 18:02:08,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808240891] [2024-09-12 18:02:08,763 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:02:08,764 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2024-09-12 18:02:08,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:02:08,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2024-09-12 18:02:08,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2351, Invalid=6769, Unknown=0, NotChecked=0, Total=9120 [2024-09-12 18:02:08,766 INFO L87 Difference]: Start difference. First operand 364 states and 390 transitions. Second operand has 96 states, 95 states have (on average 3.042105263157895) internal successors, (289), 96 states have internal predecessors, (289), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:02:09,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:02:09,032 INFO L93 Difference]: Finished difference Result 541 states and 614 transitions. [2024-09-12 18:02:09,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2024-09-12 18:02:09,033 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 95 states have (on average 3.042105263157895) internal successors, (289), 96 states have internal predecessors, (289), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 146 [2024-09-12 18:02:09,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:02:09,035 INFO L225 Difference]: With dead ends: 541 [2024-09-12 18:02:09,035 INFO L226 Difference]: Without dead ends: 540 [2024-09-12 18:02:09,036 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 340 GetRequests, 246 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2823 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=2351, Invalid=6769, Unknown=0, NotChecked=0, Total=9120 [2024-09-12 18:02:09,037 INFO L434 NwaCegarLoop]: 18 mSDtfsCounter, 85 mSDsluCounter, 291 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 309 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 18:02:09,037 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 309 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 18:02:09,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 540 states. [2024-09-12 18:02:09,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 540 to 508. [2024-09-12 18:02:09,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 508 states, 502 states have (on average 1.095617529880478) internal successors, (550), 503 states have internal predecessors, (550), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:02:09,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 508 states to 508 states and 554 transitions. [2024-09-12 18:02:09,113 INFO L78 Accepts]: Start accepts. Automaton has 508 states and 554 transitions. Word has length 146 [2024-09-12 18:02:09,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:02:09,113 INFO L474 AbstractCegarLoop]: Abstraction has 508 states and 554 transitions. [2024-09-12 18:02:09,114 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 95 states have (on average 3.042105263157895) internal successors, (289), 96 states have internal predecessors, (289), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:02:09,114 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:02:09,114 INFO L276 IsEmpty]: Start isEmpty. Operand 508 states and 554 transitions. [2024-09-12 18:02:09,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2024-09-12 18:02:09,115 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:02:09,115 INFO L216 NwaCegarLoop]: trace histogram [15, 14, 14, 14, 14, 14, 14, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:02:09,130 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 18:02:09,315 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-09-12 18:02:09,316 INFO L399 AbstractCegarLoop]: === Iteration 29 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2024-09-12 18:02:09,316 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:02:09,316 INFO L85 PathProgramCache]: Analyzing trace with hash 300909874, now seen corresponding path program 13 times [2024-09-12 18:02:09,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:02:09,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053961668] [2024-09-12 18:02:09,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:02:09,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:02:09,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:02:10,505 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:02:10,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:02:10,514 INFO L134 CoverageAnalysis]: Checked inductivity of 912 backedges. 0 proven. 912 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:02:10,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:02:10,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053961668] [2024-09-12 18:02:10,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053961668] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:02:10,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [745556322] [2024-09-12 18:02:10,515 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-12 18:02:10,515 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:02:10,515 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:02:10,516 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 18:02:10,518 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 18:02:10,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:02:10,582 INFO L262 TraceCheckSpWp]: Trace formula consists of 399 conjuncts, 58 conjuncts are in the unsatisfiable core [2024-09-12 18:02:10,584 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:02:10,786 INFO L134 CoverageAnalysis]: Checked inductivity of 912 backedges. 0 proven. 912 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:02:10,787 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:02:12,902 INFO L134 CoverageAnalysis]: Checked inductivity of 912 backedges. 0 proven. 912 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:02:12,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [745556322] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:02:12,903 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:02:12,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 59, 59] total 118 [2024-09-12 18:02:12,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778268091] [2024-09-12 18:02:12,903 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:02:12,904 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 118 states [2024-09-12 18:02:12,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:02:12,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 118 interpolants. [2024-09-12 18:02:12,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2560, Invalid=11246, Unknown=0, NotChecked=0, Total=13806 [2024-09-12 18:02:12,907 INFO L87 Difference]: Start difference. First operand 508 states and 554 transitions. Second operand has 118 states, 118 states have (on average 2.516949152542373) internal successors, (297), 116 states have internal predecessors, (297), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:02:13,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:02:13,592 INFO L93 Difference]: Finished difference Result 818 states and 892 transitions. [2024-09-12 18:02:13,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2024-09-12 18:02:13,592 INFO L78 Accepts]: Start accepts. Automaton has has 118 states, 118 states have (on average 2.516949152542373) internal successors, (297), 116 states have internal predecessors, (297), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 151 [2024-09-12 18:02:13,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:02:13,596 INFO L225 Difference]: With dead ends: 818 [2024-09-12 18:02:13,596 INFO L226 Difference]: Without dead ends: 784 [2024-09-12 18:02:13,598 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 363 GetRequests, 244 SyntacticMatches, 2 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5274 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=2566, Invalid=11476, Unknown=0, NotChecked=0, Total=14042 [2024-09-12 18:02:13,601 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 181 mSDsluCounter, 340 mSDsCounter, 0 mSdLazyCounter, 410 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 352 SdHoareTripleChecker+Invalid, 459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 410 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-12 18:02:13,601 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [181 Valid, 352 Invalid, 459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 410 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-12 18:02:13,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 784 states. [2024-09-12 18:02:13,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 784 to 524. [2024-09-12 18:02:13,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 524 states, 518 states have (on average 1.0926640926640927) internal successors, (566), 519 states have internal predecessors, (566), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:02:13,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 570 transitions. [2024-09-12 18:02:13,712 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 570 transitions. Word has length 151 [2024-09-12 18:02:13,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:02:13,712 INFO L474 AbstractCegarLoop]: Abstraction has 524 states and 570 transitions. [2024-09-12 18:02:13,712 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 118 states, 118 states have (on average 2.516949152542373) internal successors, (297), 116 states have internal predecessors, (297), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:02:13,713 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:02:13,713 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 570 transitions. [2024-09-12 18:02:13,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2024-09-12 18:02:13,714 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:02:13,714 INFO L216 NwaCegarLoop]: trace histogram [16, 15, 15, 15, 15, 15, 15, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:02:13,732 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-09-12 18:02:13,915 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-09-12 18:02:13,915 INFO L399 AbstractCegarLoop]: === Iteration 30 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2024-09-12 18:02:13,915 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:02:13,915 INFO L85 PathProgramCache]: Analyzing trace with hash 1025945296, now seen corresponding path program 14 times [2024-09-12 18:02:13,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:02:13,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742417657] [2024-09-12 18:02:13,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:02:13,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:02:13,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:02:15,359 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:02:15,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:02:15,361 INFO L134 CoverageAnalysis]: Checked inductivity of 1052 backedges. 0 proven. 1052 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:02:15,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:02:15,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742417657] [2024-09-12 18:02:15,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742417657] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:02:15,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1276176781] [2024-09-12 18:02:15,362 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 18:02:15,362 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:02:15,362 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:02:15,364 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 18:02:15,365 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 18:02:15,442 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 18:02:15,442 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 18:02:15,444 INFO L262 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 62 conjuncts are in the unsatisfiable core [2024-09-12 18:02:15,446 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:02:15,698 INFO L134 CoverageAnalysis]: Checked inductivity of 1052 backedges. 0 proven. 1052 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:02:15,698 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:02:18,117 INFO L134 CoverageAnalysis]: Checked inductivity of 1052 backedges. 0 proven. 1052 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:02:18,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1276176781] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:02:18,118 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:02:18,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 63, 63] total 126 [2024-09-12 18:02:18,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840634213] [2024-09-12 18:02:18,120 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:02:18,120 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 126 states [2024-09-12 18:02:18,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:02:18,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 126 interpolants. [2024-09-12 18:02:18,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2922, Invalid=12828, Unknown=0, NotChecked=0, Total=15750 [2024-09-12 18:02:18,127 INFO L87 Difference]: Start difference. First operand 524 states and 570 transitions. Second operand has 126 states, 126 states have (on average 2.515873015873016) internal successors, (317), 124 states have internal predecessors, (317), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:02:18,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:02:18,790 INFO L93 Difference]: Finished difference Result 856 states and 932 transitions. [2024-09-12 18:02:18,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 122 states. [2024-09-12 18:02:18,790 INFO L78 Accepts]: Start accepts. Automaton has has 126 states, 126 states have (on average 2.515873015873016) internal successors, (317), 124 states have internal predecessors, (317), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 161 [2024-09-12 18:02:18,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:02:18,793 INFO L225 Difference]: With dead ends: 856 [2024-09-12 18:02:18,793 INFO L226 Difference]: Without dead ends: 820 [2024-09-12 18:02:18,794 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 387 GetRequests, 260 SyntacticMatches, 2 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6027 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=2928, Invalid=13074, Unknown=0, NotChecked=0, Total=16002 [2024-09-12 18:02:18,794 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 217 mSDsluCounter, 330 mSDsCounter, 0 mSdLazyCounter, 418 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 342 SdHoareTripleChecker+Invalid, 450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 418 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-12 18:02:18,794 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [217 Valid, 342 Invalid, 450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 418 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-12 18:02:18,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 820 states. [2024-09-12 18:02:18,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 820 to 540. [2024-09-12 18:02:18,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 540 states, 534 states have (on average 1.0898876404494382) internal successors, (582), 535 states have internal predecessors, (582), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:02:18,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 540 states to 540 states and 586 transitions. [2024-09-12 18:02:18,879 INFO L78 Accepts]: Start accepts. Automaton has 540 states and 586 transitions. Word has length 161 [2024-09-12 18:02:18,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:02:18,879 INFO L474 AbstractCegarLoop]: Abstraction has 540 states and 586 transitions. [2024-09-12 18:02:18,879 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 126 states, 126 states have (on average 2.515873015873016) internal successors, (317), 124 states have internal predecessors, (317), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:02:18,880 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:02:18,880 INFO L276 IsEmpty]: Start isEmpty. Operand 540 states and 586 transitions. [2024-09-12 18:02:18,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2024-09-12 18:02:18,881 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:02:18,881 INFO L216 NwaCegarLoop]: trace histogram [17, 16, 16, 16, 16, 16, 16, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:02:18,895 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2024-09-12 18:02:19,084 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,24 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:02:19,088 INFO L399 AbstractCegarLoop]: === Iteration 31 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2024-09-12 18:02:19,088 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:02:19,088 INFO L85 PathProgramCache]: Analyzing trace with hash -948959954, now seen corresponding path program 15 times [2024-09-12 18:02:19,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:02:19,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962963793] [2024-09-12 18:02:19,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:02:19,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:02:19,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:02:20,608 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:02:20,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:02:20,610 INFO L134 CoverageAnalysis]: Checked inductivity of 1202 backedges. 0 proven. 1202 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:02:20,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:02:20,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962963793] [2024-09-12 18:02:20,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1962963793] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:02:20,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [232654581] [2024-09-12 18:02:20,611 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-12 18:02:20,611 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:02:20,611 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:02:20,612 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 18:02:20,613 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 18:02:20,689 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 17 check-sat command(s) [2024-09-12 18:02:20,689 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 18:02:20,694 INFO L262 TraceCheckSpWp]: Trace formula consists of 451 conjuncts, 69 conjuncts are in the unsatisfiable core [2024-09-12 18:02:20,697 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:02:20,910 INFO L134 CoverageAnalysis]: Checked inductivity of 1202 backedges. 0 proven. 1202 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:02:20,910 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:02:23,284 INFO L134 CoverageAnalysis]: Checked inductivity of 1202 backedges. 0 proven. 1202 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:02:23,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [232654581] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:02:23,286 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:02:23,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 67, 67] total 134 [2024-09-12 18:02:23,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998585129] [2024-09-12 18:02:23,287 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:02:23,287 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 134 states [2024-09-12 18:02:23,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:02:23,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 134 interpolants. [2024-09-12 18:02:23,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3308, Invalid=14514, Unknown=0, NotChecked=0, Total=17822 [2024-09-12 18:02:23,294 INFO L87 Difference]: Start difference. First operand 540 states and 586 transitions. Second operand has 134 states, 134 states have (on average 2.514925373134328) internal successors, (337), 132 states have internal predecessors, (337), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:02:23,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:02:23,994 INFO L93 Difference]: Finished difference Result 894 states and 972 transitions. [2024-09-12 18:02:23,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 130 states. [2024-09-12 18:02:23,994 INFO L78 Accepts]: Start accepts. Automaton has has 134 states, 134 states have (on average 2.514925373134328) internal successors, (337), 132 states have internal predecessors, (337), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 171 [2024-09-12 18:02:23,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:02:23,997 INFO L225 Difference]: With dead ends: 894 [2024-09-12 18:02:23,997 INFO L226 Difference]: Without dead ends: 856 [2024-09-12 18:02:23,998 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 411 GetRequests, 278 SyntacticMatches, 0 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6700 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=3314, Invalid=14776, Unknown=0, NotChecked=0, Total=18090 [2024-09-12 18:02:23,998 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 216 mSDsluCounter, 433 mSDsCounter, 0 mSdLazyCounter, 513 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 445 SdHoareTripleChecker+Invalid, 572 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 513 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 18:02:23,998 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [216 Valid, 445 Invalid, 572 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 513 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 18:02:23,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 856 states. [2024-09-12 18:02:24,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 856 to 556. [2024-09-12 18:02:24,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 556 states, 550 states have (on average 1.0872727272727272) internal successors, (598), 551 states have internal predecessors, (598), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:02:24,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 556 states to 556 states and 602 transitions. [2024-09-12 18:02:24,120 INFO L78 Accepts]: Start accepts. Automaton has 556 states and 602 transitions. Word has length 171 [2024-09-12 18:02:24,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:02:24,121 INFO L474 AbstractCegarLoop]: Abstraction has 556 states and 602 transitions. [2024-09-12 18:02:24,121 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 134 states, 134 states have (on average 2.514925373134328) internal successors, (337), 132 states have internal predecessors, (337), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:02:24,121 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:02:24,121 INFO L276 IsEmpty]: Start isEmpty. Operand 556 states and 602 transitions. [2024-09-12 18:02:24,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2024-09-12 18:02:24,122 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:02:24,122 INFO L216 NwaCegarLoop]: trace histogram [18, 17, 17, 17, 17, 17, 17, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:02:24,138 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 18:02:24,326 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,25 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:02:24,327 INFO L399 AbstractCegarLoop]: === Iteration 32 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2024-09-12 18:02:24,327 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:02:24,327 INFO L85 PathProgramCache]: Analyzing trace with hash 601745484, now seen corresponding path program 16 times [2024-09-12 18:02:24,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:02:24,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751864840] [2024-09-12 18:02:24,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:02:24,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:02:24,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:02:25,880 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:02:25,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:02:25,883 INFO L134 CoverageAnalysis]: Checked inductivity of 1362 backedges. 0 proven. 1362 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:02:25,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:02:25,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751864840] [2024-09-12 18:02:25,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751864840] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:02:25,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1702017886] [2024-09-12 18:02:25,883 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-12 18:02:25,883 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:02:25,884 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:02:25,885 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 18:02:25,886 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 18:02:25,960 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-12 18:02:25,961 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 18:02:25,965 INFO L262 TraceCheckSpWp]: Trace formula consists of 477 conjuncts, 70 conjuncts are in the unsatisfiable core [2024-09-12 18:02:25,967 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:02:26,343 INFO L134 CoverageAnalysis]: Checked inductivity of 1362 backedges. 0 proven. 1362 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:02:26,344 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:02:29,250 INFO L134 CoverageAnalysis]: Checked inductivity of 1362 backedges. 0 proven. 1362 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:02:29,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1702017886] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:02:29,251 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:02:29,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [71, 71, 71] total 142 [2024-09-12 18:02:29,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107532781] [2024-09-12 18:02:29,251 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:02:29,252 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 142 states [2024-09-12 18:02:29,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:02:29,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 142 interpolants. [2024-09-12 18:02:29,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3718, Invalid=16304, Unknown=0, NotChecked=0, Total=20022 [2024-09-12 18:02:29,256 INFO L87 Difference]: Start difference. First operand 556 states and 602 transitions. Second operand has 142 states, 142 states have (on average 2.5140845070422535) internal successors, (357), 140 states have internal predecessors, (357), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:02:30,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:02:30,045 INFO L93 Difference]: Finished difference Result 932 states and 1012 transitions. [2024-09-12 18:02:30,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 138 states. [2024-09-12 18:02:30,046 INFO L78 Accepts]: Start accepts. Automaton has has 142 states, 142 states have (on average 2.5140845070422535) internal successors, (357), 140 states have internal predecessors, (357), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 181 [2024-09-12 18:02:30,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:02:30,049 INFO L225 Difference]: With dead ends: 932 [2024-09-12 18:02:30,049 INFO L226 Difference]: Without dead ends: 892 [2024-09-12 18:02:30,050 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 435 GetRequests, 292 SyntacticMatches, 2 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7683 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=3724, Invalid=16582, Unknown=0, NotChecked=0, Total=20306 [2024-09-12 18:02:30,050 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 249 mSDsluCounter, 374 mSDsCounter, 0 mSdLazyCounter, 465 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 386 SdHoareTripleChecker+Invalid, 483 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 465 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 18:02:30,051 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [249 Valid, 386 Invalid, 483 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 465 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 18:02:30,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 892 states. [2024-09-12 18:02:30,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 892 to 572. [2024-09-12 18:02:30,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 572 states, 566 states have (on average 1.0848056537102473) internal successors, (614), 567 states have internal predecessors, (614), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:02:30,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 572 states to 572 states and 618 transitions. [2024-09-12 18:02:30,158 INFO L78 Accepts]: Start accepts. Automaton has 572 states and 618 transitions. Word has length 181 [2024-09-12 18:02:30,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:02:30,159 INFO L474 AbstractCegarLoop]: Abstraction has 572 states and 618 transitions. [2024-09-12 18:02:30,159 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 142 states, 142 states have (on average 2.5140845070422535) internal successors, (357), 140 states have internal predecessors, (357), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:02:30,161 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:02:30,161 INFO L276 IsEmpty]: Start isEmpty. Operand 572 states and 618 transitions. [2024-09-12 18:02:30,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2024-09-12 18:02:30,163 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:02:30,163 INFO L216 NwaCegarLoop]: trace histogram [19, 18, 18, 18, 18, 18, 18, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:02:30,179 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 18:02:30,367 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2024-09-12 18:02:30,368 INFO L399 AbstractCegarLoop]: === Iteration 33 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2024-09-12 18:02:30,368 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:02:30,368 INFO L85 PathProgramCache]: Analyzing trace with hash 1112455210, now seen corresponding path program 17 times [2024-09-12 18:02:30,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:02:30,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852653835] [2024-09-12 18:02:30,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:02:30,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:02:30,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:02:32,088 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:02:32,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:02:32,090 INFO L134 CoverageAnalysis]: Checked inductivity of 1532 backedges. 0 proven. 1532 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:02:32,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:02:32,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852653835] [2024-09-12 18:02:32,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852653835] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:02:32,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [3141809] [2024-09-12 18:02:32,091 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-12 18:02:32,091 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:02:32,091 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:02:32,093 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 18:02:32,094 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 18:02:32,181 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 19 check-sat command(s) [2024-09-12 18:02:32,181 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 18:02:32,183 INFO L262 TraceCheckSpWp]: Trace formula consists of 503 conjuncts, 74 conjuncts are in the unsatisfiable core [2024-09-12 18:02:32,185 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:02:32,430 INFO L134 CoverageAnalysis]: Checked inductivity of 1532 backedges. 0 proven. 1532 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:02:32,430 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:02:35,857 INFO L134 CoverageAnalysis]: Checked inductivity of 1532 backedges. 0 proven. 1532 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:02:35,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [3141809] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:02:35,857 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:02:35,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [75, 75, 75] total 150 [2024-09-12 18:02:35,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318852236] [2024-09-12 18:02:35,858 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:02:35,858 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 150 states [2024-09-12 18:02:35,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:02:35,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 150 interpolants. [2024-09-12 18:02:35,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4152, Invalid=18198, Unknown=0, NotChecked=0, Total=22350 [2024-09-12 18:02:35,862 INFO L87 Difference]: Start difference. First operand 572 states and 618 transitions. Second operand has 150 states, 150 states have (on average 2.513333333333333) internal successors, (377), 148 states have internal predecessors, (377), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:02:36,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:02:36,832 INFO L93 Difference]: Finished difference Result 970 states and 1052 transitions. [2024-09-12 18:02:36,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 146 states. [2024-09-12 18:02:36,832 INFO L78 Accepts]: Start accepts. Automaton has has 150 states, 150 states have (on average 2.513333333333333) internal successors, (377), 148 states have internal predecessors, (377), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 191 [2024-09-12 18:02:36,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:02:36,836 INFO L225 Difference]: With dead ends: 970 [2024-09-12 18:02:36,836 INFO L226 Difference]: Without dead ends: 928 [2024-09-12 18:02:36,838 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 459 GetRequests, 308 SyntacticMatches, 2 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8586 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=4158, Invalid=18492, Unknown=0, NotChecked=0, Total=22650 [2024-09-12 18:02:36,839 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 262 mSDsluCounter, 357 mSDsCounter, 0 mSdLazyCounter, 462 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 262 SdHoareTripleChecker+Valid, 369 SdHoareTripleChecker+Invalid, 519 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-12 18:02:36,840 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [262 Valid, 369 Invalid, 519 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 462 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-12 18:02:36,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 928 states. [2024-09-12 18:02:37,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 928 to 588. [2024-09-12 18:02:37,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 588 states, 582 states have (on average 1.0824742268041236) internal successors, (630), 583 states have internal predecessors, (630), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:02:37,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 588 states to 588 states and 634 transitions. [2024-09-12 18:02:37,013 INFO L78 Accepts]: Start accepts. Automaton has 588 states and 634 transitions. Word has length 191 [2024-09-12 18:02:37,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:02:37,014 INFO L474 AbstractCegarLoop]: Abstraction has 588 states and 634 transitions. [2024-09-12 18:02:37,014 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 150 states, 150 states have (on average 2.513333333333333) internal successors, (377), 148 states have internal predecessors, (377), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:02:37,014 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:02:37,014 INFO L276 IsEmpty]: Start isEmpty. Operand 588 states and 634 transitions. [2024-09-12 18:02:37,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2024-09-12 18:02:37,015 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:02:37,015 INFO L216 NwaCegarLoop]: trace histogram [20, 19, 19, 19, 19, 19, 19, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:02:37,028 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 18:02:37,219 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,27 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:02:37,219 INFO L399 AbstractCegarLoop]: === Iteration 34 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2024-09-12 18:02:37,220 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:02:37,220 INFO L85 PathProgramCache]: Analyzing trace with hash -1116941112, now seen corresponding path program 18 times [2024-09-12 18:02:37,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:02:37,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365990988] [2024-09-12 18:02:37,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:02:37,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:02:37,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:02:38,908 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:02:38,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:02:38,911 INFO L134 CoverageAnalysis]: Checked inductivity of 1712 backedges. 0 proven. 1712 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:02:38,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:02:38,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365990988] [2024-09-12 18:02:38,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365990988] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:02:38,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [759775111] [2024-09-12 18:02:38,911 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-12 18:02:38,911 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:02:38,911 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:02:38,913 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 18:02:38,914 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 18:02:38,998 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 20 check-sat command(s) [2024-09-12 18:02:38,998 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 18:02:39,000 INFO L262 TraceCheckSpWp]: Trace formula consists of 529 conjuncts, 81 conjuncts are in the unsatisfiable core [2024-09-12 18:02:39,003 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:02:39,222 INFO L134 CoverageAnalysis]: Checked inductivity of 1712 backedges. 0 proven. 1712 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:02:39,222 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:02:42,680 INFO L134 CoverageAnalysis]: Checked inductivity of 1712 backedges. 0 proven. 1712 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:02:42,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [759775111] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:02:42,680 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:02:42,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [79, 79, 79] total 158 [2024-09-12 18:02:42,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861768165] [2024-09-12 18:02:42,681 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:02:42,681 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 158 states [2024-09-12 18:02:42,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:02:42,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 158 interpolants. [2024-09-12 18:02:42,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4610, Invalid=20196, Unknown=0, NotChecked=0, Total=24806 [2024-09-12 18:02:42,684 INFO L87 Difference]: Start difference. First operand 588 states and 634 transitions. Second operand has 158 states, 158 states have (on average 2.5126582278481013) internal successors, (397), 156 states have internal predecessors, (397), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:02:43,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:02:43,718 INFO L93 Difference]: Finished difference Result 1008 states and 1092 transitions. [2024-09-12 18:02:43,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 154 states. [2024-09-12 18:02:43,719 INFO L78 Accepts]: Start accepts. Automaton has has 158 states, 158 states have (on average 2.5126582278481013) internal successors, (397), 156 states have internal predecessors, (397), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 201 [2024-09-12 18:02:43,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:02:43,723 INFO L225 Difference]: With dead ends: 1008 [2024-09-12 18:02:43,723 INFO L226 Difference]: Without dead ends: 964 [2024-09-12 18:02:43,724 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 483 GetRequests, 326 SyntacticMatches, 0 SemanticMatches, 157 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9385 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=4616, Invalid=20506, Unknown=0, NotChecked=0, Total=25122 [2024-09-12 18:02:43,724 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 276 mSDsluCounter, 408 mSDsCounter, 0 mSdLazyCounter, 503 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 276 SdHoareTripleChecker+Valid, 420 SdHoareTripleChecker+Invalid, 541 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 503 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-12 18:02:43,725 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [276 Valid, 420 Invalid, 541 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 503 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-12 18:02:43,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 964 states. [2024-09-12 18:02:43,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 964 to 604. [2024-09-12 18:02:43,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 604 states, 598 states have (on average 1.080267558528428) internal successors, (646), 599 states have internal predecessors, (646), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:02:43,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 604 states to 604 states and 650 transitions. [2024-09-12 18:02:43,883 INFO L78 Accepts]: Start accepts. Automaton has 604 states and 650 transitions. Word has length 201 [2024-09-12 18:02:43,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:02:43,884 INFO L474 AbstractCegarLoop]: Abstraction has 604 states and 650 transitions. [2024-09-12 18:02:43,884 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 158 states, 158 states have (on average 2.5126582278481013) internal successors, (397), 156 states have internal predecessors, (397), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:02:43,884 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:02:43,884 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states and 650 transitions. [2024-09-12 18:02:43,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2024-09-12 18:02:43,885 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:02:43,885 INFO L216 NwaCegarLoop]: trace histogram [21, 20, 20, 20, 20, 20, 20, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:02:43,900 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2024-09-12 18:02:44,089 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,28 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:02:44,090 INFO L399 AbstractCegarLoop]: === Iteration 35 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2024-09-12 18:02:44,090 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:02:44,090 INFO L85 PathProgramCache]: Analyzing trace with hash -928080346, now seen corresponding path program 19 times [2024-09-12 18:02:44,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:02:44,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933742994] [2024-09-12 18:02:44,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:02:44,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:02:44,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:02:46,419 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:02:46,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:02:46,421 INFO L134 CoverageAnalysis]: Checked inductivity of 1902 backedges. 0 proven. 1902 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:02:46,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:02:46,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933742994] [2024-09-12 18:02:46,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [933742994] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:02:46,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1989395928] [2024-09-12 18:02:46,422 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-12 18:02:46,422 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:02:46,422 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:02:46,423 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 18:02:46,432 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 18:02:46,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:02:46,513 INFO L262 TraceCheckSpWp]: Trace formula consists of 555 conjuncts, 82 conjuncts are in the unsatisfiable core [2024-09-12 18:02:46,515 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:02:46,792 INFO L134 CoverageAnalysis]: Checked inductivity of 1902 backedges. 0 proven. 1902 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:02:46,792 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:02:50,888 INFO L134 CoverageAnalysis]: Checked inductivity of 1902 backedges. 0 proven. 1902 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:02:50,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1989395928] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:02:50,888 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:02:50,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [83, 83, 83] total 166 [2024-09-12 18:02:50,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074305863] [2024-09-12 18:02:50,889 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:02:50,889 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 166 states [2024-09-12 18:02:50,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:02:50,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 166 interpolants. [2024-09-12 18:02:50,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5092, Invalid=22298, Unknown=0, NotChecked=0, Total=27390 [2024-09-12 18:02:50,893 INFO L87 Difference]: Start difference. First operand 604 states and 650 transitions. Second operand has 166 states, 166 states have (on average 2.5120481927710845) internal successors, (417), 164 states have internal predecessors, (417), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:02:52,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:02:52,086 INFO L93 Difference]: Finished difference Result 1046 states and 1132 transitions. [2024-09-12 18:02:52,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 162 states. [2024-09-12 18:02:52,086 INFO L78 Accepts]: Start accepts. Automaton has has 166 states, 166 states have (on average 2.5120481927710845) internal successors, (417), 164 states have internal predecessors, (417), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 211 [2024-09-12 18:02:52,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:02:52,089 INFO L225 Difference]: With dead ends: 1046 [2024-09-12 18:02:52,089 INFO L226 Difference]: Without dead ends: 1000 [2024-09-12 18:02:52,090 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 507 GetRequests, 340 SyntacticMatches, 2 SemanticMatches, 165 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10542 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=5098, Invalid=22624, Unknown=0, NotChecked=0, Total=27722 [2024-09-12 18:02:52,091 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 392 mSDsluCounter, 371 mSDsCounter, 0 mSdLazyCounter, 496 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 392 SdHoareTripleChecker+Valid, 383 SdHoareTripleChecker+Invalid, 566 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 496 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-12 18:02:52,091 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [392 Valid, 383 Invalid, 566 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 496 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-12 18:02:52,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1000 states. [2024-09-12 18:02:52,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1000 to 620. [2024-09-12 18:02:52,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 620 states, 614 states have (on average 1.0781758957654723) internal successors, (662), 615 states have internal predecessors, (662), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:02:52,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 620 states to 620 states and 666 transitions. [2024-09-12 18:02:52,272 INFO L78 Accepts]: Start accepts. Automaton has 620 states and 666 transitions. Word has length 211 [2024-09-12 18:02:52,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:02:52,272 INFO L474 AbstractCegarLoop]: Abstraction has 620 states and 666 transitions. [2024-09-12 18:02:52,273 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 166 states, 166 states have (on average 2.5120481927710845) internal successors, (417), 164 states have internal predecessors, (417), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:02:52,273 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:02:52,273 INFO L276 IsEmpty]: Start isEmpty. Operand 620 states and 666 transitions. [2024-09-12 18:02:52,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2024-09-12 18:02:52,274 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:02:52,274 INFO L216 NwaCegarLoop]: trace histogram [22, 21, 21, 21, 21, 21, 21, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:02:52,287 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 18:02:52,478 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2024-09-12 18:02:52,479 INFO L399 AbstractCegarLoop]: === Iteration 36 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2024-09-12 18:02:52,479 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:02:52,479 INFO L85 PathProgramCache]: Analyzing trace with hash -564759484, now seen corresponding path program 20 times [2024-09-12 18:02:52,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:02:52,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200241635] [2024-09-12 18:02:52,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:02:52,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:02:52,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:02:54,858 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:02:54,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:02:54,860 INFO L134 CoverageAnalysis]: Checked inductivity of 2102 backedges. 0 proven. 2102 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:02:54,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:02:54,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200241635] [2024-09-12 18:02:54,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200241635] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:02:54,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1335803009] [2024-09-12 18:02:54,861 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 18:02:54,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:02:54,861 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:02:54,862 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 18:02:54,865 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 18:02:54,946 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 18:02:54,946 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 18:02:54,948 INFO L262 TraceCheckSpWp]: Trace formula consists of 581 conjuncts, 86 conjuncts are in the unsatisfiable core [2024-09-12 18:02:54,950 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:02:55,240 INFO L134 CoverageAnalysis]: Checked inductivity of 2102 backedges. 0 proven. 2102 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:02:55,240 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:02:58,722 INFO L134 CoverageAnalysis]: Checked inductivity of 2102 backedges. 0 proven. 2102 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:02:58,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1335803009] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:02:58,722 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:02:58,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [87, 87, 87] total 174 [2024-09-12 18:02:58,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650460136] [2024-09-12 18:02:58,723 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:02:58,723 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 174 states [2024-09-12 18:02:58,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:02:58,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 174 interpolants. [2024-09-12 18:02:58,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5598, Invalid=24504, Unknown=0, NotChecked=0, Total=30102 [2024-09-12 18:02:58,726 INFO L87 Difference]: Start difference. First operand 620 states and 666 transitions. Second operand has 174 states, 174 states have (on average 2.5114942528735633) internal successors, (437), 172 states have internal predecessors, (437), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:03:00,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:03:00,009 INFO L93 Difference]: Finished difference Result 1084 states and 1172 transitions. [2024-09-12 18:03:00,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 170 states. [2024-09-12 18:03:00,009 INFO L78 Accepts]: Start accepts. Automaton has has 174 states, 174 states have (on average 2.5114942528735633) internal successors, (437), 172 states have internal predecessors, (437), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 221 [2024-09-12 18:03:00,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:03:00,016 INFO L225 Difference]: With dead ends: 1084 [2024-09-12 18:03:00,016 INFO L226 Difference]: Without dead ends: 1036 [2024-09-12 18:03:00,018 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 531 GetRequests, 356 SyntacticMatches, 2 SemanticMatches, 173 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11595 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=5604, Invalid=24846, Unknown=0, NotChecked=0, Total=30450 [2024-09-12 18:03:00,018 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 385 mSDsluCounter, 409 mSDsCounter, 0 mSdLazyCounter, 525 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 385 SdHoareTripleChecker+Valid, 421 SdHoareTripleChecker+Invalid, 592 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 525 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-12 18:03:00,018 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [385 Valid, 421 Invalid, 592 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 525 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-12 18:03:00,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1036 states. [2024-09-12 18:03:00,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1036 to 636. [2024-09-12 18:03:00,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 636 states, 630 states have (on average 1.0761904761904761) internal successors, (678), 631 states have internal predecessors, (678), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:03:00,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 636 states to 636 states and 682 transitions. [2024-09-12 18:03:00,218 INFO L78 Accepts]: Start accepts. Automaton has 636 states and 682 transitions. Word has length 221 [2024-09-12 18:03:00,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:03:00,219 INFO L474 AbstractCegarLoop]: Abstraction has 636 states and 682 transitions. [2024-09-12 18:03:00,219 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 174 states, 174 states have (on average 2.5114942528735633) internal successors, (437), 172 states have internal predecessors, (437), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:03:00,219 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:03:00,219 INFO L276 IsEmpty]: Start isEmpty. Operand 636 states and 682 transitions. [2024-09-12 18:03:00,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2024-09-12 18:03:00,220 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:03:00,221 INFO L216 NwaCegarLoop]: trace histogram [23, 22, 22, 22, 22, 22, 22, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:03:00,233 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2024-09-12 18:03:00,424 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2024-09-12 18:03:00,424 INFO L399 AbstractCegarLoop]: === Iteration 37 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2024-09-12 18:03:00,425 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:03:00,425 INFO L85 PathProgramCache]: Analyzing trace with hash 762492706, now seen corresponding path program 21 times [2024-09-12 18:03:00,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:03:00,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122475537] [2024-09-12 18:03:00,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:03:00,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:03:00,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:03:03,330 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:03:03,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:03:03,333 INFO L134 CoverageAnalysis]: Checked inductivity of 2312 backedges. 0 proven. 2312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:03:03,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:03:03,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122475537] [2024-09-12 18:03:03,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122475537] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:03:03,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1712855197] [2024-09-12 18:03:03,336 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-12 18:03:03,336 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:03:03,336 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:03:03,337 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 18:03:03,338 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 18:03:03,438 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 23 check-sat command(s) [2024-09-12 18:03:03,438 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 18:03:03,442 INFO L262 TraceCheckSpWp]: Trace formula consists of 607 conjuncts, 93 conjuncts are in the unsatisfiable core [2024-09-12 18:03:03,444 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:03:03,795 INFO L134 CoverageAnalysis]: Checked inductivity of 2312 backedges. 0 proven. 2312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:03:03,795 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:03:08,569 INFO L134 CoverageAnalysis]: Checked inductivity of 2312 backedges. 0 proven. 2312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:03:08,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1712855197] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:03:08,570 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:03:08,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [91, 91, 91] total 182 [2024-09-12 18:03:08,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343511628] [2024-09-12 18:03:08,570 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:03:08,571 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 182 states [2024-09-12 18:03:08,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:03:08,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 182 interpolants. [2024-09-12 18:03:08,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6128, Invalid=26814, Unknown=0, NotChecked=0, Total=32942 [2024-09-12 18:03:08,574 INFO L87 Difference]: Start difference. First operand 636 states and 682 transitions. Second operand has 182 states, 182 states have (on average 2.510989010989011) internal successors, (457), 180 states have internal predecessors, (457), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:03:10,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:03:10,122 INFO L93 Difference]: Finished difference Result 1122 states and 1212 transitions. [2024-09-12 18:03:10,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 178 states. [2024-09-12 18:03:10,122 INFO L78 Accepts]: Start accepts. Automaton has has 182 states, 182 states have (on average 2.510989010989011) internal successors, (457), 180 states have internal predecessors, (457), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 231 [2024-09-12 18:03:10,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:03:10,126 INFO L225 Difference]: With dead ends: 1122 [2024-09-12 18:03:10,126 INFO L226 Difference]: Without dead ends: 1072 [2024-09-12 18:03:10,127 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 555 GetRequests, 374 SyntacticMatches, 0 SemanticMatches, 181 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12520 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=6134, Invalid=27172, Unknown=0, NotChecked=0, Total=33306 [2024-09-12 18:03:10,128 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 335 mSDsluCounter, 475 mSDsCounter, 0 mSdLazyCounter, 586 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 335 SdHoareTripleChecker+Valid, 487 SdHoareTripleChecker+Invalid, 653 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 586 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-12 18:03:10,128 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [335 Valid, 487 Invalid, 653 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 586 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-12 18:03:10,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1072 states. [2024-09-12 18:03:10,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1072 to 652. [2024-09-12 18:03:10,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 652 states, 646 states have (on average 1.0743034055727554) internal successors, (694), 647 states have internal predecessors, (694), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:03:10,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 652 states to 652 states and 698 transitions. [2024-09-12 18:03:10,356 INFO L78 Accepts]: Start accepts. Automaton has 652 states and 698 transitions. Word has length 231 [2024-09-12 18:03:10,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:03:10,356 INFO L474 AbstractCegarLoop]: Abstraction has 652 states and 698 transitions. [2024-09-12 18:03:10,360 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 182 states, 182 states have (on average 2.510989010989011) internal successors, (457), 180 states have internal predecessors, (457), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:03:10,360 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:03:10,360 INFO L276 IsEmpty]: Start isEmpty. Operand 652 states and 698 transitions. [2024-09-12 18:03:10,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2024-09-12 18:03:10,365 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:03:10,365 INFO L216 NwaCegarLoop]: trace histogram [24, 23, 23, 23, 23, 23, 23, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:03:10,378 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 18:03:10,565 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2024-09-12 18:03:10,567 INFO L399 AbstractCegarLoop]: === Iteration 38 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2024-09-12 18:03:10,567 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:03:10,567 INFO L85 PathProgramCache]: Analyzing trace with hash -941766976, now seen corresponding path program 22 times [2024-09-12 18:03:10,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:03:10,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124733758] [2024-09-12 18:03:10,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:03:10,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:03:10,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:03:13,069 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:03:13,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:03:13,071 INFO L134 CoverageAnalysis]: Checked inductivity of 2532 backedges. 0 proven. 2532 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:03:13,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:03:13,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124733758] [2024-09-12 18:03:13,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124733758] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:03:13,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1919375536] [2024-09-12 18:03:13,072 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-12 18:03:13,072 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:03:13,072 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:03:13,073 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 18:03:13,075 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 18:03:13,157 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-12 18:03:13,158 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 18:03:13,160 INFO L262 TraceCheckSpWp]: Trace formula consists of 633 conjuncts, 94 conjuncts are in the unsatisfiable core [2024-09-12 18:03:13,162 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:03:13,412 INFO L134 CoverageAnalysis]: Checked inductivity of 2532 backedges. 0 proven. 2532 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:03:13,412 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:03:17,616 INFO L134 CoverageAnalysis]: Checked inductivity of 2532 backedges. 0 proven. 2532 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:03:17,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1919375536] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:03:17,617 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:03:17,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [95, 95, 95] total 190 [2024-09-12 18:03:17,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011263923] [2024-09-12 18:03:17,617 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:03:17,617 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 190 states [2024-09-12 18:03:17,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:03:17,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 190 interpolants. [2024-09-12 18:03:17,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6682, Invalid=29228, Unknown=0, NotChecked=0, Total=35910 [2024-09-12 18:03:17,624 INFO L87 Difference]: Start difference. First operand 652 states and 698 transitions. Second operand has 190 states, 190 states have (on average 2.5105263157894737) internal successors, (477), 188 states have internal predecessors, (477), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:03:19,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:03:19,482 INFO L93 Difference]: Finished difference Result 1160 states and 1252 transitions. [2024-09-12 18:03:19,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 186 states. [2024-09-12 18:03:19,483 INFO L78 Accepts]: Start accepts. Automaton has has 190 states, 190 states have (on average 2.5105263157894737) internal successors, (477), 188 states have internal predecessors, (477), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 241 [2024-09-12 18:03:19,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:03:19,487 INFO L225 Difference]: With dead ends: 1160 [2024-09-12 18:03:19,487 INFO L226 Difference]: Without dead ends: 1108 [2024-09-12 18:03:19,490 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 579 GetRequests, 388 SyntacticMatches, 2 SemanticMatches, 189 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13851 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=6688, Invalid=29602, Unknown=0, NotChecked=0, Total=36290 [2024-09-12 18:03:19,490 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 350 mSDsluCounter, 457 mSDsCounter, 0 mSdLazyCounter, 579 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 350 SdHoareTripleChecker+Valid, 469 SdHoareTripleChecker+Invalid, 666 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 579 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-12 18:03:19,490 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [350 Valid, 469 Invalid, 666 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 579 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-12 18:03:19,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1108 states. [2024-09-12 18:03:19,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1108 to 668. [2024-09-12 18:03:19,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 668 states, 662 states have (on average 1.0725075528700907) internal successors, (710), 663 states have internal predecessors, (710), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:03:19,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 668 states to 668 states and 714 transitions. [2024-09-12 18:03:19,855 INFO L78 Accepts]: Start accepts. Automaton has 668 states and 714 transitions. Word has length 241 [2024-09-12 18:03:19,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:03:19,855 INFO L474 AbstractCegarLoop]: Abstraction has 668 states and 714 transitions. [2024-09-12 18:03:19,855 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 190 states, 190 states have (on average 2.5105263157894737) internal successors, (477), 188 states have internal predecessors, (477), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:03:19,856 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:03:19,856 INFO L276 IsEmpty]: Start isEmpty. Operand 668 states and 714 transitions. [2024-09-12 18:03:19,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2024-09-12 18:03:19,857 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:03:19,858 INFO L216 NwaCegarLoop]: trace histogram [25, 24, 24, 24, 24, 24, 24, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:03:19,877 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 18:03:20,058 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2024-09-12 18:03:20,058 INFO L399 AbstractCegarLoop]: === Iteration 39 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2024-09-12 18:03:20,059 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:03:20,059 INFO L85 PathProgramCache]: Analyzing trace with hash -1874984162, now seen corresponding path program 23 times [2024-09-12 18:03:20,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:03:20,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928568829] [2024-09-12 18:03:20,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:03:20,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:03:20,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:03:23,873 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:03:23,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:03:23,877 INFO L134 CoverageAnalysis]: Checked inductivity of 2762 backedges. 0 proven. 2762 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:03:23,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:03:23,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928568829] [2024-09-12 18:03:23,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928568829] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:03:23,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [573367705] [2024-09-12 18:03:23,877 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-12 18:03:23,877 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:03:23,878 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:03:23,879 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 18:03:23,881 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 18:03:24,014 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 25 check-sat command(s) [2024-09-12 18:03:24,014 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 18:03:24,018 INFO L262 TraceCheckSpWp]: Trace formula consists of 659 conjuncts, 101 conjuncts are in the unsatisfiable core [2024-09-12 18:03:24,023 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:03:24,392 INFO L134 CoverageAnalysis]: Checked inductivity of 2762 backedges. 0 proven. 2762 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:03:24,392 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:03:31,057 INFO L134 CoverageAnalysis]: Checked inductivity of 2762 backedges. 0 proven. 2762 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:03:31,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [573367705] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:03:31,058 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:03:31,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [99, 99, 99] total 198 [2024-09-12 18:03:31,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840551103] [2024-09-12 18:03:31,058 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:03:31,059 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 198 states [2024-09-12 18:03:31,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:03:31,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 198 interpolants. [2024-09-12 18:03:31,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7260, Invalid=31746, Unknown=0, NotChecked=0, Total=39006 [2024-09-12 18:03:31,065 INFO L87 Difference]: Start difference. First operand 668 states and 714 transitions. Second operand has 198 states, 198 states have (on average 2.51010101010101) internal successors, (497), 196 states have internal predecessors, (497), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:03:34,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:03:34,093 INFO L93 Difference]: Finished difference Result 1200 states and 1294 transitions. [2024-09-12 18:03:34,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 194 states. [2024-09-12 18:03:34,093 INFO L78 Accepts]: Start accepts. Automaton has has 198 states, 198 states have (on average 2.51010101010101) internal successors, (497), 196 states have internal predecessors, (497), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 251 [2024-09-12 18:03:34,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:03:34,098 INFO L225 Difference]: With dead ends: 1200 [2024-09-12 18:03:34,098 INFO L226 Difference]: Without dead ends: 1146 [2024-09-12 18:03:34,100 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 603 GetRequests, 406 SyntacticMatches, 0 SemanticMatches, 197 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14860 ImplicationChecksByTransitivity, 9.0s TimeCoverageRelationStatistics Valid=7266, Invalid=32136, Unknown=0, NotChecked=0, Total=39402 [2024-09-12 18:03:34,101 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 412 mSDsluCounter, 496 mSDsCounter, 0 mSdLazyCounter, 621 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 412 SdHoareTripleChecker+Valid, 508 SdHoareTripleChecker+Invalid, 646 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 621 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-12 18:03:34,101 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [412 Valid, 508 Invalid, 646 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 621 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-12 18:03:34,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1146 states. [2024-09-12 18:03:34,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1146 to 684. [2024-09-12 18:03:34,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 684 states, 678 states have (on average 1.0737463126843658) internal successors, (728), 679 states have internal predecessors, (728), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:03:34,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 684 states to 684 states and 732 transitions. [2024-09-12 18:03:34,462 INFO L78 Accepts]: Start accepts. Automaton has 684 states and 732 transitions. Word has length 251 [2024-09-12 18:03:34,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:03:34,462 INFO L474 AbstractCegarLoop]: Abstraction has 684 states and 732 transitions. [2024-09-12 18:03:34,463 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 198 states, 198 states have (on average 2.51010101010101) internal successors, (497), 196 states have internal predecessors, (497), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:03:34,463 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:03:34,463 INFO L276 IsEmpty]: Start isEmpty. Operand 684 states and 732 transitions. [2024-09-12 18:03:34,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2024-09-12 18:03:34,465 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:03:34,465 INFO L216 NwaCegarLoop]: trace histogram [26, 25, 25, 25, 25, 25, 25, 24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:03:34,484 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2024-09-12 18:03:34,669 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2024-09-12 18:03:34,670 INFO L399 AbstractCegarLoop]: === Iteration 40 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2024-09-12 18:03:34,670 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:03:34,670 INFO L85 PathProgramCache]: Analyzing trace with hash -402273220, now seen corresponding path program 24 times [2024-09-12 18:03:34,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:03:34,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826663028] [2024-09-12 18:03:34,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:03:34,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:03:34,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:03:38,802 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:03:38,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:03:38,805 INFO L134 CoverageAnalysis]: Checked inductivity of 3002 backedges. 0 proven. 3002 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:03:38,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:03:38,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826663028] [2024-09-12 18:03:38,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826663028] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:03:38,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [171630] [2024-09-12 18:03:38,806 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-12 18:03:38,806 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:03:38,806 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:03:38,808 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 18:03:38,810 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 18:03:38,945 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 26 check-sat command(s) [2024-09-12 18:03:38,945 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 18:03:38,950 INFO L262 TraceCheckSpWp]: Trace formula consists of 685 conjuncts, 105 conjuncts are in the unsatisfiable core [2024-09-12 18:03:38,954 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:03:39,342 INFO L134 CoverageAnalysis]: Checked inductivity of 3002 backedges. 0 proven. 3002 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:03:39,343 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:03:46,496 INFO L134 CoverageAnalysis]: Checked inductivity of 3002 backedges. 0 proven. 3002 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:03:46,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [171630] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:03:46,497 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:03:46,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [103, 103, 103] total 206 [2024-09-12 18:03:46,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025098452] [2024-09-12 18:03:46,497 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:03:46,498 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 206 states [2024-09-12 18:03:46,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:03:46,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 206 interpolants. [2024-09-12 18:03:46,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7862, Invalid=34368, Unknown=0, NotChecked=0, Total=42230 [2024-09-12 18:03:46,505 INFO L87 Difference]: Start difference. First operand 684 states and 732 transitions. Second operand has 206 states, 206 states have (on average 2.5097087378640777) internal successors, (517), 204 states have internal predecessors, (517), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:03:49,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:03:49,864 INFO L93 Difference]: Finished difference Result 1240 states and 1338 transitions. [2024-09-12 18:03:49,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 202 states. [2024-09-12 18:03:49,864 INFO L78 Accepts]: Start accepts. Automaton has has 206 states, 206 states have (on average 2.5097087378640777) internal successors, (517), 204 states have internal predecessors, (517), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 261 [2024-09-12 18:03:49,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:03:49,869 INFO L225 Difference]: With dead ends: 1240 [2024-09-12 18:03:49,869 INFO L226 Difference]: Without dead ends: 1184 [2024-09-12 18:03:49,872 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 627 GetRequests, 422 SyntacticMatches, 0 SemanticMatches, 205 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16105 ImplicationChecksByTransitivity, 9.7s TimeCoverageRelationStatistics Valid=7868, Invalid=34774, Unknown=0, NotChecked=0, Total=42642 [2024-09-12 18:03:49,872 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 406 mSDsluCounter, 495 mSDsCounter, 0 mSdLazyCounter, 622 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 406 SdHoareTripleChecker+Valid, 507 SdHoareTripleChecker+Invalid, 692 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 622 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-09-12 18:03:49,873 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [406 Valid, 507 Invalid, 692 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 622 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-09-12 18:03:49,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1184 states. [2024-09-12 18:03:50,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1184 to 700. [2024-09-12 18:03:50,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 700 states, 694 states have (on average 1.07492795389049) internal successors, (746), 695 states have internal predecessors, (746), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:03:50,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 700 states to 700 states and 750 transitions. [2024-09-12 18:03:50,285 INFO L78 Accepts]: Start accepts. Automaton has 700 states and 750 transitions. Word has length 261 [2024-09-12 18:03:50,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:03:50,286 INFO L474 AbstractCegarLoop]: Abstraction has 700 states and 750 transitions. [2024-09-12 18:03:50,286 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 206 states, 206 states have (on average 2.5097087378640777) internal successors, (517), 204 states have internal predecessors, (517), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:03:50,286 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:03:50,286 INFO L276 IsEmpty]: Start isEmpty. Operand 700 states and 750 transitions. [2024-09-12 18:03:50,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2024-09-12 18:03:50,288 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:03:50,288 INFO L216 NwaCegarLoop]: trace histogram [27, 26, 26, 26, 26, 26, 26, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:03:50,307 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2024-09-12 18:03:50,493 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2024-09-12 18:03:50,493 INFO L399 AbstractCegarLoop]: === Iteration 41 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2024-09-12 18:03:50,493 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:03:50,493 INFO L85 PathProgramCache]: Analyzing trace with hash 494109210, now seen corresponding path program 25 times [2024-09-12 18:03:50,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:03:50,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556451299] [2024-09-12 18:03:50,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:03:50,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:03:50,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:03:55,009 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:03:55,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:03:55,012 INFO L134 CoverageAnalysis]: Checked inductivity of 3252 backedges. 0 proven. 3252 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:03:55,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:03:55,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556451299] [2024-09-12 18:03:55,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556451299] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:03:55,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1871365020] [2024-09-12 18:03:55,013 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-12 18:03:55,013 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:03:55,013 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:03:55,015 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 18:03:55,016 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 18:03:55,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:03:55,144 INFO L262 TraceCheckSpWp]: Trace formula consists of 711 conjuncts, 106 conjuncts are in the unsatisfiable core [2024-09-12 18:03:55,149 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:03:55,530 INFO L134 CoverageAnalysis]: Checked inductivity of 3252 backedges. 0 proven. 3252 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:03:55,530 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:04:03,419 INFO L134 CoverageAnalysis]: Checked inductivity of 3252 backedges. 0 proven. 3252 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:04:03,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1871365020] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:04:03,419 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:04:03,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [107, 107, 107] total 214 [2024-09-12 18:04:03,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807390838] [2024-09-12 18:04:03,420 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:04:03,421 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 214 states [2024-09-12 18:04:03,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:04:03,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 214 interpolants. [2024-09-12 18:04:03,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8488, Invalid=37094, Unknown=0, NotChecked=0, Total=45582 [2024-09-12 18:04:03,431 INFO L87 Difference]: Start difference. First operand 700 states and 750 transitions. Second operand has 214 states, 214 states have (on average 2.5093457943925235) internal successors, (537), 212 states have internal predecessors, (537), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:04:07,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:04:07,101 INFO L93 Difference]: Finished difference Result 1280 states and 1382 transitions. [2024-09-12 18:04:07,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 210 states. [2024-09-12 18:04:07,102 INFO L78 Accepts]: Start accepts. Automaton has has 214 states, 214 states have (on average 2.5093457943925235) internal successors, (537), 212 states have internal predecessors, (537), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 271 [2024-09-12 18:04:07,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:04:07,106 INFO L225 Difference]: With dead ends: 1280 [2024-09-12 18:04:07,107 INFO L226 Difference]: Without dead ends: 1222 [2024-09-12 18:04:07,109 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 651 GetRequests, 436 SyntacticMatches, 2 SemanticMatches, 213 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17610 ImplicationChecksByTransitivity, 10.7s TimeCoverageRelationStatistics Valid=8494, Invalid=37516, Unknown=0, NotChecked=0, Total=46010 [2024-09-12 18:04:07,110 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 568 mSDsluCounter, 466 mSDsCounter, 0 mSdLazyCounter, 606 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 568 SdHoareTripleChecker+Valid, 478 SdHoareTripleChecker+Invalid, 725 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 606 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-09-12 18:04:07,110 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [568 Valid, 478 Invalid, 725 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 606 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-09-12 18:04:07,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1222 states. [2024-09-12 18:04:07,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1222 to 716. [2024-09-12 18:04:07,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 716 states, 710 states have (on average 1.076056338028169) internal successors, (764), 711 states have internal predecessors, (764), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:04:07,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 716 states to 716 states and 768 transitions. [2024-09-12 18:04:07,564 INFO L78 Accepts]: Start accepts. Automaton has 716 states and 768 transitions. Word has length 271 [2024-09-12 18:04:07,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:04:07,565 INFO L474 AbstractCegarLoop]: Abstraction has 716 states and 768 transitions. [2024-09-12 18:04:07,565 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 214 states, 214 states have (on average 2.5093457943925235) internal successors, (537), 212 states have internal predecessors, (537), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:04:07,565 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:04:07,566 INFO L276 IsEmpty]: Start isEmpty. Operand 716 states and 768 transitions. [2024-09-12 18:04:07,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2024-09-12 18:04:07,567 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:04:07,567 INFO L216 NwaCegarLoop]: trace histogram [28, 27, 27, 27, 27, 27, 27, 26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:04:07,586 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2024-09-12 18:04:07,771 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,35 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:04:07,772 INFO L399 AbstractCegarLoop]: === Iteration 42 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2024-09-12 18:04:07,772 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:04:07,772 INFO L85 PathProgramCache]: Analyzing trace with hash -1718516552, now seen corresponding path program 26 times [2024-09-12 18:04:07,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:04:07,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65453542] [2024-09-12 18:04:07,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:04:07,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:04:07,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:04:12,659 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:04:12,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:04:12,663 INFO L134 CoverageAnalysis]: Checked inductivity of 3512 backedges. 0 proven. 3512 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:04:12,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:04:12,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65453542] [2024-09-12 18:04:12,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65453542] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:04:12,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1828175915] [2024-09-12 18:04:12,663 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 18:04:12,663 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:04:12,664 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:04:12,665 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 18:04:12,666 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 18:04:12,791 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 18:04:12,791 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 18:04:12,799 INFO L262 TraceCheckSpWp]: Trace formula consists of 737 conjuncts, 110 conjuncts are in the unsatisfiable core [2024-09-12 18:04:12,804 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:04:13,224 INFO L134 CoverageAnalysis]: Checked inductivity of 3512 backedges. 0 proven. 3512 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:04:13,224 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:04:21,647 INFO L134 CoverageAnalysis]: Checked inductivity of 3512 backedges. 0 proven. 3512 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:04:21,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1828175915] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:04:21,648 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:04:21,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [111, 111, 111] total 222 [2024-09-12 18:04:21,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289240372] [2024-09-12 18:04:21,649 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:04:21,649 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 222 states [2024-09-12 18:04:21,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:04:21,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 222 interpolants. [2024-09-12 18:04:21,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9138, Invalid=39924, Unknown=0, NotChecked=0, Total=49062 [2024-09-12 18:04:21,660 INFO L87 Difference]: Start difference. First operand 716 states and 768 transitions. Second operand has 222 states, 222 states have (on average 2.509009009009009) internal successors, (557), 220 states have internal predecessors, (557), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:04:25,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:04:25,949 INFO L93 Difference]: Finished difference Result 1320 states and 1426 transitions. [2024-09-12 18:04:25,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 218 states. [2024-09-12 18:04:25,950 INFO L78 Accepts]: Start accepts. Automaton has has 222 states, 222 states have (on average 2.509009009009009) internal successors, (557), 220 states have internal predecessors, (557), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 281 [2024-09-12 18:04:25,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:04:25,955 INFO L225 Difference]: With dead ends: 1320 [2024-09-12 18:04:25,955 INFO L226 Difference]: Without dead ends: 1260 [2024-09-12 18:04:25,958 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 675 GetRequests, 452 SyntacticMatches, 2 SemanticMatches, 221 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18963 ImplicationChecksByTransitivity, 11.5s TimeCoverageRelationStatistics Valid=9144, Invalid=40362, Unknown=0, NotChecked=0, Total=49506 [2024-09-12 18:04:25,958 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 463 mSDsluCounter, 491 mSDsCounter, 0 mSdLazyCounter, 641 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 463 SdHoareTripleChecker+Valid, 503 SdHoareTripleChecker+Invalid, 743 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 641 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-09-12 18:04:25,959 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [463 Valid, 503 Invalid, 743 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 641 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-09-12 18:04:25,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1260 states. [2024-09-12 18:04:26,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1260 to 732. [2024-09-12 18:04:26,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 732 states, 726 states have (on average 1.0771349862258952) internal successors, (782), 727 states have internal predecessors, (782), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:04:26,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 732 states to 732 states and 786 transitions. [2024-09-12 18:04:26,513 INFO L78 Accepts]: Start accepts. Automaton has 732 states and 786 transitions. Word has length 281 [2024-09-12 18:04:26,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:04:26,514 INFO L474 AbstractCegarLoop]: Abstraction has 732 states and 786 transitions. [2024-09-12 18:04:26,514 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 222 states, 222 states have (on average 2.509009009009009) internal successors, (557), 220 states have internal predecessors, (557), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:04:26,515 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:04:26,515 INFO L276 IsEmpty]: Start isEmpty. Operand 732 states and 786 transitions. [2024-09-12 18:04:26,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2024-09-12 18:04:26,516 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:04:26,517 INFO L216 NwaCegarLoop]: trace histogram [29, 28, 28, 28, 28, 28, 28, 27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:04:26,535 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2024-09-12 18:04:26,717 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2024-09-12 18:04:26,718 INFO L399 AbstractCegarLoop]: === Iteration 43 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2024-09-12 18:04:26,718 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:04:26,718 INFO L85 PathProgramCache]: Analyzing trace with hash -835308522, now seen corresponding path program 27 times [2024-09-12 18:04:26,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:04:26,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555221668] [2024-09-12 18:04:26,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:04:26,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:04:26,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:04:31,973 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:04:31,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:04:31,976 INFO L134 CoverageAnalysis]: Checked inductivity of 3782 backedges. 0 proven. 3782 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:04:31,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:04:31,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555221668] [2024-09-12 18:04:31,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555221668] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:04:31,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1786389103] [2024-09-12 18:04:31,977 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-12 18:04:31,977 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:04:31,977 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:04:31,979 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 18:04:31,980 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 18:04:32,164 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 29 check-sat command(s) [2024-09-12 18:04:32,164 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 18:04:32,175 INFO L262 TraceCheckSpWp]: Trace formula consists of 763 conjuncts, 117 conjuncts are in the unsatisfiable core [2024-09-12 18:04:32,180 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:04:32,627 INFO L134 CoverageAnalysis]: Checked inductivity of 3782 backedges. 0 proven. 3782 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:04:32,627 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:04:40,254 INFO L134 CoverageAnalysis]: Checked inductivity of 3782 backedges. 0 proven. 3782 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:04:40,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1786389103] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:04:40,255 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:04:40,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [115, 115, 115] total 230 [2024-09-12 18:04:40,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123984684] [2024-09-12 18:04:40,255 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:04:40,256 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 230 states [2024-09-12 18:04:40,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:04:40,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 230 interpolants. [2024-09-12 18:04:40,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9812, Invalid=42858, Unknown=0, NotChecked=0, Total=52670 [2024-09-12 18:04:40,268 INFO L87 Difference]: Start difference. First operand 732 states and 786 transitions. Second operand has 230 states, 230 states have (on average 2.508695652173913) internal successors, (577), 228 states have internal predecessors, (577), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:04:45,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:04:45,089 INFO L93 Difference]: Finished difference Result 1360 states and 1470 transitions. [2024-09-12 18:04:45,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 226 states. [2024-09-12 18:04:45,090 INFO L78 Accepts]: Start accepts. Automaton has has 230 states, 230 states have (on average 2.508695652173913) internal successors, (577), 228 states have internal predecessors, (577), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 291 [2024-09-12 18:04:45,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:04:45,102 INFO L225 Difference]: With dead ends: 1360 [2024-09-12 18:04:45,102 INFO L226 Difference]: Without dead ends: 1298 [2024-09-12 18:04:45,109 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 699 GetRequests, 470 SyntacticMatches, 0 SemanticMatches, 229 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20140 ImplicationChecksByTransitivity, 10.9s TimeCoverageRelationStatistics Valid=9818, Invalid=43312, Unknown=0, NotChecked=0, Total=53130 [2024-09-12 18:04:45,112 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 464 mSDsluCounter, 529 mSDsCounter, 0 mSdLazyCounter, 679 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 464 SdHoareTripleChecker+Valid, 541 SdHoareTripleChecker+Invalid, 780 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 679 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-09-12 18:04:45,112 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [464 Valid, 541 Invalid, 780 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 679 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-09-12 18:04:45,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1298 states. [2024-09-12 18:04:46,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1298 to 748. [2024-09-12 18:04:46,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 748 states, 742 states have (on average 1.0781671159029649) internal successors, (800), 743 states have internal predecessors, (800), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:04:46,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 748 states to 748 states and 804 transitions. [2024-09-12 18:04:46,186 INFO L78 Accepts]: Start accepts. Automaton has 748 states and 804 transitions. Word has length 291 [2024-09-12 18:04:46,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:04:46,186 INFO L474 AbstractCegarLoop]: Abstraction has 748 states and 804 transitions. [2024-09-12 18:04:46,187 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 230 states, 230 states have (on average 2.508695652173913) internal successors, (577), 228 states have internal predecessors, (577), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:04:46,187 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:04:46,187 INFO L276 IsEmpty]: Start isEmpty. Operand 748 states and 804 transitions. [2024-09-12 18:04:46,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2024-09-12 18:04:46,194 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:04:46,195 INFO L216 NwaCegarLoop]: trace histogram [47, 47, 47, 47, 47, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:04:46,217 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2024-09-12 18:04:46,398 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,37 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:04:46,399 INFO L399 AbstractCegarLoop]: === Iteration 44 === Targeting mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2024-09-12 18:04:46,402 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:04:46,402 INFO L85 PathProgramCache]: Analyzing trace with hash 667914649, now seen corresponding path program 5 times [2024-09-12 18:04:46,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:04:46,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254847667] [2024-09-12 18:04:46,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:04:46,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:04:46,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:04:50,538 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:04:50,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:04:50,548 INFO L134 CoverageAnalysis]: Checked inductivity of 6486 backedges. 0 proven. 6486 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:04:50,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:04:50,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254847667] [2024-09-12 18:04:50,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254847667] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:04:50,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [468625497] [2024-09-12 18:04:50,549 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-12 18:04:50,549 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:04:50,549 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:04:50,554 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 18:04:50,556 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 18:04:50,758 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 47 check-sat command(s) [2024-09-12 18:04:50,758 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 18:04:50,764 INFO L262 TraceCheckSpWp]: Trace formula consists of 782 conjuncts, 95 conjuncts are in the unsatisfiable core [2024-09-12 18:04:50,768 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:04:51,079 INFO L134 CoverageAnalysis]: Checked inductivity of 6486 backedges. 0 proven. 6486 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:04:51,079 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:04:58,240 INFO L134 CoverageAnalysis]: Checked inductivity of 6486 backedges. 0 proven. 6486 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:04:58,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [468625497] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:04:58,241 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:04:58,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [95, 95, 95] total 191 [2024-09-12 18:04:58,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811825850] [2024-09-12 18:04:58,242 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:04:58,242 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 192 states [2024-09-12 18:04:58,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:04:58,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 192 interpolants. [2024-09-12 18:04:58,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9311, Invalid=27361, Unknown=0, NotChecked=0, Total=36672 [2024-09-12 18:04:58,248 INFO L87 Difference]: Start difference. First operand 748 states and 804 transitions. Second operand has 192 states, 191 states have (on average 3.020942408376963) internal successors, (577), 192 states have internal predecessors, (577), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:04:59,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:04:59,702 INFO L93 Difference]: Finished difference Result 1102 states and 1253 transitions. [2024-09-12 18:04:59,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 190 states. [2024-09-12 18:04:59,703 INFO L78 Accepts]: Start accepts. Automaton has has 192 states, 191 states have (on average 3.020942408376963) internal successors, (577), 192 states have internal predecessors, (577), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 290 [2024-09-12 18:04:59,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:04:59,707 INFO L225 Difference]: With dead ends: 1102 [2024-09-12 18:04:59,707 INFO L226 Difference]: Without dead ends: 1101 [2024-09-12 18:04:59,709 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 676 GetRequests, 486 SyntacticMatches, 0 SemanticMatches, 190 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11415 ImplicationChecksByTransitivity, 9.4s TimeCoverageRelationStatistics Valid=9311, Invalid=27361, Unknown=0, NotChecked=0, Total=36672 [2024-09-12 18:04:59,710 INFO L434 NwaCegarLoop]: 18 mSDtfsCounter, 211 mSDsluCounter, 536 mSDsCounter, 0 mSdLazyCounter, 351 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 554 SdHoareTripleChecker+Invalid, 352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 351 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-12 18:04:59,710 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [211 Valid, 554 Invalid, 352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 351 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-12 18:04:59,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1101 states. [2024-09-12 18:05:00,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1101 to 1036. [2024-09-12 18:05:00,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1036 states, 1030 states have (on average 1.0932038834951456) internal successors, (1126), 1031 states have internal predecessors, (1126), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:05:00,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1036 states to 1036 states and 1130 transitions. [2024-09-12 18:05:00,328 INFO L78 Accepts]: Start accepts. Automaton has 1036 states and 1130 transitions. Word has length 290 [2024-09-12 18:05:00,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:05:00,329 INFO L474 AbstractCegarLoop]: Abstraction has 1036 states and 1130 transitions. [2024-09-12 18:05:00,329 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 192 states, 191 states have (on average 3.020942408376963) internal successors, (577), 192 states have internal predecessors, (577), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:05:00,329 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:05:00,329 INFO L276 IsEmpty]: Start isEmpty. Operand 1036 states and 1130 transitions. [2024-09-12 18:05:00,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2024-09-12 18:05:00,331 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:05:00,331 INFO L216 NwaCegarLoop]: trace histogram [30, 29, 29, 29, 29, 29, 29, 28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:05:00,349 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2024-09-12 18:05:00,535 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,38 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:05:00,536 INFO L399 AbstractCegarLoop]: === Iteration 45 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2024-09-12 18:05:00,536 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:05:00,536 INFO L85 PathProgramCache]: Analyzing trace with hash -469503948, now seen corresponding path program 28 times [2024-09-12 18:05:00,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:05:00,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175116154] [2024-09-12 18:05:00,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:05:00,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:05:00,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:05:06,148 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:05:06,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:05:06,151 INFO L134 CoverageAnalysis]: Checked inductivity of 4062 backedges. 0 proven. 4062 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:05:06,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:05:06,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175116154] [2024-09-12 18:05:06,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175116154] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:05:06,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [824574304] [2024-09-12 18:05:06,152 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-12 18:05:06,152 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:05:06,152 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:05:06,154 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 18:05:06,155 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 18:05:06,285 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-12 18:05:06,285 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 18:05:06,291 INFO L262 TraceCheckSpWp]: Trace formula consists of 789 conjuncts, 118 conjuncts are in the unsatisfiable core [2024-09-12 18:05:06,296 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:05:06,747 INFO L134 CoverageAnalysis]: Checked inductivity of 4062 backedges. 0 proven. 4062 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:05:06,747 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:05:16,577 INFO L134 CoverageAnalysis]: Checked inductivity of 4062 backedges. 0 proven. 4062 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:05:16,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [824574304] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:05:16,578 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:05:16,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [119, 119, 119] total 238 [2024-09-12 18:05:16,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970848292] [2024-09-12 18:05:16,578 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:05:16,579 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 238 states [2024-09-12 18:05:16,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:05:16,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 238 interpolants. [2024-09-12 18:05:16,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10510, Invalid=45896, Unknown=0, NotChecked=0, Total=56406 [2024-09-12 18:05:16,589 INFO L87 Difference]: Start difference. First operand 1036 states and 1130 transitions. Second operand has 238 states, 238 states have (on average 2.508403361344538) internal successors, (597), 236 states have internal predecessors, (597), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:05:22,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:05:22,494 INFO L93 Difference]: Finished difference Result 1676 states and 1828 transitions. [2024-09-12 18:05:22,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 234 states. [2024-09-12 18:05:22,495 INFO L78 Accepts]: Start accepts. Automaton has has 238 states, 238 states have (on average 2.508403361344538) internal successors, (597), 236 states have internal predecessors, (597), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 301 [2024-09-12 18:05:22,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:05:22,501 INFO L225 Difference]: With dead ends: 1676 [2024-09-12 18:05:22,501 INFO L226 Difference]: Without dead ends: 1612 [2024-09-12 18:05:22,504 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 723 GetRequests, 484 SyntacticMatches, 2 SemanticMatches, 237 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21819 ImplicationChecksByTransitivity, 13.3s TimeCoverageRelationStatistics Valid=10516, Invalid=46366, Unknown=0, NotChecked=0, Total=56882 [2024-09-12 18:05:22,505 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 514 mSDsluCounter, 541 mSDsCounter, 0 mSdLazyCounter, 700 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 514 SdHoareTripleChecker+Valid, 553 SdHoareTripleChecker+Invalid, 767 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 700 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-09-12 18:05:22,505 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [514 Valid, 553 Invalid, 767 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 700 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-09-12 18:05:22,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1612 states. [2024-09-12 18:05:23,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1612 to 1052. [2024-09-12 18:05:23,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1052 states, 1046 states have (on average 1.0917782026768643) internal successors, (1142), 1047 states have internal predecessors, (1142), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:05:23,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1052 states to 1052 states and 1146 transitions. [2024-09-12 18:05:23,259 INFO L78 Accepts]: Start accepts. Automaton has 1052 states and 1146 transitions. Word has length 301 [2024-09-12 18:05:23,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:05:23,260 INFO L474 AbstractCegarLoop]: Abstraction has 1052 states and 1146 transitions. [2024-09-12 18:05:23,260 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 238 states, 238 states have (on average 2.508403361344538) internal successors, (597), 236 states have internal predecessors, (597), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:05:23,261 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:05:23,261 INFO L276 IsEmpty]: Start isEmpty. Operand 1052 states and 1146 transitions. [2024-09-12 18:05:23,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2024-09-12 18:05:23,262 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:05:23,262 INFO L216 NwaCegarLoop]: trace histogram [31, 30, 30, 30, 30, 30, 30, 29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:05:23,280 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 18:05:23,466 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2024-09-12 18:05:23,467 INFO L399 AbstractCegarLoop]: === Iteration 46 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2024-09-12 18:05:23,467 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:05:23,467 INFO L85 PathProgramCache]: Analyzing trace with hash 677976338, now seen corresponding path program 29 times [2024-09-12 18:05:23,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:05:23,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199471179] [2024-09-12 18:05:23,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:05:23,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:05:23,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:05:29,524 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:05:29,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:05:29,527 INFO L134 CoverageAnalysis]: Checked inductivity of 4352 backedges. 0 proven. 4352 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:05:29,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:05:29,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199471179] [2024-09-12 18:05:29,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199471179] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:05:29,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1946178157] [2024-09-12 18:05:29,527 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-12 18:05:29,527 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:05:29,528 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:05:29,529 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 18:05:29,530 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 18:05:29,699 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 31 check-sat command(s) [2024-09-12 18:05:29,699 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 18:05:29,704 INFO L262 TraceCheckSpWp]: Trace formula consists of 815 conjuncts, 122 conjuncts are in the unsatisfiable core [2024-09-12 18:05:29,709 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:05:30,175 INFO L134 CoverageAnalysis]: Checked inductivity of 4352 backedges. 0 proven. 4352 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:05:30,176 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 18:05:40,576 INFO L134 CoverageAnalysis]: Checked inductivity of 4352 backedges. 0 proven. 4352 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:05:40,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1946178157] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 18:05:40,576 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 18:05:40,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [123, 123, 123] total 246 [2024-09-12 18:05:40,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716153748] [2024-09-12 18:05:40,577 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 18:05:40,578 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 246 states [2024-09-12 18:05:40,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 18:05:40,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 246 interpolants. [2024-09-12 18:05:40,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11232, Invalid=49038, Unknown=0, NotChecked=0, Total=60270 [2024-09-12 18:05:40,589 INFO L87 Difference]: Start difference. First operand 1052 states and 1146 transitions. Second operand has 246 states, 246 states have (on average 2.508130081300813) internal successors, (617), 244 states have internal predecessors, (617), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:05:47,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 18:05:47,052 INFO L93 Difference]: Finished difference Result 1714 states and 1868 transitions. [2024-09-12 18:05:47,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 242 states. [2024-09-12 18:05:47,053 INFO L78 Accepts]: Start accepts. Automaton has has 246 states, 246 states have (on average 2.508130081300813) internal successors, (617), 244 states have internal predecessors, (617), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 311 [2024-09-12 18:05:47,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 18:05:47,058 INFO L225 Difference]: With dead ends: 1714 [2024-09-12 18:05:47,058 INFO L226 Difference]: Without dead ends: 1648 [2024-09-12 18:05:47,062 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 747 GetRequests, 500 SyntacticMatches, 2 SemanticMatches, 245 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23322 ImplicationChecksByTransitivity, 14.1s TimeCoverageRelationStatistics Valid=11238, Invalid=49524, Unknown=0, NotChecked=0, Total=60762 [2024-09-12 18:05:47,062 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 726 mSDsluCounter, 510 mSDsCounter, 0 mSdLazyCounter, 687 mSolverCounterSat, 167 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 726 SdHoareTripleChecker+Valid, 522 SdHoareTripleChecker+Invalid, 854 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 167 IncrementalHoareTripleChecker+Valid, 687 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-09-12 18:05:47,062 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [726 Valid, 522 Invalid, 854 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [167 Valid, 687 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-09-12 18:05:47,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1648 states. [2024-09-12 18:05:47,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1648 to 1068. [2024-09-12 18:05:47,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1068 states, 1062 states have (on average 1.0903954802259888) internal successors, (1158), 1063 states have internal predecessors, (1158), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:05:47,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1068 states to 1068 states and 1162 transitions. [2024-09-12 18:05:47,842 INFO L78 Accepts]: Start accepts. Automaton has 1068 states and 1162 transitions. Word has length 311 [2024-09-12 18:05:47,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 18:05:47,842 INFO L474 AbstractCegarLoop]: Abstraction has 1068 states and 1162 transitions. [2024-09-12 18:05:47,843 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 246 states, 246 states have (on average 2.508130081300813) internal successors, (617), 244 states have internal predecessors, (617), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 18:05:47,843 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:05:47,843 INFO L276 IsEmpty]: Start isEmpty. Operand 1068 states and 1162 transitions. [2024-09-12 18:05:47,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2024-09-12 18:05:47,845 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 18:05:47,845 INFO L216 NwaCegarLoop]: trace histogram [32, 31, 31, 31, 31, 31, 31, 30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 18:05:47,864 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Ended with exit code 0 [2024-09-12 18:05:48,045 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2024-09-12 18:05:48,046 INFO L399 AbstractCegarLoop]: === Iteration 47 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2024-09-12 18:05:48,046 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 18:05:48,047 INFO L85 PathProgramCache]: Analyzing trace with hash 1000345264, now seen corresponding path program 30 times [2024-09-12 18:05:48,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 18:05:48,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694610381] [2024-09-12 18:05:48,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 18:05:48,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 18:05:48,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:05:54,522 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 18:05:54,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 18:05:54,525 INFO L134 CoverageAnalysis]: Checked inductivity of 4652 backedges. 0 proven. 4652 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:05:54,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 18:05:54,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694610381] [2024-09-12 18:05:54,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694610381] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 18:05:54,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1839658075] [2024-09-12 18:05:54,529 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-12 18:05:54,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 18:05:54,529 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 18:05:54,531 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 18:05:54,532 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 18:05:54,884 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 32 check-sat command(s) [2024-09-12 18:05:54,884 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 18:05:54,895 INFO L262 TraceCheckSpWp]: Trace formula consists of 841 conjuncts, 129 conjuncts are in the unsatisfiable core [2024-09-12 18:05:54,904 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 18:05:55,483 INFO L134 CoverageAnalysis]: Checked inductivity of 4652 backedges. 0 proven. 4652 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 18:05:55,483 INFO L327 TraceCheckSpWp]: Computing backward predicates...